JPS54118490A - Preparation of modified polyvinyl alcohol - Google Patents
Preparation of modified polyvinyl alcoholInfo
- Publication number
- JPS54118490A JPS54118490A JP2711978A JP2711978A JPS54118490A JP S54118490 A JPS54118490 A JP S54118490A JP 2711978 A JP2711978 A JP 2711978A JP 2711978 A JP2711978 A JP 2711978A JP S54118490 A JPS54118490 A JP S54118490A
- Authority
- JP
- Japan
- Prior art keywords
- polyvinyl alcohol
- modified polyvinyl
- preparation
- anhydride
- cyclic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To prepare a uniformly modified polyvinyl alcohol, by esterifying polyvinyl alcohol with a cyclic acid anhydride in a swelling solvent in an anhydrous state.
CONSTITUTION: Polyvinyl alcohol having a polymerization degree of 100W5,000 and a saponification degree of 50W100 mole % is esterified with a cyclic acid anhydride, e.g. maleic or phthalic anhydride, in an anhydrous state in a solvent which swells the polyvinyl alcohol and will not react with the anhydride in the presence of a catalyst, e.g. NaOH or Na2CO3, at 30W150°C for 30 minW10 hr.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2711978A JPS54118490A (en) | 1978-03-07 | 1978-03-07 | Preparation of modified polyvinyl alcohol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2711978A JPS54118490A (en) | 1978-03-07 | 1978-03-07 | Preparation of modified polyvinyl alcohol |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54118490A true JPS54118490A (en) | 1979-09-13 |
Family
ID=12212167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2711978A Pending JPS54118490A (en) | 1978-03-07 | 1978-03-07 | Preparation of modified polyvinyl alcohol |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54118490A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56155203A (en) * | 1980-04-30 | 1981-12-01 | Kuraray Co Ltd | Production of carboxyl group-containing polymer material |
JPH04121424U (en) * | 1991-04-19 | 1992-10-29 | 臼井国際産業株式会社 | Radiator shutter and blades used therein |
-
1978
- 1978-03-07 JP JP2711978A patent/JPS54118490A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56155203A (en) * | 1980-04-30 | 1981-12-01 | Kuraray Co Ltd | Production of carboxyl group-containing polymer material |
JPH04121424U (en) * | 1991-04-19 | 1992-10-29 | 臼井国際産業株式会社 | Radiator shutter and blades used therein |
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