JPS54118491A - Preparation of high polymeric material having water absorption - Google Patents
Preparation of high polymeric material having water absorptionInfo
- Publication number
- JPS54118491A JPS54118491A JP2712078A JP2712078A JPS54118491A JP S54118491 A JPS54118491 A JP S54118491A JP 2712078 A JP2712078 A JP 2712078A JP 2712078 A JP2712078 A JP 2712078A JP S54118491 A JPS54118491 A JP S54118491A
- Authority
- JP
- Japan
- Prior art keywords
- polymeric material
- polyvinyl alcohol
- water absorption
- high polymeric
- carboxyl groups
- 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.)
- Granted
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To prepare a high polymeric material having high water absorption, by heat-treating a modified polyvinyl alcohol having soluble carboxyl groups.
CONSTITUTION: Polyvinyl alcohol having a polymerization degree of 100W5,000 and a saponification degree of 50W100 mol % is reacted with a cyclic acid anhydride, e.g. maleic or phthalic anhydride, in an anhydrous state at 30W150°C for 30 min W 10 hr tp gove a modified polyvinyl alcohol having soluble carboxyl groups, which is then dried and heat-treated at 80W250°C, preferably 100W200°C, for 1secW2hr, preferably 1 minW1 hr to give a crosslinking density of about one bond per high polymer molecule.
EFFECT: According to the method, a high polymeric material capable of adsorbing water in an amount of 50W500 times its own weight even in a short time of 1W 10 min can be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2712078A JPS54118491A (en) | 1978-03-07 | 1978-03-07 | Preparation of high polymeric material having water absorption |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2712078A JPS54118491A (en) | 1978-03-07 | 1978-03-07 | Preparation of high polymeric material having water absorption |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54118491A true JPS54118491A (en) | 1979-09-13 |
JPS6142721B2 JPS6142721B2 (en) | 1986-09-24 |
Family
ID=12212192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2712078A Granted JPS54118491A (en) | 1978-03-07 | 1978-03-07 | Preparation of high polymeric material having water absorption |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54118491A (en) |
Cited By (1)
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 |
-
1978
- 1978-03-07 JP JP2712078A patent/JPS54118491A/en active Granted
Cited By (1)
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 |
Also Published As
Publication number | Publication date |
---|---|
JPS6142721B2 (en) | 1986-09-24 |
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