Polyimide precursor compositions, their manufacture, the resulta

Details Polyimide precursor compositions, their manufacture, the resulta Polyimide precursor compositions, their manufacture, the resulta

1986-09-10

1988-01-19

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

560 37, 560 41, 560 76, C08G 6926

Patent

active

047205393

ABSTRACT:
Polyimide precursor compositions are described which may be prepared by rting a biprimary aromatic diamine with a diester-diacid or an aromatic tetraacid, and then with the substantially stoichiometrical complement of an aromatic dianhydride.
The polyimide precursor compositions are used in the manufacture of insulating coatings, films, impregnating or enamelling varnishes for electric wires etc., and have excellent qualities of flexibility, adhesiveness and heat resistance.

REFERENCES:
patent: 4225702 (1980-09-01), Makino et al.
patent: 4389510 (1983-06-01), McGregor et al.
patent: 4467000 (1984-08-01), Economy et al.
patent: 4524171 (1985-06-01), Bakshi et al.
patent: 4661582 (1987-04-01), McCready

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