| 摘要 |
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 form 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 substrates, and may be applied as a spin finish, particularly to nylon filaments.
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