Acryloxyorganosiloxane polymer

Details Acryloxyorganosiloxane polymer Acryloxyorganosiloxane polymer

1987-10-07

1989-03-07

Marquis, Melvyn I.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

528 32, 428336, 428339, 427387, C08F 3008

Patent

active

048107662

ABSTRACT:
Disclosed are an acryloxyorganosiloxane polymer having a structural unit represented by the formula (1): ##STR1## wherein X.sup.1 is chlorine atom or fluorine atom, X.sup.2 and X.sup.3 are the same or different and each represent hydrogen atom or a group --CH.sub.2 (CF.sub.2).sub.p CF.sub.3 (wherein p is 0 or an integer of 1 to 5), Y is oxygen atom or --NH-- group, m is 0 or an integer of 1 to 5 and n is 0 or an integer of 1 to 5; an acryloxyorganosiloxane polymer further having a structural unit represented by the following formula (2) in an amount of not more than 50% by weight based on the combined weight of the structural unit of the formula (1) and the structural unit of the formula (2): ##STR2## wherein X.sup.4 is hydrogen atom, chlorine atom, fluorine atom, alkyl group having 1 to 3 carbon atoms or fluoroalkyl group having 1 to 3 carbon atoms, R is alkyl group having 1 to 20 carbon atoms or fluoroalkyl group having 1 to 20 carbon atoms (with the proviso that oxygen atom may be contained in the carbon atom chain); and a gas separating membrane prepared from the polymer having the structural unit of the formula (1) or a combination of structural unit of the formula (1) and not more than 50% by weight of structural unit of the formula (2).

REFERENCES:
patent: 4216303 (1980-08-01), Novicky
patent: 4508884 (1985-04-01), Wittmann et al.

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