Patent ID: 6905540
Filing Date: 2005-06-14
Classification: B29C,C08G

Abstract:
1. A polyorganosiloxane comprising siloxyl units: D: R optionally M: R with R corresponding to hydrogen or to substituted or unsubstituted hydrocarbon-based radicals which are identical or different; wherein: at least some of the radicals R correspond to the definitions below: R=W representing a radical comprising at least 8 and preferably from 8 to 50 carbon atoms and bearing at least one lubricating organophilic function, and R=Y representing a radical bearing at least one attachment function capable of forming hydrogen bonds and/or ionic interactions with a metal support; said polyorganosiloxane having residual units D OH which are identical or different, in each of which one of the radicals R is OH and the other radical R is a C1-C3 alkyl, with the further proviso that: the polyorganosiloxanes (I) comprise at least one siloxyl unit D′ substituted with a radical of formula:  with R′ independently being a monovalent hydrocarbon group free of ethylenic unsaturation and x between 1 and 20; and the polyorganosiloxanes (I), wherein at least one of the radicals W or Y comprises at least one perfluoroalkyl unit, are being excluded.