JPS5755907A - Production of styrene polymer particle - Google Patents
Production of styrene polymer particleInfo
- Publication number
- JPS5755907A JPS5755907A JP13077680A JP13077680A JPS5755907A JP S5755907 A JPS5755907 A JP S5755907A JP 13077680 A JP13077680 A JP 13077680A JP 13077680 A JP13077680 A JP 13077680A JP S5755907 A JPS5755907 A JP S5755907A
- Authority
- JP
- Japan
- Prior art keywords
- suspension
- styrene
- polymer
- bulk
- reaction system
- 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
Abstract
PURPOSE: To obtain titled sharp-MW distribution polymer particles suitable as particles for foamable polymer beads, by polymerizing styrene by a combination of bulk polymerization and suspension polymerization and at the same time feeding styrene in portions to the reaction system.
CONSTITUTION: One hundred (100) pts.wt. polymerizable ethylenically unsaturated monomer based on styrene is bulk-polymerized in the presence of an initiator, e.g., benzoyl peroxide, until the viscosity of the reaction system at 20°C becomes 100W 10,000cP. Next, the polymer particles of the purpose are obtained by feeding the bulk-polymerized polymer into water containing a suspension stabilizer, e.g., polyvinyl alcohol, heating the suspension to initiate suspension polymerization of the unreacted monomer, feeding 200W900pts.wt. fresh ethylenically unsaturated monomer based on styrene to the suspension reaction system at a point when the conversion of monomer into polymer reaches at least 40wt% and completing the suspension polymerization.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13077680A JPS5755907A (en) | 1980-09-22 | 1980-09-22 | Production of styrene polymer particle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13077680A JPS5755907A (en) | 1980-09-22 | 1980-09-22 | Production of styrene polymer particle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5755907A true JPS5755907A (en) | 1982-04-03 |
JPH0122841B2 JPH0122841B2 (en) | 1989-04-28 |
Family
ID=15042393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13077680A Granted JPS5755907A (en) | 1980-09-22 | 1980-09-22 | Production of styrene polymer particle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5755907A (en) |
-
1980
- 1980-09-22 JP JP13077680A patent/JPS5755907A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH0122841B2 (en) | 1989-04-28 |
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