Fluorine-containing copolymers

Details Fluorine-containing copolymers Fluorine-containing copolymers

C - Chemistry, Metallurgy

08

F

402/511, 8/93.19

C08F 220/24 (2006.01) D06M 15/277 (2006.01)

Patent

CA 1241499

TITLE FLUORINE-CONTAINING COPOLYMERS ABSTRACT OF THE DISCLOSURE Polymers containing by weight (i) from about 50 to about 85 parts of units derived from at least one monomer (FM) having the formula Image wherein Rf is straight or branched-chain perfluoroalkyl containing 4-20 carbons; R is H or CH3; and n is an integer from 1-15, and (ii) from about 50 to about 15 parts of units derived from 3-chloro-2-hydroxypropyl methacrylate and/or acrylate (CHPM/A) or their bromo analogs. Preferably, the polymers contain by weight between 65 and 75 parts of units derived from FM and 35-25 parts of units derived from CHPM/A, particularly a copolymer consisting essentially by weight of 75 percent of a mixture of FM and 25 percent of CHPM. Polymers impart superior oil- and water-repellency and anti-soiling characteristics to fibrous sub- strates, and may be applied as a spin finish, particularly to nylon filaments.

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