JPS54108890A - Preparation of vinyl chloride polymer - Google Patents
Preparation of vinyl chloride polymerInfo
- Publication number
- JPS54108890A JPS54108890A JP1606478A JP1606478A JPS54108890A JP S54108890 A JPS54108890 A JP S54108890A JP 1606478 A JP1606478 A JP 1606478A JP 1606478 A JP1606478 A JP 1606478A JP S54108890 A JPS54108890 A JP S54108890A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- polymerization
- chain transfer
- transfer agent
- preparation
- 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
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To improve the dispersion and the feed ratio of vinyl chloride monomer in the preparation of vinyl chloride polymer having relatively low degree of polymerization in an aqeous medium, by adding a specific chain transfer agent separately to the reaction system at the initiation of the polymerization and in the polymerization process.
CONSTITUTION: Vinyl chloride is polymerized using about 0.001-0.5 wt% of a chain transfer agent comprising an organic compound having a mercapto group and a hydroxyl group or a carboxyl group, e.g. 2-mercaptoethanol, 2-hydroxypropyl mercaptan, thioglycerine, etc. 1-50 wt% of the chain transfer agent (pref. 0.0005- 0.028% based on the monomer) is added at the initiation of the polymerization, and the rest of the agent is added thereto when the polymerization rate reaches 1-30%.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53016064A JPS5811889B2 (en) | 1978-02-15 | 1978-02-15 | Method for producing vinyl chloride polymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53016064A JPS5811889B2 (en) | 1978-02-15 | 1978-02-15 | Method for producing vinyl chloride polymer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54108890A true JPS54108890A (en) | 1979-08-25 |
JPS5811889B2 JPS5811889B2 (en) | 1983-03-05 |
Family
ID=11906136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53016064A Expired JPS5811889B2 (en) | 1978-02-15 | 1978-02-15 | Method for producing vinyl chloride polymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5811889B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4401812A (en) * | 1980-10-16 | 1983-08-30 | Hoffmann-La Roche Inc. | Anthracycline antibiotics |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59114785A (en) * | 1982-12-20 | 1984-07-02 | 松下電器産業株式会社 | Induction heating cooking device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4923592A (en) * | 1972-06-23 | 1974-03-02 | ||
JPS5016790A (en) * | 1973-05-21 | 1975-02-21 |
-
1978
- 1978-02-15 JP JP53016064A patent/JPS5811889B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4923592A (en) * | 1972-06-23 | 1974-03-02 | ||
JPS5016790A (en) * | 1973-05-21 | 1975-02-21 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4401812A (en) * | 1980-10-16 | 1983-08-30 | Hoffmann-La Roche Inc. | Anthracycline antibiotics |
Also Published As
Publication number | Publication date |
---|---|
JPS5811889B2 (en) | 1983-03-05 |
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