Curable benzoxazine macromonomers, their preparation and cured products

US8168743B2 · kind B2 · utility

Assignees

• Henkel AG & Co. KGaA · DE
• Henkel Limited

Inventors

• Andreas Taden · Goldkronach, DE
• Ursula Tenhaef · Goldkronach, DE
• Stefan Kreiling · Düsseldorf, DE
• Rainer Schoenfeld · Goldkronach, DE
• Stanley L. Lehmann · Martinez, US

Key dates

• Filing date: Apr 23, 2010
• Grant date: May 1, 2012
• Expiry date: Jul 27, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J179/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a curable benzoxazine macromonomer containing at least 3 benzoxazine rings and at least one aliphatic, heteroaliphatic, araliphatic, hetereoaraliphatic, aromatic or heteroaromatic fragment, the fragment comprising a shortest atom chain containing at least 40 consecutive atoms between two benzoxazine nitrogen atoms or between two benzoxazine oxygen atoms, and said atom chain must not include any oxazine ring atoms (“soft fragment”). The invention further relates to cured products made thereof and a method or producing the same.