# US 5,349,023 A · Vinyl alcohol copolymer having terminal amino group

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- Number: US 5,349,023 A
- Document ID: US5349023A
- Status: Granted
- Kind: A
- Application number: 07/988,479
- Filed: 1992-12-10
- Granted: 1994-09-20
- Earliest claimed: 1991-12-12
- Assignees: Kuraray Co., Ltd.
- Inventors: Kaoru Ikeda; Toshiaki Sato
- Web page: https://patentgrep.com/patent/US5349023A

## CPC

- C08G 81/021: {Block or graft polymers containing only sequences of polymers of C08C or C08F}
- C08F 8/32: by reaction with amines
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

## Abstract

A vinyl alcohol copolymer having a terminal amino group and comprising 1-90 mol % of vinyl alcohol units and 10-90 mol % vinyl monomers selected from the group consisting of olefins, acrylamides, methacrylamides, vinyl ethers, nitriles, vinyl halides, and vinylidene halides, said copolymer having at least one terminal amino group is useful for preparing resin compositions having good gas barrier properties.

## Claims

### Claim 1

A vinyl alcohol copolymer having a terminal amino group comprising 1-90 mol % vinyl alcohol units 0-89 mol % vinyl ester units and 10-90 mol % vinyl monomers selected from the group consisting of allyl acetate, allyl chloride, vinyl trimethoxysilane, isopropanyl acetate, N-methylpyrrolidone, olefins, acrylamides, methacrylamides, vinyl ethers, nitriles, vinyl halides, and vinylidene halides, said copolymer having at least one terminal amino group.

### Claim 2 (depends on 1)

A vinyl alcohol copolymer according to claim 1 wherein said vinyl monomers are olefins selected from the group consisting of ethylene, propylene, 1-butene and isobutene.

### Claim 3 (depends on 1)

A vinyl alcohol copolymer according to claim 1 , wherein said vinyl monomers are acrylamides selected from the group consisting of acrylamide, N-methyl acrylamide, N-ethyl acrylamide, N,N-dimethyl acrylamide, acrylamidepropansulfonic acid or salts thereof, and acrylamidepropyldimethylamine or salts thereof.

### Claim 4 (depends on 1)

A vinyl alcohol copolymer according to claim 1, wherein said vinyl monomers are methacrylamides selected from the group consisting of methacrylamide, N-methyl methacrylamide, N-ethyl methacrylamide, and methacrylamidepropyldimethylamine or salts thereof.

### Claim 5 (depends on 1)

A vinyl alcohol copolymer according to claim 1 wherein said vinyl monomers are vinyl ethers selected from the group consisting of methyl vinyl ether, ethyl vinyl ether, N-propyl vinyl ether, iso-propyl vinyl ether, t-butyl vinyl ether, dodecyl vinyl ether and stearyl vinyl ether.

### Claim 6 (depends on 1)

A vinyl alcohol copolymer according to claim 1 wherein said vinyl monomers are nitriles selected from the group consisting of acrylonitrile and methacrylonitrile.

### Claim 7 (depends on 1)

A vinyl alcohol copolymer according to claim 1, wherein said vinyl monomers are vinyl halides selected from the group consisting of vinyl chloride and vinyl fluoride.

### Claim 8 (depends on 1)

A vinyl alcohol copolymer according to claim 1, wherein said vinyl monomers are vinylidene halides selected from the group consisting of vinylidene chloride and vinylidiene fluoride.

### Claim 9 (depends on 1)

A vinyl alcohol copolymer according to claim 1, wherein said vinyl ester units are selected from the group consisting of vinyl formate, vinyl acetate, vinyl propionate, vinyl pivalate, vinyl butrate, vinyl valerate, vinyl caprate, vinyl benzoate and vinyl trifluoroacetate.

### Claim 10 (depends on 1)

A vinyl alcohol copolymer according to claim 1 wherein said vinyl ester units is vinyl acetate and said vinyl monomer is ethylene.