Sealant and adhesive

US5266145A · kind A · utility

Assignee

• Teroson GmbH · DE

Inventors

• Edward W. Duck · Leimen, DE
• Ingolf Scheffler · Wiesloch, DE

Key dates

• Filing date: Jun 16, 1992
• Grant date: Nov 30, 1993
• Expiry date: Jun 16, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2200/0625
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

One-component, moisture-hardening sealants and adhesives contain telechelic isocyanate prepolymers obtainable by reacting diisocyanates and/or polyisocyanates in stoichiometric excess with polyester polyols, polyether polyols and hydroxy-functional (meth) acrylate prepolymers, as well as conventional plasticizers, the polyester polyols having branches, more particularly formed by alkyl radicals containing no functional groups. The polyester polyols can either be obtained by reacting corresponding branched diols and/or dicarboxylic acids or by subsequent grafting of side groups on to straight-chain polyester polyols. The sealants and adhesives are transparent or translucent, have a high ageing stability and excellent mechanical characteristics.