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Lubricating oils having improved friction stability

专利摘要

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基本信息

专利类型:
发明专利
申请/专利号:
AU2008202852
申请日期:
2008-06-27
专利申请人:
英菲诺姆国际有限公司
分类号:
["C10M","C10M137/00","C10M141/06","C10M133/02","C10M133/04","C10M141/10","C10N40/04","C10M149/22","C10M169/04","C10N"]
发明/设计人:
COGEN, KERRY L. ， GORDA, KEITH R. ， NOLES JR., JOE R. ， WATTS, RAYMOND F.
权利要求: THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS: 1. A lubricating oil composition comprising a base lubricating oil, at least one oil soluble phosphorus containing compound and at least one polyalkylene polyamine-based friction modifier comprising at least one hydrocarbyl substituent wherein the, or each, hydrocarbyl substituent comprises between 6 and 30 carbon atoms, and wherein at least one secondary amino group present in the polyamine chain of the friction modifier has been acylated to the corresponding amide group. 2. A composition comprising : (a) a major amount of a base lubricating oil; and (b) a friction stability improving effective amount of an additive combination comprising: (i) at least one friction modifier comprising the reaction product of an acylating agent R3COX (wherein R; is a hydrocarbyl group and X is a leaving group) with one or more compounds selected from the group of compounds (1), (I1y and (111), where (1), (ll}, and (ll) are represented by the structures : wherein R is a Cg to Cap alkyl or alkenyl group; R¢ is a polyalkylene polyamine group represented by structure (IV): (IV) wherein n and m are each independently integers from 1 to 6; and R; is an alkyl or aryl group or their heteroatom containing derivatives, or is selected from the structures V, VI and VII below : and Cu, —R1 gr” TNH W) vn (VID) (i) at least one oil-soluble phosphorus-containing compound. 3. The composition according to claim 2 wherein the friction modifier (b)(i) comprises the reaction product represented by one or more of the structures (VII), (IX) and (X) : (VII) (X) wherein R, Rg, Rs, n and m are as defined in claim 2 and wherein p + q =m, with the proviso thatp 2 1. 4. The composition according to claim 1 wherein the composition is a power transmission fluid. 5. An additive composition comprising a friction modifier comprising at least one hydrocarbyl substituent wherein the, or each, hydrocarbyl substituent comprises between 6 and 30 carbon atoms, and wherein at least one secondary amino group present in the polyamine chain of the friction modifier has been acylated to the corresponding amide group in combination with an oil soluble phosphorus containing compound. 6. The composition according to claim § wherein the phosphorus compound is an ester of phosphoric or phosphorous acid. 7. A method of imparting friction stability to lubricating oils, comprising adding a friction modifier comprising at least one hydrocarbyl substituent wherein the, or each, hydrocarbyl substituent comprises between 6 and 30 carbon atoms, and wherein at least one secondary amino group present in the polyamine chain of the friction modifier has been acylated to the corresponding amide group to a lubricating oil.