Microporous poly (arylether ketone) article

Details Microporous poly (arylether ketone) article Microporous poly (arylether ketone) article

1987-11-10

1989-08-22

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

21050021, 21050027, 521 61, 521 62, 525434, 525436, 525928, C08J 926

Patent

active

048597155

ABSTRACT:
This invention provides a method for the preparation of an article from a blend of at least two molecularly compatible polymers by treating the blend with a solvent which is a solvent for one of the polymers and a non-solvent for the other. The solvent can be removed while the article is restrained from undergoing substantial shrinkage, in which case a microporous article is obtained. Alternatively, the solvent can be removed while the article is permitted to shrink. In this case high shrinkage force (also referred to as recovery force) results which can be utilized to apply the article to a substrate. The final and intermediate articles are novel. In a preferred embodiment, the invention provides a microporous article having an average pore size of about 0.005 microns to about 1 micron.

REFERENCES:
patent: 4176222 (1979-11-01), Cinderey et al.
patent: 4293670 (1981-10-01), Robeson et al.
patent: 4359501 (1982-11-01), DiTullio
patent: 4503168 (1985-03-01), Hortsing, Jr.
patent: 4714725 (1987-12-01), Hendy et al.
patent: 4755540 (1988-07-01), Blakey

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