Greases prepared from organosiloxanes with SiC-bonded groups

US4405469A · kind A · utility

Assignee

• Consortium fur elekochemische Ind. GmbH · DE

Inventors

• Walter Hafner · Fürth, DE
• Erich Markl · Munich, DE
• Ludwig Eibel · Munich, DE
• Gerhard Kreis · Burghausen, DE
• Dietrich Samrowski · Munich, DE
• Manfred Wick
• Bernward Deubzer · Burghausen, DE
• Wilhelm Friedrich · Munich, DE

Key dates

• Filing date: Jul 27, 1981
• Grant date: Sep 20, 1983
• Expiry date: Jul 27, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/46
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to organosiloxanes which have SiC-bonded ester groups and contain at least one unit of the general formula: ##EQU1## is which R represents the same or different monovalent hydrocarbon radicals having from 1 to 12 carbons atoms, which are free of aliphatic unsaturation and which may contain one ether oxygen atom; R' represents hydrogen or a methyl group (CH.sub.3) and a is O, 1 or 2. These organosiloxanes can be prepared by hydrolyzing or co-hydrolyzing silanes of the general formula: EQU ROOCCH.sub.2 CH(COOR)CH.sub.2 CHR'CH.sub.2 Si(CH.sub.3).sub.a X.sub.3-a' where R, R' and a are the same as above and X represents the same or different hydrolyzable atoms or groups. Also, they may be prepared by the addition of a diester of allyl succinic acid and/or methallyl succinic acid to an organosiloxane containing Si-bonded hydrogen. These new organosiloxanes may be used as lubricants for inorganic and organic fibers, metal surfaces and as hydraulic fluids.