Title:
MOLDING MATERIAL
Document Type and Number:
Japanese Patent JPH04300908
Kind Code:
A
Abstract:
PURPOSE:To obtain a molding material having good transparency, heat resistance and weather resistance as well as excellent moldability. CONSTITUTION:The objective molding material having 50000-200000 weight- average molecular weight and consisting of a copolymer composed of 10-30wt.% alpha-methylstyrene unit, 40-70wt.% methyl methacrylate unit and 10-30wt.% styrene unit and being in a range of 4-18g/10min in value of MFR. of the copolymer under 10kg load at 220 deg.C and having >=130 deg.C Vicat softening temperature of the copolymer.
Inventors:
YAMAMOTO TOSHIHIRO
KIMURA MASAO
SAITO KEIICHI
KIMURA MASAO
SAITO KEIICHI
Application Number:
JP8933191A
Publication Date:
October 23, 1992
Filing Date:
March 29, 1991
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL CO
NIPPON STEEL CORP
NIPPON STEEL CORP
International Classes:
C08F212/08; C08F212/00; C08F212/12; C08F220/10; C08F220/14; C08F220/18; (IPC1-7): C08F212/08; C08F212/12; C08F220/18
Attorney, Agent or Firm:
Katsuo Naruse (2 outside)