......DE....FRGB........NL......................................................R0700986EUROPEAN PATENT APPLICATIONA319960410EP95202464.419950911enenen94202610 19940909EP19960410199615199603131996116 6C 10M 119/02 A 6C 10M 119/02 J 6C 10M 119:02 J 6C 10N 20:04 Z 6C 10N 50:10 Z 6C 10N 70:00 Z // (C10M119/02, 119:02), C10N20:04, C10N50:10, C10N70:00deMit Polymer verdicktes SchmierfettenPolymer thickened lubricating greasefrGraisse lubrifiante épaissie à l'aide de polymèreNONESKF Industrial Trading & Development Co, B.V.00210383BO 39457Kelvinbaan 16NL-3439 MT NieuwegeinNLMeijer, DickFaustlaan 10NL-3438 ET NieuwegeinNLJacobson, Bo OlovFröbellaan 12NL-3706 TG ZeistNLLankamp, HermanVan Zijldreef 18NL-3971 GX BunnikNLde Bruijn, Leendert C.00019641Nederlandsch Octrooibureau P.O. Box 29720NL-2502 LS Den HaagNLDEFRGBNL19960410199615

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 ≧ 200,000 and (2) a low molecular weight (co- or homo-)polymer of propylene with a weight average molecular weight ≦ 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.