PROCESS FOR PREPARING GLASS CONSTRUCTIONS

摘要

PROCESS FOR PREPARING GLASS CONSTRUCTIONS The instant invention is directed to a process for the preparation of glass constructions comprising applying to glass, compositions comprising a) a polyisocyanate component and b) a polyol component comprising at least one dihydroxy polyester carbonate with a molecular weight of from 800 to 3000 which is a reaction product of hexanediol-(1,6) with .epsilon.-caprolactone and/or .epsilon.-hydroxy-caproic acid, in a molar ratio of hexanediol-(1,6) to .epsilon.-caprolactone and/or .epsilon.-hydroxycaproic acid of from 4:1 to 1:3, and diaryl carbonates, which reaction product is optionally present as a mixture with up to 40% by weight, based on the total quantity of said polyol component, of other polyols with molecular weights of from 62 to 4000, optionally containing ester groups, the quantities of the said components corresponding to an isocyanate index of from 0.8 to 1.3, or compositions comprising c) an isocyanate prepolymer based on said polyols, optionally present in admixture with other polyisocyanates, and optionally d) free- or blocked-diamine chain-lengthening agents.