Heat-stable polyimide resins from bis-imide and aldehyde-azine

Details Heat-stable polyimide resins from bis-imide and aldehyde-azine Heat-stable polyimide resins from bis-imide and aldehyde-azine

1972-02-22

1976-12-21

Anderson, Harold D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 302, 260 308R, 260 312N, 260 326N, 260 328N, 260 332R, 260 336R, 260 336UA, 260 338R, 260 338UA, 260 37N, 260 47EP, 260 47UA, 260 65, 260 72R, 260 725, 260 73R, 260857PE, 260857UN, 428435, 428474, 526 111, 526 112, 08L 7310, C08L 6926

Patent

active

039987876

ABSTRACT:
New heat-stable resins are provided having good mechanical and electrical properties combined with chemical inertness at temperatures of 200.degree. to 300.degree. C, which resins comprise three-dimensional recurring units of the general formula: ##STR1## in which, in any particular recurring unit: A IS ZERO OR AN INTEGER FROM 1 TO 5; ##STR2## denotes a radical of the general formula ##STR3## in which Y represents H, CH.sub.3 or Cl;
G denotes a monovalent aromatic radical; and
A denotes a divalent organic radical possessing at least two carbon atoms,
Such that there are on average, at least 4.4 and at most about 20>D.sub.1 < radicals per ##STR4## radical, and optionally, units and/or molecules of the general formula ##STR5## in which: T denotes a monovalent organic radical;
T.sub.1 denotes a radical of the general formula: ##STR6## or a radical of the general formula: ##STR7## b is zero or an integer from 1 to 4; and A, D.sub.1 and G are as defined in claim 1; such that there are at most about 30 ##STR8## radicals per 100 ##STR9## radicals.

REFERENCES:
patent: 3562223 (1971-02-01), Bargain et al.
patent: 3652511 (1972-03-01), Vincent et al.
patent: 3679639 (1972-07-01), Bargain et al.
Journal of Polymer Science; Part A, vol. 2, 1964, pp. 1487-1491; Stille et al.

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