JPS5599933A - Production of modified foamable styrene resin particle - Google Patents

Production of modified foamable styrene resin particle

Info

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
Application number
JP844979A
Other languages
Japanese (ja)
Other versions
JPS5833889B2 (en
Inventor
Hideaki Shibata
Toshiaki Fukushima
Mutsuhisa Osawa
Toru Fujii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Denko Materials Co Ltd
Original Assignee
Hitachi Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP844979A priority Critical patent/JPS5833889B2/en
Publication of JPS5599933A publication Critical patent/JPS5599933A/en
Publication of JPS5833889B2 publication Critical patent/JPS5833889B2/en
Expired legal-status Critical Current

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
JP844979A 1979-01-26 1979-01-26 Method for producing modified expandable styrenic resin particles Expired JPS5833889B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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