Patent ID: 8816000
Filing Date: 2014-08-26
Classification: A61K,A61Q,C08G,C09D,C11D,D06M

Abstract:
1. Coatings having a contact angle hysteresis of water of no more than 20°, measured by the tilting plate method and producible from a mixture comprising at least two different stellate prepolymers and/or stellate prepolymer-nanoparticle complexes, self-crosslinking and crosslinking with the surface of the substrate to be coated, wherein the stellate prepolymers and/or stellate prepolymer-nanoparticle complexes have at least three hydrophilic polymer arms prior to crosslinking, wherein each arm is separately water-soluble and has silyl end groups R wherein R a is hydrogen or a linear or branched alkyl group with one to six carbon atoms, OR b is a hydrolyzable group, R c is a linear or branched alkyl group with one to six carbon atoms, and r is 1 or 2, whereby the silyl end groups R wherein polymer arms not having silyl end groups R with the provision that the mixture contains: (a) at least one stellate prepolymer having three to five hydrophilic polymer arms and (b) at least one stellate prepolymer having at least six hydrophilic polymer arms and/or a stellate prepolymer-nanoparticle complex having at least six hydrophilic polymer arms.