| 摘要 |
An anti-soiling treating agent comprising (a) a perfluoroalkyl-containing hybrid urethane compound (I) resulting from the addition reaction of two perfluoroalkyl-containing alcohols which have a difference in melting point of at least 20 DEG C. and are selected from compounds of the following formula Rf-A-B-OH wherein Rf represents a linear or branched perfluoroalkyl group, A is the group -CH2-l in which l is an integer of 0 to 5, the group <IMAGE> in which R is a hydrogen atom, an alkyl group having not more than 12 carbon atoms or a substituted alkyl group, the group <IMAGE> in which R is as defined above, a phenylene group, an ether linkage, or an ester linkage, and B represents an alkylene or aralkylene group having not more than 12 carbon atoms, or a derivative thereof containing an ether linkage, the mole ratio between the two alcohols being 33-67:67-33, with a polyisocyanate, or (b) a composition comprising the perfluoroalkyl-containing hybrid urethane compound (I) and a fluorine-free vinyl polymer (II) having a Rockwell hardness of 90 to 130, or (c) a composition comprising the perfluoroalkyl-containing hybrid urethane compound (I) and a perfluoroalkyl-containing vinyl polymer (III), or (d) a composition comprising the perfluoroalkyl-containing hybrid urethane compound (I), the perfluoroalkyl-containing vinyl polymer (III) and the fluorine-free vinyl polymer (II), and if desired, water and/or an organic solvent.
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