Process for preparing glass constructions

US4433010A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Josef Pedain · Cologne, DE
• Wolfgang Wellner · Bensberg, DE
• Klaus Konig · Leverkusen, DE
• Hermann Gruber · Leverkusen, DE

Key dates

• Filing date: Dec 30, 1982
• Grant date: Feb 21, 1984
• Expiry date: Dec 30, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2200/0652
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The instant invention is directed to a process for the preparation of glass constructions comprising applying to glass, compositions comprising PA1 (a) a polyisocyanate component and PA1 (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.-hydroxycaproic 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 80 to 130, or compositions comprising PA1 (c) an isocyanate prepolymer based on said polyols, optionally present in admixture with other polyisocyanates, and optionally PA1 (d) free- or blocked-diamine chain-lengthening agents.