Composition containing 3-glycidyloxypropylalkoxysilane oligomers, process for the production thereof and use thereof

US11091657B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Philipp Albert · Bad Kötzting, DE
• Julia Kirberg · Rheinfelden (Baden), DE
• Dennis Bringmann · Weil am Rhein, DE
• Dominik Hitzler · Heubach, DE
• Eckhard Just · Rheinfelden (Baden), DE

Key dates

• Filing date: Jun 5, 2019
• Grant date: Aug 17, 2021
• Expiry date: Jul 5, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/5435
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A composition contains a mixture of 3-glycidyloxypropylalkoxysilane oligomers in a proportion of ≥60% by weight based on the composition, which is storage stable over at least 8 weeks at a storage temperature of 60° C., has a colour number of ≤20 mg Pt—Co/l, a pH of not less than 3.5 to not more than 6.5 and a monomer proportion of silane employed in the production of the composition of not more than 5 mol % based on the molar proportion of Si in the composition, wherein the proportion of epoxy groups bound in Si compounds and present in the composition is not less than 95 mol % based on the molar proportion of Si in the composition.