Patent ID: 6756072
Filing Date: 2004-06-29
Classification: C08G,C09D,Y10S

Abstract:
A multicomponent composition, wherein the composition is one of a coating material, an adhesive, and a sealing compound, comprising(A) at least one (meth)acrylate copolymer having an OH number from 130 to 200, a glass transition temperature of from âˆ’35 to +60Â° C., a number-average molecular weight of from 1,000 to 5,000 daltons and a mass-molecular weight of from 2,000 to 20,000 daltons, which contains, based on the (meth)acrylate copolymer (A), up to 90% by weight of hydroxyl-containing, olefinically unsaturated monomers (a) in copolymerized form, of which (a1) from 20 to 90% by weight, based on the (meth)acrylate copolymer (A), are at least one of hydroxybutyl (meth)acrylate and 2-alkylpropane-1,3-diol mono(meth)acrylate, and (a2) 0 to 40% by weight, based on the (meth)acrylate copolymer (A), are other hydroxyl-containing, olefinically unsaturated monomers, and (B) at least one adduct prepared from (b1) at least one diisocyanate and (b2) at least one compound of the general formula I having an isocyanate-reactive functional group: wherein:R1 and R2, independently of one another, are hydrogen or an alkyl radical having 1 to 10 carbon atoms; X and Y, independently of one another, are oxygen, sulfur, or a radical >Nâ€”R6, in which R6 is an aliphatic radical having 1 to 30 carbon atoms, whose carbon chain may be interrupted by one or more oxygen atoms, or is an aromatic group having 6 to 30 carbon atoms; R3 is an alkylene radical having 1 to 5 carbon atoms; and R4 and R5, independently of one another, are hydrogen, an isocyanate-reactive functional group, or R6; with the proviso that i) one radical R4, R5, or R6 contains an isocyanate-reactive functional group, or ii) one radical R4 or R5 is an isocyanate-reactive functional group, in which case the other radicals R4, R5, or R6, where present, contain no isocyanate-reactive functional group; the molar ratio of isocyanate groups in the at least one diisocyanate (b1) to the isocyanate-reactive functional group in the compound 1 is from 0.8:1.2 to 1.2:0.8.