| abstract |
A polymer having at least one urea linkage prepared by: (i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, having isocyanate groups, and (b) at least one fluorinated compound selected from the formula (I):n nR f (CH 2 CF 2 ) p (CH 2 CH 2 ) q (R 1 ) r —XH Formula (I)n nwhereinn p and q are each independently an integer of 1 to 3; r is 0 or 1; X is —O—, —NH— or —S—; R 1 is a divalent radical selected from the group consisting of —S(CH 2 ) n —, nn n n n n n n n n n n n n is an integer of 2 to 4; n s is an integer of 1 to 50; n R 2 , R 3 , and R 4 are each independently hydrogen or an alkyl group containing 1 to 6 carbon atoms; and n R f is a linear or branched chain perfluoroalkyl group having 1 to 6 carbon atoms; and n (ii) reacting with (c) water, a linking agent, or a mixture thereof and methods for treating substrates to obtain surface effects is disclosed. |