Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Solid hydrocarbon polymer
Patent
1995-09-11
1999-02-23
Gibson, Sharon
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Solid hydrocarbon polymer
585 10, 585 12, C10M14304
Patent
active
058743910
ABSTRACT:
The present invention relates to a polymer thickener for lubricant grease compositions, wherein the thickener comprises a mixture of (1) a high molecular weight (co- or homo-)polymer of propylene with a weight average molecular weight .gtoreq.200,000 and (2) a low molecular weight (co- or homo-)polymer of propylene with a weight average molecular weight .ltoreq.100,000. The invention further relates to a lubricating grease composition comprising a lubricating oil and the above polymeric thickener, as well as a method for preparing said grease composition. Also, the invention relates to the use of such a polymer thickener in the preparation of lubricating grease compositions with improved oil bleeding characteristics at low temperature and improved noise characteristics and/or improved mechanical stability.
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Lankamp Herman
Meijer Dick
Gibson Sharon
SKF Industrial Trading & Development Company B.V.
Toomer Cephia D.
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