| 摘要 |
<p>Surface coating has breaking strain > 1000% preferably > 1900%; surface adherence ("tack") < 95 Jm<-2>, preferably < 85 Jm<-2>; and contact angle with water droplet >90 degrees , preferably of 100-120 degrees . Also claimed are latex used to provide said coating; and method for treating surface with said latex. Preferably coating comprises 70-98 wt.% units from one or more monomer of type (A) selected from e.g. (meth)acrylic esters, (meth)acrylic acids, acrylamides, vinyl derivatives and styrene derivatives; and preferably 2-30 wt.% one or more monomers of type (B) selected from polyfluorinated monomers (B1) with basic formula CH2=C(R1)-C(O)-O-X-R2 in which R1 = H or 1-4C alkyl, R2 = 1-16C perfluoroalkyl, and X = bivalent chain containing e.g. one or more atoms of sulphur, oxygen and/or nitrogen which is linked to O by a carbon atom; and (meth)acrylic monomers (B2) with general formula CH2=C(R1)-C(O)-O-R3 in which R3 = preferably 18-24C alkyl.</p> |
