Patent ID: 8697799
Filing Date: 2014-04-15
Classification: C08G,C08L,C09D

Abstract:
1. Non-aqueous, liquid coating compositions which contain organic solvents, at least one polyurethane resin B with blocked isocyanate groups and at least one binder C with functional groups reactive towards the blocked isocyanate groups, wherein the at least one polyurethane resin B is present as particles having a melting temperature of 40 to 160° C., and wherein the at least one polyurethane resin B is a polyurethane with two blocked isocyanate groups per molecule which can be prepared by reacting a diisocyanate component, a diol component and at least one monofunctional blocking agent selected from the group consisting of CH-acidic compounds; aliphatic alcohols; cycloaliphatic alcohols; glycol ethers; phenols; oximes; lactams; azole blocking agents of the imidazole, pyrazole, triazole, or tetrazole type; and a combination thereof, in the molar ratio of diisocyanate:diol:monofunctional blocking agent of x: (x−1):2, wherein x is a variable number and means any value from 2 to 6, wherein 50to 80 mol % of the diisocyanate component is formed by 1,6-hexane diisocyanate, and 20 to 50 mol % by one or two diisocyanates, each forming at least 10 mol % of the diisocyanate component and being selected from the group consisting of toluylene diisocyanate, diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate, isophorone diisocyanate, trimethylhexane diisocyanate, cyclohexane diisocyanate, cyclohexanedimethylene diisocyanate and tetramethylenexylylene diisocyanate, wherein the mol % of the respective diisocyanates add up to 100 mol %, wherein 20to 100 mol % of the diol component is formed by at least one linear aliphatic alpha,omega-C2-C12-diol, and 0 to 80 mol % by at least one diol that is different from linear aliphatic alpha,omega-C2-C12-diols, wherein the mol % of the respective diols add up to 100 mol %.