Process for preparing glycidyloxyalkyltrialkoxysilanes

US8039646B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Stefan Bade · Rheinfelden (Baden), DE
• Beate Seliger · Hamburg, DE
• Norbert Schladerbeck · Kelkheim, DE
• Joerg Sauer · Rodenbach, DE

Key dates

• Filing date: Dec 20, 2007
• Grant date: Oct 18, 2011
• Expiry date: Nov 6, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/0829
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing glycidyloxy-alkylalkoxysilanes of the general formula (I) (R″)O—CnH2nSi(R′)m(OR)3-m(I) in which R and R′ groups are each independently linear or branched alkyl groups having from 1 to 4 carbon atoms, n is 1, 2, 3, 4, 5, 6, 7 or 8 and m is 0, 1, 2 or 3, and R″ is an H2C(O)CH— or H2C(O)CHCH2— group, by reacting (i) a functionalized alkene of the general formula (II) (R″)O—CnH2n-1(II) in which R″ is an H2C(O)CH— or H2C(O)CHCH2— group and n is 1, 2, 3, 4, 5, 6, 7 or 8 with (ii) at least one hydroalkoxy-silane of the general formula (III) HSi(R′)m(OR)3-m (III) in which R and R′ groups are each independently linear or branched alkyl groups having from 1 to 4 carbon atoms and m is 0, 1, 2 or 3, in the presence (iii) of at least one homogeneous catalyst, (iv) of at least one solvent and/or of a diluent and (v) of at least one promoter.