C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 222/14 (2006.01) C08F 210/14 (2006.01) C10M 107/28 (2006.01) C10M 143/08 (2006.01) C10M 145/16 (2006.01) C10M 169/04 (2006.01)
Patent
CA 2158740
The invention pertains to a lubricant or lubricant additive having a viscosity ranging from 200 to 1100 cSt which at the same time is compatible with non-polar base fluids such as poly(.alpha.-olefins), and which comprises a copolymer of an .alpha.-olefin having of from 8 to 18 carbon atoms and a fumaric diester having an aliphatic alcohol as the esterifying component, the copolymer having a weight average molecular weight above approximately 3500, and the esterifying component being C8 to C10 alcohol (linear or branched) or iso-C13 alcohol. Also disclosed is a process for the preparation of the copolymers wherein an .alpha.-olefin having of from 8 to 18 carbon atoms is reacted with a fumaric diester under the influence of a peroxide radical initiator having tertiary alkyl groups while applying a temperature of from 110 ° C to 150 ° C.
Macherey Heribert Josef
Wallfahrer Uwe Hans
Akzo Nobel N.v.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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