FLUOROPOLYMER COMPOSITIONS AND TREATED SUBSTRATES

摘要

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): R_f(CH₂CF₂)_p(CH₂CH₂)_q(R¹)_r-XH wherein p and q are each independently an integer of 1 to 3; r is 0 or 1; X is -O-, -NH- or -S-; R¹ is a divalent radical selected from the group consisting of -S(CH₂)_n-, formula (II), formula (III) and formula (IV); n is an integer of 2 to 4; s is an integer of 1 to 50; R², R³, and R⁴ are each independently hydrogen or an alkyl group containing 1 to 6 carbon atoms; and R_f is a linear or branched chain perfluoroalkyl group having 1 to 6 carbon atoms; and (i) reacting with (c) water, a linking agent, or a mixture thereof and methods for treating substrates to obtain surface effects is disclosed.