JPS56163104A - Production of vinyl chloride polymer - Google Patents
Production of vinyl chloride polymerInfo
- Publication number
- JPS56163104A JPS56163104A JP3512281A JP3512281A JPS56163104A JP S56163104 A JPS56163104 A JP S56163104A JP 3512281 A JP3512281 A JP 3512281A JP 3512281 A JP3512281 A JP 3512281A JP S56163104 A JPS56163104 A JP S56163104A
- Authority
- JP
- Japan
- Prior art keywords
- dispersant
- gelatin
- polymer
- vinyl chloride
- production
- 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
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To obtain titled polymer excellent in heat resistance etc., by using as a dispersant a combination of a gelatin dispersant and polyvinylpyrrolidone and removing the gelatin dispersant from the polymer surfaces, in the production of a vinyl chloride polymer.
CONSTITUTION: In suspension-polymerizing vinyl chloride or its mixture with a monomer copolymerizable therewith, e.g., ethylene, propylene, there is used, as a dispersant for the polymerization system, a combination of (A) about 0.1W3pts.wt. gelatin dispersant, e.g., acid-treated gelatin, and (B) about 0.1W3pts.wt., polyvinllpyrrolidone or 0.01W3pts.wt. partially saponified polyvinyl acetate per 100pts.wt. monomer. Then, the produced polymer is reacted with a proteolytic enzyme, e.g., trypsin, urochinase, to remove the gelatin dispersant on the polymer surfaces. This improves the absorptivity for plasticizers and the mechanical properties after processing.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3512281A JPS56163104A (en) | 1981-03-11 | 1981-03-11 | Production of vinyl chloride polymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3512281A JPS56163104A (en) | 1981-03-11 | 1981-03-11 | Production of vinyl chloride polymer |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16109879A Division JPS56103202A (en) | 1979-12-12 | 1979-12-12 | Preparation of vinyl polymer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56163104A true JPS56163104A (en) | 1981-12-15 |
JPH0127099B2 JPH0127099B2 (en) | 1989-05-26 |
Family
ID=12433119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3512281A Granted JPS56163104A (en) | 1981-03-11 | 1981-03-11 | Production of vinyl chloride polymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56163104A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54161098A (en) * | 1978-05-25 | 1979-12-20 | Kawaguchi Kinzoku Kogyo Kk | Link insulation cap |
JPS5623612A (en) * | 1979-08-06 | 1981-03-06 | Toshiyuki Kawahara | Compression returning device for drain |
-
1981
- 1981-03-11 JP JP3512281A patent/JPS56163104A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54161098A (en) * | 1978-05-25 | 1979-12-20 | Kawaguchi Kinzoku Kogyo Kk | Link insulation cap |
JPS5623612A (en) * | 1979-08-06 | 1981-03-06 | Toshiyuki Kawahara | Compression returning device for drain |
Also Published As
Publication number | Publication date |
---|---|
JPH0127099B2 (en) | 1989-05-26 |
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