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Propylene polymer with high isotactic index

A propylene polymer, polydispersity index technology, used in electron donor compounds, catalyst components for olefin polymerization, catalyst components for olefin directional polymerization, and applications of catalysts in the polymerization of olefins CH2=CHR, which can solve the problem of very high results. Poor and other problems

Inactive Publication Date: 2007-01-10
MONTELL TECH CO BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of identity index and yield, the results obtained are very poor

Method used

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  • Propylene polymer with high isotactic index
  • Propylene polymer with high isotactic index

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 23

[0055] To a mixture of 10 mL (72 mmol) of diisopropylamine in 250 mL of tetrahydrofuran (THF) was added 28.6 mL (72 mmol) of BuLi (2.5 moles in cyclohexane) at -20°C. After stirring for 20 minutes, 9.2 g (83% purity) (28.3 mmol) of diethyl 2,3-diethylsuccinate were added at -40°C, and the mixture was stirred at room temperature for 2 hours after the addition. The mixture was then cooled to -70°C and a mixture of 4.3 mL (43 mmol) 2-iodopropane and 7.4 mL (43 mmol) hexamethylphosphoramide (HMPA) was added. After the addition the cooling was removed and the mixture was stirred for 4 days. After removal of volatiles, 250 mL of ether was added. The organic layer was washed twice with 100 mL of water. The organic layer was separated and washed with MgSO 4 was dried, filtered and concentrated in vacuo to yield an orange oil. Adoption of CH on silica 2 Cl 2 Chromatography of the oil afforded 2.3 g (30%) of product in 96% purity. From gas chromatography (GC) only one isomer was ...

Embodiment 22

[0062] A stainless steel autoclave was charged with a mixture of 6.7 g (0.02 mol) of diethyl meso-2,3-diphenylsuccinate, 180 mL of isopropanol and 0.23 g of 5 wt% Rh / C catalyst. at 70°C at 2.0×10 6 The mixture was hydrogenated under a hydrogen pressure of Pa (20 bar) for 18 hours. The mixture was filtered through Celite and concentrated under reduced pressure to yield 6.8 g (97% yield) of product with a purity of 99%.

[0063] Esterification

[0064] For the literature see for example: "Vogel's Textbook of Practical Organic Chemistry", 5th Edition (1989), pp. 695-707.

[0065] Diethyl 2-phenylsuccinate (Example 1)

[0066] 50g DL-phenylsuccinic acid (0.257mol), 90mL (1.59mol) ethanol, 46mL toluene and 0.39g concentrated H 2 SO 4 The mixture was heated to 115 °C. An azeotropic mixture of ethanol, toluene and water was distilled on a 10 cm column. The same amount of ethanol and toluene were added when the distillation was stopped. To achieve complete conversion, this ste...

Embodiment 1-27 and comparative example 28-30

[0102] Preparation of solid catalyst components

[0103] In a 500 mL four-neck round flask, purged with nitrogen, add 250 mL of TiCl at 0 °C 4 . Under stirring conditions, add 10.0 g microspheres MgCl 2 *2.8C 2 h 5 OH (prepared according to the method of Example 2 in USP4399054, but operating at 3000 rpm instead of 10000 rpm) and 7.4 mmoles of succinate. The temperature was raised to 100°C and held for 120 minutes. Then, agitation was stopped, the solid product was allowed to settle, and the supernatant layer was siphoned off. Then add 250 ml of fresh TiCl 4 . The mixture was reacted at 120°C for 60 minutes, then the supernatant layer was siphoned off. The solid was washed 6 times with anhydrous hexane (6 x 100 mL) at 60°C. Finally the solid was dried under vacuum and analyzed. The type and amount (wt%) of succinate and the amount (wt%) of Ti contained in the solid catalyst component are shown in Table 1. The aggregation results are shown in Table 2. To characteriz...

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Abstract

The present invention relates to a solid catalyst component for the polymerization of olefins CH2=CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from substituted succinates of a particular formula. Said catalyst components when used in the polymerization of olefins, and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.

Description

[0001] This case is a divisional application, the filing date of the parent case is April 12, 2000, the application number is 00801123.0, and the title of the invention is "Component and Catalyst for Olefin Polymerization". technical field [0002] The present invention relates to propylene polymers for high isotactic index. The invention also relates to catalyst components for the polymerization of olefins, to the catalysts thus obtained and to said catalysts in olefins CH 2 = Use in the polymerization of CHR, wherein R is hydrogen or a hydrocarbyl group having 1-12 carbon atoms. In particular, the present invention relates to a catalyst component suitable for the directional polymerization of olefins, comprising Ti, Mg, halogen and an electron-donor compound selected from esters of substituted succinic acids (substituted succinic acid esters). Said catalyst components, when used in the polymerization of olefins, especially propylene, give very high yields of polymers and gi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/06C08F4/654C08F4/649C08F4/651C08F10/00C08F110/06C08F210/16
CPCC08F10/00C08F110/06C08F210/16C08F4/6465C08F4/6492C08F4/651C08F4/6494C08F2500/12C08F2500/20C08F210/08C08F10/02C08F10/06
Inventor G·莫里尼G·巴尔邦廷Y·V·古列维奇R·T·克尔德H·P·B·杜伊格惠森P·A·A·克鲁瑟纳F·M·科恩多菲尔
Owner MONTELL TECH CO BV
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