Acryloxypropyl- or methacryloxypropyl-functional siloxane oligomers

US6133466A · kind A · utility

Assignee

• Degussa-Huels AG · DE

Inventors

• Roland Edelmann · Wehr, DE
• Albert-Johannes Frings · Rheinfelden (Baden), DE
• Michael Horn · Rheinfelden (Baden), DE
• Peter Jenkner · Rheinfelden (Baden), DE
• Ralf Laven · Niederdossenbach, DE
• Helmut Mack · Ludwigshafen, DE
• Jaroslaw Monkiewicz · Rheinfelden (Baden), DE
• Wolfgang-Wilhelm Orlia · Tönisvorst, DE
• Burkhard Standke · Soest, DE

Key dates

• Filing date: Aug 2, 1999
• Grant date: Oct 17, 2000
• Expiry date: Aug 2, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D183/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Mixtures of catenate and cyclic siloxane oligomers of formula I and II ##STR1## wherein the substituents R consist of 3-methacryloxypropyl or 3-acryloxypropyl groups and methoxy, ethoxy and/or propoxy groups alone or together with C.sub.1 -C.sub.18 alkyl, fluoroalkyl, isoalkyl or cycloalkyl groups and/or C.sub.6 -C.sub.12 aryl groups and where not more than one 3-methacryloxypropyl or 3-acryloxypropyl group is attached to one silicon atom and the degree of oligomerization of compounds of the formula I is within the range 2<m<25 and of compounds of the formula II is within the range 2<n<8 and the quotient of the molar proportion of Si/alkoxy groups is .gtoreq.0.5.