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Title:
RESIN MATERIAL, PRODUCTION METHOD THEREFOR, AND WATER-SOLUBLE FILM
Document Type and Number:
WIPO Patent Application WO/2019/159756
Kind Code:
A1
Abstract:
Provided is a resin material capable of giving a water-soluble film which has sufficient water solubility and, despite this, shows reduced solubility in the beginning of immersion in water. Also provided is a production method by which the resin material can be easily obtained. Furthermore provided is a water-soluble film which has sufficient water solubility and, despite this, shows reduced solubility in the beginning of immersion in water. The resin material comprises a modified vinyl-alcohol-based polymer (A) as the main component, wherein the modified vinyl-alcohol-based polymer (A) has, in a side chain, both a sulfonic acid group or salt thereof and an aromatic ring bonded to the sulfonic acid group or salt thereof and the amount in which the modified vinyl-alcohol-based polymer (A) has been modified with the sulfonic acid group or salt thereof is 0.01-10 mol%, the resin material having an inorganic-salt content of 100 ppm or less.

Inventors:
NII SHINSUKE (JP)
Application Number:
PCT/JP2019/004046
Publication Date:
August 22, 2019
Filing Date:
February 05, 2019
Export Citation:
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Assignee:
KURARAY CO (JP)
International Classes:
C08F8/36
Foreign References:
JP2001220411A2001-08-14
JP2001247625A2001-09-11
JPH11222546A1999-08-17
JPH02187480A1990-07-23
JPH11279831A1999-10-12
JPH1171150A1999-03-16
JPS58116361A1983-07-11
JPH04114014A1992-04-15
JPH10101729A1998-04-21
JPS63218741A1988-09-12
JPH10504332A1998-04-28
JP2014198767A2014-10-23
JPS4974728A1974-07-18
Attorney, Agent or Firm:
AMANO Kazunori (JP)
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