Title:
FOAM OF HIGH-STRENGTH STYRENIC RESIN HAVING EXCELLENT SECONDARY FOAMING MOLDABILITY
Document Type and Number:
Japanese Patent JPH04236247
Kind Code:
A
Abstract:
PURPOSE:To obtain high-strength styrenic resin foam moldable at low temperature, having excellent secondary foaming moldability by blending a specific styrenic polymer with a block copolymer in a fixed ratio and molding the prepared styrenic resin. CONSTITUTION:A styrenic resin comprising (A) a styrenic polymer composed of (i) 75-99.5wt.% constituent unit shown by formula I (R1 is H or methyl; R2 is H or 1-5C alkyl) and (ii) 0.5-25 wt.% constituent unit shown by formula II (R3 is H or methyl; R4 is 1-8C alkyl) and (B) a styrenic polymer composed of (iii) a vinyl aromatic hydrocarbon polymer made of a vinyl aromatic hydrocarbon such as styrene and (iv) a polymer block consisting essentially of a conjugated diene in a weight ratio of 40:60-95:5 in a ratio of the component A and B of 99.5:0.5-85:15 by weight is extrusion-molded to give the objective foam.
Inventors:
SHO KAZUHIKO
Application Number:
JP344491A
Publication Date:
August 25, 1992
Filing Date:
January 16, 1991
Export Citation:
Assignee:
ASAHI CHEMICAL IND
International Classes:
C08J9/14; C08L25/00; B29C47/00; B29K25/00; B29K105/04; (IPC1-7): B29C47/00; B29K25/00; B29K105/04; C08J9/14; C08L25/00
Domestic Patent References:
| JPS6338060A | 1988-02-18 |
Attorney, Agent or Firm:
Takeshi Shimizu (2 outside)
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