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Linear low-density polyethylene and preparation method thereof

A linear low-density polyethylene technology, applied in the field of linear polyethylene preparation, can solve the problems of complex synthesis route, high production cost, difficult processing, etc., and achieve the effects of uniform composition distribution, low production cost and less raw material consumption.

Inactive Publication Date: 2019-02-19
南京安伦化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When metallocene catalysts are used to produce linear polyethylene, the mixture has high polymerization activity and the composition of the prepared LLDPE is evenly distributed, but the synthetic route is complicated and the raw materials are expensive, so the production cost is high and the processing is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A linear low-density polyethylene, consisting of the following raw materials in parts by weight: 50 parts of linear low-density polyethylene, 40 parts of chlorinated paraffin, 20 parts of solid paraffin, 11 parts of catalyst, 4 parts of dispersant, 2 parts of initiator, 2 parts of antioxidant, 60 parts of deionized water and 1 part of anti-blocking agent.

[0027] The dispersant is zinc stearate.

[0028] The initiator is benzoyl peroxide.

[0029] The antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate.

[0030] The antiblocking agent is a mixture of stearic acid amide and sodium hydrogen phosphate.

[0031] The mass ratio of described stearic acid amide and sodium hydrogen phosphate is 5:7.

[0032] The catalyst is composed of the following raw materials in parts by weight: 40 parts of silicon dioxide powder, 26 parts of bentonite, 17 parts of sebacic acid, 4 parts of erucamide, 7 parts of triethylaluminum, 3 parts of triisobutylaluminum, 1...

Embodiment 2

[0044] A linear low-density polyethylene, consisting of the following raw materials in parts by weight: 60 parts of linear low-density polyethylene, 30 parts of chlorinated paraffin, 26 parts of solid paraffin, 7 parts of catalyst, 7 parts of dispersant, 1 part of initiator, 4 parts of antioxidant, 50 parts of deionized water and 3 parts of anti-blocking agent.

[0045] The dispersant is zinc stearate.

[0046] The initiator is benzoyl peroxide.

[0047] The antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate.

[0048] The antiblocking agent is a mixture of stearic acid amide and sodium hydrogen phosphate.

[0049] The mass ratio of described stearic acid amide and sodium hydrogen phosphate is 5:7.

[0050] The catalyst is composed of the following raw materials in parts by weight: 30 parts of silicon dioxide powder, 36 parts of bentonite, 10 parts of sebacic acid, 8 parts of erucamide, 4 parts of triethylaluminum, 6 parts of triisobutylaluminum, 10...

Embodiment 3

[0062] A linear low-density polyethylene, consisting of the following raw materials in parts by weight: 55 parts of linear low-density polyethylene, 35 parts of chlorinated paraffin, 22 parts of solid paraffin, 10 parts of catalyst, 5 parts of dispersant, 1 part of initiator, 3 parts of antioxidant, 57 parts of deionized water and 2 parts of anti-blocking agent.

[0063] The dispersant is zinc stearate.

[0064] The initiator is benzoyl peroxide.

[0065] The antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate.

[0066] The antiblocking agent is a mixture of stearic acid amide and sodium hydrogen phosphate.

[0067] The mass ratio of described stearic acid amide and sodium hydrogen phosphate is 5:7.

[0068] The catalyst is composed of the following raw materials in parts by weight: 37 parts of silicon dioxide powder, 30 parts of bentonite, 16 parts of sebacic acid, 7 parts of erucamide, 4 parts of triethylaluminum, 6 parts of triisobutylaluminum, 1...

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PUM

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Abstract

The invention relates to linear low-density polyethylene and a preparation method thereof. The linear low-density polyethylene is composed of, by weight, 50-60 parts of linear low-density polyethylene, 30-40 parts of chlorinated paraffin, 20-26 parts of solid paraffin, 7-11 parts of catalyst, 4-7 parts of dispersant, 1-2 parts of initiator, 2-4 parts of antioxidant, 50-60 parts of deionized waterand 1-3 parts of anti-adhesion agent. The preparation method is low in raw material consumption and production cost, and prepared linear polyethylene copolymer is uniform in composition distribution,high in tensile performance and better in application characteristic.

Description

technical field [0001] The invention relates to a linear low-density polyethylene and a preparation method thereof, belonging to the field of preparation methods of linear polyethylene. Background technique [0002] Linear low-density polyethylene (LLDPE) is a random copolymer of ethylene and α-olefin. The catalytic system for producing LLDPE includes supported Ziegler-Natta catalyst and metallocene catalyst. When metallocene catalysts are used to produce linear polyethylene, the mixture has high polymerization activity and the composition of the prepared LLDPE is evenly distributed, but the synthesis route is complicated and the raw materials are expensive, so the production cost is high and the processing is difficult. When the supported Ziegler-Natta catalyst is used to produce linear polyethylene, since the supported Ziegler-Natta catalyst has a variety of active centers, and the copolymerization ability of the active centers is poor, the resulting linear low-density pol...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L91/06C08K5/098C08K5/134C08K5/20C08K3/32C08K13/02
CPCC08K2003/324C08L23/0815C08L2205/025C08L2205/03C08L91/06C08K5/098C08K5/1345C08K5/20C08K3/32C08K13/02
Inventor 陈桂平相解
Owner 南京安伦化工科技有限公司
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