Title:
PRODUCTION OF FOAMED STYRENE RESIN
Document Type and Number:
Japanese Patent JPH04168130
Kind Code:
A
Abstract:
PURPOSE:To obtain the subject foamed material containing uniform and fine bubbles and having high quality without using fluorocarbons by using methyl chloride as a highly volatile liquid and mixing the liquid with a styrene resin and an inorganic filler. CONSTITUTION:The objective foamed material is produced by mixing (A) a styrene resin with (B) an inorganic filler, charging the mixture into an extruder, heating and melting the resin in the extruder, mixing the molten resin with the filler, pressing (C) a highly volatile liquid into the molten mixture and extruding the obtained expandable resin from the extruder. In the above process, 2-10wt.% of fine talc powder (based on the resin) is used as the component B and 2-4mol of methyl chloride (based on 1kg of the resin) is used as the component C.
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Inventors:
ISHIKAWA MIKIO
OGINOME YUTAKA
MASE YASUO
OGINOME YUTAKA
MASE YASUO
Application Number:
JP29448390A
Publication Date:
June 16, 1992
Filing Date:
October 31, 1990
Export Citation:
Assignee:
SEKISUI PLASTICS
International Classes:
C08J9/14; C08L25/00; (IPC1-7): C08J9/14; C08L25/00
Domestic Patent References:
| JPS6479238A | 1989-03-24 |
Attorney, Agent or Firm:
Masami Sakai