Title:
変性ポリビニルアルコールおよび水溶性フィルム
Document Type and Number:
Japanese Patent JP6461986
Kind Code:
B2
Abstract:
The present invention provides: a water-soluble film that is superior in cold water solubility and in practical properties such as strength and stiffness and that can resist deterioration in various properties such as chemical resistance over time; and a modified polyvinyl alcohol used for the water-soluble film. The present invention relates to a modified polyvinyl alcohol containing 0.05 to 10 mol% of a monomer unit having two carboxyl groups. In 1 H-NMR spectroscopy of the modified polyvinyl alcohol, an integral (X) from 6.8 to 7.2 ppm and an integral (Y) from 5.3 to 5.5 ppm satisfy the following expression: 0.60 ¤ X / X + Y < 1.0.
Inventors:
Yoko Mori
Masami Kato
Tatsuya Yata
Masami Kato
Tatsuya Yata
Application Number:
JP2016549951A
Publication Date:
January 30, 2019
Filing Date:
September 18, 2015
Export Citation:
Assignee:
KURARAY CO.,LTD.
International Classes:
B65D65/46; C08F216/06; C08F8/12; C08F8/48; C08F222/02; C08F222/12; C08J5/18; C08L29/04
Domestic Patent References:
| JP2001322668A | ||||
| JP4170405A | ||||
| JP9272773A | ||||
| JP2163149A | ||||
| JP2005139240A | ||||
| JP2005089655A | ||||
| JP2004161823A | ||||
| JP4071243U | ||||
| JP10060207A | ||||
| JP2006063242A | ||||
| JP6340899A | ||||
| JP4164998A | ||||
| JP53091995A |
Foreign References:
| WO2015098979A1 |
Attorney, Agent or Firm:
Koichi Kamata
Tamura Yasuaki
Tamura Yasuaki
Previous Patent: 弁輪形成用インプラントの送達装置及び方法
Next Patent: FILM COATING PROCESS AND BLENDING AGENT OF LIQUID PHOTO SOLDER RESIST
Next Patent: FILM COATING PROCESS AND BLENDING AGENT OF LIQUID PHOTO SOLDER RESIST