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Patent Searching and Data


Title:
VINYL ALCOHOL-VINYL ACETATE COPOLYMER
Document Type and Number:
WIPO Patent Application WO/2017/195735
Kind Code:
A1
Abstract:
The present invention provides: a vinyl alcohol-vinyl acetate copolymer which has excellent solubility; and a method for producing a vinyl alcohol-vinyl acetate copolymer. The present invention is a vinyl alcohol-vinyl acetate copolymer which has a unit composed of vinyl alcohol and a unit composed of vinyl acetate, and wherein the randomness value R obtained by formula (1) using the average chain length LO of the unit composed of vinyl alcohol and the average chain length LA of the unit composed of vinyl acetate is 0.5 or more.

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)
Application Number:
JP2017/017409
Publication Date:
November 16, 2017
Filing Date:
May 08, 2017
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:
C08F8/14; C08F8/12; C08F216/06; C08F218/08
Foreign References:
JPH06234899A1994-08-23
JP2016047799A2016-04-07
JPH07114005A1995-05-02
JPH02153960A1990-06-13
JPS62241865A1987-10-22
Other References:
ILYIN, SERGEY O. 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
DENISOVA, YU. I. ET AL.: "Chain Statistics in Vinyl Acetate-Vinyl Alcohol Multiblock Copolymers", POLYMER SCIENCE, vol. 54, no. 7-8, 1 July 2012 (2012-07-01), pages 375 - 382, XP055581683, ISSN: 1560-0904, 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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