JPS5599933A - Production of modified foamable styrene resin particle - Google Patents
Production of modified foamable styrene resin particleInfo
- Publication number
- JPS5599933A JPS5599933A JP844979A JP844979A JPS5599933A JP S5599933 A JPS5599933 A JP S5599933A JP 844979 A JP844979 A JP 844979A JP 844979 A JP844979 A JP 844979A JP S5599933 A JPS5599933 A JP S5599933A
- Authority
- JP
- Japan
- Prior art keywords
- styrene resin
- temperature
- blowing agent
- heat
- fragments
- 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 improve the efficiency of a blowing agent, retention, heat resistance in molding, and mechanical strength, by heat-treating foam-extruded fragments of a styrene resin, impregnated with the blowing agent, at a specific temperature.
CONSTITUTION: Extruded fragments of a styrene resin consisting of 50wt% or more of styrene are impregnated with 3W10wt% of a blowing agent, e.g. n- or iso-pentene, to give foamable ones, which are then heat-treated at such a temperature as not to cause foaming to prepare the desired foamed molded particles. Preferably, the heat treatment is carried out at the temperature where the centers of the fragments become transparent, and the upper limit is the foaming start temperature (S) with the lower limit of about 10W15°C lower than S. The treating time is 5min or longer per mm of the particle diameter.
EFFECT: Moderate coarsening of cells in particles is possible.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP844979A JPS5833889B2 (en) | 1979-01-26 | 1979-01-26 | Method for producing modified expandable styrenic resin particles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP844979A JPS5833889B2 (en) | 1979-01-26 | 1979-01-26 | Method for producing modified expandable styrenic resin particles |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5599933A true JPS5599933A (en) | 1980-07-30 |
JPS5833889B2 JPS5833889B2 (en) | 1983-07-22 |
Family
ID=11693426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP844979A Expired JPS5833889B2 (en) | 1979-01-26 | 1979-01-26 | Method for producing modified expandable styrenic resin particles |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5833889B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023054045A1 (en) * | 2021-09-30 | 2023-04-06 | 積水化成品工業株式会社 | Foamable styrene-based resin particles, pre-foamed styrene-based resin particles, and styrene-based resin foam molded article |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0313034Y2 (en) * | 1986-11-13 | 1991-03-26 | ||
JP6752543B1 (en) | 2020-01-04 | 2020-09-09 | 正通 亀井 | Driving restriction system |
-
1979
- 1979-01-26 JP JP844979A patent/JPS5833889B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023054045A1 (en) * | 2021-09-30 | 2023-04-06 | 積水化成品工業株式会社 | Foamable styrene-based resin particles, pre-foamed styrene-based resin particles, and styrene-based resin foam molded article |
Also Published As
Publication number | Publication date |
---|---|
JPS5833889B2 (en) | 1983-07-22 |
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