JPS5721407A - Production of vinyl chloride polymer - Google Patents
Production of vinyl chloride polymerInfo
- Publication number
- JPS5721407A JPS5721407A JP9611380A JP9611380A JPS5721407A JP S5721407 A JPS5721407 A JP S5721407A JP 9611380 A JP9611380 A JP 9611380A JP 9611380 A JP9611380 A JP 9611380A JP S5721407 A JPS5721407 A JP S5721407A
- Authority
- JP
- Japan
- Prior art keywords
- polymerization
- mixture
- slurry
- vinyl chloride
- upper portion
- 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)
- Polymerisation Methods In General (AREA)
Abstract
PURPOSE: To control foaming on the surface of a polymerization mixture, by recirculating a slurry mixture in the polymerization system through a recirculation pipe to the upper portion inside the reactor during the latter half of the polymerization period, and spraying the slurry from spray nozzles over the surface of the polymerization mixture, in polymerizing a vinyl chloride type monomer in an aqueous medium.
CONSTITUTION: Into a polymerization vessel are charged a vinyl chloride-based monomer (mixture), a polymerization initiator, an aqueous medium and a dispersing aid, to start the polymerization. During the polymerization reaction, the slurry mixture of the polymerization system, after the conversion has reached 50%, is circulated continuously or intermittently through a recirculation pipe to the upper portion inside the reactor, and the slurry mixture is sprayed from at least one nozzle provided on the upper portion over the surface of the polymerization mixture, to continue the polymerization and finally obtain a vinyl chloide (co)polymer. The time of recovery can be shortened by performing the circulation and spraying of the slurry mixture also during the unreacted monomer recovery operation subsequent to the polymerization reaction.
EFFECT: No scale forms, and products with less fish eyes can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9611380A JPS5721407A (en) | 1980-07-14 | 1980-07-14 | Production of vinyl chloride polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9611380A JPS5721407A (en) | 1980-07-14 | 1980-07-14 | Production of vinyl chloride polymer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5721407A true JPS5721407A (en) | 1982-02-04 |
| JPH0124162B2 JPH0124162B2 (en) | 1989-05-10 |
Family
ID=14156328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9611380A Granted JPS5721407A (en) | 1980-07-14 | 1980-07-14 | Production of vinyl chloride polymer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5721407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6334549U (en) * | 1986-08-13 | 1988-03-05 | ||
| JP2006273896A (en) * | 2005-03-28 | 2006-10-12 | Kaneka Corp | Polymerization vessel having reflux condenser and method for producing polymer by using the same |
-
1980
- 1980-07-14 JP JP9611380A patent/JPS5721407A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6334549U (en) * | 1986-08-13 | 1988-03-05 | ||
| JP2006273896A (en) * | 2005-03-28 | 2006-10-12 | Kaneka Corp | Polymerization vessel having reflux condenser and method for producing polymer by using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0124162B2 (en) | 1989-05-10 |
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