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Heat synthesis preparation method for maleic anhydride grafted ethene-octylen copolymer

An octene copolymer and maleic anhydride technology, applied in the field of polymer science, can solve the problems of complex reaction conditions and devices, low grafting rate, uneven reaction, etc., and achieve the convenience of large-scale production, simple reaction equipment, and extensive The effect of applying the foreground

Inactive Publication Date: 2006-07-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method that is commonly used at present to prepare ethylene-octene-maleic anhydride graft copolymer has solution method, melting method (Huang Hua, Cheng Ying, Zhang Yinxi, China Plastics, 14 (12), 2000, 74-78; Yu Qiang, Lin Mingde, Zhang Wei, Gu Jingli, Plastic Industry, 30(4), 2002, 20-22; Liu Yaqing, Lu Menghai, Xiao Peng, Application of Engineering Plastics, 29(10), 2001, 17-19), irradiation method, Mechanical force method (Xia Shengli, Zhang Yuncan, Journal of Nanjing University of Technology, 26(5), 2004, 63-67), etc., the reaction conditions and devices of the solution method are relatively complicated, and the amount of solvent is large, which is not convenient for large-scale production; melt grafting reaction Simple, but the reactants are difficult to fully mix well, the reaction is not uniform, the grafting rate is also low, generally the grafting rate is lower than 1%wt, and it is easy to cross-link; the irradiation reaction is mostly carried out on the surface, and it needs to be irradiated. According to the equipment, the reaction is not uniform; the grafting rate of the mechanical reaction is very low, less than 0.5%wt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 5g of ethylene-octene resin, 0.5g of maleic anhydride, and 60mg of dibenzoyl peroxide into the autoclave, then put 50ml of xylene into the autoclave, tighten the lid of the autoclave and place it in a constant temperature oven at 160°C for 6 hour, then cooled with water, opened the autoclave, the solution was poured in the ethylene glycol of 250ml, stirred (rotating speed 150 rev / min) 1 hour on the magnetic stirrer, to remove the unreacted material, then suction filtration, the suction The powder obtained by filtration was dried in a vacuum oven at 70°C for 8 hours to obtain an ethylene-octene-maleic anhydride graft copolymer with a graft ratio of 5.3%wt.

Embodiment 2

[0015] Add 10g of ethylene-octene resin, 2g of maleic anhydride, 135mg of tert-butyl peroxybenzoate and 1g of acrylic acid into the autoclave, then put in 50ml of dimethyl sulfoxide, tighten the lid of the autoclave and place it in a 210°C In constant temperature oven, place 12 hours, then cool with water, open autoclave, solution is poured in the ethylene glycol of 300ml, stir (rotating speed 300 revs / min) 1 hour on magnetic stirrer, to remove unreacted substance, Then it was filtered by suction, and the powder obtained by suction filtration was dried in a vacuum oven at 80° C. for 28 hours to obtain an ethylene-octene-maleic anhydride graft copolymer with a graft rate of 5.7%wt.

Embodiment 3

[0017] Add 5g of ethylene-octene resin, 1.5g of maleic anhydride, 200mg of dicumyl peroxide and 1.5g of α-methyl methacrylate into the autoclave, then add 50ml of benzene, tighten the lid of the autoclave and put In a constant temperature oven at 160°C, place it for 24 hours, then cool it with water, open the autoclave, pour the solution into 300ml of ethylene glycol, stir on a magnetic stirrer (500 rpm) for 1 hour, to remove unreacted material, then suction-filtered, and the powder obtained by suction-filtration was dried in a vacuum oven at 80°C for 12 hours to obtain an ethylene-octene-maleic anhydride graft copolymer with a graft rate of 6.8%wt.

[0018] The maleic anhydride grafted ethylene-octene copolymer prepared by the method of the present invention is used as a compatibilizer for ethylene-octene and nylon blending, so that the flexibility of the blend is greatly improved; the prepared maleic anhydride grafted Ethylene-octene copolymer is used as a compatibilizer for...

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Abstract

The invention provides a dissolvent thermal synthesis Method for preparation of maleic anhydride grafting ethene-octene copolymer, adding ethane-octene resin, maleic anhydride, initiator and monomer and dissolving them in solvent, controlling reaction temperature above the solvent's boiling point, carrying through reaction in the supercritical state of systerm, making ethene-octene contacts with reactant sufficiently, then washing and desiccation, getting the grafted copolymer of ethene-octene maleic anhydride. The getted maleic anhydride grafting ethene-octene copolymer is used as compatible reagent of ethene-octene and polycarbonate, polyester, nylon, polyurethane, polyvinyl chloride blending, viz. getting composite material of better combination property. This invention's method is simple, the grafting rate is high, the mass production is easy and the application foreground is wide.

Description

technical field [0001] The invention relates to a solvothermal synthesis preparation method of maleic anhydride grafted ethylene-octene copolymer, which is a new method for preparing functionalized ethylene-octene block copolymers by solvothermal synthesis in an autoclave . This invention is in the field of polymer science. Background technique [0002] Ethylene-octene copolymer (POE) is a new type of polyolefin thermoplastic elastomer with narrow relative molecular weight distribution, narrow comonomer distribution and controllable structure, which was successfully developed with metallocene as a catalyst. As a thermoplastic elastomer, ethylene-octene has both the thermoplasticity of plastics and the crosslinking properties of rubber. It can be used in many applications with ethylene-vinyl acetate copolymer, EPDM rubber, thermoplastic styrene-butadiene rubber, F-PVC, butadiene rubber, ethylene-acrylate copolymer, ethylene-ethylene acrylate copolymer, benzene Ethylene-iso...

Claims

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Application Information

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IPC IPC(8): C08F255/02C08F4/32
CPCY02P20/54
Inventor 戚嵘嵘刘翘楚沈彦涵周持兴
Owner SHANGHAI JIAO TONG UNIV
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