Olefin polymerization catalyst component and application thereof

Abstract

The present invention discloses an olefin polymerization catalyst component and applications thereof, the catalyst component comprises Mg, Ti, halogen, at least one internal electron donor a compound and at least one internal electron donor b compound, the internal electron donor a compound is selected from quercetin derivative internal electron donors represented by a formula I, and the internal electron donor b compound is selected from quercetin derivative internal electron donors represented by a formula II. The internal electron donor b compound is selected from a Lewis alkali compound; in the formula I, R1 is independently selected from H, halogen and C1-C20 alkyl. According to the catalyst component containing the compound internal electron donor compound provided by the invention, after the quercetin ether or quercetin alcohol ester internal electron donor is matched with the Lewis alkali compound, the activity can be greatly improved and is obviously higher than the activity of any compound ID when the compound ID is independently used.

Description

Technical Field

[0001] This invention relates to a solid catalyst component for olefin polymerization, belonging to the field of polyolefin catalysts. Background Technology

[0002] Currently, Ziegler-Natta catalysts (ZN catalysts) still dominate the production of polyolefins. Most ZN catalyst development focuses on developing highly active and stereoregularly oriented catalysts and improving their copolymerization capabilities. Traditional ZN catalysts (transition metal compounds such as titanium chemically bonded to a magnesium support) offer high catalytic efficiency, produce polymers with good overall performance, and are low-cost. Therefore, the vast majority of catalysts used in polypropylene production worldwide are still based on ZN catalytic systems, characterized by high activity, high stereoregularity, long lifespan, and customizable product structures. The development of ZN catalysts shows that, as early as the advent of the first generation of catalysts, it was discovered that adding a third component (mostly an electron donor, also known as a Lewis base; those added during catalyst preparation are called internal electron donors, while those added during polymerization are called external electron donors) significantly impacts olefin polymerization behavior and polymer properties. Changing the internal electron donor in the catalyst can maximally alter the properties of the catalyst's active center, thereby maximizing the change in catalyst performance. Therefore, the development of novel electron donors has always been a hot topic in ZN polypropylene catalyst research and development.

[0003] The high-performance internal electron donor compounds with distinctive features in the prior art mainly include: (1) fatty acid esters and aromatic esters, mainly phthalate esters; (2) diethers (e.g., compounds disclosed in EP0361493 and EP0728724); (3) succinates (e.g., compounds disclosed in WO9856834, WO0063261 and WO03022894); (4) glycol esters (e.g., compounds disclosed in WO9856834, WO0063261 and WO03022894); and (5) compounds with other functional groups (compounds disclosed in CN1105671, CN1242780 and US20060128558), etc. However, in practical applications, the above-mentioned compounds all have certain problems as internal electron donors for olefin polymerization catalysts. Although catalysts using 1,3-diether compounds as internal electron donors have high activity and good hydrogen-modulated sensitivity, the relative molecular mass distribution of the synthesized PP is narrow, which is not conducive to the development of different grades of PP. Succinate compounds as internal electron donors have the advantage of producing PP with a wider relative molecular mass distribution, but the stereoregularity of PP and the hydrogen-modulated sensitivity of the catalyst need to be improved. The activity of glycol ester catalytic systems is generally not as ideal as that of diether systems.

[0004] Currently, phthalate compounds are the most widely used internal electron donors in polyolefin industry. Catalysts prepared from phthalates exhibit moderate activity, good stereoselectivity, and low cost. However, as commonly used plasticizers, phthalates pose significant risks to human reproductive health and the environment, creating a substantial demand for alternatives. The use of most phthalate compounds has already been restricted. Therefore, developing novel electron donors with excellent activity, good stereoselectivity, superior overall performance, and low cost to replace the widely used phthalate electron donor compounds and applying them to the preparation of highly efficient Ziegler-Natta catalysts has been a common research goal in the field of polyolefin catalysts in recent years. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a catalyst component, catalyst, and its application for olefin polymerization. This catalyst component and catalyst exhibit high catalytic activity, generally exceeding that of commonly used phthalate and diether internal electron-donating catalysts in industry. The polymer obtained by catalytic polymerization has regular particle size, high packing density, high isotacticity, and adjustable molecular weight distribution. The temperature fluctuation within the polymerization reactor is small, and the reaction is stable, which is beneficial for industrial production.

[0006] To achieve the above objectives, the present invention provides a catalyst component for olefin polymerization, the catalyst component comprising: Mg, Ti, halogen, at least one internal electron donor a compound and at least one internal electron donor b compound, wherein the internal electron donor a compound is selected from quercetin derivative internal electron donors represented by Formula I, and the internal electron donor b compound is selected from Lewis base compounds.

[0007]

[0008] In formula I, R 1 Each is independently selected from H, halogen, C1-C 20 Hydrocarbon group.

[0009] According to a specific embodiment of the present invention, preferably, R 1 Each of them also contains heteroatoms independently, which are selected from one or more combinations of N, O, S, P, Si and halogens.

[0010] According to a specific embodiment of the present invention, preferably, in formula I, R 1The following substituents are selected from H, halogens, and 20 or fewer carbon atoms: straight-chain or branched alkyl, cycloalkyl, alkenyl, ester, phenyl, alkylphenyl, phenylalkyl, indene, benzyl, haloalkyl, heteroatom-containing alkyl, halocycloalkyl, heteroatom-containing cycloalkyl, halophenyl, heteroatom-containing phenyl, haloalkylphenyl, heteroatom-containing alkylphenyl, halophenylalkyl, heteroatom-containing phenylalkyl, haloindenyl, heteroatom-containing indene, halobenzyl, heteroatom-containing benzyl, heterocyclic aryl substituents; the heteroatom includes one or more combinations of N, O, S, P, and Si.

[0011] According to a specific embodiment of the present invention, preferably, in formula I, R 1 Selected from H, halogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, cyclopentyl, n-hexyl, cyclohexyl, heptyl, octyl, nonyl, decyl, C 11 -C 20 The following substituents with 20 or fewer carbon atoms, whether linear or branched alkyl groups: alkenyl, phenyl, m-chlorophenyl, p-chlorophenyl, o-chlorophenyl, m-methoxyphenyl, p-methoxyphenyl, o-methoxyphenyl, p-methylphenyl, p-nitrophenyl, m-nitrophenyl, benzyl and its derivatives, phenethyl and its derivatives, furanyl, pyrroleyl, thiophenyl, indene; more preferably, the alkenyl group includes propenyl, butenyl, pentenyl, and hexenyl.

[0012] According to a specific embodiment of the present invention, preferably, the internal electron donor of the quercetin derivative includes an internal electron donor of quercetin ethers, which includes one or more of quercetin ethyl ether, quercetin methyl ether, quercetin benzyl ether, and quercetin p-methoxybenzyl ether.

[0013] According to a specific embodiment of the present invention, preferably, the internal electron donor of the quercetin derivative includes a quercetin alcohol ester internal electron donor, wherein the quercetin alcohol ester internal electron donor has a quercetin alcohol ester structure as shown in Formula II:

[0014]

[0015] In Equation II, R 2 Each is independently selected from H, halogen, C1-C 20 The hydrocarbon group; preferably, R 2 Each of them also contains heteroatoms independently, which are selected from one or more combinations of N, O, S, P, Si and halogens.

[0016] According to a specific embodiment of the present invention, preferably, in formula II, R 2The following substituents are selected from H, halogens, and 20 or fewer carbon atoms: straight-chain or branched alkyl, cycloalkyl, alkenyl, ester, phenyl, alkylphenyl, phenylalkyl, indene, benzyl, haloalkyl, heteroatom-containing alkyl, halocycloalkyl, heteroatom-containing cycloalkyl, halophenyl, heteroatom-containing phenyl, haloalkylphenyl, heteroatom-containing alkylphenyl, halophenylalkyl, heteroatom-containing phenylalkyl, haloindenyl, heteroatom-containing indene, halobenzyl, heteroatom-containing benzyl, heterocyclic aryl substituents; the heteroatom includes one or more combinations of N, O, S, P, and Si.

[0017] According to a specific embodiment of the present invention, preferably, in formula II, R 2 Selected from H, halogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, cyclopentyl, n-hexyl, cyclohexyl, heptyl, octyl, nonyl, decyl, C 11 -C 20 The following substituents with 20 or fewer carbon atoms, whether linear or branched alkyl groups: alkenyl, phenyl, m-chlorophenyl, p-chlorophenyl, o-chlorophenyl, m-methoxyphenyl, p-methoxyphenyl, o-methoxyphenyl, p-methylphenyl, p-nitrophenyl, m-nitrophenyl, benzyl and its derivatives, phenethyl and its derivatives, furanyl, pyrroleyl, thiophenyl, indene; more preferably, the alkenyl group includes propenyl, butenyl, pentenyl, and hexenyl.

[0018] According to a specific embodiment of the present invention, preferably, the internal electron donor of the quercetin ester includes one or more of the following: quercetin benzoate, quercetin phenylacetate, quercetin m-chlorobenzoate, quercetin p-methoxybenzoate, quercetin p-nitrobenzoate, quercetin furanoate, quercetin isonicotinate, quercetin cyclohexylcarboxylate, quercetin ethyl ester, quercetin isobutyl ester, and quercetin n-octyl ester.

[0019] The electron donor of the quercetin derivative shown in Formula I can be synthesized by methods including but not limited to the following reaction formula I: quercetin reacts with an alcohol or a haloalkane in one step to obtain quercetin ether.

[0020] Reaction I:

[0021]

[0022] The quercetin alcohol esters represented by Formula II can be synthesized by methods including but not limited to the following reaction formula II: quercetin reacts with acyl chloride in one step to obtain substituted maltol esters;

[0023] Reaction II:

[0024]

[0025] According to a specific embodiment of the present invention, preferably, the internal electron-donating compound b can be selected from a Lewis base containing one or more electronegative groups, wherein the electron-donating atom is selected from the group consisting of N, O, S, P, As or Sn.

[0026] The Lewis base is preferably an electron-donating compound from diethers, esters, diketones, and diamines. When the substituted quercetin derivative of Formula I, which is an internal electron-donator, is used in conjunction with a Lewis base compound, a catalyst with tunable performance can be obtained, especially with a significant improvement in catalyst activity.

[0027] According to a specific embodiment of the present invention, preferably, the Lewis base compound comprises a 1,3-diether compound having the structure shown in Formula III:

[0028]

[0029] Formula III

[0030] In Equation III, R 3 R 4 R 5 R 6 R 7 and R 8 Whether the two are the same or different, they are each independently selected from H, C1-C. 20 Straight-chain or branched alkyl groups, C3-C 20 cycloalkyl, C5-C 20 aryl, C7-C 20 alkylaryl or C7-C 20 Aryl groups; R 9 and R 10 Whether the two are the same or different, they are each independently selected from C1-C. 20 Straight-chain or branched alkyl groups, C3-C 20 cycloalkyl, C5-C 20 aryl, C7-C 20 alkylaryl and C7-C 20 Aryl alkyl group; preferably, R 4 -R 10 One or more groups in R are linked to form a cyclic structure; preferably, R 5 -R 12 Each contains heteroatoms selected from one or more combinations of halogens, N, O, S, P, and Si.

[0031] According to a specific embodiment of the present invention, preferably, the Lewis base compound comprises a 1,3-diether compound having the structure shown in Formula IV:

[0032]

[0033] In Equation IV, there are eight R 17 Whether the same or different, each is independently selected from hydrogen, halogen, C1-C 14 Straight-chain or branched alkyl groups, C3-C 14 cycloalkyl, C6-C 14 aryl, C7-C 14 alkylaryl, C7-C 14 arylalkyl.

[0034] According to a specific embodiment of the present invention, preferably, eight R 17 Each contains heteroatoms selected from one or more combinations of N, O, S, P, Si and halogens.

[0035] According to a specific embodiment of the present invention, preferably, R 11 R 12 R 13 and R 14 Whether the two are the same or different, they are each independently selected from H, C1-C. 18 Straight-chain or branched alkyl groups, C3-C 20 cycloalkyl, C6-C 20 aryl, C7-C 20 alkylaryl or C7-C 20 Aryl groups; R 15 and R 16 Whether the two are the same or different, they are each independently selected from C1-C. 20 Straight-chain or branched alkyl groups, C3-C 20 cycloalkyl, C6-C 20 aryl, C7-C 20 alkylaryl and C7-C 20 Aryl alkyl group; preferably, R 11 -R 16 One or more groups in the compound link together to form a cyclic structure.

[0036] According to a specific embodiment of the present invention, preferably, R 11 -R 16 Each contains heteroatoms selected from one or more combinations of halogens, N, O, S, P, and Si.

[0037] According to a specific embodiment of the present invention, preferably, the 1,3-diether compound includes 2-(2-ethylhexyl)-1,3-dimethoxypropane, 2-isopropyl-1,3-dimethoxypropane, 2-butyl-1,3-dimethoxypropane, 2-sec-butyl-1,3-dimethoxypropane, 2-cyclohexyl-1,3-dimethoxypropane, 2-phenyl-1,3-dimethoxypropane, 2-tert-butyl-1,3-dimethoxypropane, 2-cumyl-1,3-dimethoxypropane, 2-(2-phenylethyl)-1,3-dimethoxypropane, 2-(2-cyclohexylethyl)-1,3-dimethoxypropane, 2-(p-chlorophenyl)-1,3-dimethoxypropane, 2-(diphenylmethyl)-1,3-di ... Methoxypropane, 2-(1-naphthyl)-1,3-dimethoxypropane, 2-(p-fluorophenyl)-1,3-dimethoxypropane, 2-(1-decahydronaphthyl)-1,3-dimethoxypropane, 2-(p-tert-butylphenyl)-1,3-dimethoxypropane, 2,2-dicyclohexyl-1,3-dimethoxypropane, 2,2-diethyl-1,3-dimethoxypropane, 2,2-dipropyl-1,3-dimethoxypropane, 2,2-dibutyl-1,3-dimethoxypropane, 2,2-diethyl-1,3-diethoxypropane, 2,2-dicyclopentyl-1,3-dimethoxypropane, 2,2-dipropyl-1,3-diethoxypropane, 2,2-dibutyl-1,3-diethoxypropane, 2-methyl-2 2-Ethyl-1,3-dimethoxypropane, 2-Methyl-2-propyl-1,3-dimethoxypropane, 2-Methyl-2-benzyl-1,3-dimethoxypropane, 2-Methyl-2-phenyl-1,3-dimethoxypropane, 2-Methyl-2-cyclohexyl-1,3-dimethoxypropane, 2-Methyl-2-methylcyclohexyl-1,3-dimethoxypropane, 2,2-bis(p-chlorophenyl)-1,3-dimethoxypropane, 2,2-bis(2-phenylethyl)-1,3-dimethoxypropane, 2,2-bis(2-cyclohexylethyl)-1,3-dimethoxypropane, 2-Methyl-2-isobutyl-1,3-dimethoxypropane, 2-Methyl-2-(2-ethylhexyl)-1,3-dimethoxypropane, 2,2 -Bis(2-ethylhexyl)-1,3-dimethoxypropane, 2,2-bis(p-methylphenyl)-1,3-dimethoxypropane, 2-isopropyl-2-isopentyl-1,3-dimethoxypropane, 2-methyl-2-isopropyl-1,3-dimethoxypropane, 2,2-diisobutyl-1,3-dimethoxypropane, 2,2-diphenyl-1,3-dimethoxypropane, 2,2-dibenzyl-1,3-dimethoxypropane, 2-isopropyl-2-cyclopentyl-1,3-dimethoxypropane, 2,2-bis(cyclohexylmethyl)-1,3-dimethoxypropane, 2,2-diisobutyl-1,3-diethoxypropane, 2,2-diisobutyl-1,3-dibutoxypropane, 2-isobutyl-2-isopropyl-1...3-Dimethoxypropane, 2,2-disec-butyl-1,3-dimethoxypropane, 2,2-di-tert-butyl-1,3-dimethoxypropane, 2,2-dineopentyl-1,3-dimethoxypropane, 2-isopropyl-2-isopentyl-1,3-dimethoxypropane, 2-phenyl-2-benzyl-1,3-dimethoxypropane, 2-cyclohexyl-2-cyclohexylmethyl-1,3-dimethoxypropane, 1,1-bis(methoxymethyl)-cyclopentadiene, 1,1-bis(methoxymethyl)-2,3,4,5-tetramethylcyclopentadiene, 1,1-bis(methoxymethyl)-2,3,4,5-tetraphenylcyclopentadiene, 1,1-bis(methoxymethyl)-2,3,4,5-tetrafluoro ... 1,1-bis(methoxymethyl)indene, 1,1-bis(methoxymethyl)-2,3-dimethylindene, 1,1-bis(methoxymethyl)-4,5,6,7-tetrahydroindene, 1,1-bis(methoxymethyl)-2,3,6,7-tetrafluoroindene, 1,1-bis(methoxymethyl)-4,7-dimethylindene, 1,1-bis(methoxymethyl)-3,6-dimethylindene, 1,1-bis(methoxymethyl)-4-phenylindene, 1,1-bis(methoxymethyl)-4-phenyl-2-methylindene, 1,1-bis(methoxymethyl)-4-cyclohexylindene, 1,1-bis(methoxymethyl)-7-(3,3,3-trifluoropropyl)indene, 1,1-bis(methoxymethyl)-4 ... 1,1-Di(methoxymethyl)-7-trimethylsilylindene, 1,1-Di(methoxymethyl)-7-trifluoromethylindene, 1,1-Di(methoxymethyl)-4,7-dimethyl-4,5,6,7-tetrahydroindene, 1,1-Di(methoxymethyl)-7-methylindene, 1,1-Di(methoxymethyl)-7-cyclopentylindene, 1,1-Di(methoxymethyl)-7-isopropylindene, 1,1-Di(methoxymethyl)-7-cyclohexylindene, 1,1-Di(methoxymethyl)-7-tert-butylindene, 1,1-Di(methoxymethyl)-7-tert-butyl-2-methylindene, 1,1-Di(methoxymethyl)-7-phenylindene, 1,1-Di(methoxymethyl)-2-phenylindene, 1,1-Di(methoxymethyl)-1H-benzo[e] Indene, 1,1-bis(methoxymethyl)-1H-2-methylbenzo[e]indene, 9,9-bis(methoxymethyl)fluorene, 9,9-bis(methoxymethyl)-2,3,6,7-tetramethylfluorene, 9,9-bis(methoxymethyl)-2,3,4,5,6,7-hexafluorofluorene, 9,9-bis(methoxymethyl)-2,3-benzofluorene, 9,9-bis (methoxymethyl)-2,3,6,7-dibenzofluorene, 9,9-bis(methoxymethyl)-2,7-diisopropylfluorene, 9,9-bis(methoxymethyl)-1,8-dichlorofluorene, 9,9-bis(methoxymethyl)-2,7-dicyclopentylfluorene, 9,9-bis(methoxymethyl)-1,8-difluorofluorene, 9,9-bis(methoxymethyl)-1,2,One or a combination of two or more of 3,4-tetrahydrofluorene, 9,9-bis(methoxymethyl)-1,2,3,4,5,6,7,8-octahydrofluorene, and 9,9-bis(methoxymethyl)-4-tert-butylfluorene.

[0038] According to a specific embodiment of the present invention, preferably, the internal electron donor of the Lewis base includes a carboxylic acid ester compound, which includes a monocarboxylic acid ester compound and / or a polycarboxylic acid ester compound; more preferably, the polycarboxylic acid ester compound includes an aromatic dicarboxylic acid ester compound and / or an aliphatic dicarboxylic acid ester compound.

[0039] According to a specific embodiment of the present invention, preferably, the aromatic dicarboxylic acid ester compound includes phthalate diesters and / or terephthalate diesters;

[0040] The phthalate diester compounds include dimethyl phthalate, diethyl phthalate, di-n-propyl phthalate, diisopropyl phthalate, di-n-butyl phthalate, diisobutyl phthalate, methyl ethyl phthalate, methyl isopropyl phthalate, methyl-n-propyl phthalate, ethyl-n-butyl phthalate, ethyl isobutyl phthalate, di-n-pentyl phthalate, diisopentyl phthalate, dihexyl phthalate, di-n-heptyl phthalate, di-n-octyl phthalate, diisooctyl phthalate, di(2,2-dimethylhexyl) phthalate, di(2-ethylhexyl) phthalate, di-n-nonyl phthalate, diisodecyl phthalate, and phthalic acid dimethyl phthalate. Di(2,2-dimethylheptyl) formate, butyl isohexyl phthalate, butyl(2-ethylhexyl) phthalate, pentyl hexyl phthalate, pentyl isononyl phthalate, isopentyl decyl phthalate, undecyl pentyl phthalate, isopentyl isohexyl phthalate, hexyl(2-methylhexyl) phthalate, hexyl(2-ethylhexyl) phthalate, hexyl isononyl phthalate, hexyl isononyl phthalate, hexyl isononyl phthalate, hexyl isononyl phthalate, heptyl(2-ethylhexyl) phthalate, heptyl isononyl phthalate, heptyl neononyl phthalate, and (2-ethylhexyl) isononyl phthalate.

[0041] The terephthalate diester compounds include dimethyl terephthalate, diethyl terephthalate, di-n-propyl terephthalate, diisopropyl terephthalate, di-n-butyl terephthalate, diisobutyl terephthalate, ethyl methyl terephthalate, methyl isopropyl terephthalate, ethyl-n-propyl terephthalate, ethyl-n-butyl terephthalate, ethyl isobutyl terephthalate, and so on. Di-n-pentyl terephthalate, diisopentyl terephthalate, dihexyl terephthalate, di-n-heptyl terephthalate, di-n-octyl terephthalate, diisooctyl terephthalate, di(2,2-dimethylhexyl) terephthalate, di(2-ethylhexyl) terephthalate, di-n-nonyl terephthalate, diisononyl terephthalate, diisodecyl terephthalate, di(2,2- Dimethyl ethyl heptyl terephthalate, n-butyl isohexyl terephthalate, n-butyl(2-ethylhexyl) terephthalate, n-pentyl hexyl terephthalate, n-pentyl isohexyl terephthalate, isopentyl heptyl terephthalate, n-pentyl(2-ethylhexyl) terephthalate, n-pentyl isononyl terephthalate, isopentyl decyl terephthalate, n-pentyl undecane terephthalate The following are one or more of the following: terephthalic acid ester, isopentyl isohexyl terephthalate, n-hexyl(2-ethylhexyl) terephthalate, n-hexyl isononyl terephthalate, n-hexyl n-decyl terephthalate, n-heptyl(2-ethylhexyl) terephthalate, n-heptyl isononyl terephthalate, n-heptyl neodecyl terephthalate, and (2-ethylhexyl) isononyl terephthalate;

[0042] More preferably, the aromatic dicarboxylic acid ester compound includes one or more of the following: diethyl phthalate, propyl butyl phthalate, diisopropyl terephthalate, di-n-butyl phthalate, diisobutyl phthalate, di-n-octyl phthalate, diisooctyl phthalate, di-n-butyl terephthalate, diisobutyl terephthalate, di-n-octyl terephthalate, diisooctyl terephthalate, di(2-ethylhexyl) terephthalate, and diisodecyl phthalate.

[0043] According to a specific embodiment of the present invention, preferably, the Lewis base compound comprises a succinate compound having the structure shown in Formula V:

[0044]

[0045]

[0046] In formula V, R 18 and R 19 Whether the two are the same or different, they are each independently selected from C1-C. 20 Straight-chain or branched alkyl groups, C2-C20 alkenyl, C3-C 20 cycloalkyl, C6-C 20 aryl, C7-C 20 Aryl groups, C7-C 20 The alkylaryl group; preferably, R 18 and R 19 Each contains heteroatoms; R 20 -R 23 Each is independently selected from hydrogen, C1-C 20 Straight-chain or branched alkyl groups, C2-C 20 alkenyl, C3-C 20 cycloalkyl, C6-C 20 aryl, C7-C 20 Aryl groups, C7-C 20 alkylaryl; preferably, R 20 -R 23 Mutually bonded to form a ring; preferably, R 20 -R 23 Each contains heteroatoms; preferably, the heteroatoms include one or more combinations of N, O, S, P, Si, and halogens.

[0047] According to a specific embodiment of the present invention, preferably, R 18 and R 19 Each group is independently selected from C1-C8 alkyl, C3-C8 cycloalkyl, C6-C8 aryl, C7-C8 aralkyl, and C7-C8 alkylaryl groups; preferably, R 18 and R 19 Each is independently selected from straight-chain primary alkyl or branched primary alkyl; preferably, R 18 and R 19 Each is independently selected from methyl, ethyl, n-propyl, n-butyl, isobutyl, neopentyl, 2-ethylhexyl, and more preferably from ethyl, isobutyl, and neopentyl.

[0048] According to a specific embodiment of the present invention, preferably, in formula V, R 20 -R 22 For hydrogen, R 23 Selected from C3-C 10 Branched alkyl groups, C3-C 10 cycloalkyl, C6-C 10 aryl, C7-C 10 Aryl groups, C7-C 10 The alkylaryl group; more preferably, R 23 Selected from C3-C 10 Branched primary alkyl groups, C3-C 10 cycloalkyl groups.

[0049] According to a specific embodiment of the present invention, preferably, the succinate compound is a monosubstituted succinate compound, which includes diethyl sec-butyl succinate, diethyl hexyl succinate, diethyl cyclopropyl succinate, diethyl norbornyl succinate, diethyl methoxysuccinate, diethyl p-methoxyphenyl succinate, diethyl p-chlorophenyl succinate, diethyl phenyl succinate, diethyl cyclohexyl succinate, diethyl benzyl succinate, and diethyl tert-butyl succinate. Diethyl succinate, diethyl isobutyl succinate, diethyl isopropyl succinate, diethyl neopentyl succinate, diethyl isopentyl succinate, diethyl (1-trifluoromethylethyl) succinate, diethyl fluorenyl succinate, diisobutyl sec-butyl succinate, diisobutyl hexyl succinate, diisobutyl cyclopropyl succinate, diisobutyl norbornyl succinate, diisobutyl trimethylsilyl succinate, diisobutyl methoxysuccinate, diisobutyl p-methoxyphenyl succinate, diisobutyl p-chlorophenoxy Diisobutyl succinate, cyclohexyl diisobutyl succinate, benzyl diisobutyl succinate, tert-butyl diisobutyl succinate, isobutyl diisobutyl succinate, isopropyl diisobutyl succinate, neopentyl diisobutyl succinate, isopentyl diisobutyl succinate, (1-trifluoromethylethyl) diisobutyl succinate, fluorenyl diisobutyl succinate, sec-butyl dineopentyl succinate, hexyl dineopentyl succinate, cyclopropyl dineopentyl succinate, norbornyl dineopentyl succinate, trimethyl Dipentyl silyl succinate, dipentyl methoxy succinate, dipentyl p-chlorophenyl succinate, dipentyl phenyl succinate, dipentyl cyclohexyl succinate, dipentyl benzyl succinate, dipentyl tert-butyl succinate, dipentyl isobutyl succinate, dipentyl isopropyl succinate, dipentyl neopentyl succinate, dipentyl isopentyl succinate, dipentyl (1-trifluoromethylethyl) succinate, dipentyl fluorenyl succinate, or a combination of two or more of these.

[0050] According to a specific embodiment of the present invention, preferably, in formula V, R 20 -R 23 At least two groups are different from hydrogen, and each is independently selected from C1-C2. 20 Straight-chain or branched alkyl groups, C2-C 20 alkenyl, C3-C 20 cycloalkyl, C6-C 20 aryl, C7-C 20 Aryl groups, C7-C 20 alkylaryl; preferably, R 20 -R 23 Each contains heteroatoms.

[0051] According to a specific embodiment of the present invention, preferably, R 20 -R 23The two non-hydrogen groups in the formula are attached to the same carbon atom.

[0052] According to a specific embodiment of the present invention, preferably, the succinate compound is a disubstituted succinate compound, wherein the disubstituted succinate compound includes diethyl 2,2-dimethylsuccinate, diethyl 2-ethyl-2-methylsuccinate, diethyl 2-benzyl-2-isopropylsuccinate, diethyl 2-cyclohexylmethyl-2-isobutylsuccinate, diethyl 2-cyclopentyl-2-n-butylsuccinate, diethyl 2,2-diisobutylsuccinate, diethyl 2-cyclohexyl-2-ethylsuccinate, diethyl 2-isopropyl-2-methylsuccinate, and 2-tetradecane. Diethyl 2-ethylsuccinate, 2-isobutyl-2-ethylsuccinate, 2-(1-trifluoromethylethyl)-2-methylsuccinate, 2-isopentyl-2-isobutylsuccinate, 2-phenyl-2-n-butylsuccinate, 2,2-dimethylsuccinate, 2-ethyl-2-methylsuccinate, 2-benzyl-2-isopropylsuccinate, 2-cyclohexylmethyl-2-isobutylsuccinate, 2-cyclopentyl-2-n-butylsuccinate, 2,2-diisobutylsuccinate 2-Cyclohexyl-2-ethylsuccinate diisobutyl ester, 2-isopropyl-2-methylsuccinate diisobutyl ester, 2-tetradecyl-2-ethylsuccinate diisobutyl ester, 2-isobutyl-2-ethylsuccinate diisobutyl ester, 2-(1-trifluoromethylethyl)-2-methylsuccinate diisobutyl ester, 2-isopentyl-2-isobutylsuccinate diisobutyl ester, 2-phenyl-2-n-butylsuccinate diisobutyl ester, 2,2-dimethylsuccinate dineopentyl ester, 2-ethyl-2-methylsuccinate dineopentyl ester, 2-benzyl-2-isopropylsuccinate dineopentyl ester, 2-cyclohexylmethyl- One or more of the following: dinepentyl isobutylsuccinate, dinepentyl 2-cyclopentyl-2-n-butylsuccinate, dinepentyl 2,2-diisobutylsuccinate, dinepentyl 2-cyclohexyl-2-ethylsuccinate, dinepentyl 2-isopropyl-2-methylsuccinate, dinepentyl 2-tetradecyl-2-ethylsuccinate, dinepentyl 2-isobutyl-2-ethylsuccinate, dinepentyl 2-(1-trifluoromethylethyl)-2-methylsuccinate, dinepentyl 2-isopentyl-2-isobutylsuccinate, and dinepentyl 2-phenyl-2-n-butylsuccinate.

[0053] According to a specific embodiment of the present invention, preferably, in formula V, R 20 -R 23 The two non-hydrogen groups in the structure are attached to different carbon atoms.

[0054] According to a specific embodiment of the present invention, preferably, the succinate compound is a disubstituted succinate compound, wherein the disubstituted succinate compound includes 2,3-di(trimethylsilyl)succinate diethyl ester, 2-sec-butyl-3-methylsuccinate diethyl ester, 2-(3,3,3-trifluoropropyl)-3-methylsuccinate diethyl ester, 2,3-di(2-ethylbutyl)succinate diethyl ester, 2,3-dibenzylsuccinate diethyl ester, 2,3-diisopropylsuccinate diethyl ester, 2,3-di(cyclohexylmethyl)succinate diethyl ester, 2,3-di-tert-butylsuccinate diethyl ester, 2,3-diisobutylsuccinate diethyl ester, 2,3-dineopentylsuccinate diethyl ester, 2,3-diisopent ... Diethyl 3-bis(1-trifluoromethylethyl)succinate, diethyl 2,3-bis(tetradecyl)succinate, diethyl 2,3-difluorenylsuccinate, diethyl 2-isopropyl-3-isobutylsuccinate, diethyl 2-tert-butyl-3-isopropylsuccinate, diethyl 2-isopropyl-3-cyclohexylsuccinate, diethyl 2-isopentyl-3-cyclohexylsuccinate, diethyl 2-tetradecyl-3-cyclohexylsuccinate, diethyl 2-cyclohexyl-3-cyclopentylsuccinate, diisobutyl 2,3-bis(trimethylsilyl)succinate, diisobutyl 2-sec-butyl-3-methylsuccinate, diisobutyl 2-(3,3,3-trifluoropropyl)-3-methylsuccinate, diisobutyl 2,3-bis(2-ethylbutyl)succinate Ester, 2,3-dibenzyl succinate diisobutyl ester, 2,3-diisopropyl succinate diisobutyl ester, 2,3-di(cyclohexylmethyl)succinate diisobutyl ester, 2,3-di-tert-butyl succinate diisobutyl ester, 2,3-diisobutyl succinate diisobutyl ester, 2,3-dineopentyl succinate diisobutyl ester, 2,3-diisopentyl succinate diisobutyl ester, 2,3-di(1-trifluoromethylethyl)succinate diisobutyl ester, 2,3-di(tetradecyl)succinate diisobutyl ester, 2,3-difluorenyl succinate diisobutyl ester, 2-isopropyl-3-isobutyl succinate diisobutyl ester, 2-tert-butyl-3-isopropyl succinate diisobutyl ester, 2-isopropyl-3-cyclohexyl succinate diisobutyl ester, 2-isopentyl-3-cyclohexyl succinate diisobutyl ester Ester, 2-tetradecyl-3-cyclohexylmethylsuccinate diisobutyl ester, 2-cyclohexyl-3-cyclopentylsuccinate diisobutyl ester, 2,3-di(trimethylsilyl)succinate dineopentyl ester, 2-sec-butyl-3-methylsuccinate dineopentyl ester, 2-(3,3,3-trifluoropropyl)-3-methylsuccinate dineopentyl ester, 2,3-di(2-ethylbutyl)succinate dineopentyl ester, 2,3-dibenzylsuccinate dineopentyl ester, 2,3-diisopropylsuccinate dineopentyl ester, 2,3-di(cyclohexylmethyl)succinate dineopentyl ester, 2,3-di-tert-butylsuccinate dineopentyl ester, 2,3-diisobutylsuccinate dineopentyl ester, 2,3-dineopentylsuccinate dineopentyl ester, 2,Dipentyl 3-(1-trifluoromethylethyl)succinate, dipentyl 2,3-di(tetradecyl)succinate, dipentyl 2,3-difluorenylsuccinate, dipentyl 2-isopropyl-3-isobutylsuccinate, dipentyl 2-tert-butyl-3-isopropylsuccinate, dipentyl 2-isopropyl-3-cyclohexylsuccinate, dipentyl 2-isopentyl-3-cyclohexylsuccinate, dipentyl 2-tetradecyl-3-cyclohexylmethylsuccinate, and dipentyl 2-cyclohexyl-3-cyclopentylsuccinate, or a combination of two or more of these.

[0055] According to a specific embodiment of the present invention, preferably, in formula V, R 20 -R 23 Two or four of them are connected to form a loop.

[0056] According to a specific embodiment of the present invention, preferably, the succinate compound includes one or a combination of two or more of 1-(ethoxycarbonyl)-1-(ethoxyacetyl)-2,6-dimethylcyclohexane, 1-(ethoxycarbonyl)-1-(ethoxyacetyl)-2,5-dimethylcyclopentane, 1-(ethoxycarbonyl)-1-(ethoxyacetylmethyl)-2-methylcyclohexane, and 1-(ethoxycarbonyl)-1-(ethoxyacetylcyclohexyl)cyclohexane.

[0057] According to a specific embodiment of the present invention, preferably, the succinate compounds include diethyl perhydrogenated succinate, diethyl trimethylsuccinate, diethyl cyclohexylmethylsuccinate, phenylsuccinate (1-ethoxycarbo diisobutyl phenylsuccinate), diisobutyl perhydrogenated succinate, diisobutyl cyclohexylmethylsuccinate, dipentyl perhydrogenated succinate, dipentyl p-methoxyphenylsuccinate, dipentyl cyclohexylmethylsuccinate, 2,3-diethyl-2-isopropylsuccinate, diethyl 2,3-diisopropyl-2-methylsuccinate, diethyl 2,3-dicyclohexyl-2-methylsuccinate, 2, Diethyl 2,3,3-tetramethylsuccinate, diethyl 2,2,3,3-tetraethylsuccinate, diethyl 2,2,3,3-tetrapropylsuccinate, diethyl 2,3-diethyl-2,3-diisopropylsuccinate, diethyl 2,2,3,3-tetrafluorosuccinate, diisobutyl 2,3-diethyl-2-isopropylsuccinate, diisobutyl 2,3-diisopropyl-2-methylsuccinate, 2,3-dicyclohexyl 2-Methylsuccinate diisobutyl ester, 2,2,3,3-tetramethylsuccinate diisobutyl ester, 2,2,3,3-tetraethylsuccinate diisobutyl ester, 2,2,3,3-tetrapropylsuccinate diisobutyl ester, 2,3-diethyl-2,3-dipropylsuccinate diisobutyl ester, 2,2,3,3-tetrafluorosuccinate diisobutyl ester, 2,3-diethyl-2-isopropylsuccinate dinepentyl ester, 2,3-diisopropyl-2- Dipentyl methylsuccinate, 2,3-dicyclohexyl-2-methylsuccinate, 2,2,3,3-tetramethylsuccinate, 2,2,3,3-tetraethylsuccinate, 2,2,3,3-tetrapropylsuccinate, 2,3-diethyl-2,3-diisopropylsuccinate, and 2,2,3,3-tetrafluorosuccinate, or a combination of two or more of these.

[0058] The compounds listed above can be used as pure isomers, mixtures of enantiomers, or mixtures of positional isomers and enantiomers. When pure isomers are to be used, they are generally separated and purified using separation techniques known in the art. In particular, some of the succinate compounds of the present invention can be used as pure racemic or meso forms, or mixtures of both.

[0059] According to a specific embodiment of the present invention, preferably, the Lewis base compound comprises an ortho-phenylene diester compound; wherein, the ortho-phenylene diester compound has the structure shown in Formula VI:

[0060]

[0061] In equation VI, R27 and R 28 Whether the two are the same or different, they are each independently selected from C1-C. 20 Straight-chain or branched alkyl groups and their derivatives, C3-C 20 cycloalkyl, C6-C 20 aryl groups and their derivatives, C7-C 20 Araneyl groups and their derivatives, C2-C 10 olefin group, C 10 -C 20 Fused ring aryl, C 10 -C 20 ester group, R 27 and R 28 Not hydrogen; R 23 -R 26 Whether the two are the same or different, they are each independently selected from hydrogen, C1-C 20 hydrocarbon groups and their derivatives, including C1-C 20 Alkoxy groups, groups containing heteroatoms, groups containing C1-C 20 The group consisting of alkoxy groups and heteroatoms; more preferably, the heteroatoms include one or more combinations of N, O, S, P, Si, and halogens.

[0062] According to a specific embodiment of the present invention, preferably, the ortho-phenylene diester compound has the structure shown in Formula VII:

[0063]

[0064] In equation VII, R 29 -R 42 Whether the two are the same or different, they are each independently selected from hydrogen, C1-C 20 hydrocarbon groups and their derivatives, including C1-C 20 Alkoxy groups, groups containing heteroatoms, groups containing C1-C 20 Alkyl groups and heteroatom groups; more preferably, in formula VII, R 29 -R 32 At least one of them is selected from C1-C 20 hydrocarbon groups and their derivatives; more preferably, in formula VII, R 33 -R 42 At least one of them is selected from C1-C 20 hydrocarbon groups and their derivatives, including C1-C 20 Alkoxy groups, groups containing heteroatoms, groups containing C1-C 20 Alkyl groups and heteroatom groups.

[0065] According to a specific embodiment of the present invention, preferably, the ortho-phenylene diester compound is selected from 1,2-benzenediol-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0066] 1,2-Cephedrol-3-methyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0067] 1,2-Ceramide-3-methoxy-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0068] 1,2-Ceramide-3-ethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0069] 1,2-Ceramide-3-propyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0070] 1,2-Ceramide-3-isobutyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0071] 1,2-Ceramide-3-n-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0072] 1,2-Ceramide-3-ethoxy-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0073] 1,2-Ceramide-4-methyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0074] 1,2-Ceramide-4-ethyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0075] 1,2-Ceramide-4-propyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0076] 1,2-Ceramide-4-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0077] 1,2-Ceramide-4-isopentyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0078] 1,2-Ceramide-4-formyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0079] 1,2-Ceramide-4-acetyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0080] 1,2-Ceramide-4-hydroxy-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0081] 1,2-Cephedrol-4-chloro-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0082] 1,2-Ceramide-4-bromo-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0083] 1,2-Cephedrol-3,4-dimethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0084] 1,2-Cephedrol-3,4-dimethoxy-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0085] 1,2-Cephedrol-3,4-dichloro-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0086] 1,2-Ceramide-3-methyl-5-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0087] 1,2-Ceramide-3,5-di-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0088] 1,2-Cephedrol-3,5-diisopropyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0089] 1,2-Cephedrol-3,5-dimethoxy-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0090] 1,2-Cephedrol-3,6-dimethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0091] 1,2-Ceramide-3,6-di-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0092] 1,2-Cephedrol-3,6-dimethyl-4-isopropyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0093] 1,2-Ceramide-3-isopropyl-4,5-dimethyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0094] 1,2-Ceramide-4-ethyl-5-isobutyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0095] 1,2-Ceramide-4-ethyl-5-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0096] 1,2-Ceramide-3-methoxy-5-methyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0097] 1,2-Ceramide-3,4,6-trimethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0098] One or more of the following: 1,2-benzenediol-3,4,6-triisopropyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0099] The ortho-phenylene diester internal electron donor is more preferably from:

[0100] 1,2-Ceramide-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0101] 1,2-Cephedrol-3-methyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0102] 1,2-Ceramide-3-n-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0103] 1,2-Ceramide-4-methyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0104] 1,2-Ceramide-4-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0105] 1,2-Ceramide-3-methyl-5-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0106] 1,2-Cephedrol-3,6-dimethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester];

[0107] 1,2-Ceramide-3,6-di-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate];

[0108] One or more combinations of 1,2-benzenediol-3,4,6-trimethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester].

[0109] According to a specific embodiment of the present invention, preferably, the molar ratio of the electron donor and the Lewis base compound in the quercetin derivative is ≥1:9; more preferably, ≥3:7; even more preferably, ≥5:5; and even more preferably, ≥8:2.

[0110] According to a specific embodiment of the present invention, preferably, the catalyst component comprises a titanium compound, a magnesium compound, and an internal electron donor compound; the precursor of the magnesium compound is selected from X. n Mg(OR a ) 2-n MgCl2·mR a OH, R a 2-n MgX n One or more combinations of MgCl2 / SiO2, MgCl2 / Al2O3, magnesium halides, and titanium alkoxides, wherein m is 0.1-6, 0≤n≤2, X is a halogen, and Ra For C1-C 20 The hydrocarbon group; the general formula of the titanium compound is TiX. N (OR b ) 4-N , where R b For C1-C 20 The hydrocarbon group, where X is a halogen and N is 1-4.

[0111] According to a specific embodiment of the present invention, preferably, the magnesium compound is an alkoxide of magnesium dihalide; or, the magnesium compound is a liquid magnesium compound (a magnesium compound dissolved in a liquid); or, the magnesium compound is a derivative in which at least one halogen atom in a magnesium dihalide molecule is replaced by an alkyl group or a haloalkyl group; preferably, it is an alkyloxy magnesium compound; more preferably, it is an alkoxy magnesium and / or an aryloxy magnesium.

[0112] According to a specific embodiment of the present invention, preferably, the titanium compound includes one or a combination of two or more of titanium tetrachloride, titanium tetrabromide, titanium tetraiodide, and titanium alkoxyhalides.

[0113] According to a specific embodiment of the present invention, preferably, the alkyl titanium halide includes one or a combination of two or more of methoxy titanium trichloride, ethoxy titanium trichloride, propoxy titanium trichloride, n-butoxy titanium trichloride, dimethoxy titanium dichloride, diethoxy titanium dichloride, dipropoxy titanium dichloride, di-n-butoxy titanium dichloride, trimethoxy titanium chloride, triethoxy titanium chloride, tripropoxy titanium chloride, and tri-n-butoxy titanium chloride.

[0114] According to a specific embodiment of the present invention, preferably, the titanium compound is titanium tetrachloride.

[0115] According to a specific embodiment of the present invention, preferably, the molar ratio of the internal electron donor compound to the magnesium compound calculated as magnesium element is 0.01-5.0, more preferably 0.05-3.0.

[0116] The present invention does not specifically limit the preparation method of the above-mentioned solid catalyst components, which can be carried out according to the following listed methods:

[0117] Method 1: A magnesium alkoxide or magnesium chloroalkoxide, excess TiCl4, and an internal electron donor compound are reacted at a temperature of 80℃-135℃; preferably, a compound of the general formula TiX can be used. N (OR b ) 4-N Titanium compounds (where R) b For C1-C 20 The hydrocarbon group, where X is a halogen and N = 1-4; preferably TiCl4) and the general formula MgCl2·mR aThe adduct of OH (where m is a number from 0.1 to 6, preferably 2 to 4, and R) a For C1-C 20 Solid catalyst components are prepared by reacting hydrocarbon-based compounds (with internal electron donors); wherein the general formula is MgCl2·mR a OH adducts can be suitably prepared into spherical form by mixing an alcohol and magnesium chloride in the presence of an inert hydrocarbon immiscible with the adduct, followed by rapid quenching of the emulsion, thereby solidifying the adduct into spherical particles (see disclosures in US4399054 and US4469648). The spherical adducts obtained by this method can react directly with titanium compounds, or they can be pre-treated with a thermally controlled dealcoholization process (80°C–130°C) to obtain a dealcoholization adduct (wherein the molar number of alcohol is generally less than 3, preferably between 0.1 and 2.5), before proceeding with subsequent reactions.

[0118] For example, the adduct or dealcohol adduct is suspended in cold TiCl4 (typically -25°C to 0°C) to react with a titanium compound, and the mixture is heated to 80°C to 130°C and held at this temperature for 0.5 to 2 hours. The treatment with TiCl4 can be performed once or multiple times, and an internal electron donor compound can be added during the TiCl4 treatment. This treatment can be repeated once or multiple times.

[0119] Method 2: A magnesium compound is dissolved in a solvent system consisting of an organic epoxy compound, an organophosphorus compound, and an inert diluent to form a homogeneous solution. This solution is then mixed with a titanium compound, and a solid is precipitated in the presence of a precipitation aid. This solid is treated with an internal electron-donating compound to load the compound onto the solid. If necessary, further treatment with titanium tetrahalide and an inert diluent is performed. The precipitation aid is one of organic anhydrides, organic acids, ethers, or ketones. The components, per mole of magnesium halide, are: organic epoxy compound 0.2-10 mol, organophosphorus compound 0.1-3 mol, precipitation aid 0-1.0 mol, and Ti compound 0.5-150 mol (based on moles of titanium).

[0120] Method 3: React a TiCl4 or hydroxyl-titanium aromatic hydrocarbon solution (e.g., toluene, xylene, etc.) with a dialkoxymagnesium compound such as magnesium (preferably diethoxymagnesium) or diaryloxymagnesium at -25-0°C, and halogenate at 80-130°C. This treatment with the TiCl4 aromatic hydrocarbon solution can be repeated once or multiple times, and an internal electron donor compound can be added once or in batches during multiple such treatments. For example, the preparation method of the titanium-containing solid catalyst component disclosed in US5077357 can be used as follows: Add magnesium ethoxy, tetraethoxytitanium, o-cresol, ethanol, and chlorobenzene sequentially, and stir; quickly add a TiCl4 / chlorobenzene solution to the above liquid, heat until completely dissolved, and continue heating to a specific temperature; use N2 to bubble away the ethanol reactants, continue stirring for a certain period of time, then wash once with hot chlorobenzene, wash twice with isooctane, and then dry with N2 to obtain the support. Alternatively, as in another example: TiCl4, tetraethoxytitanium, ethoxymagnesium and o-cresol are added to chlorobenzene in sequence and stirred; ethanol is added, and after the ethoxymagnesium dissolves at high temperature, stirring is continued for 3 hours; the mixture is filtered while hot, then washed once with warm chlorobenzene, once with isooctane, and finally dried with N2.

[0121] Method 4: Magnesium dichloride is pre-activated using existing methods, and then treated with excess TiCl4 at approximately 80°C-135°C, wherein the solution contains an internal electron-donating compound. The solid is treated with TiCl4 multiple times and washed with hexane to remove any unreacted TiCl4.

[0122] Method 5: Prepare the titanium-containing solid catalyst component according to the preparation method disclosed in CN1208045: First, contact the liquid magnesium compound and the liquid titanium compound at low temperature in the presence of a compound selected from alcohols, phenols, ketones, aldehydes, ethers, amines, pyridines and esters to precipitate a solid. The contact temperature is generally -70°C to 200°C, preferably -30°C to 130°C. During the contact process, treat with an internal electron donor compound.

[0123] Method Six: Anhydrous magnesium chloride and an internal electron donor compound are co-milled under conditions where magnesium dichloride is activated. The resulting product can be treated once or multiple times with excess TiCl4 at a temperature of 80°C-130°C, followed by washing with a hydrocarbon solvent until chloride ions are removed. A more detailed method is as follows: The product obtained by co-milling anhydrous magnesium dichloride, a titanium compound, and an internal electron donor compound is treated with a haloalkane such as 1,2-dichloroethane, chlorobenzene, or dichloromethane. This treatment is carried out at a temperature between 40°C and the boiling point of the haloalkane for 1-4 hours, followed by washing with an inert hydrocarbon solvent such as hexane.

[0124] Method 7: Magnesium compounds supported on inorganic oxides such as SiO2, alumina, or porous silica gel are used as supports for preparation. The mixture is then activated using well-known methods and treated with an excess of TiCl4 at a temperature of approximately 80℃-135℃. During the treatment process, an internal electron donor compound is added.

[0125] The reaction of the above-mentioned catalyst components leads to the formation of magnesium halides in an active form. Typical crystalline magnesium halides have a regular structure and can support very little Ti, resulting in low catalytic activity. To prepare highly active supported catalysts, magnesium halides must undergo activation treatment. Activation methods include using physical and / or chemical methods to prepare them into microcrystals so that active centers are supported on the surface, edges, and defects of the magnesium halide. These treated magnesium halide microcrystals suitable for supporting Ti are called "activated magnesium halides." Besides these reactions, other methods are known in the literature to form magnesium halides in an active form from starting materials different from magnesium halides.

[0126] In any method for preparing the catalyst component, the aforementioned internal electron donor compound can be added directly or optionally, for example, in situ prepared using a suitable precursor that can be converted in the desired internal electron donor compound via known chemical reactions such as esterification or transesterification. Typically, the aforementioned internal electron donor compound is used at a molar ratio of 0.01-5, preferably 0.05-3.0, relative to the molar number of MgCl2. Furthermore, the internal electron donor compound can be added simultaneously or separately during the preparation process, either in batches or in any order and combination.

[0127] The present invention also provides a catalyst for olefin polymerization, the catalyst comprising the above-described catalyst components and an organoaluminum compound.

[0128] According to a specific embodiment of the present invention, preferably, the organoaluminum compound has the general formula AlR c p X (3-p) , where R c It is hydrogen or C1-C 20 The hydrocarbon group, X is a halogen, and p is an integer 0 ≤ p ≤ 3.

[0129] According to a specific embodiment of the present invention, preferably, the organoaluminum compound includes one or more of the following: trialkylaluminum compound, alkylaluminum halide, alkylaluminum hydride, alkylaluminum sesquichloride, and alkylaluminoxane.

[0130] According to a specific embodiment of the present invention, preferably, the trialkylaluminum compound includes one or more of trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-butylaluminum, tri-n-hexylaluminum, and trioctylaluminum; the alkylaluminum halide includes AlEt2Cl; the alkylaluminum sesquichloride includes Al2Et3Cl3; more preferably, the organoaluminum compound is a mixture of AlEt2Cl and Al2Et3Cl3.

[0131] According to a specific embodiment of the present invention, preferably, the molar ratio of the organoaluminum compound to the titanium atoms in the catalyst component is 1-1000:1, more preferably 50-800.

[0132] According to a specific embodiment of the present invention, preferably, the catalyst further includes an external electron donor.

[0133] According to a specific embodiment of the present invention, preferably, the external electron donor is a siloxane compound.

[0134] According to a specific embodiment of the present invention, preferably, the general formula of the siloxane compound is R'. t Si(OR”) 4-t In this context, R' and R” are each independently selected from C1-C 18 The hydrocarbon group, where t is an integer 0 ≤ t ≤ 3.

[0135] According to a specific embodiment of the present invention, preferably, R' and R” each contain heteroatoms.

[0136] According to a specific embodiment of the present invention, preferably, the heteroatom includes one or more combinations of N, O, S, P, and Si.

[0137] According to a specific embodiment of the present invention, preferably, the siloxane compound includes trimethylmethoxysilane, trimethylethoxysilane, tri-n-propylmethoxysilane, tri-n-propylethoxysilane, tri-n-butylmethoxysilane, triisobutylethoxysilane, tricyclohexylmethoxysilane, tricyclohexylethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, di-n-propyldimethoxysilane, diisopropyldimethoxysilane, di-n-propyldiethoxysilane, diisopropyldiethoxysilane, di-n-butyldiethoxysilane, diisobutyldiethoxysilane, di-tert-butyldimethoxysilane, di-tert-butyldimethoxysilane, di-n-butyldimethoxysilane, diisobutyldimethoxysilane, di-tert-butyldiethoxysilane. Di-n-butyldiethoxysilane, n-butylmethyldimethoxysilane, di(2-ethylhexyl)dimethoxysilane, di(2-ethylhexyl)diethoxysilane, dicyclohexyldimethoxysilane, dicyclohexyldiethoxysilane, dicyclopentyldimethoxysilane, dicyclopentyldiethoxysilane, cyclohexylmethyldimethoxysilane, cyclohexylmethyldiethoxysilane, cyclohexylethyldimethoxysilane, cyclohexylisopropyldimethoxysilane, cyclohexylethyldiethoxysilane, cyclopentylmethyldimethoxysilane, cyclopentylmethyldiethoxysilane, cyclopentylethyldimethoxysilane, cyclopentylethyldiethoxysilane, cyclopentylisopropyldiethoxysilane, cyclopentylisobutyldimethoxysilane, cyclohexyl-n-propyldimethoxysilane Cyclohexyl-n-propyldiethoxysilane, cyclohexyl-n-butyldiethoxysilane, pentylmethyldimethoxysilane, diphenyldimethoxysilane, pentylmethyldiethoxysilane, pentylethyldimethoxysilane, pentylethyldiethoxysilane, cyclohexyldimethylmethoxysilane, cyclohexyldiethylmethoxysilane, cyclohexyldiethylmethoxysilane, cyclohexyldiethylethoxysilane, 2-ethylhexyltrimethoxysilane, cyclohexyldimethoxysilane, cyclohexyldiethoxysilane, 2-ethylhexyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, isopropyltrimethoxysilane, isopropyltriethoxysilane, n-butyltrimethoxysilane, isobutyl Trimethoxysilane, tert-butyltrimethoxysilane, n-butyltriethoxysilane, cyclohexyltrimethoxysilane, cyclohexyltriethoxysilane, cyclopentyltrimethoxysilane, cyclopentyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, 2-ethylhexyltrimethoxysilane, 2-ethylhexyltriethoxysilane, pentyltrimethoxysilane, pentyltriethoxysilane, phenyltriethoxysilane, tetramethoxysilane, tetraethoxysilane, cyclohexylcyclopentyldimethoxysilane, cyclohexylcyclopentyldiethoxysilane, cyclohexylcyclopentyldipropoxysilane, 3-methylcyclohexylcyclopentyldimethoxysilane, 4-methylcyclohexylcyclopentyldimethoxysilane, 3,5-dimethylcyclopentyldimethoxysilane, 3,The following are included in the list of one or more of the following: 5-dimethylcyclohexylcyclopentyldimethoxysilane, 3-methylcyclohexylcyclohexyldimethoxysilane, di(3-methylcyclohexyl)dimethoxysilane, 4-methylcyclohexylcyclohexyldimethoxysilane, di(4-methylcyclohexyl)dimethoxysilane, 3,5-dimethylcyclohexylcyclohexyldimethoxysilane, di(3,5-dimethylcyclohexyl)dimethoxysilane, tetrapropoxysilane, tetrabutoxysilane, methyl tert-butyldimethoxysilane, 2-ethylpiperidinyl-2-tert-butyldimethoxysilane, (1,1,1-trifluoro-2-propyl)-2-ethylpiperidinyldimethoxysilane, and (1,1,1-trifluoro-2-propyl)-methylmethoxysilane.

[0138] According to a specific embodiment of the present invention, preferably, the siloxane compound includes di-n-propyl dimethoxysilane, diisopropyl dimethoxysilane, di-n-butyl dimethoxysilane, diisobutyl dimethoxysilane, di-tert-butyl dimethoxysilane, di-n-butyl diethoxysilane, tert-butyl trimethoxysilane, dicyclohexyl dimethoxysilane, dicyclohexyl diethoxysilane, cyclohexylmethyl dimethoxysilane, and cyclohexylethyl diethoxysilane. One or more combinations of cyclohexylethyldimethoxysilane, cyclohexylethyldiethoxysilane, cyclopentylmethyldimethoxysilane, cyclopentylmethyldiethoxysilane, cyclopentylethyldimethoxysilane, cyclohexylcyclopentyldimethoxysilane, cyclohexylcyclopentyldiethoxysilane, 3-methylcyclohexylcyclopentyldimethoxysilane, 4-methylcyclohexylcyclopentyldimethoxysilane, and 3,5-dimethylcyclopentyldimethoxysilane.

[0139] According to a specific embodiment of the present invention, preferably, the siloxane compound includes one or more combinations of cyclohexylmethyldimethoxysilane, diisopropyldimethoxysilane, di-n-butyldimethoxysilane, diisobutyldimethoxysilane, diphenyldimethoxysilane, phenyltriethoxysilane, methyl tert-butyldimethoxysilane, dicyclopentyldimethoxysilane, 2-ethylpiperidinyl-2-tert-butyldimethoxysilane, (1,1,1-trifluoro-2-propyl)-2-ethylpiperidinyldimethoxysilane, (1,1,1-trifluoro-2-propyl)-methyldimethoxysilane, cyclohexyltrimethoxysilane, tert-butyltrimethoxysilane, and tert-hexyltrimethoxysilane.

[0140] According to a specific embodiment of the present invention, preferably, the molar ratio of silicon in the external electron donor to titanium in the catalyst component is 0.002-100, more preferably 0.01-20, and even more preferably 0.01-5.

[0141] Preferably, the catalyst further includes an activity modifier.

[0142] According to a specific embodiment of the present invention, preferably, the activity modifier is a piper ester represented by formula VIII:

[0143]

[0144]

[0145] In equation VIII, R 43 Selected from C1-C 20 Straight-chain or branched alkyl groups and their derivatives, C3-C 20 cycloalkyl, C6-C 20 aryl groups and their derivatives, C7-C 20 Araneyl groups and their derivatives, C2-C 10 olefin group, C 10 -C 20 Fused ring aryl, C 10 -C 20 The ester group; preferably, R 43 It also contains heteroatoms, which include one or more combinations of N, O, S, P, and Si.

[0146] According to a specific embodiment of the present invention, preferably, in formula VIII, R 43 Selected from methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, cyclopentyl, n-hexyl, cyclohexyl, heptyl, octyl, nonyl, decyl, C 11 -C 20 Straight-chain or branched alkyl groups, and the following substituents with 20 or fewer carbon atoms: alkenyl, phenyl, m-chlorophenyl, p-chlorophenyl, o-chlorophenyl, m-methoxyphenyl, p-methoxyphenyl, o-methoxyphenyl, p-methylphenyl, p-nitrophenyl, m-nitrophenyl, benzyl and its derivatives, phenethyl and its derivatives, furanyl, pyrroleyl, thiophenyl, indene.

[0147] According to a specific embodiment of the present invention, preferably, the piperate ester includes one or more of the following: methyl piperate, ethyl piperate, n-propyl piperate, isopropyl piperate, n-butyl piperate, isobutyl piperate, n-pentyl piperate, isopentyl piperate, n-octyl piperate, isooctyl piperate, cyclohexyl piperate, and phenyl piperate.

[0148] According to a specific embodiment of the present invention, preferably, the molar ratio of the active regulator to the external electron donor is (0.02-50):1, more preferably (0.1-10):1.

[0149] The present invention also provides an application of the above-mentioned catalyst in olefin polymerization.

[0150] According to a specific embodiment of the present invention, preferably, the olefin comprises a straight-chain or branched olefin, more preferably one or a combination of two or more of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 3-methyl-1-butene, 4-methyl-1-pentene, butadiene, vinylcyclopentene, and vinylcyclohexene.

[0151] According to a specific embodiment of the present invention, preferably, the polymerization includes ethylene and / or propylene polymerization.

[0152] According to a specific embodiment of the present invention, preferably, the polymerization includes homopolymerization or copolymerization.

[0153] According to a specific embodiment of the present invention, preferably, during the catalytic process, the order of adding the components in the catalyst is arbitrary, with the organoaluminum compound being added to the polymerization system first, followed by the external electron donor and the activity regulator, and finally the catalyst components.

[0154] According to a specific embodiment of the present invention, preferably, the polymerization can be carried out with or without a solvent; the olefin can be in the gas phase or the liquid phase; more preferably, hydrogen can be further added as a molecular weight regulator (polymerization can also be carried out without a molecular weight regulator); the polymerization is a continuous polymerization or a batch polymerization, and the polymerization can be carried out in one step, two steps or multiple steps.

[0155] According to a specific embodiment of the present invention, preferably, the polymerization temperature is ≤200℃, more preferably 20-100℃, and even more preferably 40-80℃; the polymerization pressure is ≤10MPa, more preferably 0.3-5MPa.

[0156] This invention provides a catalyst component containing a compounded internal electron donor compound. The activity of quercetin ether or quercetin alcohol ester internal electron donor, when combined with a Lewis base compound, is significantly enhanced, exceeding the activity of any single compound used alone. The quercetin ether or quercetin alcohol ester internal electron donor exhibits excellent compatibility with various Lewis base compounds, allowing for the adjustment of catalyst performance and polymer parameters by combining it with different Lewis bases. The addition of a piperidine ester activity modifier during polymerization of this invention can suppress the initial catalyst activity surge, thus mitigating temperature fluctuations within the polymerization reactor and ensuring a more stable polymerization reaction, which is beneficial for industrial production. Detailed Implementation

[0157] In order to provide a clearer understanding of the technical features, objectives and beneficial effects of the present invention, the technical solution of the present invention will now be described in detail below, but it should not be construed as limiting the scope of implementation of the present invention.

[0158] The isotacticity of polymers was determined by the heptane extraction method (boiling heptane extraction for 6 hours): two grams of dry polymer sample were placed in an extractor and extracted with boiling heptane for 6 hours. The residue was then dried to constant weight. The ratio of the obtained polymer weight (g) to 2 is the isotacticity.

[0159] The bulk density of the polymer was determined using the method specified in JB / T 2412-2008.

[0160] Lewis base compounds source:

[0161] 9,9-Dimethoxymethylfluorene, commercially available, CAS No. 182121-12-6;

[0162] 2-Isopropyl-2-isopentyl-1,3-dimethoxypropane was synthesized according to CN1041752A;

[0163] Dibutyl phthalate, commercially available, CAS No. 84-74-2;

[0164] Diethyl 2,3-diisopropylsuccinate was synthesized according to CN1313869A;

[0165] 2,4-Pentanediol dibenzoate was synthesized according to CN1580038A;

[0166] 1,2-Ceramide-4-tert-butyl-1,2-dibenzoate was synthesized according to CN102325808A;

[0167] Ethyl benzoate, commercially available, CAS No. 93-89-0.

[0168] The activity modifiers, piperate esters, are ethyl piperate, cyclohexyl piperate, and phenyl piperate. They are prepared by esterification reactions of piperic acid with the corresponding alcohols.

[0169] Preparation example: Synthesis of quercetin ether shown in Formula I

[0170] Quercetin ether: The synthetic steps are described in Tetrahedron Letters, Volume 54, Issue 47, November 2013, Pages 6345-6348. Quercetin ethers with other substituents are synthesized using the methods described in the above literature, selecting halogenated derivatives with the corresponding substituents.

[0171] Table 1 shows the quercetin ether compounds of Formula I.

[0172]

[0173] Preparation example: Synthesis of quercetin ester as shown in Formula II

[0174] Quercetin benzoate, the synthetic steps are described in Molecules 2010, vol 15, #7, pp. 4722-4736. Quercetin esters with other substituents are synthesized using the methods described in the above literature, selecting the corresponding acyl chlorides for synthesis.

[0175] The quercetin ester compounds shown in Formula II of Table 2

[0176]

[0177]

[0178] Preparation of catalyst components

[0179] Example 1

[0180] This embodiment provides a catalyst component, the preparation method of which is as follows:

[0181] In a 500 mL stirred flask fully purged with nitrogen, 10 g of MgCl2·2.5C2H5OH microspheres and 150 mL of titanium tetrachloride were added to prepare a suspension. The suspension was then maintained at -10 °C for 1 hour, slowly heated to 90 °C, and 3.6 mmol of quercetin methyl ether and 2.4 mmol of 9,9-dimethoxymethylfluorene were added. The temperature was further increased to 110 °C and held constant for 1 hour. The liquid was then filtered off, and the resulting solid was washed three times with 120 mL of titanium tetrachloride at 125 °C. It was then washed four times with 150 mL of hexane at 60 °C. Finally, the liquid was filtered off and dried to obtain solid catalyst component C1. The titanium content, internal electron donor content, and polymerization data of this solid catalyst component are shown in Table 3.

[0182] Example 2-23

[0183] Examples 2-23 each provide catalyst components C2-C23, the preparation process of which is as shown in Example 1, except that the internal electron donors are replaced with the internal electron donor compounds in Table 3 in sequence.

[0184] Example 24

[0185] This embodiment provides a catalyst component, the preparation method of which is as follows:

[0186] In a 500 mL stirred flask fully purged with nitrogen, 10 g of anhydrous magnesium chloride, 150 mL of toluene, 17 mL of epichlorohydrin, and 16 mL of tributyl phosphate were added at room temperature. The mixture was heated to 50 °C with stirring and maintained for 2 hours until the solid was completely dissolved. Then, 2.40 g of phthalic anhydride was added, and the mixture was maintained for another hour. The solution was cooled to -25 °C, and 110 mL of titanium tetrachloride was added dropwise over 1 hour. The temperature was slowly raised to 80 °C, and the solid was gradually eluted during the heating process. 3.6 mmol of quercetin methyl ether and 2.4 mmol of... 9,9-Dimethoxymethylfluorene was heated at 80°C for 1 hour; after filtration, it was washed twice with 200 mL of toluene, then 120 mL of toluene and 80 mL of titanium tetrachloride were added, and the temperature was further increased to 110°C and held for 2 hours. The liquid was then filtered clean, and the process was repeated once more. The liquid was filtered off, and the resulting solid was washed once with 100 mL of dichloroethane and four times with hexane. After drying, solid catalyst component C19 was obtained. The titanium content, internal electron donor content, and polymerization data of this solid catalyst component are shown in Table 3.

[0187] Example 25

[0188] This embodiment provides a catalyst component, the preparation method of which is as follows:

[0189] In a 500 mL stirred flask equipped with a stirrer and fully purged with nitrogen, 8 g of magnesium diethoxy and 100 mL of toluene were added to prepare a suspension. 25 mL of titanium tetrachloride was added dropwise at -15 °C. After the addition was complete, the temperature was slowly raised to 0 °C, and then 50 mL of titanium tetrachloride was added dropwise. The temperature was then slowly raised to 80 °C, and 3.6 mmol of quercetin methyl ether and 2.4 mmol of 9,9-dimethoxymethylfluorene were added. The temperature was further raised to 110 °C and held constant for 2 hours. The liquid was then filtered off. The resulting solid was washed three times with 100 mL of titanium tetrachloride at 125 °C, and then four times with 120 mL of hexane at 60 °C. The liquid was filtered off and dried to obtain the solid catalyst component C20. The titanium content, internal electron donor content, and polymerization data of this solid catalyst component are shown in Table 3.

[0190] Comparative Examples 1-5

[0191] This comparative example provides catalyst components D1-D5, which are prepared in the same manner as in Example 1, except that the internal electron donor is 6 mmol of a1-a5.

[0192] Comparative Example 6

[0193] This comparative example provides a catalyst component D6, which is prepared in the same way as in Example 1, except that the internal electron donor is 6 mmol of di-n-butyl phthalate (b3).

[0194] Comparative Example 7

[0195] This comparative example provides a catalyst component D7, which is prepared in the same way as in Example 1, except that the internal electron donor is 6 mmol of 9,9-dimethoxyfluorene (b1).

[0196] Aggregation 1

[0197] The catalyst components obtained above were used as components of olefin polymerization catalysts for polymerization evaluation:

[0198] After purging the 5L stainless steel reactor with nitrogen, 5mL of a 0.5mol / L triethylaluminum hexane solution, 1mL of a 0.1mol / L methylcyclohexyldimethoxysilane hexane solution, and 10mg of the prepared catalyst component were added. Then, 10mL of hexane was added to flush the feed line, followed by 2L (under standard conditions) of hydrogen and 2.5L of purified propylene. The reaction was prepolymerized at 25℃ for 5 minutes, then the temperature was raised to 70℃, and polymerization was carried out at this temperature for 1 hour. After the reaction was completed, the reactor was cooled and stirring was stopped. The reaction product was discharged and dried to obtain the polymer. Polymerization data are shown in Table 3.

[0199] Table 3

[0200]

[0201]

[0202] b1: 9,9-Dimethoxymethylfluorene;

[0203] b2: 2-Isopropyl-2-isopentyl-1,3-dimethoxypropane;

[0204] b3: Dibutyl phthalate;

[0205] b4: Diethyl 2,3-diisopropylsuccinate;

[0206] b5: 2,4-Pentanediol dibenzoate;

[0207] b6: 1,2-benzenediol-4-tert-butyl-1,2-dibenzoate;

[0208] b7: Ethyl benzoate

[0209] As shown in Table 3, quercetin ether / ester compounds exhibited good compatibility and significantly improved polymerization activity when combined with diether compounds, succinate compounds, glycol ester compounds, ortho-phenylene diester compounds, monocarboxylic acid esters, and aromatic dicarboxylic acid esters in two-component and three-component formulations, respectively. These formulations were superior to any single formulation used alone (Comparative Examples 1–7). The resulting polymers exhibited high isotacticity, regular particle shape, high bulk density, and an adjustable molecular weight distribution within the range of 3–6.

[0210] Aggregation 2

[0211] The polymerization was evaluated using catalyst components Cat-1 and Cat-19 as components of the olefin polymerization catalyst:

[0212] After the 5L stainless steel reactor was fully purged with nitrogen, 5 mL of a 0.5 mol / L triethylaluminum hexane solution, 1 mL of a 0.1 mol / L methylcyclohexyldimethoxysilane hexane solution, the activity modifier (0.1 mol / L hexane solution) of the types and amounts described in Table 4, and 10 mg of the prepared catalyst component were added. Then, 10 mL of hexane was added to flush the feed line, followed by 2 L (under standard conditions) of hydrogen and 2.5 L of purified propylene. The reaction was prepolymerized at 25°C for 5 minutes, then the temperature was raised to 70°C, and polymerization was carried out at this temperature for 1 hour. After the reaction was completed, the reactor was cooled and stirring was stopped. The reaction product was discharged and dried to obtain the polymer. The polymerization data are shown in Table 4.

[0213] Table 4

[0214]

[0215]

[0216] Activity regulators: a: ethyl piperate; b: cyclohexyl piperate; c: phenyl piperate.

[0217] As shown in Table 4, when catalysts Cat-1 and Cat-19 were used without an activity regulator during polymerization, the temperature fluctuation inside the reactor was within ±3℃. After adding piperitate, the temperature fluctuation was significantly reduced, and the resulting polypropylene still maintained a high level of isotacticity and packing density. The catalytic activity was slightly reduced, but it was still significantly higher than that of the comparative ratio, making it more suitable for meeting the requirements of stable operation of industrial plants.

[0218] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the present invention.

Claims

1. A component of an olefin polymerization catalyst, characterized in that, It comprises: Mg, Ti, halogen, at least one internal electron donor a compound and at least one internal electron donor b compound, wherein the internal electron donor a compound is selected from the quercetin derivative internal electron donors shown in Formula I, and the internal electron donor b compound is selected from Lewis base compounds; In formula I, R 1 Each is independently selected from H, halogen, C1-C 20 Hydrocarbon group.

2. The olefin polymerization catalyst component according to claim 1, characterized in that, R 1 Each of them also contains heteroatoms independently, which are selected from one or more combinations of N, O, S, P, Si and halogens.

3. The olefin polymerization catalyst component according to claim 1, characterized in that, In formula I, R 1 The following substituents are selected from H, halogens, and 20 or fewer carbon atoms: straight-chain or branched alkyl, cycloalkyl, alkenyl, ester, phenyl, alkylphenyl, phenylalkyl, indene, benzyl, haloalkyl, heteroatom-containing alkyl, halocycloalkyl, heteroatom-containing cycloalkyl, halophenyl, heteroatom-containing phenyl, haloalkylphenyl, heteroatom-containing alkylphenyl, halophenylalkyl, heteroatom-containing phenylalkyl, haloindenyl, heteroatom-containing indene, halobenzyl, heteroatom-containing benzyl, heterocyclic aryl substituents; the heteroatom includes one or more combinations of N, O, S, P, and Si.

4. The olefin polymerization catalyst component according to claim 1, characterized in that, In formula I, R 1 Selected from H, halogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, cyclopentyl, n-hexyl, cyclohexyl, heptyl, octyl, nonyl, decyl, C 11 -C 20 The following substituents with 20 or fewer carbon atoms, whether linear or branched alkyl groups: alkenyl, phenyl, m-chlorophenyl, p-chlorophenyl, o-chlorophenyl, m-methoxyphenyl, p-methoxyphenyl, o-methoxyphenyl, p-methylphenyl, p-nitrophenyl, m-nitrophenyl, benzyl and its derivatives, phenethyl and its derivatives, furanyl, pyrroleyl, thiophenyl, indene; more preferably, the alkenyl group includes propenyl, butenyl, pentenyl, and hexenyl.

5. The olefin polymerization catalyst component according to claim 1, characterized in that, The internal electron donor of the quercetin derivative includes quercetin ether internal electron donors, which include one or more of quercetin ethyl ether, quercetin methyl ether, quercetin benzyl ether, and quercetin p-methoxybenzyl ether.

6. The olefin polymerization catalyst component according to claim 1, characterized in that, The internal electron donor of the quercetin derivative includes an internal electron donor of quercetin alcohol esters, wherein the internal electron donor of quercetin alcohol esters has the quercetin alcohol ester structure shown in Formula II: In Equation II, R 2 Each is independently selected from H, halogen, C1-C 20 The hydrocarbon group; preferably, R 2 Each of them also contains heteroatoms independently, which are selected from one or more combinations of N, O, S, P, Si and halogens.

7. The olefin polymerization catalyst component according to claim 6, characterized in that, In Equation II, R 2 The following substituents are selected from H, halogens, and 20 or fewer carbon atoms: straight-chain or branched alkyl, cycloalkyl, alkenyl, ester, phenyl, alkylphenyl, phenylalkyl, indene, benzyl, haloalkyl, heteroatom-containing alkyl, halocycloalkyl, heteroatom-containing cycloalkyl, halophenyl, heteroatom-containing phenyl, haloalkylphenyl, heteroatom-containing alkylphenyl, halophenylalkyl, heteroatom-containing phenylalkyl, haloindenyl, heteroatom-containing indene, halobenzyl, heteroatom-containing benzyl, heterocyclic aryl substituents; the heteroatom includes one or more combinations of N, O, S, P, and Si.

8. The olefin polymerization catalyst component according to claim 6, characterized in that, In Equation II, R 2 Selected from H, halogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, cyclopentyl, n-hexyl, cyclohexyl, heptyl, octyl, nonyl, decyl, C 11 -C 20 The following substituents with 20 or fewer carbon atoms, either straight-chain or branched alkyl groups: alkenyl, phenyl, m-chlorophenyl, p-chlorophenyl, o-chlorophenyl, m-methoxyphenyl, p-methoxyphenyl, o-methoxyphenyl, p-methylphenyl, p-nitrophenyl, m-nitrophenyl, benzyl and its derivatives, phenethyl and its derivatives, furanyl, pyrroleyl, thiophenyl, indene; preferably, the alkenyl group includes propenyl, butenyl, pentenyl, and hexenyl.

9. The olefin polymerization catalyst component according to claim 6, characterized in that, The electron donors of the quercetin esters include one or more of the following: quercetin benzoate, quercetin phenylacetate, quercetin m-chlorobenzoate, quercetin p-methoxybenzoate, quercetin p-nitrobenzoate, quercetin furanoate, quercetin isonicotinate, quercetin cyclohexylcarboxylate, quercetin ethyl ester, quercetin isobutyl ester, and quercetin n-octyl ester.

10. The olefin polymerization catalyst component according to claim 1, characterized in that, The internal electron donor compound b is selected from Lewis bases containing one or more electronegative groups, wherein the electron donor atom is selected from the group consisting of N, O, S, P, As or Sn; Preferably, the Lewis base is selected from electron-donating compounds of the diether, ester, diketone, and diamine classes.

11. The olefin polymerization catalyst component according to claim 1, characterized in that, The Lewis base compounds include 1,3-diether compounds having the structure shown in Formula III: In Equation III, R 3 R 4 R 5 R 6 R 7 and R 8 Whether the two are the same or different, they are each independently selected from H, C1-C. 20 Straight-chain or branched alkyl groups, C3-C 20 cycloalkyl, C5-C 20 aryl, C7-C 20 alkylaryl or C7-C 20 Aryl groups; R 9 and R 10 Whether the two are the same or different, they are each independently selected from C1-C. 20 Straight-chain or branched alkyl groups, C3-C 20 cycloalkyl, C5-C 20 aryl, C7-C 20 alkylaryl and C7-C 20 Aryl alkyl group; preferably, R 4 -R 10 One or more groups in R are linked to form a cyclic structure; preferably, R 5 -R 12 Each contains heteroatoms selected from one or more combinations of halogens, N, O, S, P, and Si.

12. The olefin polymerization catalyst component according to claim 1, characterized in that, The Lewis base compounds include 1,3-diether compounds having the structure shown in Formula IV: In Equation IV, there are eight R 17 Whether the same or different, each is independently selected from hydrogen, halogen, C1-C 14 Straight-chain or branched alkyl groups, C3-C 14 cycloalkyl, C6-C 14 aryl, C7-C 14 alkylaryl, C7-C 14 arylalkyl groups; Preferably, eight R 17 Each contains heteroatoms selected from one or more combinations of N, O, S, P, Si and halogens; Preferably, R 11 R 12 R 13 and R 14 Whether the two are the same or different, they are each independently selected from H, C1-C. 18 Straight-chain or branched alkyl groups, C3-C 20 cycloalkyl, C6-C 20 aryl, C7-C 20 alkylaryl or C7-C 20 Aryl groups; R 15 and R 16 Whether the two are the same or different, they are each independently selected from C1-C. 20 Straight-chain or branched alkyl groups, C3-C 20 cycloalkyl, C6-C 20 aryl, C7-C 20 alkylaryl and C7-C 20 Aryl alkyl group; preferably, R 11 -R 16 One or more groups in the structure are linked to form a ring structure; Preferably, R 11 -R 16 Each contains heteroatoms selected from one or more combinations of halogens, N, O, S, P, and Si.

13. The olefin polymerization catalyst component according to claim 11, characterized in that, The 1,3-diether compounds include 2-(2-ethylhexyl)-1,3-dimethoxypropane, 2-isopropyl-1,3-dimethoxypropane, 2-butyl-1,3-dimethoxypropane, 2-sec-butyl-1,3-dimethoxypropane, 2-cyclohexyl-1,3-dimethoxypropane, 2-phenyl-1,3-dimethoxypropane, 2-tert-butyl-1,3-dimethoxypropane, 2-cumyl-1,3-dimethoxypropane, 2-(2-phenylethyl)-1,3-dimethoxypropane, 2-(2-cyclohexylethyl)-1,3-dimethoxypropane, 2-(p-chlorophenyl)-1,3-dimethoxypropane, 2-(diphenylmethyl)-1,3-dimethoxypropane, 2-(1-naphthyl)-1 3-Dimethoxypropane, 2-(p-fluorophenyl)-1,3-dimethoxypropane, 2-(1-decahydronaphthyl)-1,3-dimethoxypropane, 2-(p-tert-butylphenyl)-1,3-dimethoxypropane, 2,2-dicyclohexyl-1,3-dimethoxypropane, 2,2-diethyl-1,3-dimethoxypropane, 2,2-dipropyl-1,3-dimethoxypropane, 2,2-dibutyl-1,3-dimethoxypropane, 2,2-diethyl-1,3-diethoxypropane, 2,2-dicyclopentyl-1,3-dimethoxypropane, 2,2-dipropyl-1,3-diethoxypropane, 2,2-dibutyl-1,3-diethoxypropane, 2-methyl-2-ethyl-1,3-dimethoxypropane 2-Methyl-2-propyl-1,3-dimethoxypropane, 2-methyl-2-benzyl-1,3-dimethoxypropane, 2-methyl-2-phenyl-1,3-dimethoxypropane, 2-methyl-2-cyclohexyl-1,3-dimethoxypropane, 2-methyl-2-methylcyclohexyl-1,3-dimethoxypropane, 2,2-bis(p-chlorophenyl)-1,3-dimethoxypropane, 2,2-bis(2-phenylethyl)-1,3-dimethoxypropane, 2,2-bis(2-cyclohexylethyl)-1,3-dimethoxypropane, 2-methyl-2-isobutyl-1,3-dimethoxypropane, 2-methyl-2-(2-ethylhexyl)-1,3-dimethoxypropane, 2,2-bis(2-ethylhexyl)-1 3-Dimethoxypropane, 2,2-bis(p-methylphenyl)-1,3-dimethoxypropane, 2-isopropyl-2-isopentyl-1,3-dimethoxypropane, 2-methyl-2-isopropyl-1,3-dimethoxypropane, 2,2-diisobutyl-1,3-dimethoxypropane, 2,2-diphenyl-1,3-dimethoxypropane, 2,2-dibenzyl-1,3-dimethoxypropane, 2-isopropyl-2-cyclopentyl-1,3-dimethoxypropane, 2,2-bis(cyclohexylmethyl)-1,3-dimethoxypropane, 2,2-diisobutyl-1,3-diethoxypropane, 2,2-diisobutyl-1,3-dibutoxypropane, 2-isobutyl-2-isopropyl-1,3-dimethoxypropane, 2,2-Di-sec-butyl-1,3-dimethoxypropane, 2,2-di-tert-butyl-1,3-dimethoxypropane, 2,2-dineopentyl-1,3-dimethoxypropane, 2-isopropyl-2-isopentyl-1,3-dimethoxypropane, 2-phenyl-2-benzyl-1,3-dimethoxypropane, 2-cyclohexyl-2-cyclohexylmethyl-1,3-dimethoxypropane, 1,1-bis(methoxymethyl)-cyclopentadiene, 1,1-bis(methoxymethyl)-2,3,4,5-tetramethylcyclopentadiene, 1,1-bis(methoxymethyl)-2,3,4,5-tetraphenylcyclopentadiene, 1,1-bis(methoxymethyl)-2,3,4,5-tetrafluorocyclopentadiene, 1,1-bis(methoxymethyl)-3,4-bicyclo Pentylcyclopentadiene, 1,1-bis(methoxymethyl)indene, 1,1-bis(methoxymethyl)-2,3-dimethylindene, 1,1-bis(methoxymethyl)-4,5,6,7-tetrahydroindene, 1,1-bis(methoxymethyl)-2,3,6,7-tetrafluoroindene, 1,1-bis(methoxymethyl)-4,7-dimethylindene, 1,1-bis(methoxymethyl)-3,6-dimethylindene, 1,1-bis(methoxymethyl)-4-phenylindene, 1,1-bis(methoxymethyl)-4-phenyl-2-methylindene, 1,1-bis(methoxymethyl)-4-cyclohexylindene, 1,1-bis(methoxymethyl)-7-(3,3,3-trifluoropropyl)indene, 1,1-bis(methoxymethyl)-7-trimethylsilane Indene, 1,1-bis(methoxymethyl)-7-trifluoromethyl indene, 1,1-bis(methoxymethyl)-4,7-dimethyl-4,5,6,7-tetrahydro indene, 1,1-bis(methoxymethyl)-7-methyl indene, 1,1-bis(methoxymethyl)-7-cyclopentyl indene, 1,1-bis(methoxymethyl)-7-isopropyl indene, 1,1-bis(methoxymethyl)-7-cyclopentyl indene 1,1-Bis(methoxymethyl)-7-cyclohexylindene, 1,1-bis(methoxymethyl)-7-tert-butylindene, 1,1-bis(methoxymethyl)-7-tert-butyl-2-methylindene, 1,1-bis(methoxymethyl)-7-phenylindene, 1,1-bis(methoxymethyl)-2-phenylindene, 1,1-bis(methoxymethyl)-1H-benzo[e]indene, 1,1-bis(methoxymethyl)-7-cyclohexylindene 9,9-bis(methoxymethyl)fluorene, 9,9-bis(methoxymethyl)-2,3,6,7-tetramethylfluorene, 9,9-bis(methoxymethyl)-2,3,4,5,6,7-hexafluorofluorene, 9,9-bis(methoxymethyl)-2,3-benzofluorene, 9,9-bis(methoxymethyl)-2,3-benzofluorene 6,7-Dibenzofluorene, 9,9-bis(methoxymethyl)-2,7-diisopropylfluorene, 9,9-bis(methoxymethyl)-1,8-dichlorofluorene, 9,9-bis(methoxymethyl)-2,7-dicyclopentylfluorene, 9,9-bis(methoxymethyl)-1,8-difluorofluorene, 9,9-bis(methoxymethyl)-1,2,3,4-tetrahydrofluorene, 9,One or more of 9-bis(methoxymethyl)-1,2,3,4,5,6,7,8-octahydrofluorene and 9,9-bis(methoxymethyl)-4-tert-butylfluorene.

14. The olefin polymerization catalyst component according to claim 1, characterized in that, The internal electron donors of the Lewis bases include carboxylic acid esters, which include monocarboxylic acid esters and / or polycarboxylic acid esters. Preferably, the polycarboxylic acid ester compounds include aromatic dicarboxylic acid ester compounds and / or aliphatic chain dicarboxylic acid ester compounds; Preferably, the aromatic dicarboxylic acid ester compounds include phthalate diesters and / or terephthalate diesters; Preferably, the phthalate diester compounds include dimethyl phthalate, diethyl phthalate, di-n-propyl phthalate, diisopropyl phthalate, di-n-butyl phthalate, diisobutyl phthalate, methyl ethyl phthalate, methyl isopropyl phthalate, methyl-n-propyl phthalate, ethyl-n-butyl phthalate, ethyl isobutyl phthalate, di-n-pentyl phthalate, diisopentyl phthalate, dihexyl phthalate, di-n-heptyl phthalate, di-n-octyl phthalate, diisooctyl phthalate, di(2,2-dimethylhexyl) phthalate, di(2-ethylhexyl) phthalate, di-n-nonyl phthalate, diisodecyl phthalate, and so on. Di(2,2-dimethylheptyl) phthalate, butyl isohexyl phthalate, butyl(2-ethylhexyl) phthalate, pentyl hexyl phthalate, pentyl isononyl phthalate, isopentyl decyl phthalate, undecyl pentyl phthalate, isopentyl isohexyl phthalate, hexyl(2-methylhexyl) phthalate, hexyl(2-ethylhexyl) phthalate, hexyl isononyl phthalate, hexyl decyl phthalate, heptyl(2-ethylhexyl) phthalate, heptyl isononyl phthalate, heptyl neononyl phthalate, and (2-ethylhexyl) isononyl phthalate. Preferably, the terephthalate diester compounds include dimethyl terephthalate, diethyl terephthalate, di-n-propyl terephthalate, diisopropyl terephthalate, di-n-butyl terephthalate, diisobutyl terephthalate, ethyl methyl terephthalate, methyl isopropyl terephthalate, ethyl-n-propyl terephthalate, ethyl-n-butyl terephthalate, and ethyl isobutyl terephthalate. Ester, di-n-pentyl terephthalate, diisopentyl terephthalate, dihexyl terephthalate, di-n-heptyl terephthalate, di-n-octyl terephthalate, diisooctyl terephthalate, di(2,2-dimethylhexyl) terephthalate, di(2-ethylhexyl) terephthalate, di-n-nonyl terephthalate, diisononyl terephthalate, diisodecyl terephthalate, di(2,2-dimethylhexyl) terephthalate 2-Dimethylethylheptyl) ester, n-butyl isohexyl terephthalate, n-butyl(2-ethylhexyl) terephthalate, n-pentyl hexyl terephthalate, n-pentyl isohexyl terephthalate, isopentylheptyl terephthalate, n-pentyl(2-ethylhexyl) terephthalate, n-pentyl isononyl terephthalate, isopentyl decyl terephthalate, n-pentyl undecyl terephthalate Alkyl esters, isopentyl isohexyl terephthalate, n-hexyl(2-ethylhexyl) terephthalate, n-hexyl isononyl terephthalate, n-hexyl n-decyl terephthalate, n-heptyl(2-ethylhexyl) terephthalate, n-heptyl isononyl terephthalate, n-heptyl neodecyl terephthalate, and (2-ethylhexyl) isononyl terephthalate, or a combination of two or more of these. Preferably, the aromatic dicarboxylic acid ester compound includes one or more of the following: diethyl phthalate, propyl butyl phthalate, diisopropyl terephthalate, di-n-butyl phthalate, diisobutyl phthalate, di-n-octyl phthalate, diisooctyl phthalate, di-n-butyl terephthalate, diisobutyl terephthalate, di-n-octyl terephthalate, diisooctyl terephthalate, di(2-ethylhexyl) terephthalate, and diisodecyl terephthalate.

15. The olefin polymerization catalyst component according to claim 1, characterized in that, The Lewis base compounds include succinate compounds having the structure shown in Formula V: In formula V, R 18 and R 19 Whether the two are the same or different, they are each independently selected from C1-C. 20 Straight-chain or branched alkyl groups, C2-C 20 alkenyl, C3-C 20 cycloalkyl, C6-C 20 aryl, C7-C 20 Aryl groups, C7-C 20 The alkylaryl group; preferably, R 18 and R 19 Each contains heteroatoms; R 20 -R 23 Each is independently selected from hydrogen, C1-C 20 Straight-chain or branched alkyl groups, C2-C 20 alkenyl, C3-C 20 cycloalkyl, C6-C 20 aryl, C7-C 20 Aryl groups, C7-C 20 alkylaryl; preferably, R 20 -R 23 Mutually bonded to form a ring; preferably, R 20 -R 23 Each contains heteroatoms; preferably, the heteroatoms include one or more combinations of N, O, S, P, Si, and halogens; Preferably, R 18 and R 19 Each group is independently selected from C1-C8 alkyl, C3-C8 cycloalkyl, C6-C8 aryl, C7-C8 aralkyl, and C7-C8 alkylaryl groups; preferably, R 18 and R 19 Each is independently selected from straight-chain primary alkyl or branched primary alkyl; preferably, R 18 and R 19 Each is independently selected from methyl, ethyl, n-propyl, n-butyl, isobutyl, neopentyl, 2-ethylhexyl, more preferably from ethyl, isobutyl, and neopentyl.

16. The olefin polymerization catalyst component according to claim 15, characterized in that, In formula V, R 20 -R 22 For hydrogen, R 23 Selected from C3-C 10 Branched alkyl groups, C3-C 10 cycloalkyl, C6-C 10 aryl, C7-C 10 Aryl groups, C7-C 10 The alkylaryl group; preferably, R 23 Selected from C3-C 10 Branched primary alkyl groups, C3-C 10 cycloalkyl groups.

17. The olefin polymerization catalyst component according to claim 15, characterized in that, The succinate compounds are monosubstituted succinate compounds, including diethyl sec-butyl succinate, diethyl hexyl succinate, diethyl cyclopropyl succinate, diethyl norbornyl succinate, diethyl methoxysuccinate, diethyl p-methoxyphenyl succinate, diethyl p-chlorophenyl succinate, diethyl phenyl succinate, diethyl cyclohexyl succinate, diethyl benzyl succinate, diethyl tert-butyl succinate, and isobutyl succinic acid. Diethyl ester, diethyl isopropyl succinate, diethyl neopentyl succinate, diethyl isopentyl succinate, diethyl (1-trifluoromethylethyl) succinate, diethyl fluorenyl succinate, diisobutyl sec-butyl succinate, diisobutyl hexyl succinate, diisobutyl cyclopropyl succinate, diisobutyl norbornyl succinate, diisobutyl trimethylsilyl succinate, diisobutyl methoxysuccinate, diisobutyl p-methoxyphenyl succinate, diisobutyl p-chlorophenoxysuccinate Cyclohexyl diisobutyl succinate, benzyl diisobutyl succinate, tert-butyl diisobutyl succinate, isobutyl diisobutyl succinate, isopropyl diisobutyl succinate, neopentyl diisobutyl succinate, isopentyl diisobutyl succinate, (1-trifluoromethylethyl) diisobutyl succinate, fluorenyl diisobutyl succinate, sec-butyl dineopentyl succinate, hexyl dineopentyl succinate, cyclopropyl dineopentyl succinate, norbornyl dineopentyl succinate, trimethylsilyl Dipentyl succinate, dipentyl methoxysuccinate, dipentyl p-chlorophenylsuccinate, dipentyl phenylsuccinate, dipentyl cyclohexylsuccinate, dipentyl benzylsuccinate, dipentyl tert-butylsuccinate, dipentyl isobutylsuccinate, dipentyl isopropylsuccinate, dipentyl neopentylsuccinate, dipentyl isopentylsuccinate, dipentyl isopentylsuccinate, dipentyl (1-trifluoromethylethyl)succinate, dipentyl fluorenylsuccinate, or a combination of two or more of these.

18. The olefin polymerization catalyst component according to claim 15, characterized in that, In formula V, R 20 -R 23 At least two groups are different from hydrogen, and each is independently selected from C1-C2. 20 Straight-chain or branched alkyl groups, C2-C 20 alkenyl, C3-C 20 cycloalkyl, C6-C 20 aryl, C7-C 20 Aryl groups, C7-C 20 alkylaryl; preferably, R 20 -R 23 Each contains heteroatoms.

19. The olefin polymerization catalyst component according to claim 15, characterized in that, R 20 -R 23 The two non-hydrogen groups in the formula are attached to the same carbon atom.

20. The olefin polymerization catalyst component according to claim 15, characterized in that, The succinate compounds are disubstituted succinate compounds, including diethyl 2,2-dimethylsuccinate, 2-ethyl-2-methylsuccinate, 2-benzyl-2-isopropylsuccinate, 2-cyclohexylmethyl-2-isobutylsuccinate, 2-cyclopentyl-2-n-butylsuccinate, 2,2-diisobutylsuccinate, 2-cyclohexyl-2-ethylsuccinate, 2-isopropyl-2-methylsuccinate, and 2-tetradecyl-2-ethylsuccinate. Diethyl 2-isobutyl-2-ethylsuccinate, 2-(1-trifluoromethylethyl)-2-methylsuccinate, 2-isopentyl-2-isobutylsuccinate, 2-phenyl-2-n-butylsuccinate, 2,2-dimethylsuccinate, 2-ethyl-2-methylsuccinate, 2-benzyl-2-isopropylsuccinate, 2-cyclohexylmethyl-2-isobutylsuccinate, 2-cyclopentyl-2-n-butylsuccinate, 2,2-diisobutylsuccinate, 2-cyclohexyl-2- Diisobutyl ethyl succinate, 2-isopropyl-2-methyldiisobutyl succinate, 2-tetradecyl-2-ethyldiisobutyl succinate, 2-isobutyl-2-ethyldiisobutyl succinate, 2-(1-trifluoromethylethyl)-2-methyldiisobutyl succinate, 2-isopentyl-2-isobutyldiisobutyl succinate, 2-phenyl-2-n-butyldiisobutyl succinate, 2,2-dimethyldineopentyl succinate, 2-ethyl-2-methyldineopentyl succinate, 2-benzyl-2-isopropyldineopentyl succinate, 2-cyclohexylmethyl-2-isobutyl Dipentyl succinate, 2-cyclopentyl-2-n-butyl succinate, 2,2-diisobutyl succinate, 2-cyclohexyl-2-ethyl succinate, 2-isopropyl-2-methyl succinate, 2-tetradecyl-2-ethyl succinate, 2-isobutyl-2-ethyl succinate, 2-(1-trifluoromethylethyl)-2-methyl succinate, 2-isopentyl-2-isobutyl succinate, and 2-phenyl-2-n-butyl succinate, or a combination of two or more of these.

21. The olefin polymerization catalyst component according to claim 15, characterized in that, In formula V, R 20 -R 23 The two non-hydrogen groups in the structure are attached to different carbon atoms.

22. The olefin polymerization catalyst component according to claim 15, characterized in that, The succinate compounds are disubstituted succinate compounds, including diethyl 2,3-di(trimethylsilyl)succinate, diethyl 2-sec-butyl-3-methylsuccinate, diethyl 2-(3,3,3-trifluoropropyl)-3-methylsuccinate, diethyl 2,3-di(2-ethylbutyl)succinate, diethyl 2,3-dibenzylsuccinate, diethyl 2,3-diisopropylsuccinate, diethyl 2,3-di(cyclohexylmethyl)succinate, diethyl 2,3-di-tert-butylsuccinate, diethyl 2,3-diisobutylsuccinate, diethyl 2,3-dineopentylsuccinate, diethyl 2,3-diisopentylsuccinate, and diethyl 2,3-di(1-trifluoromethylethyl)succinate. Ethyl ester, diethyl 2,3-di(tetradecyl)succinate, diethyl 2,3-difluorenylsuccinate, diethyl 2-isopropyl-3-isobutylsuccinate, diethyl 2-tert-butyl-3-isopropylsuccinate, diethyl 2-isopropyl-3-cyclohexylsuccinate, diethyl 2-isopentyl-3-cyclohexylsuccinate, diethyl 2-tetradecyl-3-cyclohexylsuccinate, diethyl 2-cyclohexyl-3-cyclopentylsuccinate, diisobutyl 2,3-di(trimethylsilyl)succinate, diisobutyl 2-sec-butyl-3-methylsuccinate, diisobutyl 2-(3,3,3-trifluoropropyl)-3-methylsuccinate, diisobutyl 2,3-di(2-ethylbutyl)succinate, diisobutyl 2,3-dibenzylsuccinate, 2, 3-Diisopropylsuccinate diisobutyl succinate, 2,3-di(cyclohexylmethyl)succinate diisobutyl succinate, 2,3-di-tert-butylsuccinate diisobutyl succinate, 2,3-diisobutylsuccinate diisobutyl succinate, 2,3-dineopentylsuccinate diisobutyl succinate, 2,3-diisopentylsuccinate diisobutyl succinate, 2,3-di(1-trifluoromethylethyl)succinate diisobutyl succinate, 2,3-di(tetradecyl)succinate diisobutyl succinate, 2,3-difluorenylsuccinate diisobutyl succinate, 2-isopropyl-3-isobutylsuccinate diisobutyl succinate, 2-tert-butyl-3-isopropylsuccinate diisobutyl succinate, 2-isopropyl-3-cyclohexylsuccinate diisobutyl succinate, 2-isopentyl-3-cyclohexylmethylsuccinate diisobutyl succinate Isobutyl ester, diisobutyl 2-cyclohexyl-3-cyclopentylsuccinate, dinepentyl 2,3-di(trimethylsilyl)succinate, dinepentyl 2-sec-butyl-3-methylsuccinate, dinepentyl 2-(3,3,3-trifluoropropyl)-3-methylsuccinate, dinepentyl 2,3-di(2-ethylbutyl)succinate, dinepentyl 2,3-dibenzylsuccinate, dinepentyl 2,3-diisopropylsuccinate, dinepentyl 2,3-di(cyclohexylmethyl)succinate, dinepentyl 2,3-di-tert-butylsuccinate, dinepentyl 2,3-diisobutylsuccinate, dinepentyl 2,3-dinepentylsuccinate, dinepentyl 2,3-diisopentylsuccinate, dinepentyl 2,3-(1-trifluoromethylethyl)succinate, 2,Dipentyl 3-bis(tetradecyl)succinate, dipentyl 2,3-difluorenylsuccinate, dipentyl 2-isopropyl-3-isobutylsuccinate, dipentyl 2-tert-butyl-3-isopropylsuccinate, dipentyl 2-isopropyl-3-cyclohexylsuccinate, dipentyl 2-isopentyl-3-cyclohexylsuccinate, dipentyl 2-tetradecyl-3-cyclohexylmethylsuccinate, and dipentyl 2-cyclohexyl-3-cyclopentylsuccinate, or a combination of two or more of these.

23. The olefin polymerization catalyst component according to claim 15, characterized in that, In formula V, R 20 -R 23 Two or four of them are connected to form a loop.

24. The olefin polymerization catalyst component according to claim 15, characterized in that, The succinate compounds include one or more of the following: 1-(ethoxycarbonyl)-1-(ethoxyacetyl)-2,6-dimethylcyclohexane, 1-(ethoxycarbonyl)-1-(ethoxyacetyl)-2,5-dimethylcyclopentane, 1-(ethoxycarbonyl)-1-(ethoxyacetylmethyl)-2-methylcyclohexane, and 1-(ethoxycarbonyl)-1-(ethoxyacetylcyclohexyl)cyclohexane.

25. The olefin polymerization catalyst component according to claim 15, characterized in that, The succinate compounds include diethyl perhydrogenated succinate, diethyl trimethylsuccinate, diethyl cyclohexylmethylsuccinate, phenylsuccinate (1-ethoxycarbo diisobutyl phenylsuccinate), diisobutyl perhydrogenated succinate, diisobutyl cyclohexylmethylsuccinate, dipentyl perhydrogenated succinate, dipentyl p-methoxyphenylsuccinate, dipentyl cyclohexylmethylsuccinate, 2,3-diethyl-2-isopropylsuccinate, diethyl 2,3-diisopropyl-2-methylsuccinate, diethyl 2,3-dicyclohexyl-2-methylsuccinate, 2, Diethyl 2,3,3-tetramethylsuccinate, diethyl 2,2,3,3-tetraethylsuccinate, diethyl 2,2,3,3-tetrapropylsuccinate, diethyl 2,3-diethyl-2,3-diisopropylsuccinate, diethyl 2,2,3,3-tetrafluorosuccinate, diisobutyl 2,3-diethyl-2-isopropylsuccinate, diisobutyl 2,3-diisopropyl-2-methylsuccinate, 2,3-dicyclohexyl 2-Methylsuccinate diisobutyl ester, 2,2,3,3-tetramethylsuccinate diisobutyl ester, 2,2,3,3-tetraethylsuccinate diisobutyl ester, 2,2,3,3-tetrapropylsuccinate diisobutyl ester, 2,3-diethyl-2,3-dipropylsuccinate diisobutyl ester, 2,2,3,3-tetrafluorosuccinate diisobutyl ester, 2,3-diethyl-2-isopropylsuccinate dinepentyl ester, 2,3-diisopropyl-2- Dipentyl methylsuccinate, 2,3-dicyclohexyl-2-methylsuccinate, 2,2,3,3-tetramethylsuccinate, 2,2,3,3-tetraethylsuccinate, 2,2,3,3-tetrapropylsuccinate, 2,3-diethyl-2,3-diisopropylsuccinate, and 2,2,3,3-tetrafluorosuccinate, or a combination of two or more of these.

26. The olefin polymerization catalyst component according to claim 1, characterized in that, The Lewis base compound includes an ortho-phenylene diester compound; wherein the ortho-phenylene diester compound has the structure shown in Formula VI: In equation VI, R 27 and R 28 Whether the two are the same or different, they are each independently selected from C1-C. 20 Straight-chain or branched alkyl groups and their derivatives, C3-C 20 cycloalkyl, C6-C 20 aryl groups and their derivatives, C7-C 20 Araneyl groups and their derivatives, C2-C 10 olefin group, C 10 -C 20 Fused ring aryl, C 10 -C 20 ester group, R 27 and R 28 Not hydrogen; R 23 -R 26 Whether the two are the same or different, they are each independently selected from hydrogen, C1-C 20 hydrocarbon groups and their derivatives, including C1-C 20 Alkoxy groups, groups containing heteroatoms, groups containing C1-C 20 The group consisting of alkoxy groups and heteroatoms; more preferably, the heteroatoms include one or more combinations of N, O, S, P, Si, and halogens.

27. The olefin polymerization catalyst component according to claim 26, characterized in that, The Lewis base compounds include ortho-phenylene diesters having the structure shown in Formula VII: In equation VII, R 29 -R 42 Whether the two are the same or different, they are each independently selected from hydrogen, C1-C 20 hydrocarbon groups and their derivatives, including C1-C 20 Alkoxy groups, groups containing heteroatoms, groups containing C1-C 20 Alkyl groups and heteroatom groups; preferably, in formula VII, R 29 -R 32 At least one of them is selected from C1-C 20 hydrocarbon groups and their derivatives; preferably, in formula VII, R 33 -R 42 At least one of them is selected from C1-C 20 hydrocarbon groups and their derivatives, including C1-C 20 Alkoxy groups, groups containing heteroatoms, groups containing C1-C 20 Alkyl groups and heteroatom groups.

28. The olefin polymerization catalyst component according to claim 26, characterized in that, The ortho-phenylene diesters are selected from 1,2-benzenediol-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Cephedrol-3-methyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-3-methoxy-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-3-ethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-3-propyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-3-isobutyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-3-n-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-3-ethoxy-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-4-methyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-4-ethyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-4-propyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-4-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-4-isopentyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-4-formyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-4-acetyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-4-hydroxy-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Cephedrol-4-chloro-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-4-bromo-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Cephedrol-3,4-dimethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Cephedrol-3,4-dimethoxy-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Cephedrol-3,4-dichloro-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-3-methyl-5-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-3,5-di-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Cephedrol-3,5-diisopropyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Cephedrol-3,5-dimethoxy-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Cephedrol-3,6-dimethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-3,6-di-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Cephedrol-3,6-dimethyl-4-isopropyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-3-isopropyl-4,5-dimethyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-4-ethyl-5-isobutyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-4-ethyl-5-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-3-methoxy-5-methyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-3,4,6-trimethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; One or more of the following: 1,2-benzenediol-3,4,6-triisopropyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; The ortho-phenylene diester internal electron donor is more preferably from: 1,2-Ceramide-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Cephedrol-3-methyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-3-n-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-4-methyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-4-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Ceramide-3-methyl-5-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; 1,2-Cephedrol-3,6-dimethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester]; 1,2-Ceramide-3,6-di-tert-butyl-1,2-di[benzoate, 2-methylbenzoate, 2-isopropylbenzoate, 4-methylbenzoate, 4-n-propylbenzoate, 4-isopropylbenzoate, 4-n-butylbenzoate, 4-tert-butylbenzoate, 4-isobutylbenzoate, 4-aminobenzoate, 4-fluorobenzoate, 2-chlorobenzoate, 3-chlorobenzoate, 4-chlorobenzoate, 2,4,6-trimethylbenzoate, 3-methoxybenzoate, 4-methoxybenzoate]; One or more combinations of 1,2-benzenediol-3,4,6-trimethyl-1,2-di[benzoic acid ester, 2-methylbenzoic acid ester, 2-isopropylbenzoic acid ester, 4-methylbenzoic acid ester, 4-n-propylbenzoic acid ester, 4-isopropylbenzoic acid ester, 4-n-butylbenzoic acid ester, 4-tert-butylbenzoic acid ester, 4-isobutylbenzoic acid ester, 4-aminobenzoic acid ester, 4-fluorobenzoic acid ester, 2-chlorobenzoic acid ester, 3-chlorobenzoic acid ester, 4-chlorobenzoic acid ester, 2,4,6-trimethylbenzoic acid ester, 3-methoxybenzoic acid ester, 4-methoxybenzoic acid ester].

29. The olefin polymerization catalyst component according to claim 1, characterized in that, The molar ratio of the electron donor in the quercetin derivative to the Lewis base compound is ≥1:9; preferably ≥3:7; more preferably ≥5:5; and even more preferably ≥8:

2.

30. The olefin polymerization catalyst component according to claim 1, characterized in that, The catalyst component comprises a titanium compound, a magnesium compound, and an internal electron donor compound; the precursor of the magnesium compound is selected from X. n Mg(OR a ) 2-n MgCl2·mR a OH, R a 2-n MgX n One or more combinations of MgCl2 / SiO2, MgCl2 / Al2O3, magnesium halides, and titanium alkoxides, wherein m is 0.1-6, 0≤n≤2, X is a halogen, and R a For C1-C 20 The hydrocarbon group; the general formula of the titanium compound is TiX. N (OR b ) 4-N , where R b For C1-C 20 The hydrocarbon group, where X is a halogen and N is 1-4; Preferably, the magnesium compound is an alkoxide of magnesium dihalide; or, the magnesium compound is a liquid magnesium compound; or, the magnesium compound is a derivative in which at least one halogen atom in a magnesium dihalide molecule is replaced by an alkyl group or a haloalkyl group; preferably, it is an alkyloxy magnesium compound; more preferably, it is an alkoxy magnesium and / or an aryloxy magnesium compound. Preferably, the titanium compound includes one or a combination of two or more of titanium tetrachloride, titanium tetrabromide, titanium tetraiodide, and titanium alkoxyhalides; Preferably, the alkyl titanium halide comprises one or a combination of two or more of the following: titanium methoxytrichloride, titanium ethoxytrichloride, titanium propoxytrichloride, titanium n-butoxytrichloride, titanium dimethoxydichloride, titanium diethoxydichloride, titanium dipropoxydichloride, titanium di n-butoxydichloride, titanium trimethoxytrichloride, titanium triethoxytrichloride, titanium tripropoxytrichloride, and titanium tri n-butoxytrichloride. Preferably, the titanium compound is titanium tetrachloride.

31. The olefin polymerization catalyst component according to claim 1, characterized in that, The molar ratio of the internal electron donor compound to the magnesium compound (calculated as magnesium) is 0.01-5.0, preferably 0.05-3.

0.

32. A catalyst for olefin polymerization, characterized in that, It includes the catalyst component and organoaluminum compound as described in any one of claims 1-31.

33. The catalyst according to claim 32, characterized in that, The general formula of the organoaluminum compound is AlR c p X (3-p) , where R c It is hydrogen or C1-C 20 The hydrocarbon group, where X is a halogen and p is an integer 0 ≤ p ≤ 3; Preferably, the organoaluminum compound includes one or more of the following: trialkylaluminum compounds, alkylaluminum halides, alkylaluminum hydrides, alkylaluminum sesquichlorides, and alkylaluminoxanes. Preferably, the trialkylaluminum compound includes one or more of trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-butylaluminum, tri-n-hexylaluminum, and trioctylaluminum; the alkylaluminum halide includes AlEt2Cl; the alkylaluminum sesquichloride includes Al2Et3Cl3; more preferably, the organoaluminum compound is a mixture of AlEt2Cl and Al2Et3Cl3.

34. The catalyst according to claim 32, characterized in that, The molar ratio of the organoaluminum compound to the titanium atoms in the catalyst component is 1-1000:1, preferably 50-800.

35. The catalyst according to claim 32, characterized in that, The catalyst also includes an external electron donor; Preferably, the external electron donor is a siloxane compound; Preferably, the general formula of the siloxane compound is R' t Si(OR”) 4-t In this context, R' and R” are each independently selected from C1-C 18 The hydrocarbon group, where t is an integer 0 ≤ t ≤ 3; Preferably, R' and R” each contain heteroatoms; Preferably, the heteroatoms include one or more combinations of N, O, S, P, and Si; Preferably, the siloxane compound includes trimethylmethoxysilane, trimethylethoxysilane, tri-n-propylmethoxysilane, tri-n-propylethoxysilane, tri-n-butylmethoxysilane, triisobutylethoxysilane, tricyclohexylmethoxysilane, tricyclohexylethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, di-n-propyldimethoxysilane, diisopropyldimethoxysilane, di-n-propyldiethoxysilane, diisopropyldiethoxysilane, di-n-butyldiethoxysilane, diisobutyldiethoxysilane, di-tert-butyldimethoxysilane, di-tert-butyldimethoxysilane, di-n-butyldimethoxysilane, diisobutyldimethoxysilane, di-tert-butyldiethoxysilane, di-n-butyldiethoxysilane. Alkane, n-Butylmethyldimethoxysilane, Di(2-ethylhexyl)dimethoxysilane, Di(2-ethylhexyl)diethoxysilane, Dicyclohexyldimethoxysilane, Dicyclohexyldiethoxysilane, Dicyclopentyldimethoxysilane, Dicyclopentyldiethoxysilane, Cyclohexylmethyldimethoxysilane, Cyclohexylmethyldiethoxysilane, Cyclohexylethyldimethoxysilane, Cyclohexylisopropyldimethoxysilane, Cyclohexylethyldiethoxysilane, Cyclopentylmethyldimethoxysilane, Cyclopentylmethyldiethoxysilane, Cyclopentylethyldimethoxysilane, Cyclopentylethyldiethoxysilane, Cyclopentylisopropyldiethoxysilane, Cyclopentylisobutyldimethoxysilane, Cyclohexyln-propyldimethoxysilane, Cyclohexyln-propyl Cyclohexyl-n-butyldiethoxysilane, pentylmethyldimethoxysilane, diphenyldimethoxysilane, pentylmethyldiethoxysilane, pentylethyldimethoxysilane, pentylethyldiethoxysilane, cyclohexyldimethylmethoxysilane, cyclohexyldiethylmethoxysilane, cyclohexyldiethylmethoxysilane, cyclohexyldiethylethoxysilane, 2-ethylhexyltrimethoxysilane, cyclohexyldimethoxysilane, cyclohexyldiethoxysilane, 2-ethylhexyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, isopropyltrimethoxysilane, isopropyltriethoxysilane, n-butyltrimethoxysilane, isobutyltrimethoxysilane Cyclohexyltrimethoxysilane, tert-butyltrimethoxysilane, n-butyltriethoxysilane, cyclohexyltrimethoxysilane, cyclohexyltriethoxysilane, cyclopentyltrimethoxysilane, cyclopentyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, 2-ethylhexyltrimethoxysilane, 2-ethylhexyltriethoxysilane, pentyltrimethoxysilane, pentyltriethoxysilane, phenyltriethoxysilane, tetramethoxysilane, tetraethoxysilane, cyclohexylcyclopentyldimethoxysilane, cyclohexylcyclopentyldiethoxysilane, cyclohexylcyclopentyldipropoxysilane, 3-methylcyclohexylcyclopentyldimethoxysilane, 4-methylcyclohexylcyclopentyldimethoxysilane, 3,5-dimethylcyclopentyldimethoxysilane, 3,The following are included in the list of one or more of the following: 5-dimethylcyclohexylcyclopentyldimethoxysilane, 3-methylcyclohexylcyclohexyldimethoxysilane, di(3-methylcyclohexyl)dimethoxysilane, 4-methylcyclohexylcyclohexyldimethoxysilane, di(4-methylcyclohexyl)dimethoxysilane, 3,5-dimethylcyclohexylcyclohexyldimethoxysilane, di(3,5-dimethylcyclohexyl)dimethoxysilane, tetrapropoxysilane, tetrabutoxysilane, methyl tert-butyldimethoxysilane, 2-ethylpiperidinyl-2-tert-butyldimethoxysilane, (1,1,1-trifluoro-2-propyl)-2-ethylpiperidinyldimethoxysilane, and (1,1,1-trifluoro-2-propyl)-methylmethoxysilane.

36. The catalyst according to claim 35, characterized in that, The siloxane compounds include one or more combinations of di-n-propyl dimethoxysilane, diisopropyl dimethoxysilane, di-n-butyl dimethoxysilane, diisobutyl dimethoxysilane, di-tert-butyl dimethoxysilane, di-n-butyl diethoxysilane, tert-butyl trimethoxysilane, dicyclohexyl dimethoxysilane, dicyclohexyl diethoxysilane, cyclohexylmethyl dimethoxysilane, cyclohexylethyl diethoxysilane, cyclohexylethyl dimethoxysilane, cyclohexylethyl diethoxysilane, cyclopentylmethyl dimethoxysilane, cyclopentylmethyl diethoxysilane, cyclopentylethyl dimethoxysilane, cyclohexylcyclopentyl dimethoxysilane, cyclohexylcyclopentyl diethoxysilane, 3-methylcyclohexylcyclopentyl dimethoxysilane, 4-methylcyclohexylcyclopentyl dimethoxysilane, and 3,5-dimethylcyclopentyl dimethoxysilane.

37. The catalyst according to claim 35, characterized in that, The siloxane compounds include one or more of the following: cyclohexylmethyldimethoxysilane, diisopropyldimethoxysilane, di-n-butyldimethoxysilane, diisobutyldimethoxysilane, diphenyldimethoxysilane, phenyltriethoxysilane, methyl tert-butyldimethoxysilane, dicyclopentyldimethoxysilane, 2-ethylpiperidinyl-2-tert-butyldimethoxysilane, (1,1,1-trifluoro-2-propyl)-2-ethylpiperidinyldimethoxysilane, (1,1,1-trifluoro-2-propyl)-methyldimethoxysilane, cyclohexyltrimethoxysilane, tert-butyltrimethoxysilane, and tert-hexyltrimethoxysilane.

38. The catalyst according to claim 35, characterized in that, The molar ratio of silicon in the external electron donor to titanium in the catalyst component is 0.002-100, preferably 0.01-20, and more preferably 0.01-5.

39. The catalyst according to claim 35, characterized in that, The catalyst also includes an activity modifier; Preferably, the activity modifier is a piperitate ester represented by formula VIII: In equation VIII, R 43 Selected from C1-C 20 Straight-chain or branched alkyl groups and their derivatives, C3-C 20 cycloalkyl, C6-C 20 aryl groups and their derivatives, C7-C 20 Araneyl groups and their derivatives, C2-C 10 olefin group, C 10 -C 20 Fused ring aryl, C 10 -C 20 The ester group; preferably, R 43 It also contains heteroatoms, which include one or more combinations of N, O, S, P, and Si; Preferably, in formula VIII, R 43 Selected from methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, cyclopentyl, n-hexyl, cyclohexyl, heptyl, octyl, nonyl, decyl, C 11 -C 20 Straight-chain or branched alkyl groups, and the following substituents with 20 or fewer carbon atoms: alkenyl, phenyl, m-chlorophenyl, p-chlorophenyl, o-chlorophenyl, m-methoxyphenyl, p-methoxyphenyl, o-methoxyphenyl, p-methylphenyl, p-nitrophenyl, m-nitrophenyl, benzyl and its derivatives, phenethyl and its derivatives, furanyl, pyrroleyl, thiophenyl, indene; Preferably, the piperate ester includes one or more of the following: methyl piperate, ethyl piperate, n-propyl piperate, isopropyl piperate, n-butyl piperate, isobutyl piperate, n-pentyl piperate, isopentyl piperate, n-octyl piperate, isooctyl piperate, cyclohexyl piperate, and phenyl piperate.

40. The catalyst according to claim 39, characterized in that, The molar ratio of the active regulator to the external electron donor is (0.02-50):1, preferably (0.1-10):

1.

41. The use of the catalyst according to any one of claims 32-40 in olefin polymerization.

42. The application according to claim 41, characterized in that, The olefins include straight-chain or branched olefins, preferably one or more combinations of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 3-methyl-1-butene, 4-methyl-1-pentene, butadiene, vinylcyclopentene, and vinylcyclohexene.

43. The application according to claim 41, characterized in that, The polymerization includes the polymerization of ethylene and / or propylene.

44. The application according to claim 41, characterized in that, The polymerization includes homopolymerization or copolymerization.

45. The application according to claim 41, characterized in that, During the catalytic process, the order in which the components of the catalyst are added is arbitrary; Preferably, the organoaluminum compound is added to the polymerization system first, followed by the external electron donor and the activity modifier, and finally the catalyst component.

46. ​​The application according to claim 41, characterized in that, The polymerization is carried out with or without a solvent; the olefin is in the gas phase or liquid phase; preferably, hydrogen is added or not added as a molecular weight regulator; the polymerization is a continuous polymerization or a batch polymerization, and the polymerization is carried out in one step, two steps or more steps.

47. The application according to claim 41, characterized in that, The polymerization temperature is ≤200℃, preferably 20-100℃, and more preferably 40-80℃; the polymerization pressure is ≤10MPa, preferably 0.3-5MPa.

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