TW200607817A - Polyvinyl alcohol having 1,2-glycol bond in side chain and its manufacturing method - Google Patents
Polyvinyl alcohol having 1,2-glycol bond in side chain and its manufacturing methodInfo
- Publication number
- TW200607817A TW200607817A TW093125325A TW93125325A TW200607817A TW 200607817 A TW200607817 A TW 200607817A TW 093125325 A TW093125325 A TW 093125325A TW 93125325 A TW93125325 A TW 93125325A TW 200607817 A TW200607817 A TW 200607817A
- Authority
- TW
- Taiwan
- Prior art keywords
- polyvinyl alcohol
- saponification
- manufacturing
- side chain
- glycol bonds
- Prior art date
Links
Abstract
The present invention provides a polyvinyl alcohol having 1,2-glycol bonds in side chains is characterized in that during the production thereof, dimethyl carbonate or the like is not generated, the step of recovery from the waste liquid resulting from saponification does not necessitate a step for dimethyl carbonate removal, and even when 1, 2-glycol bonds are incorporated in an increased amount, the copolymer (paste) before saponification has intact solubility in a saponification solution (methanol). The water solubility of polyvinyl alcohol resulted in no decrease even after it has undergone a heating process. The polyvinyl alcohol having 1, 2-glycol bonds in side chains is obtained by saponifying a copolymer of a vinyl ester monomer with a compound represented by the formula (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW093125325A TW200607817A (en) | 2004-08-23 | 2004-08-23 | Polyvinyl alcohol having 1,2-glycol bond in side chain and its manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW093125325A TW200607817A (en) | 2004-08-23 | 2004-08-23 | Polyvinyl alcohol having 1,2-glycol bond in side chain and its manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200607817A true TW200607817A (en) | 2006-03-01 |
TWI335921B TWI335921B (en) | 2011-01-11 |
Family
ID=45075048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW093125325A TW200607817A (en) | 2004-08-23 | 2004-08-23 | Polyvinyl alcohol having 1,2-glycol bond in side chain and its manufacturing method |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW200607817A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI403543B (en) * | 2005-01-31 | 2013-08-01 | Nippon Synthetic Chem Ind | A polyvinyl alcohol-based film for optical use, a polarizing film, and a polarizing plate |
US8772400B2 (en) | 2006-07-27 | 2014-07-08 | The Nippon Synthetic Chemical Industry Co., Ltd. | Polyvinyl alcohol-based film for optical use, polarizing film, and polarizing plate |
-
2004
- 2004-08-23 TW TW093125325A patent/TW200607817A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI403543B (en) * | 2005-01-31 | 2013-08-01 | Nippon Synthetic Chem Ind | A polyvinyl alcohol-based film for optical use, a polarizing film, and a polarizing plate |
US8772400B2 (en) | 2006-07-27 | 2014-07-08 | The Nippon Synthetic Chemical Industry Co., Ltd. | Polyvinyl alcohol-based film for optical use, polarizing film, and polarizing plate |
Also Published As
Publication number | Publication date |
---|---|
TWI335921B (en) | 2011-01-11 |
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Legal Events
Date | Code | Title | Description |
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GD4A | Issue of patent certificate for granted invention patent |