Patent ID: 6063863
Filing Date: 2000-05-16
Classification: C08G,C08L,C09D,C09J

Abstract:
An aqueous solution or dispersion of a composition comprisingA) a compound, which contains 0.5 to 15% by weight of alkoxysilane and/or silanol groups (calculated as Si, MW 28), based on the weight of the compound containing alkoxysilane groups, and is substantially free from isocyanate groups and chemically incorporated hydrophilic groups, wherein the alkoxysilane groups are initially incorporated by the reaction of a polyisocyanate comprising a monomeric polyisocyanate having aliphatically and/or cycloaliphatically bound isocyanate groups or a polyisocyanate adduct containing isocyanurate, uretdione, biuret, iminooxadiazine dione and/or allophanate groups with an amino compound corresponding to formula I ##STR4## wherein X represents identical or different organic groups which are inert to isocyanate groups below 100.degree. C., provided that at least one of these groups is an alkoxy group,Y represents a linear or branched alkylene group having 1 to 8 carbon atoms andR.sub.1 represents an organic group which is inert to isocyanate groups at a temperature of 100.degree. C. or less, andB) 1 to 20% by weight of colloidal silica, based on weight of the compound containing alkoxysilane groups.