Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Patent
1994-07-20
1996-02-27
Dodson, Shelley A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
524600, 524606, 524607, C08G 7310
Patent
active
054949963
ABSTRACT:
A polyimide resin composition substantially comprising 1 99.9.about.50 parts by weight of polyimide having recurring structural units of the formula ##STR1## and 2 0.1.about.50 parts by weight of a polyimide which improved melt flowability and is prepared by using 1,3-bis(3-aminophenoxy)benzene or 6,6'-bis(3-aminophenoxy)-3,3,3',3'-tetramethyl-1,1'-spirobiindane as essential diamine component, or polyether pyridine having recurring structural units of the formula: ##STR2## is disclosed. Further, a polyimide based resin composition comprising the polyimide resin composition or a polyimide copolymer obtained by using the above diamines and a fibrous reinforcement is disclosed. These compositions have remarkably good processability, excellent heat stability and repeated fatigue characteristics.
REFERENCES:
patent: 4485140 (1984-11-01), Gannett et al.
patent: 4734482 (1988-03-01), Tamai et al.
Patent Abstracts of Japan, vol. 13, No. 221 (C-598) (3569); May 23, 1989.
Asanuma Tadashi
Matsuo Mitsunori
Oikawa Hideaki
Okawa Yuichi
Sakata Yoshihiro
Dodson Shelley A.
Mitsui Toatsu Chemicals Inc.
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