Curable epoxy resins

US4405765A · kind A · utility

Assignee

• BASF SE

Inventors

• Kurt Demmler · Ludwigshafen, DE
• Wolfram Ochs · Monsheim, DE

Key dates

• Filing date: Aug 30, 1982
• Grant date: Sep 20, 1983
• Expiry date: Aug 30, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G59/68
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A curable resin is composed of PA0 A. an epoxy resin and PA0 B. a pyrylium salt as a catalyst, with or without PA0 C. a metal chelate or metal salt as a co-catalyst. Preferred pyrylium salts are those of the formula ##STR1## Preferred co-catalysts are acetylacetonates, stearates, benzoates, naphthenates, octoates or phthalates of Cu.sup.++, Co.sup.++, Co.sup.+++, Fe.sup.+++ or Al.sup.+++. The resin compositions may be used to produce coatings and moldings.