Mixture of oligomers of condensed alkylalkoxysilanes

US5932757A · kind A · utility

Assignee

• Huls Aktiengesellschaft · DE

Inventors

• Burkhard Standke · Soest, DE
• Roland Edelmann · Wehr, DE
• Albert-Johannes Frings · Rheinfelden (Baden), DE
• Michael Horn · Rheinfelden (Baden), DE
• Peter Jenkner · Rheinfelden (Baden), DE
• Ralf Laven · Niederdossenbach, DE
• Jaroslaw Monkiewicz · Rheinfelden (Baden), DE
• Lothar Elfenthal · Bocholt, DE
• Hans-Hermann Luginsland · Leverkusen, DE

Key dates

• Filing date: Jun 17, 1997
• Grant date: Aug 3, 1999
• Expiry date: Jun 17, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D183/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A mixture of oligomers of alkylalkoxysilanes condensed in the chain and/or cyclic form, said mixture of oligomers containing less than 2% by weight of free alcohols and the condensed alkoxysilanes satisfying formula I: ##STR1## wherein R is an alkyl group having 3 to 18 carbon atoms, and each R' is a member (i) selected from the group consisting of methyl, ethyl or hydrogen, or is (ii) methyl or hydrogen, or is (iii) ethyl or hydrogen, the degree of oligomerization being in the range 2.ltoreq.x.ltoreq.20 and the quotient of the molar ratio Si/alkoxy group!.gtoreq.1; and/or PA1 satisfying formula II: ##STR2## in which R is an alkyl group having 3 to 18 carbon atoms, and each R' is a member (i) selected from the group consisting of methyl, ethyl or hydrogen, or is (ii) methyl or hydrogen or is (iii) ethyl or hydrogen, the degree of oligomerization being x.gtoreq.3 and the quotient of the molar ratio Si/alkoxy group!.gtoreq.1.