JPS57105429A - Preparation of thick board of foamed polystyrene resin - Google Patents
Preparation of thick board of foamed polystyrene resinInfo
- Publication number
- JPS57105429A JPS57105429A JP18183880A JP18183880A JPS57105429A JP S57105429 A JPS57105429 A JP S57105429A JP 18183880 A JP18183880 A JP 18183880A JP 18183880 A JP18183880 A JP 18183880A JP S57105429 A JPS57105429 A JP S57105429A
- Authority
- JP
- Japan
- Prior art keywords
- polystyrene resin
- component
- mixture
- foaming agent
- molecular weight
- 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
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE: To prepare the titled foam having good extrusion muldability and excellent mechanical strength, dimensional stability and heat insulation, by melting and kneading a specific high molecular weight polystyrene resin with a volatile foaming agent in the presence of a specific solvent, and extruding the molten material to a low-pressure zone.
CONSTITUTION: (A) A polystyrene resin having a weight-average molecular weight of (20W35)×104 determined by gel permeation chromatography (GPC) [a (co)polymer containing styrene as a main monomer component]is mixed with (B) 2,500W7,000ppm of a solvent miscible with the component A under molten state, and having a boiling point of pref. 70W170°C (1 atm) (e.g. ethylbenzene) and (C) 8W17 PHR of a volatile foaming agent (e.g. a mixture of CF2Cl2, C2H5Cl and CH3Cl at wt. ratios of 60:20:20) based on the component A, and the mixture is kneaded under melting and foamed.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18183880A JPS57105429A (en) | 1980-12-24 | 1980-12-24 | Preparation of thick board of foamed polystyrene resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18183880A JPS57105429A (en) | 1980-12-24 | 1980-12-24 | Preparation of thick board of foamed polystyrene resin |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57105429A true JPS57105429A (en) | 1982-06-30 |
JPS6230218B2 JPS6230218B2 (en) | 1987-07-01 |
Family
ID=16107691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18183880A Granted JPS57105429A (en) | 1980-12-24 | 1980-12-24 | Preparation of thick board of foamed polystyrene resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57105429A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6264835A (en) * | 1985-07-11 | 1987-03-23 | ベ−リンガ− インゲルハイム コマンデイツト ゲゼルシヤフト | Nucleating agent for manufacturing direct foaming type thermoplastic foam |
JPS6289743A (en) * | 1985-06-20 | 1987-04-24 | Eiwa Kasei Kogyo Kk | Production of styrene resin foam |
JPS62502476A (en) * | 1985-09-20 | 1987-09-24 | ザ ダウ ケミカル カンパニ− | Polymer composition expanded with water vapor and its manufacturing method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62125210U (en) * | 1986-01-31 | 1987-08-08 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55118932A (en) * | 1979-03-09 | 1980-09-12 | Japan Styrene Paper Co Ltd | Manufacture of foamed polystyrene resin board |
-
1980
- 1980-12-24 JP JP18183880A patent/JPS57105429A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55118932A (en) * | 1979-03-09 | 1980-09-12 | Japan Styrene Paper Co Ltd | Manufacture of foamed polystyrene resin board |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6289743A (en) * | 1985-06-20 | 1987-04-24 | Eiwa Kasei Kogyo Kk | Production of styrene resin foam |
JPS6264835A (en) * | 1985-07-11 | 1987-03-23 | ベ−リンガ− インゲルハイム コマンデイツト ゲゼルシヤフト | Nucleating agent for manufacturing direct foaming type thermoplastic foam |
JPS62502476A (en) * | 1985-09-20 | 1987-09-24 | ザ ダウ ケミカル カンパニ− | Polymer composition expanded with water vapor and its manufacturing method |
Also Published As
Publication number | Publication date |
---|---|
JPS6230218B2 (en) | 1987-07-01 |
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