Nitrogen-containing heterocyclic epoxy curing agents, compositions and methods

US10556985B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Shiying Zheng · Webster, US
• Sudhir Ananthachar · Fryeburg, US
• Shafiq Fazel · Allentown, US
• Michael Ian Cook · De Meern, NL
• Robert Marjo Theodoor Rasing · Didam, NL
• Wei Cao · Shanghai, CN
• Edze Jan Tijsma · Eijsden, NL

Key dates

• Filing date: Nov 4, 2016
• Grant date: Feb 11, 2020
• Expiry date: Nov 4, 2036

Classification

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

Abstract

Amine-epoxy curing agents are disclosed including at least one saturated heterocyclic compound having two nitrogen heteroatoms according to formula (I) and at least one saturated fused bicyclic heterocyclic compound having three nitrogen heteroatoms according to formula (II): wherein X is independently selected from a hydrogen atom, a linear or branched C1 to C4 alkyl group and a substituted or un-substituted phenyl group, Y1 is a direct bond or a divalent polyethylene polyamine group having 1 to 8 nitrogen atoms or a divalent polyethylene polyamine derivative having 1 to 8 nitrogen atoms, Y2 is a direct bond or a divalent polyethylene polyamine group having 1 to 7 nitrogen atoms and R is independently a hydrogen atom or a group selected from C1-C8 linear, cyclic, and branched alkyl, alkenyl, and alkaryl groups.