Process for preparing 3-glycidyloxypropyltrialkoxysilanes

US10464954B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Markus Rudek · Büttelborn, DE
• Susann Witzsche · Rheinfelden (Baden), DE
• Stefan Bade · Rheinfelden (Baden), DE
• Claudia Drescher · Soest, DE
• Burkhard John · Rheinfelden (Baden), DE
• Torsten Peterle · Weil am Rhein, DE

Key dates

• Filing date: Aug 8, 2018
• Grant date: Nov 5, 2019
• Expiry date: Aug 8, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/1804
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process can prepare a 3-glycidyloxypropylalkoxysilane of formula (I), (R′)O—(CH2)3—Si(OR)3 (I), where R groups are independently a methyl or ethyl group and R′ represents an H2C(O)CHCH2— group. The process includes reacting (i) a functionalized alkene of formula (II), (R′)O—C3H5 (II), where R′ represents an H2C(O)CHCH2— group, with (ii) at least one hydroalkoxysilane of formula (III), HSi(OR)3 (III), where R groups are independently a methyl or ethyl group. The reacting takes place in the presence of (iii) a Karstedt catalyst or a catalyst having hexachloroplatinic acid as a homogeneous catalyst, and (iv) 2-ethylhexanoic acid, isononanoic acid, or both. The process further includes obtaining a product of the reacting.