Aromatic polyimide laminate sheet

Details Aromatic polyimide laminate sheet Aromatic polyimide laminate sheet

1986-12-15

1988-11-29

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

1563082, 428220, 4284735, B32B 702, B32B 2708

Patent

active

047880988

ABSTRACT:
An aromatic polyimide laminate sheet having a relatively large thickness of 50 .mu.m or more comprises (1) at least one first film layer comprising a polymerization-imidization product of an acid component containing 80 to 100 molar % of at least one biphenyltetracarboxylic acid with an amine component containing 80 to 100 molar % of at least one aromatic diamine having two or more benzene rings, and having a glass transition point of 250.degree. C. to 350.degree. C.; and (2) at least one second film layer comprising an aromatic imide polymer, the first and second film layers being alternately laminated on and directly bonded to each other without using bonding material.

REFERENCES:
patent: 4543295 (1985-09-01), St Clair et al.

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