Hardener for epoxy resins comprising reaction products of polyamidoamines, secondary polyamines and epoxy-polyol adducts

US5319004A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Manfred Marten · Mainz, DE
• Bernhard Stengel-Rutkowski · Wiesbaden, DE
• Claus Godau · Kiedrich, DE

Key dates

• Filing date: Feb 26, 1993
• Grant date: Jun 7, 1994
• Expiry date: Feb 26, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L79/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Hardeners for epoxy resins, comprising reaction products of PA1 (A) polyamidoamines that were obtained by polycondensation of (a) dicarboxylic acids containing oxyalkylene groups, or their derivatives, with (b) polyamines containing at least two amino groups capable of undergoing condensation with (a), PA1 (B) polyamines containing at least two secondary amino groups, and PA1 (C) adducts of (c) polyepoxy compounds and (d) polyalkylene polyether polyols. Epoxy resins that have been cured with these hardeners exhibit in particular a very good water resistance.