Insolubilization of soluble pre-imidized polyimides by polyhydra

Details Insolubilization of soluble pre-imidized polyimides by polyhydra Insolubilization of soluble pre-imidized polyimides by polyhydra

1990-04-23

1992-02-25

Kight, III., John

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

427 96, 428 357, 4284735, 524190, 525436, C08J 6122, C08L 6700, C08L 7300

Patent

active

050914669

ABSTRACT:
A polyhydrazine is used to insolubilize a soluble polyimide. Soluble polyimide films on printed circuit boards can be insolubilized in this manner.

REFERENCES:
patent: 3436372 (1969-04-01), Hoegger
patent: 3666709 (1972-05-01), Suzuki et al.
patent: 3847867 (1974-11-01), Heath et al.
patent: 4485140 (1984-11-01), Gannett et al.
patent: 4656238 (1987-04-01), Kunimune et al.

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