Title:
MODIFIED ETHYLENE-VINYL ALCOHOL COPOLYMER, ITS PRODUCTION AND WATER-SOLUBLE FILM, WATER-SOLUBLE PACKAGING MATERIAL, AND WATER-SOLUBLE HOT-MELT ADHESIVE CONTAINING THE SAME
Document Type and Number:
Japanese Patent JPH09227633
Kind Code:
A
Abstract:
To obtain a modified ethylene-vinyl alcohol copolymer which dissolves quickly even in cold water, is thermoplastic; and is suitable for a water-sol. film or an adhesive by reacting an ethylene-vinyl alcohol copolymer with a (meth)acrylic compd. by a specific way.
This modified copolymer comprises 20-55mol% structural units represented by formula I, 40-77mol% structural units represented by formula II, and 3-40mol% structural units represented by formula III, has a melt viscosity of 1,000-30,000P at 23°C, and is obtd. by subjecting a solid ethylene-vinyl alcohol copolymer and a liq. (meth)acrylic compd. to Michael addition reaction under solid-liq. reaction conditions.
Inventors:
NISHIGUCHI HIROSHI
WATANABE TOSHIO
KITADA AKIRA
WATANABE TOSHIO
KITADA AKIRA
Application Number:
JP3599196A
Publication Date:
September 02, 1997
Filing Date:
February 23, 1996
Export Citation:
Assignee:
DAI ICHI KOGYO SEIYAKU CO LTD
International Classes:
C08J5/18; C08F216/06; C08F261/04; C09J129/04; (IPC1-7): C08F216/06; C08F261/04; C08J5/18; C09J129/04
Attorney, Agent or Firm:
Hitoko Tsuda (1 person outside)
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