Patent ID: 8022161
Filing Date: 2011-09-20
Classification: C08G,C08L

Abstract:
1. A surface treatment composition consisting essentially of a perfluoropolyether-polyorganosiloxane copolymer and/or a partial condensate of hydrolyzates thereof; a solvent; and optionally 0.01 to 5 parts by weight of a hydrolysis and condensation catalyst selected from the group consisting of organic tin compounds and organic titanium compounds, per 100 parts by weight of the perfluoropolyether-polyorganosiloxane copolymer and/or the partial condensate of hydrolyzates thereof; wherein a concentration of the perfluoropolyether-polyorganosiloxane copolymer and/or the partial condensate of hydrolyzates thereof is in the range of from 0.01 to 50 wt %, wherein the perfluoropolyether-polyorganosiloxane copolymer comprising at least one perfluoropolyether block, at least one polyorganosiloxane block which may have a silalkylene group, and two monovalent groups represented by the following formula (1), each one at both ends of the copolymer, wherein X is a hydrolyzable group, R said copolymer having a number average molecular weight, reduced to polystyrene, of from 7,000 to 25,000; wherein a backbone of the perfluoropolyether-polyorganosiloxane copolymer is represented by the following formula (2) wherein Rf represents the perfluoropolyether block, W represents the linear polyorganosiloxane block, Q is a C wherein silicon atoms are contained in an amount of from 3 to 30 wt %, based on a weight of the perfluoropolyether-polyorganosiloxane copolymer.