Preparation of modified star polymers and the use of such...

Details Preparation of modified star polymers and the use of such... Preparation of modified star polymers and the use of such...

C - Chemistry, Metallurgy

08

F

253/128, 400/305

C08F 285/00 (2006.01) C08F 287/00 (2006.01) C10M 143/10 (2006.01) C10M 149/10 (2006.01)

Patent

CA 2006111

Process for preparing a grafted star polymer which comprises contacting a nitrogen-containing polymerizable organic polar compound with a star polymer in the presence of a free radical polymerization initiator; characterised in that the reaction is carried out in a mineral oil solvent and, as coupling inhibitor, either a chain transfer agent, a pi-electron donor, or a comonomer, together with the modified, hydrogenated star polymers thus produced, and their use as luboil additives.

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