N,N′-diaminopropyl-2-methylcyclohexane-1,3-diamine and N,N′-diaminopropyl-4-methylcyclohexane-1,3-diamine and the use thereof as curing agents for epoxy resins

US10889683B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Christian Gruenanger · Mannheim, DE
• Alexander Panchenko · Ludwigshafen, DE
• Irene GORMAN · Ludwigshafen, DE
• Veit Stegmann · Mannheim, DE
• Johann-Peter Melder · Schifferstadt, DE
• Norbert Gutfrucht · Lambrecht, DE
• Martin Ernst · Ludwigshafen am Rhein, DE
• Marc Hofmann · Oldenburg, DE

Key dates

• Filing date: Dec 4, 2017
• Grant date: Jan 12, 2021
• Expiry date: Feb 13, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to the polyamines N,N′-diaminopropyl-2-methyl-cyclohexane-1,3-diamine and N,N′-diaminopropyl-4-methyl-cyclohexane-1,3-diamine and mixtures thereof, to the use thereof as curing agents for epoxy resin and to a curable composition comprising epoxy resin and these polyamines. Even at low temperatures this curing agent/the corresponding curable composition cures rapidly and is early-stage water resistant and is thus especially suitable for floor coatings. The invention further relates to the curing of this composition and the cured epoxy resin obtained by curing of this composition.