Stock material or miscellaneous articles – Hollow or container type article – Cellular material derived from plant or animal source
Patent
1982-07-27
1985-12-10
Cannon, James C.
Stock material or miscellaneous articles
Hollow or container type article
Cellular material derived from plant or animal source
428422, 55522, 428913, 430 18, 55528, 430 20, 430138, 55DIG42, 430348, 430496, 204296, 204301, 2105002, 2105101, 210927, 264 41, 264 48, 264176F, 264178F, 264178R, 2642091, 2642093, 2642101, 424 19, 424 22, 424 27, 424DIG7, 427 55, 427244, 4283055, 4283155, 4283157, 4283166, 4283206, 4283208, 4283215, 4283227, 428398, 428401, B01D 3916
Patent
active
045579555
ABSTRACT:
The invention relates to films and tubular structures which are selectively permeable to liquids and gases which are based on a copolymer composed of a copolymerized fluorinated olefin, copolymerized vinyl acetate and, optionally, a copolymerized olefin. It is possible for the acetate groups of the copolymer to have been saponified to form OH groups. The films or tubular structures have in each case an inherent, latent capacity for modifying their structure and are at the same time oleophobic and oleophilic. The invention also embraces processes for the preparation of the shaped articles described and processes for modifying their structure. The invention also relates to the use of shaped articles according to the invention.
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European Search Report.
Kuhls Jurgen
Michel Wolfgang
Seifried Walter
Walch Axel
Wildhardt Jurgen
Cannon James C.
Hoechst Aktiengesellschaft
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