Title:
FOAMABLE PLASTIC
Document Type and Number:
Japanese Patent JPS61272247
Kind Code:
A
Abstract:
A foamed polymethacrylimide resin having improved creep resistance at high temperature and reduced moisture absorption is obtained by heating a foamable resin composition consisting of (1) a copolymer formed between 47 to 53 percent by weight of methacrylonitrile monomer, 53 to 47 percent by weight of methacrylic acid monomer, and 0.01 to 4 percent, by weight of said monomers, of a metal salt of acrylic or methacrylic acid, and (2) 0.5 to 4 percent, also by weight of the monomers, of a blowing agent mixture of formamide or monomethyl formamide and a monohydric aliphatic alcohol having from 3 to 8 carbon atoms in the molecule.
Inventors:
BUIRII BICHIYU
Application Number:
JP11767386A
Publication Date:
December 02, 1986
Filing Date:
May 23, 1986
Export Citation:
Assignee:
ROEHM GMBH
International Classes:
C08L33/02; C08J9/04; C08J9/14; C08L33/00; C08L33/18; C08L33/20; (IPC1-7): C08J9/04; C08L33/02; C08L33/20
Attorney, Agent or Firm:
Toshio Yano