Patent ID: 7265178
Filing Date: 2007-09-04
Classification: C08F,C08G,C08L,C09D,C09J,Y10T

Abstract:
1. A polyurethane-polymer hybrid dispersion prepared by a process comprising the steps of: a) preparing a dispersion component or binder component based on an aqueous solution or dispersion of an optionally hydroxy- or amino-functional polyurethane-polymer hybrid having fluorinated or unfluorinated side chains, by a (i) 1 to 100 parts by weight of one or more unsaturated monomers (B)(i) having one or more free-radically polymerizable double bonds, selected from the group consisting of acrylic acid, methacrylic acid, styrene, and derivatives thereof, or (ii) 1 to 100 parts by weight of one or more unsaturated fluorine-modified monomers (B)(ii) having one or more free-radically polymerizable double bonds, selected from the group consisting of an alkyl (per)fluoro (meth)acrylate, a (per)fluoroalkyl (meth)acrylate a (per)fluoroalkyl (per)fluoro(meth)acrylate, a reaction product of 1-(1-isocyanato-1-methylethyl)-3-(2-propenyl)benzene (m-TMI) and a perfluoroalkyl alcohol, or (iii) 1 to 100 parts by weight of one or more unsaturated optionally fluorine-modified monomers (B)(iii) having one or more free-radically polymerizable double bonds, selected from the group consisting of polyhedral oligomeric polysilsesquioxanes (POSS) of the formula (RSiO with 0.01 to 10 parts by weight of an initiator component (C), comprising at least one lipophilic free-radical initiator having one or more thermally labile azo or peroxo groups, and 0 to 200 parts by weight of water, wherein the monomer component (B), the initiator component (C), and the water may optionally be metered in simultaneously, successively or as a mixture to the polyurethane base dispersion (A), and subsequently a and, optionally, b) subsequently reacting the dispersion or binder component formed from components (A) to (C) from stage a wherein component (A) is a polyurethane dispersion which contains as structural groups laterally fluorine-modified macromonomers based on a reaction product of a) a perfluoroalkyl alcohol, a diisocyanate, or diethanolamine, a perfluoroalkyl alcohol having terminal methylene groups of the formula wherein or a hexafluoropropene oxide (HFPO) oligomer alcohol of the formula, wherein or a mixture of thereof, or b) a perfluoroalkylalkene and diethanolamine, or a perfluoroalkylalkene having terminal a methylene group (hydrocarbon spacer) of the formula wherein x is from 3-20 or a mixture thereof, or c) an alkyl (per)fluoro(meth)acrylate, a (per)fluoroalkyl (meth)acrylate, a (per)fluoroalkyl (per)fluoro(meth)acrylate and diethanolamine, or d) a (per)fluoroalkylalkylene oxide N-methylethanolamine or diethanolamine.