Patent ID: 9359480
Filing Date: 2016-06-07
CPC Classification: B01D,C08J

Claim Text:
1. A fluorocarbon liquid composition comprising a fluorocarbon liquid medium containing a fluorinated ionomer dissolved or dispersed therein, the fluorinated ionomer having iodine and/or bromine atoms at a terminal position, at least 90% by weight of the fluorinated ionomer consisting in particles of size lower than 200 nm, wherein the fluorinated ionomer comprises units from copolymerization of: i) tetrafluoroethylene; ii) fluorinated monomer units containing ethylenic groups and functional groups chosen from —SO iii) monomeric units deriving from a bis-olefin, chosen from formulae (OF-1), (OF-2), or (OF-3) where: wherein j is an integer between 2 and 10, and R1, R2, R3, R4, individually equal or different from each other, are H, F or C wherein each of A, equal or different from each other and at each occurrence, is independently F, Cl, or H; each of B, equal or different from each other and at each occurrence, is independently F, Cl, H or ORB, wherein RB is a branched or straight chain alkyl radical which can be partially, substantially or completely fluorinated or chlorinated; E is a divalent group having 2 to 10 carbon atom, optionally fluorinated, which may be inserted with ether linkages; wherein E, A and B have the same meaning as above defined; R5, R6, R7, independently equal or different from each other, are H, F or C1-5 alkyl or (per)fluoroalkyl group; and iv) a compound having the formula R wherein the fluorocarbon liquid medium comprises a mixture of perfluoropolyethers, said perfluoropolyethers having the general formula F wherein the fluorinated ionomer has an equivalent weight of between 380 g/eq and 620 g/eq; and wherein the concentration of fluorinated ionomer in the fluorocarbon liquid composition range from 0.1 weight percent to 4 weight percent.