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Title:
VINYL ALCOHOL-VINYL ACETATE COPOLYMER
Document Type and Number:
WIPO Patent Application WO/2019/098247
Kind Code:
A1
Abstract:
The present invention provides: a vinyl alcohol-vinyl acetate copolymer which exhibits excellent solubility, and with which a film exhibiting high flexibility, mechanical strength, and adhesiveness can be prepared; and a method for producing the vinyl alcohol-vinyl acetate copolymer. This vinyl alcohol-vinyl acetate copolymer is provided with units comprising a vinyl alcohol and units comprising vinyl acetate, and has a triad unit chain ratio TOO obtained using formula (1) of 7.5 or lower. In formula (1), the VOH content refers to the content of the units comprising the vinyl alcohol, the Vac content refers to the content of the units comprising the vinyl acetate, the OOO content ratio refers to the content ratio of OOO triad chains, and the AOO content ratio refers to the content ratio of AOO triad chains.

Inventors:
UTE, Koichi (1 Minamijosanjimacho 2-chome, Tokushima-sh, Tokushima 06, 〒7708506, JP)
HIRANO, Tomohiro (1 Minamijosanjimacho 2-chome, Tokushima-sh, Tokushima 06, 〒7708506, JP)
OSHIMURA, Miyuki (1 Minamijosanjimacho 2-chome, Tokushima-sh, Tokushima 06, 〒7708506, JP)
KUSAKA, Yasunari (2-1, Hyakuyama, Shimamotocho, Mishima-gu, Osaka 21, 〒6180021, JP)
NISHIMURA, Yohei (2-1, Hyakuyama, Shimamotocho, Mishima-gu, Osaka 21, 〒6180021, JP)
SENOO, Misaki (2-1, Hyakuyama, Shimamotocho, Mishima-gu, Osaka 21, 〒6180021, JP)
Application Number:
JP2018/042183
Publication Date:
May 23, 2019
Filing Date:
November 14, 2018
Export Citation:
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Assignee:
TOKUSHIMA UNIVERSITY (24 Shinkuracho 2-chome, Tokushima-shi Tokushima, 01, 〒7708501, JP)
SEKISUI CHEMICAL CO., LTD. (4-4 Nishitemma 2-chome, Kita-ku Osaka-sh, Osaka 47, 〒5300047, JP)
International Classes:
C08F218/08; C08F216/08
Domestic Patent References:
WO2015019614A12015-02-12
WO2017195735A12017-11-16
Foreign References:
JPH02153960A1990-06-13
JP2001055414A2001-02-27
JPH06234899A1994-08-23
JP2016047799A2016-04-07
Other References:
SENOO MISAKI: "Vinyl alcohol obtained by various polymer reactions- Linkage analysis of vinyl acetate copolymers", POLYMER PREPRINTS, JAPAN, vol. 65, no. 1, 10 May 2016 (2016-05-10)
SENOO MISAKI: "Vinyl alcohol obtained by various polymer reactions- Linkage analysis of vinyl acetate copolymers", POLYMER PREPRINTS, JAPAN, vol. 65, no. 2, 24 August 2016 (2016-08-24)
ILYIN, SERGEY 0. ET AL.: "Effect of Chain Structure on the Rheological Properties of Vinyl Acetate-Vinyl Alcohol Copolymers in Solution and Bulk", MACROMOLECULES, vol. 47, 2014, pages 4790 - 4804, XP055438160, ISSN: 0024-9297, DOI: doi:10.1021/ma5003326
DENISOVA, YU. I.: "Chain Statistics in Vinyl Acetate-Vinyl Alcohol Multiblock Copolymers", POLYMER SCIENCE, SERIES B, vol. 54, 2012, pages 375 - 382, XP055581683, ISSN: 1560-0904, DOI: doi:10.1134/S1560090412070032
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (5-36, Miyahara 3-chome Yodogawa-ku, Osaka-sh, Osaka 03, 〒5320003, JP)
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