Title:
VINYL ACETAL-BASED POLYMER AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2005029764
Kind Code:
A
Abstract:
To provide a vinyl acetal-based polymer excellent in thermal decomposition property, and a method for producing the same, improved in working property and exhibiting a good efficiency by shortening its working time required for the preparation of an aqueous PVA solution used for the production of the vinyl acetal-based polymer.
This method for producing the vinyl acetal-based polymer is provided by preparing the aqueous vinyl alcohol-based polymer solution having 1.8-3 mol % amount of 1,2-glycol bond, 100-8,000 degree of polymerization and 80-99.99 mol % degree of saponification and subjecting the aqueous vinyl alcohol-based solution under an acetal-formation reaction. The vinyl acetal-based polymer is produced by the method of production.
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Inventors:
KUMAKI YOSUKE
KUSUFUJI TAKESHI
FUJIWARA NAOKI
KUSUFUJI TAKESHI
FUJIWARA NAOKI
Application Number:
JP2003273725A
Publication Date:
February 03, 2005
Filing Date:
July 11, 2003
Export Citation:
Assignee:
KURARAY CO
International Classes:
C08F8/28; C08F16/38; (IPC1-7): C08F8/28; C08F16/38
Attorney, Agent or Firm:
Hirosaburo Mori
Toshio Mori
Shigeki Nakatsugu
Toshio Mori
Shigeki Nakatsugu
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