Laminates prepared from solutions of resins containing amic acid

Details Laminates prepared from solutions of resins containing amic acid Laminates prepared from solutions of resins containing amic acid

1978-04-27

1982-06-29

Gallagher, John J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1563075, 1563311, 4273898, 428302, 428435, 4284735, 528205, 524726, 524729, 524753, 524879, C09J 502

Patent

active

043371108

ABSTRACT:
The applicants have provided laminates prepared by (a) impregnating a glass fabric with an N-methyl-2-pyrrolidone solution of a compound having the structure of Formula A shown in FIG. 1 of the drawings, (b) heating the impregnated glass fabric to remove solvent therefrom and to covert the amic acid groups to imide groups, and (c) assembling a plurality of the impregnated glass fabrics from (b) and heating the assembly under pressure to a temperature in the range of 177.degree.-260.degree. C.

REFERENCES:
patent: 3073784 (1963-01-01), Endrey
patent: 3247165 (1966-04-01), Rodia
patent: 3496132 (1970-02-01), Boldebuck et al.
patent: 3654227 (1972-04-01), Pine-Hart
patent: 3845018 (1974-10-01), Bilow et al.
patent: 4097456 (1978-06-01), Barie

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