Title:
ETHYLENE-VINYLALCOHOL COPOLYMER AQUEOUS SOLUTION
Document Type and Number:
WIPO Patent Application WO/2019/117118
Kind Code:
A1
Abstract:
An aqueous solution including an ethylene-vinylalcohol copolymer (A), a C1-4 alcohol (B), and water (C), wherein the content ratio of ethylene units in the ethylene-vinylalcohol copolymer (A) is 1 mol% to less than 20 mol%, the in-water crystallinity Cw (30°C) at 30°C and the in-water crystallinity Cw (70°C) at 70°C determined by pulse NMR of the ethylene-vinylalcohol copolymer (A) satisfy formula (I), and the aqueous solution includes 0.1-100 parts by mass of the ethylene-vinylalcohol copolymer (A) with respect to 100 parts by mass of water (C), and 0.01-30 parts by mass of the alcohol (B) with respect to 100 parts by mass of water (C). An aqueous solution including an ethylene-vinylalcohol copolymer is thereby provided, in which there is little occurrence of unmixed lumps and the occurrence of fibrillar deposits is reduced even when shearing stress is applied.
Inventors:
MORIKAWA KEISUKE (JP)
TANIDA TATSUYA (JP)
TANIDA TATSUYA (JP)
Application Number:
PCT/JP2018/045420
Publication Date:
June 20, 2019
Filing Date:
December 11, 2018
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08L29/04; C08F216/06; C09D7/20; C09D129/04; C08J3/12
Foreign References:
| JPH1121788A | 1999-01-26 | |||
| JPH1190927A | 1999-04-06 | |||
| JP2002121290A | 2002-04-23 | |||
| JP2002080606A | 2002-03-19 | |||
| JPH1121788A | 1999-01-26 |
Attorney, Agent or Firm:
SETOUCHI INTERNATIONAL PATENT FIRM (JP)
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