| abstract |
A composition comprising monomers copolymerized in the following percentages by weight: (a) from about 20 % to about 95 % of a monomer, or mixture of monomers, of formula (I): Rf(CH2CF2)q(CH2CH2)r-Z-C(O)-C(R)=CH2 (I) wherein q and r are each independently integers of 1 to 3; Rf is a linear or branched perfluoroalkyl group having 2 to 6 carbon atoms; Z is -O-, -NR1- or -S-; R is hydrogen, C1, F or CH3; R1 is hydrogen, or a C1 to C4 alkyl; and (b) from about 5 % to about 80 % of at least one of: (i) an alkyl (meth)acrylate monomer having a linear, branched or cyclic alkyl group of 6 to 18 carbons; or (ii) a monomer of formula (II): (R2)2N-R3-O-C(O)-C(R)=CH2 (II) wherein R is as defined above; each R2 is independently a C1 to C4 alkyl; and R3 is a divalent linear or branched C1 to C4 alkylene; and wherein the nitrogen is from about 40% to 100% salinized; or (iii) a mixture thereof; said composition providing oil repellency, water repellency, and stain resistance to substrates contacted therewith; and a method for treating substrates with such copolymer compositions; are disclosed. |