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Lubricants comprising 2-hydroxyalkylamide friction modifying compositions

专利摘要

Lubricant compositions comprising an improved ashless organic friction modifier additive, capable of reducing both friction and wear, is provided. It has been found that mixtures of fatty-alkanolamides containing secondary hydroxyls on the amino alkyl substituent, such as amide mixtures prepared from bis(2-hydroxyporopyl)amine and mixtures of at least two different C8-24 fatty acids, provide better oil solubility and friction reduction than alkanolamides with primary hydroxyl functionality, such as amide mixtures prepared from di-ethanol)amine. ......

基本信息

专利类型:
发明专利
申请/专利号:
US13/795328
申请日期:
2013-03-12
专利申请人:
科聚亚公司
分类号:
["C10M133/16","C10M133/56"]
发明/设计人:
DEBLASE, FRANK J. ， CORBO, FAITH A.
权利要求: 1. A lubricant composition comprising:a) a major portion of a lubricating oil comprising one or more naturally occurring and/or synthetic base stocks, andb) from 0.5 to 1 wt % based on the total weight of the lubricant composition of a friction reducing/antiwear additive composition comprising a mixture of two or more fatty acid 2-hydroxyalkylamides of formula IIwherein R is methyl;and R′ is selected from C7-19 alkyl or alkenyl, whereinabout 20 to about 35% by weight of the 2-hydroxyalkylamides are compounds where R′ is C15 alkyl or alkenyl, wherein about 75% or more of said C15 alkyl or alkenyl are alkyl,about 50 to about 75% by weight of the 2-hydroxyalkylamides are compounds where R′ is C17 alkyl or alkenyl, wherein about 40% to about 95% of said C17 alkyl or alkenyl are alkenylwherein the mixture of two or more fatty acid 2-hydroxyalkylamides of formula II are prepared from a hydroxyalkylamine and a mixture of fatty acids or fatty acid esters with different alkylcarboxy chain lengths obtained from beef tallow.2. The lubricant composition according to claim 1, comprisinga) from about 90 to about 99.5 wt % of a natural or synthetic lubricating oil base stock,b) from 0.5 to 1 wt % based on the total weight of the lubricant composition, of the friction reducing/antiwear additive composition comprising a mixture of two or more fatty acid 2-hydroxyalkylamides of formula I, andc) one or more additional lubricant additives selected from the group consisting of dispersants, detergents, corrosion/rust inhibitors, antioxidants, other anti-wear agents, anti-foamants, other friction modifiers, seal swell agents, demulsifiers, V.I. improvers and pour point depressants,wherein the combined amount of b) and c) present in the composition is from about 0.5 to about 10 weight percent based on the total weight of the lubricant composition.