JPS6438410A - Preparation of vinyl chloride polymer - Google Patents
Preparation of vinyl chloride polymerInfo
- Publication number
- JPS6438410A JPS6438410A JP19409287A JP19409287A JPS6438410A JP S6438410 A JPS6438410 A JP S6438410A JP 19409287 A JP19409287 A JP 19409287A JP 19409287 A JP19409287 A JP 19409287A JP S6438410 A JPS6438410 A JP S6438410A
- Authority
- JP
- Japan
- Prior art keywords
- polymn
- vinyl chloride
- temp
- monomer
- slurry
- 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 enable a vinyl chloride polymer to be obtd. in an increased yodel in a short time without detriment to its quality, by raising the temp. of the slurry by a specified method in the final stage of polymn. and subsequently recovering the monomer in the aq. suspension polymn. of vinyl chloride. CONSTITUTION:The following method is employed in the suspension polymn. of a vinyl chloride monomer or a mixture of vinyl monomers including a vinyl chloride monomer in the presence of a partially saponified polyvinyl alcohol having a degree of saponification of 70-78% as a suspending agent in an aq. medium. The temp. of an aq. polymer suspension (hereinafter referred to as the slurry) is raised by 5-10 deg.C within 40min after the inner pressure of the polymn. vessel has begun to fall with the progress of polymn. as compared with the temp. immediately before the inner pressure of the polymn. vessel begins to fall, and the monomer is subsequently recovered when the slurry has risen to a given temp.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62194092A JPH0696618B2 (en) | 1987-08-03 | 1987-08-03 | Method for producing vinyl chloride polymer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62194092A JPH0696618B2 (en) | 1987-08-03 | 1987-08-03 | Method for producing vinyl chloride polymer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6438410A true JPS6438410A (en) | 1989-02-08 |
JPH0696618B2 JPH0696618B2 (en) | 1994-11-30 |
Family
ID=16318817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62194092A Expired - Lifetime JPH0696618B2 (en) | 1987-08-03 | 1987-08-03 | Method for producing vinyl chloride polymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0696618B2 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5124686A (en) * | 1974-08-26 | 1976-02-28 | Denki Kagaku Kogyo Kk | Mihannotanryotaino jokyohoho |
JPS5138377A (en) * | 1974-09-30 | 1976-03-31 | Nissan Chemical Ind Ltd | NETSUANTEISEIHORIENKABINIRUNO SEIZOHO |
US4001482A (en) * | 1975-04-30 | 1977-01-04 | Continental Oil Company | Preparation of vinyl halide-containing polymers |
JPS5432668A (en) * | 1977-08-15 | 1979-03-10 | Souhei Torii | Production of ice confectionery |
JPS5435880A (en) * | 1977-08-25 | 1979-03-16 | Nippon Synthetic Chem Ind Co Ltd:The | Dispersion stabilizer for suspension polymerization of vinyl compound |
JPS57212213A (en) * | 1981-06-22 | 1982-12-27 | Kanegafuchi Chem Ind Co Ltd | Preparation of vinyl chloride resin |
JPS5968302A (en) * | 1982-10-12 | 1984-04-18 | Unitika Chem Kk | Dispersion stabilizer for suspension polymerization of vinyl compound |
JPS61152703A (en) * | 1984-12-26 | 1986-07-11 | Mitsubishi Chem Ind Ltd | Production of vinyl chloride polymer |
-
1987
- 1987-08-03 JP JP62194092A patent/JPH0696618B2/en not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5124686A (en) * | 1974-08-26 | 1976-02-28 | Denki Kagaku Kogyo Kk | Mihannotanryotaino jokyohoho |
JPS5138377A (en) * | 1974-09-30 | 1976-03-31 | Nissan Chemical Ind Ltd | NETSUANTEISEIHORIENKABINIRUNO SEIZOHO |
US4001482A (en) * | 1975-04-30 | 1977-01-04 | Continental Oil Company | Preparation of vinyl halide-containing polymers |
JPS5432668A (en) * | 1977-08-15 | 1979-03-10 | Souhei Torii | Production of ice confectionery |
JPS5435880A (en) * | 1977-08-25 | 1979-03-16 | Nippon Synthetic Chem Ind Co Ltd:The | Dispersion stabilizer for suspension polymerization of vinyl compound |
JPS57212213A (en) * | 1981-06-22 | 1982-12-27 | Kanegafuchi Chem Ind Co Ltd | Preparation of vinyl chloride resin |
JPS5968302A (en) * | 1982-10-12 | 1984-04-18 | Unitika Chem Kk | Dispersion stabilizer for suspension polymerization of vinyl compound |
JPS61152703A (en) * | 1984-12-26 | 1986-07-11 | Mitsubishi Chem Ind Ltd | Production of vinyl chloride polymer |
Also Published As
Publication number | Publication date |
---|---|
JPH0696618B2 (en) | 1994-11-30 |
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Legal Events
Date | Code | Title | Description |
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R250 | Receipt of annual fees |
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EXPY | Cancellation because of completion of term | ||
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