Olefin efficient polymerization catalyst, and preparation method and application thereof

A technology for olefin polymerization and catalyst, applied in the preparation of catalyst and catalyst field, can solve the problems of easy adhesion to the container wall and low catalyst activity, and achieve the effects of good particle shape, high catalyst activity and low environmental pollution

Active Publication Date: 2015-08-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst activity is low, and the main catalyst particles are easy to adhere to the container wall

Method used

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  • Olefin efficient polymerization catalyst, and preparation method and application thereof
  • Olefin efficient polymerization catalyst, and preparation method and application thereof
  • Olefin efficient polymerization catalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In the reactor fully replaced by nitrogen, add 1g of diethoxymagnesium, 20ml of n-decane, and 0.2g of alkoxy organic phosphate ether compound (1) conforming to the general formula (3), and stir to raise the temperature to 60°C , Reaction 2h. Lower the system to -15°C, add 30ml of titanium tetrachloride dropwise, react for 1h, then raise the temperature to 90°C for another 2h. Stop stirring, stand still, separate layers, filter, wash with hexane four times (30 ml each time), and vacuum dry at 70°C for 2 hours to obtain a spherical powder with good fluidity, non-stick container wall, uniform particle size distribution solid catalyst.

Embodiment 2

[0039] In the reactor fully replaced by nitrogen, 1g of diethoxymagnesium, 30ml of n-hexane, and 0.3g of alkoxy organic phosphate ether compound (2) conforming to the general formula (3) were sequentially added, and the temperature was raised to 70°C with stirring. Reaction 3h. Lower the system to -10°C, add 40ml of titanium tetrachloride dropwise, react for 2h, raise the temperature to 80°C and react for another 3h. Stop stirring, stand still, separate layers, filter, wash with hexane four times (30 ml each time), and dry in vacuum at 60°C for 2 hours to obtain a spherical powder with good fluidity, non-stick container wall, uniform particle size distribution solid catalyst.

Embodiment 3

[0041] In the reactor fully replaced by nitrogen, add 1g of diethoxymagnesium, 40ml of n-heptane, and 0.1g of alkoxy organic phosphate ether compound (3) conforming to the general formula (3) in sequence, and stir to raise the temperature to 80°C , Reaction 2h. Lower the system to -5°C, add 20ml of titanium tetrachloride dropwise, react for 3h, then raise the temperature to 100°C for another 2h. Stop stirring, stand still, separate layers, filter, wash with hexane four times (30 ml each time), and dry in vacuum at 80°C for 2 hours to obtain a spherical powder with good fluidity, non-stick container wall, uniform particle size distribution solid catalyst.

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Abstract

The invention provides an olefin efficient polymerization catalyst. The catalyst is composed of a main catalyst and a cocatalyst, the main catalyst is composed of an alkyloxy magnesium carrier, transition metal halide and an alkyloxy organic phosphoric acid ether compound according to a molar ratio of 1:(1-40):(0.01-10); and the cocatalyst is an organic aluminum compound. The catalyst has the advantages of good particle form, high catalysis activity and good hydrogen regulation performance. The invention also provides a preparation method and an application of the olefin efficient polymerization catalyst.

Description

technical field [0001] The invention belongs to the field of olefin polymerization catalysts and olefin polymerization, and in particular relates to a catalyst for homopolymerization or copolymerization of olefins, a preparation method and application of the catalyst. Background technique [0002] Olefin polymerization catalysts are the core of polyolefin polymerization technology. From the perspective of the development of olefin polymerization catalysts, there are two main aspects: (1) the development of polyolefin resin catalysts that can prepare special or better performance, such as metallocene catalysts (2) For the production of general-purpose polyolefin resins, on the basis of further improving catalyst performance, simplify the catalyst preparation process, reduce catalyst costs, and develop environmentally friendly technologies to improve efficiency ,Increase competitiveness. After nearly 30 years of hard work, the catalytic efficiency of polyethylene catalysts ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/02C08F210/16C08F110/06C08F210/06C08F4/649C08F4/651C08F4/654
Inventor 黄启谷张润聪王静李红明余朦山陈洋何磊杨万泰
Owner BEIJING UNIV OF CHEM TECH
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