Oxazolidinone- and isocyanurate-crosslinked matrix for fiber-reinforced material

US10689476B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Christian Holtgrewe · Goldkronach, DE
• Harald Küster · Goldkronach, DE
• Thomas Bachon · Düsseldorf, DE
• Andreas Ferencz · Goldkronach, DE
• Olaf Lammerschop · Krefeld, DE
• Rainer Schönfeld · Mülheim an der Ruhr, DE
• Claudia Mai · Goldkronach, DE

Key dates

• Filing date: Jun 14, 2017
• Grant date: Jun 23, 2020
• Expiry date: Jun 14, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a method for producing a cured composition, which has at least one oxazolidinone ring and at least one isocyanurate ring and is crosslinked thereby, starting from a liquid reaction mixture comprising: (a) at least one liquid, aromatic epoxy resin; (b) at least one liquid, aromatic polyisocyanate; and (c) a catalyst composition; relative to the at least one polyisocyanate, the at least one epoxy resin is used in amounts such that the molar equivalent ratio of epoxide groups to isocyanate groups is at least 0.4; and curing the reaction mixture to give a cured polymer composition comprising at least one oxazolidinone ring and at least one isocyanurate ring, and also to the cured compositions obtainable by these methods.