Production method of copolymer of allyl monomer containing polar group

A technology of polar groups and copolymers, which is applied in the field of preparing copolymers of allyl monomers containing polar groups, can solve the problems of reduced polymerization activity, high catalyst cost, and difficulty in use, so as to achieve improved activity, Effect of improving catalyst life and reducing catalyst cost
CN102498137AActive Publication Date: 2012-06-13THE UNIV OF TOKYO +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
THE UNIV OF TOKYO
Publication Date
2012-06-13

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Abstract

The present invention relates to a method for producing a high-molecular-weight copolymer of polar group- containing allyl monomers comprising monomer units represented by formulae (3) and (4) (in the formulae, R1 represents a hydrogen atom (H) or hydrocarbon group having 1 to 6 carbon atoms; R2 represents -OH, -OCOR3 (R3 represents hydrocarbon group having 1 to 5 carbon atoms), -N(R4)2 (R4 represents a hydrogen atom or hydrocarbon group having 1 to 5 carbon atoms); and n and m are a value representing the molar ratio of each of the monomer units), which has few branches and unsaturated group at the molecular end, by copolymerizing olefin and an allyl compound using a metal complex of group 10 elements in the periodic system represented by a specific formula as a catalyst.
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Description

technical field

[0001] The present invention relates to a preparation method of a copolymer of an allyl monomer containing a polar group and a copolymer obtained by the method. Background technique

[0002] Copolymers of non-polar monomeric olefins such as ethylene and propylene with polar group-containing vinyl monomers are well known. In particular, ethylene-vinyl alcohol copolymer (EVOH) is a random copolymer comprising ethylene and vinyl alcohol, which is synthesized by saponifying ethylene-vinyl acetate copolymer obtained by radical copolymerization of ethylene and vinyl acetate . Due to excellent gas barrier properties, EVOH is widely used in fields such as food packaging applications.

[0003] It is widely known that copolymers obtained by copolymerization of ethylene by radical polymerization generate short-chain branches and long-chain branches due to back biting reactions. For example, in the case of EVOH, it is reported that there are about 1 mol% of alkyl bran...

Claims

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