Amine-modified epoxy resin reacted with polyisocyanate

US5977286A · kind A · utility

Assignee

• Vianova Resins AG · DE

Inventors

• Manfred Marten · Mainz, DE
• Claus Godau · Kiedrich, DE

Key dates

• Filing date: Jul 11, 1997
• Grant date: Nov 2, 1999
• Expiry date: Jul 11, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G59/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Epoxy resin compositions containing polyepoxides having at least two 1,2-epoxide groups are disclosed. The polyepoxides can be obtained by reacting (i) di- or polyepoxides or mixtures thereof with monoepoxides, (ii) one or more amines chosen from sterically hindered amines, disecondary diamines and diprimary diamines to form an epoxide-amine adduct, and (iii) subsequently reacting the epoxide-amine adduct with polyfunctional isocyanates. The composition also contains curing agents for the polyepoxides and can optionally contain additional 1,2-epoxide compounds and additives. The compositions are useful as coatings for bridging cracks, as adhesives and as constituents of paints.