Catalyst component for olefin polymerization and its preparation method and catalyst and application for olefin polymerization
A technology of olefin polymerization and catalyst, which is applied to the catalyst of olefin polymerization, and the application field of catalyst in olefin polymerization reaction, which can solve the problems of inert dispersion medium increasing the cost of solvent recovery, reducing the yield of carrier in one pot, etc., and achieves good particle shape, The effect of increasing single-pot yield and reducing recycling cost
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preparation example Construction
[0081] The present invention also provides the above-mentioned preparation method for the catalyst component of olefin polymerization, and this method comprises the following steps:
[0082] (1) Preparation of solid components, the process including:
[0083](a) In a closed container, in the presence of at least one polymer dispersion stabilizer, magnesium halide MgX 2 and organic alcohol R I The mixture of OH reacts at 30-160°C to form a magnesium halide alcoholate solution;
[0084] (b) reacting the magnesium halide alcoholate solution with the alkylene oxide compound represented by formula (2) at 30-160°C to generate a solid component;
[0085] Among them, X is a halogen, R I for C 1 -C 12 straight-chain or branched-chain alkyl;
[0086]
[0087] Among them, R II and R III same or different, each independently hydrogen or C 1 -C 5 A linear or branched alkyl group, wherein the hydrogen on the alkyl group is optionally substituted by halogen;
[0088] Wherein, i...
preparation example 1-17
[0129] In a 500mL airtight reactor, sequentially add magnesium chloride, organic alcohol (R 1 OH) and polymer dispersion stabilizer, heated up to the reaction temperature (T) under stirring, after constant temperature reaction for 1 hour, added alkylene oxide compound (E), maintained the temperature for 0.5 hour reaction, filtered off the liquid, and washed with hexane 5 times, vacuum drying to obtain solid component particles, the specific preparation conditions are shown in Table 1, so as to prepare spherical solid components A1-A17 respectively, wherein the average particle diameter (D50) and particle diameter of these solid components are The distribution value (SPAN) is shown in Table 1, the solid component A1 1 H-NMR spectrum as figure 1 Shown, the solid component A2's 1 H-NMR spectrum as figure 2 Shown, the solid component A13's 1 H-NMR spectrum as image 3 Shown, the solid component A15's 1 H-NMR spectrum as Figure 4 As shown, the optical microscope photo of s...
Embodiment 1
[0162] This example is used to illustrate the catalyst component for olefin polymerization and its preparation method, catalyst for olefin polymerization and application of the present invention.
[0163] (1) Preparation of catalyst components
[0164] Into a 300mL glass reaction bottle, add 100ml of titanium tetrachloride successively, cool to -20°C, add 8g of the solid component A1 prepared in Preparation Example 1 above, and heat up to 110°C. Add 4.4mmol of 2,4-pentanediol dibenzoate and 5.2mmol of 2-isopropyl-2-isopentyl-1,3-dimethoxypropane simultaneously during the heating process, and continue to heat up to 110°C and constant temperature at 110°C for 0.5 hours, remove the liquid by suction filtration, wash twice with titanium tetrachloride, wash three times with hexane, and dry in vacuum to obtain the solid catalyst component Cat-1.
[0165] (2) Propylene liquid phase bulk polymerization
[0166] The liquid-phase bulk polymerization of propylene was carried out in a 5L ...
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