Flexible base materials, their preparation and their use for pri

Details Flexible base materials, their preparation and their use for pri Flexible base materials, their preparation and their use for pri

1984-06-04

1985-01-29

Lesmes, George F.

Electricity: conductors and insulators

Conduits, cables or conductors

Single duct conduits

428458, 4284735, 4284744, 427 96, 528125, H05K 100

Patent

active

044967942

ABSTRACT:
Flexible base materials consisting of a metal foil and a film of a polyamide, polyamide-imide and/or polyimide, firmly adhering thereto without an intermediate layer, the film being obtained by heating a polyamide, polyamide-amidoacid and/or polyamide-acid containing the structural units of the formulae I and II.
The individual symbols are as defined in claim 1.
The base materials according to the invention are useful for the production of flexible printed circuits.

REFERENCES:
patent: 3682960 (1972-08-01), Haller
patent: 3809591 (1974-05-01), Vogelfanger et al.
patent: 4148969 (1979-04-01), Henderson
patent: 4196144 (1980-04-01), Darms
patent: 4239880 (1980-12-01), Darms

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