Catalyst components for olefin polymerization

Abstract

A solid catalyst component for olefin polymerization, comprising Mg, Ti, and an electron donor of formula (I): 【Chemical 1】 JPEG2026513612000006.jpg3837 (I) In the formula, R 1 and R 5 groups are either equal to or different from each other and are selected from C1-C 15 hydrocarbon groups, R 2 group is selected from C2-C 10 hydrocarbon groups, R 3 is hydrogen or a C1-C 20 hydrocarbon group, and R 4 is selected from C7-C 20 halogen-substituted aryl groups. The catalyst system based on the solid catalyst component has high activity and stereospecificity.

Description

Technical Field

[0001] The present disclosure relates to a catalyst component for the polymerization of olefins, particularly propylene, which comprises a Mg dihalide-based carrier on which Ti atoms are supported and an electron donor compound containing ester and carbamate functional groups. The present disclosure further relates to a catalyst obtained from the above components and their use in the polymerization process of olefins, particularly propylene.

Background Art

[0002] Catalyst components for the stereospecific polymerization of olefins are disclosed in the art. Regarding the polymerization of propylene, generally, a Ziegler-Natta catalyst containing a solid catalyst component composed of magnesium dihalide supported with a titanium compound and an internal electron donor compound is used in combination with an alkylaluminum compound. However, conventionally, when a higher crystallinity of the polymer is desired, an external donor (e.g., alkoxysilane) is also required to obtain higher isotacticity. Phthalic acid esters, particularly diisobutyl phthalate, are used as internal donors in catalyst preparation. Phthalic acid esters are used as internal donors in combination with an alkylalkoxysilane as an external donor. This catalyst system exhibits excellent performance in terms of activity, isotacticity, and xylene insolubility.

[0003] In some cases, it is desirable to produce a polymer using a catalyst system that does not use a phthalic acid ester as an electron donor.

[0004] As a result, research activities have been devoted to finding alternative classes of internal donors in the preparation of catalyst components for propylene polymerization.

[0005] Some of the tested catalysts contain a donor structure having both a carbamine group and an ester group at the same time. PCT Publication No. WO2021 / 001232 describes 1,2-amino ester derivatives containing one carbamate group and one ester functional group. The catalysts generated by these structures generally have acceptable properties, but it is desirable to improve them. Summary of the Invention

[0006] Surprisingly, the applicant has discovered that among specific structures derived from amino acids, there is a class of donors containing both a carbamate functional group and an ester functional group, which produce catalysts that simultaneously exhibit high activity and stereospecificity.

[0007] Therefore, an object of the present disclosure is a catalyst component for olefin polymerization containing Mg, Ti, and an electron donor of formula (I),

Chemical formula

[0008] According to the present application, the term "hydrocarbon group" includes, in each of the groups of R 1 to R 5 defined above, that heteroatoms selected from halogen, P, S, N, O, and Si may also be present optionally in addition to carbon and hydrogen.

[0009] In accordance with this application, the term "alkyl group" also includes arylalkyl groups, which have the same range of carbon atoms as those derived from alkyl groups, by substituting hydrogen atoms with aryl groups, even if not specifically stated otherwise.

[0010] Preferably, R 1 is C1-C 10 The alkyl group is an alkyl group or an aryl alkyl group, and more preferably a C1-C8 alkyl group. More preferably, the alkyl group is a primary alkyl group.

[0011] Preferably, R 2 C3-C 10 Primary alkyl, or primary C7-C 10 Selected from arylalkyl groups.

[0012] Preferably, R 3 is hydrogen or C1-C 15 It may be an alkyl group, more preferably R 3 It is selected from hydrogen.

[0013] R 4 Preferably, halogen-substituted C7-C 20 Arylalkyl groups, especially primary C7-C 20 Selected from arylalkyl groups. In a preferred embodiment, R 4 is halogen-substituted C7-C 15Selected from arylalkyl groups. Preferred arylalkyl groups are 4-chlorobenzyl, 3-chlorobenzyl, 2-chlorobenzyl, 3,4-dichlorobenzyl, 4-fluorobenzyl, 3-fluorobenzyl, 2-fluorobenzyl, 3,4-difluorobenzyl, 4-bromobenzyl, 3-bromobenzyl, 3,4-dibromobenzyl, 4-iodobenzyl, 2-iodobenzyl, 3-iodobenzyl, 3,4-iodobenzyl, 1-(4-chlorophenyl)ethyl, 1-(3-chlorophenyl)ethyl, 1-(3,4 These include (-dichlorophenyl)ethyl, 1-(4-chlorophenyl)propyl, 1-(3-chlorophenyl)propyl, 1-(3,4-dichlorophenyl)propyl, 1-(4-chlorophenyl)butyl, 1-(3-chlorophenyl)butyl, 1-(3,4-dichlorophenyl)butyl, (4-chloronaphthalen-1-yl)methyl, (6-chloronaphthalen-1-yl)methyl, and (1-(3,4-difluorophenyl)-2-methylpropyl, among which the halosubstituted benzyl structure is most preferred.

[0014] The halogen substituent is preferably located on the aromatic ring of the arylalkyl group. In particular, the aromatic ring may be substituted with one or more halogen atoms.

[0015] In preferred embodiments, each of the isolated aromatic rings or the condensed aromatic rings is substituted with one or two halogens.

[0016] With respect to the phenyl ring, any position can be substituted. Preferred positions are meta and / or para, with the latter being particularly preferred.

[0017] The preferred halogens are Br, Cl, and F, with Cl being the most preferred.

[0018] In addition to halogen substitution, the aromatic moiety of the arylalkyl group is C1-C 10 Alkyl alkyl groups, more preferably C1-C8 alkyl groups, may also be substituted.

[0019] Preferably, R 5is C1-C 10 The alkyl group is an alkyl group, more preferably a C1-C8 alkyl group. More preferably, the alkyl group is a primary alkyl group.

[0020] The preferred structure of formula (I) is R 1 and R 5 C1-C 10 It is an alkyl group, R 2 is C2-C 10 Alkyl or C7-C 10 It is an arylalkyl group, R 3 is hydrogen, R 4 This is a halogen-substituted benzyl group.

[0021] Preferably, the final content of the electron donor compound in the solid catalyst component is in the range of 1 to 25% by weight, and more preferably in the range of 3 to 20% by weight.

[0022] Examples of non-restrictive structures of equation (I) include the following: 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(methyl)amino)propanoate ethyl, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(propyl)amino)propanoate ethyl, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(ethyl)amino)propanoate ethyl, 3-(3,4-dichlorophenyl)-2-((ethoxycarbonyl)(isopentyl)amino)propanoate ethyl, 3-(3-chlorophenyl)-2-((ethoxycarbonyl)(propyl)amino)propanoate ethyl, 3-(2- Ethyl chlorophenyl)-2-((ethoxycarbonyl)(propyl)amino)propanoate, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(isobutyl)amino)propanoate, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(isopentyl)amino)propanoate, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(hexyl)amino)propanoate, 3-(3,4-dichlorophenyl)-2-((ethoxycarbonyl)(isobutyl)amino)propanoate, 3-(3,4- Ethyl dichlorophenyl)-2-((ethoxycarbonyl)(hexyl)amino)propanoate, ethyl 2-((ethoxycarbonyl)(hexyl)amino)-3-(4-fluorophenyl)propanoate, ethyl 3-(3,4-difluorophenyl)-2-((ethoxycarbonyl)(isopentyl)amino)propanoate, ethyl 3-(3,4-difluorophenyl)-2-((ethoxycarbonyl)(isobutyl)amino)propanoate, ethyl 3-(3,4-difluorophenyl)-2-((ethoxycarbonyl)(hexyl)amino)propanoate Ethyl, 3-(3-bromophenyl)-2-((ethoxycarbonyl)(isopentyl)amino)propanoate ethyl, 3-(3-bromophenyl)-2-((ethoxycarbonyl)(hexyl)amino)propanoate ethyl, 3-(4-bromophenyl)-2-((ethoxycarbonyl)(hexyl)amino)propanoate ethyl, 2-((ethoxycarbonyl)(hexyl)amino)-3-(3-fluorophenyl)propanoate ethyl, 2-((ethoxycarbonyl)(isobutyl)amino)-3-(4-fluorophenyl)propanoate ethyl,2-((ethoxycarbonyl)(isopentyl)amino)-3-(4-fluorophenyl)propanoate ethyl, 2-((ethoxycarbonyl)(isopentyl)amino)-3-(3-fluorophenyl)propanoate ethyl, 2-((ethoxycarbonyl)(isobutyl)amino)-3-(3-fluorophenyl)propanoate ethyl, 2-((ethoxycarbonyl)(isobutyl)amino)-3-(4-iodophenyl)propanoate ethyl, 3-(3-bromophenyl)-2-((ethoxycarbonyl)(isobutyl)amino)propane Ethyl acid, 3-(4-bromophenyl)-2-((ethoxycarbonyl)(isobutyl)amino)propanoate ethyl, 3-(4-bromophenyl)-2-((ethoxycarbonyl)(isopentyl)amino)propanoate ethyl, 2-((ethoxycarbonyl)(hexyl)amino)-3-(4-iodophenyl)propanoate ethyl, 2-((ethoxycarbonyl)(isopentyl)amino)-3-(4-iodophenyl)propanoate ethyl, 3-(4-chlorophenyl)-2-(ethyl(isobutoxycarbonyl)amino)propanoate Ethyl, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(propyl)amino)propanoate ethyl, 3-(3-chlorophenyl)-2-((ethoxycarbonyl)(propyl)amino)propanoate ethyl, 3-(2-chlorophenyl)-2-((ethoxycarbonyl)(propyl)amino)propanoate ethyl, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(isobutyl)amino)propanoate ethyl, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(isopentyl)amino)propanoate ethyl 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(hexyl)amino)propanoate ethyl, 2-((butoxycarbonyl)(isobutyl)amino)-3-(4-chlorophenyl)propanoate butyl, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(methyl)amino)propanoate isobutyl, 2-((butoxycarbonyl)(propyl)amino)-3-(4-chlorophenyl)propanoate ethyl, 3-(4-chlorophenyl)-2-(ethyl(isobutoxycarbonyl)amino)propanoate isobutyl,3-(3-chlorophenyl)-2-((ethoxycarbonyl)(propyl)amino)butyl propanoate, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(hexyl)amino)-4-methylpentanoate ethyl, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(isopentyl)amino)pentanoate ethyl, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(isobutyl)amino)butanoate ethyl, 3,3-bis(4 -chlorophenyl)-2-((ethoxycarbonyl)(isopentyl)amino)propanoate ethyl, 3-(4-chlorophenyl)-2-((ethoxycarbonyl)(hexyl)amino)-4-methylpentanoate ethyl, 3-(3-chlorophenyl)-2-((ethoxycarbonyl)(propyl)amino)-2-methylpropanoate ethyl, 2-(4-chlorobenzyl)-2-((ethoxycarbonyl)(isopentyl)amino)butanoate ethyl, 2-(4-chlorobenzyl)-2-((ethoxycarbonyl)(hexyl)amino)-3-methylbutanoate ethyl.

[0023] Compounds corresponding to formula (I) can be prepared using the following synthetic route.

[0024] [ka] In the solid catalyst component of this disclosure, the amount of Ti atoms is preferably greater than 2% by weight, and more preferably greater than 2.5% by weight, relative to the total weight of the catalyst component.

[0025] As described above, the catalyst components of this disclosure include Ti, Mg, and halogens in addition to the electron donor described above. In particular, the catalyst component comprises a titanium compound containing at least one Ti-halogen bond and an electron donor compound supported on the Mg halide described above. The magnesium halide is preferably the active form MgCl2 described as a support for Ziegler-Natta catalysts. U.S. Patents 4,298,718 and 4,495,338 first described the use of these compounds in Ziegler-Natta catalysts. From these patents, it is known that the active form of magnesium dihalide used as a support or co-support in catalyst components for olefin polymerization is characterized by its X-ray spectrum. In this X-ray spectrum, the intensity of inactive halides decreases, and the maximum intensity is replaced by a halo that shifts to a lower angle compared to the intensity of a stronger line.

[0026] Preferred titanium compounds used in the catalyst components of this disclosure are TiCl4 and TiCl3, and furthermore, the formula Ti(OR 6 ) m-y X y Haloaloolates can also be used, where m is the valence of titanium, y is the number from 1 to m-1, X is the halogen, R 6 It is a hydrocarbon group having 1 to 10 carbon atoms.

[0027] The solid catalyst components can be prepared according to several methods. One method involves reacting a magnesium alcoholate or chloro alcoholate (in particular, a chloro alcoholate prepared according to U.S. Patent No. 4,220,554) with an excess of TiCl4 at a temperature of about 80–120°C in the presence of an electron donor compound.

[0028] According to a preferred method, the solid catalyst component is given by formula Ti(OR 7 ) m-y X y A titanium compound of the formula (wherein m is the valence of titanium and y is the number from 1 to m), preferably TiCl4, is given by the formula MgCl2·pR 8OH(wherein p is a number from 0.1 to 6, preferably from 2 to 3.5, R 8 Ti compounds can be prepared by reacting magnesium chloride with an adduct of a hydrocarbon radical having 1 to 18 carbon atoms. The adduct can be appropriately prepared into a spherical shape by mixing the alcohol and magnesium chloride in the presence of an inert hydrocarbon that is immiscible with the adduct and operating under stirring conditions at the melting point of the adduct (100 to 130°C). The emulsion is then rapidly quenched, thereby solidifying the adduct in the form of spherical particles. Examples of spherical adducts prepared according to this procedure are described in U.S. Patents 4,399,054 and 4,469,648. The adduct thus obtained can be reacted directly with a Ti compound or subjected to pre-heat-controlled de-alcoholization (80 to 130°C) to obtain an adduct with less than 3 moles of alcohol, preferably 0.1 to 2.5. The reaction with a Ti compound can be carried out by suspending the adduct (de-alcoholized or in its as-is) in low-temperature TiCl4 (about 0°C), heating the mixture to 80 to 130°C, and maintaining this temperature for 0.5 to 2 hours. Treatment with TiCl4 can be carried out one or more times. The electron donor compound is preferably added during the treatment with TiCl4. Preparation of the spherical catalyst component is described, for example, in European Patent Applications EP-A-395083, EP-A-553805, EP-A-553806, EPA601525, and WO98 / 44009.

[0029] The solid catalyst components obtained according to the above method have a surface area of ​​20-500 m² as determined by the BTE method. 2 / g, preferably 50-400m 2 / g, and total porosity by BTE method is 0.2 cm 3 Larger than / g, preferably 0.2-0.6cm 3 It can be / g. The porosity (Hg method) due to pores up to a radius of 10,000 Å is generally 0.3 to 1.5 cm. 3 / g, preferably 0.45-1cm 3 It could be in the range of / g.

[0030] The average particle size of the catalyst component is 5 to 120 μm, and more preferably 10 to 100 μm.

[0031] In any of these preparation methods, the desired electron donor compound can be added in this manner, or, as an alternative, can be generated in situ using a suitable precursor, in which case the precursor can be converted to the desired electron donor compound, for example, by an available chemical reaction.

[0032] Regardless of the preparation method used, the final amount of the electron-donating compound of formula (I) is such that its molar ratio to Ti atoms is in the range of 0.01:1 to 2:1, preferably 0.05:1 to 1.5:1. The solid catalyst component according to this disclosure is converted into a catalyst for olefin polymerization by reacting it with an organoaluminum compound according to available methods.

[0033] In particular, the object of this disclosure is a polymerization catalyst for olefins CH2=CHR (wherein R is hydrogen or a hydrocarbyl radical having 1 to 12 carbon atoms), (i) The solid catalyst component disclosed above, (ii) Alkyl aluminium compounds and, optionally, (iii) A catalyst comprising a product obtained by contacting an external electron donor compound with the catalyst.

[0034] The alkyl-Al compound (ii) is preferably selected from among trialkylaluminum compounds such as triethylaluminum, triisobutylaluminum, tri-n-butylaluminum, tri-n-hexylaluminum, and tri-n-octylaluminum. Alkylaluminum halides, alkylaluminum hydrides, or alkylaluminum sesquichlorides (e.g., AlEt2Cl and Al2Et3Cl3) may also be used, and these may be used in combination with the trialkylaluminum compounds listed above.

[0035] Examples of external electron donor compounds include silicon compounds, ethers, esters, amines, and heterocyclic compounds.

[0036] Another class of preferred external donor compounds (iii) is given by formula (R 9 ) a (R 10 ) b Si(OR 11 ) c It is a silicon compound, where a and b are integers from 0 to 2, c is an integer from 1 to 4, and the sum (a+b+c) is 4. 9 , R 10 , and R 11 It is a radical having 1 to 18 carbon atoms and optionally containing heteroatoms. Particularly preferred is when a is 1, b is 1, c is 2, and R 7 and R 8 At least one of them is selected from branched alkyl, cycloalkyl, or aryl groups having 3 to 10 carbon atoms, which optionally contain a heteroatom, and R 9 C1-C 10 The silicon compound is an alkyl group, particularly a methyl group. Examples of such preferred silicon compounds include methylcyclohexyldimethoxysilane (C donor), diphenyldimethoxysilane, methyl-t-butyldimethoxysilane, dicyclopentyldimethoxysilane (D donor), diisopropyldimethoxysilane, (2-ethylpiperidinyl)t-butyldimethoxysilane, (2-ethylpiperidinyl)texyldimethoxysilane, 3,3,3-trifluoro-n-propyl)(2-ethylpiperidinyl)dimethoxysilane, methyl(3,3,3-trifluoro-n-propyl)dimethoxysilane, and N,N-diethylaminotriethoxysilane. Furthermore, a is 0, c is 3, and R 8 is a branched alkyl or cycloalkyl containing any heteroatom, and R 9 Silicon compounds in which the methyl group is also preferred. Examples of such preferred silicon compounds include cyclohexyltrimethoxysilane, t-butyltrimethoxysilane, and texyltrimethoxysilane.

[0037] The amount of electron donor compound (iii) used is such that the molar ratio of the organoaluminum compound to the electron donor compound (iii) is 0.1 to 500, preferably 1 to 300, and more preferably 3 to 100.

[0038] As explained, the catalyst components of this disclosure, in particular when used in combination with aluminum alkyl compounds and alkylalkoxysilanes for the polymerization of propylene, yielded 35 kg under the polymerization conditions described in the Experiments section. pol / g cat Larger, preferably 40 kg pol / g cat It is possible to produce polypropylene with greater polymerization activity and, at 25°C, with xylene insolubility of more than 96% by weight, preferably more than 97% by weight.

[0039] Therefore, a further object of this disclosure is a (co)polymerization process of olefin CH2=CHR (wherein R is hydrogen or a hydrocarbyl radical having 1 to 12 carbon atoms), (i) The solid catalyst component of the present disclosure and (ii) Alkyl aluminium compounds, (iii) The reaction is carried out in the presence of a catalyst containing the product of the reaction with an optional electron donor compound (external donor).

[0040] Polymerization processes can be carried out according to available techniques, such as slurry polymerization using an inert hydrocarbon solvent as a diluent, or bulk polymerization using a liquid monomer (e.g., propylene) as the reaction medium. Furthermore, it is also possible to carry out the polymerization process in the gas phase by operating in one or more fluidized bed reactors or mechanically agitated bed reactors.

[0041] Polymerization can be carried out at temperatures of 20°C to 120°C, preferably 40°C to 80°C. When polymerization is carried out in the gas phase, the operating pressure may be in the range of 0.5 to 5 MPa, preferably 1 to 4 MPa. In bulk polymerization, the operating pressure is generally in the range of 1 to 8 MPa, preferably 1.5 to 5 MPa.

[0042] The following embodiments are given for illustrative purposes only, and are not intended to limit the scope of this disclosure. Characterization Measurement of XI

[0043] 2.5 g of polymer and 250 ml of orthoxylene were placed in a round-bottom flask equipped with a condenser and reflux condenser and kept under nitrogen gas. The resulting mixture was heated to 135°C and stirred for approximately 60 minutes. The final solution was cooled to 25°C with continuous stirring, and the insoluble polymer was filtered out. The filtrate was then evaporated at 140°C under a nitrogen stream to a constant weight. The content of the xylene-soluble fraction was expressed as a percentage of the original 2.5 grams, and then expressed as 10% by the difference. Measurement of donors

[0044] The electron donor content was determined by gas chromatography. The solid components were dissolved in acidic water. The solution was extracted with ethyl acetate, an internal standard was added, and the organic phase sample was analyzed by gas chromatography to determine the amount of donors present in the starting catalyst compound. Melt flow rate (MFR)

[0045] The polymer melt flow rate (MIL) was measured according to ISO 1133 (230°C, 2.16 kg). Examples Procedure for preparing spherical adducts

[0046] The initial amount of microspherical MgCl2·2.8C2H5OH was prepared according to the method described in Example 2 of WO98 / 44009, but the operation was performed on a larger scale. General Procedure for Propylene Polymerization

[0047] A 4-liter steel autoclave equipped with a stirrer, pressure gauge, thermometer, catalyst supply system, monomer supply line, and thermostat jacket was purged with a nitrogen stream at 70°C for 1 hour. Then, 75 mL of anhydrous hexane, 0.76 g of AlEt3, dicyclopentyl dimethoxysilane as an external electron donor in an amount that resulted in an Al / donor molar ratio of 20, and 0.006 ÷ 0.010 g of solid catalyst component were sequentially added via a propylene flow at 30°C. After closing the autoclave, 2.0 NL of hydrogen was added. Then, 1.2 kg of liquid propylene was supplied with stirring. The temperature was raised to 70°C in 5 minutes, and polymerization was carried out at this temperature for 2 hours. At the end of polymerization, unreacted propylene was removed. The polymer was recovered and dried under vacuum at -70°C for 3 hours. Next, the polymer was weighed, fractionated with o-xylene, and the amount of the xylene-insoluble (XI) fraction was measured. General preparation procedure for solid catalyst components

[0048] A 500cm² tank equipped with a mechanical stirrer, cooler, and thermometer. 3 In a round-bottom flask, 250 cm 3 TiCl4 was introduced at room temperature under a nitrogen atmosphere. After cooling to 0°C, the internal donors listed in Table 1 and 10.0 g of spherical adducts were sequentially added to the flask while stirring. The amount of internal donor packed was such that the Mg / donor molar ratio was 6. The temperature was raised to 100°C and maintained for 2 hours. Then, stirring was stopped, the solid product was allowed to precipitate, and the supernatant was collected by siphon at 100°C. After removing the supernatant, fresh TiCl4 was added to restore the initial volume. Next, the mixture was heated to 120°C and maintained at this temperature for 1 hour. Stirring was stopped again, the solid was allowed to precipitate, and the supernatant was collected by siphon. The solid was sterilized six times with anhydrous hexane at a temperature gradient of 60°C (6 × 100 cm²). 3 ), and once at room temperature (100cm 3 The solid was then washed. Next, the resulting solid was dried under vacuum. The solid catalyst component thus obtained was tested in the polymerization of propylene using the procedure described above. The results are listed in Table 1. Examples 1-6 and Comparative Examples 1-2 Preparation and polymerization of solid catalyst components

[0049] The general preparation procedure for the solid catalyst components was carried out using the donors reported in Table 1 as internal donors. The solid catalyst components thus obtained were tested in the polymerization of propylene using the procedure described above. The results are listed in Table 1.

[0050] [Table 1]

Claims

1. It includes Mg, Ti, and an electron donor of formula (I), 【Chemistry 1】 (I) In the formula, R １ and R ５ groups are either equal to or different from each other, and are selected from C １ -C １５ hydrocarbon groups, the R ２ group is a C ３ -C １０ alkyl group or a C ７ -C １０ arylalkyl group, R ３ is hydrogen or a C １ -C ２０ hydrocarbon group, and R ４ is a C ７ -C ２０ halogen-substituted aryl group, a catalyst component for olefin polymerization.

2. R １ is C １ -C １０ The catalyst component according to claim 1, wherein it is an alkyl group or an arylalkyl group.

3. R ２ C ３ -C １０ Primary alkyl, or primary C ７ -C １０ The catalyst component according to claim 3, selected from arylalkyl groups.

4. R ３ is hydrogen, or C １ -C １５ A catalyst component according to claim 1, selected from alkyl groups.

5. R ３ The catalyst component according to claim 5, wherein is selected from hydrogen.

6. R ４ is a halogen-substituted first class C ７ -C ２０ A catalyst component according to any one of the prior claims, selected from arylalkyl groups.

7. R ４ is halogen-substituted C ７ -C １５ A catalyst component according to any one of the prior claims, selected from arylalkyl groups and, in particular, halogen-substituted benzyl groups.

8. R ４ The catalyst component according to any one of the prior claims, wherein the halogen substituent is located on the aromatic ring of the arylalkyl group, and the aromatic ring is substituted with one or more halogen atoms.

9. Referring to the phenyl ring, the catalyst component according to claim 9, wherein the halogen substitution is meta and / or para, with para being particularly preferred.

10. R ４ The catalyst component according to any one of the prior claims, wherein the halogen is selected from Br, Cl, and F, with Cl being the most preferred.

11. In addition to the halogen substitution, the aromatic portion of the arylalkyl group is C １ -C １０ Alkyl alkyl group, more preferably C １ -C ８ The catalyst component according to any one of the prior claims, which is also substituted with an alkyl group.

12. R ５ is C １ -C １０ The catalyst component according to claim 1, wherein it is an alkyl group.

13. (i) A solid catalyst component according to any one of the prior claims, (ii) A catalyst for olefin polymerization comprising the product of the reaction between an alkylaluminum compound and (ii).

14. The catalyst according to claim 13, further comprising an external electron donor compound.

15. Olefin CH ２ = A (co)polymerization process of CHR (wherein R is hydrogen or a hydrocarbyl radical containing 1 to 12 carbon atoms), i. A solid catalyst component according to any one of the prior claims, ii. A process carried out in the presence of a catalyst containing the product of the reaction between an alkylaluminum compound and another compound.

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