Aqueous self-dispersible epoxy resin based on epoxy-amine adducts

US5874490A · kind A · utility

Assignee

• Henkel Limited

Inventors

• Kartar S. Arora · Doylestown, US
• John G. Papalos · Ledgewood, US
• Grannis S. Johnson · Haneys Mill, US

Key dates

• Filing date: Oct 30, 1996
• Grant date: Feb 23, 1999
• Expiry date: Oct 30, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D163/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

There is disclosed a self-dispersing curable epoxy resin composition comprising the addition product of reactants comprising (a) 1.0 reactive equivalent of an epoxy resin, (b) from about 0.40 to 0.95 reactive equivalents of a polyhydric phenol, and (c) from about 0.005 to 0.5 reactive equivalents of an amine-epoxy adduct comprising the addition product of reactants comprising 1.0 reactive equivalent of a polyepoxide and from about 0.3 to 0.9 reactive equivalents of a polyoxyalkyleneamine with the structural formula EQU H.sub.2 N--CH(R.sub.2)CH.sub.2 --O--R.sub.1 --CH.sub.2 CH(R.sub.2)--NH.sub. 2 wherein: PA1 R.sub.1 represents a polyoxyalkylene chain having the structural formula: EQU (CH.sub.2 --CH.sub.2 --O).sub.a --(CH.sub.2 --CH(R.sub.3)--O).sub.b wherein: PA1 R.sub.3 is a monovalent organic radical selected from the group consisting of C.sub.1 to C.sub.4 aliphatic hydrocarbons, PA1 `a` designates a number of ethoxy groups (CH.sub.2 --CH.sub.2 --O), PA1 `b` designates a number of monosubstituted ethoxy groups (CH.sub.2 --CH(R.sub.3)O), the sum of `a` and `b` is equal to or greater than 10 but less than or equal to 300, and where the ratio of `a` to `b` is between 1:0 and 1:1. F…