JPS5485288A - Suspension stabilizer for polymerization of vinyl compound - Google Patents
Suspension stabilizer for polymerization of vinyl compoundInfo
- Publication number
- JPS5485288A JPS5485288A JP15299877A JP15299877A JPS5485288A JP S5485288 A JPS5485288 A JP S5485288A JP 15299877 A JP15299877 A JP 15299877A JP 15299877 A JP15299877 A JP 15299877A JP S5485288 A JPS5485288 A JP S5485288A
- Authority
- JP
- Japan
- Prior art keywords
- suspension stabilizer
- polymerization
- vinyl
- pref
- saponification
- 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
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Polymerisation Methods In General (AREA)
Abstract
PURPOSE: To provide a suspension stabilizer for the polymerization of vinyl compounds, comprising a lactone-ring-containing modified polyvinyl alcohol having a specific degree of saponification, and useful for the production of a polymer free of fish-eye.
CONSTITUTION: A modified polyvinyl alcohol containing 0.1W15 mol%, pref. 3W10 mol% of lactone ring and having a degree of saponification of 60W95%, pref. 75W90%, is used as a suspension stabilizer for the polymerization of a vinyl compound such as vinyl chloride. The suspension stabilizer is prepared by (1) copolymerizing vinyl acetate with an ethylenic unsaturated carboxylic acid alkyl ester, and (2) saponyfying the copolymer in absolute alcohol in the pesence of 0.001W 0.06 mole equivalent, based on the vinyl acetate, of an alkali catalyst. The vinyl chloride polymer prepared by using the above suspension stabilizer has high plasticizer absorption, and gives a film free from fish-eye.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15299877A JPS5485288A (en) | 1977-12-21 | 1977-12-21 | Suspension stabilizer for polymerization of vinyl compound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15299877A JPS5485288A (en) | 1977-12-21 | 1977-12-21 | Suspension stabilizer for polymerization of vinyl compound |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5485288A true JPS5485288A (en) | 1979-07-06 |
JPS5546641B2 JPS5546641B2 (en) | 1980-11-25 |
Family
ID=15552710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15299877A Granted JPS5485288A (en) | 1977-12-21 | 1977-12-21 | Suspension stabilizer for polymerization of vinyl compound |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5485288A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5968302A (en) * | 1982-10-12 | 1984-04-18 | Unitika Chem Kk | Dispersion stabilizer for suspension polymerization of vinyl compound |
EP1099672A3 (en) * | 1999-11-11 | 2002-04-10 | Kuraray Co., Ltd. | Ceramic-molding binder |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3654247A (en) * | 1968-02-23 | 1972-04-04 | Du Pont | Production of 93-100% alcoholyzed polyvinyl alcohol having low cold water solubles content and improved slurrying properties |
JPS4936797A (en) * | 1972-08-11 | 1974-04-05 |
-
1977
- 1977-12-21 JP JP15299877A patent/JPS5485288A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3654247A (en) * | 1968-02-23 | 1972-04-04 | Du Pont | Production of 93-100% alcoholyzed polyvinyl alcohol having low cold water solubles content and improved slurrying properties |
JPS4936797A (en) * | 1972-08-11 | 1974-04-05 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5968302A (en) * | 1982-10-12 | 1984-04-18 | Unitika Chem Kk | Dispersion stabilizer for suspension polymerization of vinyl compound |
EP1099672A3 (en) * | 1999-11-11 | 2002-04-10 | Kuraray Co., Ltd. | Ceramic-molding binder |
Also Published As
Publication number | Publication date |
---|---|
JPS5546641B2 (en) | 1980-11-25 |
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