Diffusion barrier for solvents and inorganic cations on polyimid

Details Diffusion barrier for solvents and inorganic cations on polyimid Diffusion barrier for solvents and inorganic cations on polyimid

1989-09-13

1991-12-31

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Composite

Of polyimide

427 96, 4274301, 428626, 428901, 428911, B32B 2714

Patent

active

050771361

ABSTRACT:
A method of inhibiting diffusion into a polyimide body by organic solvents and cations comprising applying ammonia to one or more surfaces of the body prior to exposing the surface to the solvents and cations. A composite article incorporating the diffusion barrier is also disclosed.

REFERENCES:
patent: 4482577 (1984-11-01), Goldstein et al.

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