JPS55112242A - Production of foamable styrene copolymer particle - Google Patents
Production of foamable styrene copolymer particleInfo
- Publication number
- JPS55112242A JPS55112242A JP1953779A JP1953779A JPS55112242A JP S55112242 A JPS55112242 A JP S55112242A JP 1953779 A JP1953779 A JP 1953779A JP 1953779 A JP1953779 A JP 1953779A JP S55112242 A JPS55112242 A JP S55112242A
- Authority
- JP
- Japan
- Prior art keywords
- solvent
- pellets
- copolymer particles
- particles
- maleic anhydride
- 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.)
- Pending
Links
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE: To obtain title copolymer particles which can provide foamed products having excellent heat resistance and high extent of expansion, by suspending styrene/maleic anhydride copolymer particles in an aqueous medium, adding to the suspension a blowing agent and a solvent which dissolves the particles, and impregnating the particles with the agent and the solvent.
CONSTITUTION: Styrene copolymer particles containing 2W25% of maleic anhydride and having an average degree of polymerization of 500W4,000 are prepared by block-polymerizing styrene and maleic anhydride by the use of a catalyst and pelletizing the polymer through an extruder. The foamable styrene copolymer particles of the purpose are prepared by suspending the pellets in an aqueous medium by the use of a dispersing agent, such as polyacrylate salt and methylcellulose, adding to the suspension a solvent which dissolves the pellets, such as benzene, toluene or xylene, and a blowing agent, such as propane or n-butane, and impregnating the pellets with the solvent and the blowing agent.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1953779A JPS55112242A (en) | 1979-02-20 | 1979-02-20 | Production of foamable styrene copolymer particle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1953779A JPS55112242A (en) | 1979-02-20 | 1979-02-20 | Production of foamable styrene copolymer particle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55112242A true JPS55112242A (en) | 1980-08-29 |
Family
ID=12002067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1953779A Pending JPS55112242A (en) | 1979-02-20 | 1979-02-20 | Production of foamable styrene copolymer particle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55112242A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59223704A (en) * | 1983-06-01 | 1984-12-15 | Sekisui Plastics Co Ltd | Modified styrene/maleic anhydride copolymer resin and expandable particle |
JP2008274133A (en) * | 2007-04-27 | 2008-11-13 | Sekisui Plastics Co Ltd | Expandable resin particles and method for producing the same |
-
1979
- 1979-02-20 JP JP1953779A patent/JPS55112242A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59223704A (en) * | 1983-06-01 | 1984-12-15 | Sekisui Plastics Co Ltd | Modified styrene/maleic anhydride copolymer resin and expandable particle |
JP2008274133A (en) * | 2007-04-27 | 2008-11-13 | Sekisui Plastics Co Ltd | Expandable resin particles and method for producing the same |
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