润滑科技信息平台

机械工程学会摩擦学分会固体润滑国家重点实验室摩擦学学报

用于控制钢腐蚀的低灰润滑组合物

专利摘要

本公开描述了实现通过钢腐蚀、通过高温沉积物形成和乳液稳定性的低灰分润滑组合物。该润滑组合物包括一种或多种选择的腐蚀或防锈化学物质,其具有带有酸性、羟基或胺部分但不含亚胺、酰亚胺和/或脒部分的油溶性无环结构。 ......

基本信息

专利类型:
发明专利
申请/专利号:
EP2023214518
申请日期:
2023-12-06
专利申请人:
分类号:
["C10M129/42","C10M129/70","C10M129/72","C10M129/74","C10M133/08","C10M133/16","C10N30/02","C10N30/00","C10N30/04","C10N40/04","C10N40/08","C10N40/25","C10N30/12"]
发明/设计人:
GARELICK, KENNETH
权利要求: 1. A low-ash lubricating oil composition suitable for use in lubricating the engine of a passenger car, the low-ash lubricating oil composition including one or more base oils of lubricating viscosity; a total sulfated ash (SASH) of about 0.5 weight percent or less; about 0.03 to about 0.2 weight percent of one or more acyclic corrosion inhibitors having an acidic, hydroxy, or amine moiety thereof and being substantially free of compounds including imine, imide, amidine structural units or hydroxy derivatives thereof.2. A low-ash lubricating oil composition suitable for use in lubricating the engine of a passenger car, the low-ash lubricating oil composition including one or more base oils of lubricating viscosity; a total calculated sulfated ash (SASH) of about 0.5 weight percent or less; up to about 0.3 weight percent of an acyclic corrosion inhibitor including one or more oil-soluble acids, diacids, acid-esters, or combinations thereof having a C6 or greater hydrocarbyl chain and being substantially free of compounds having imine, imide, amidine structural units or hydroxy derivatives thereof.3. The low-ash lubricating oil composition of claim 2, wherein the lubricating oil composition includes about 0.02 to about 0.3 weight percent of the acyclic corrosion inhibitor.4. The low-ash lubricating oil composition of any one of claims 1 to 3, wherein the lubricating oil composition exhibits a stable emulsion at 0°C and/or 25°C pursuant to the E85 emulsion test of ASTM D7563 and no steel corrosion pursuant to the humidity corrosion test of GMW 16073.5. The low-ash lubricating oil composition of any one of claims 1 to 4, wherein the one or more acyclic corrosion inhibitors includes an oil-soluble acid, diacid, acid-ester, polyol, amide, or mixtures thereof; preferably wherein the one or more acyclic corrosion inhibitors include a C6 or greater hydrocarbyl chain.6. The low-ash lubricating oil composition of any one of claims 1 to 5, further comprising up to about 100 ppm of boron.7. The low-ash lubricating oil composition of any one of claims 1 to 6, wherein the lubricating oil composition has about 10 ppm or less of calcium, magnesium, or combinations thereof; preferably wherein the lubricating oil composition is substantially free of a metallic detergent.8. The low-ash lubricating oil composition of any one of claims 1 to 7, wherein the lubricating oil composition has about 10 ppm or less of zinc; preferably wherein the lubricating oil composition is substantially free of a metal dialkyldithiophosphate.9. The low-ash lubricating oil composition of any one of claims 1 to 8, wherein the acyclic corrosion inhibitor is selected from (a) pentaerythritol mono-oleate, (b) N,N-dialkanol fatty amine, (c) C10 to C20 fatty amide, (d) C10 to C20 dicarboxylic acid, C10 to C20 acid-ester, or combinations thereof, or (e) condensation products of dodecenyl succinic acid or anhydride, or (f) mixtures thereof.10. The low-ash lubricating oil composition of claim 9, wherein the acyclic corrosion inhibitor is one or more compounds having the structure of Formula I: wherein each of R1 and R2 is, independently, selected from -OH or -OR4OH with at least one of R1 and R2 being -OH; R3 is a linear or branched C6 to C20 hydrocarbyl group; and R4 is a linear or branched C1 to C4 hydrocarbyl group with the -OH thereof being a primary or secondary alcohol.11. The low-ash lubricating oil composition of claim 10, wherein the acyclic corrosion inhibitor is a blend of an oil-soluble diacid and an oil-soluble acid-ester each having the structure of Formula I.12. The low-ash lubricating oil composition of any one of claims 1 to 11, wherein the lubricating oil composition further has about 30 mg or less, preferably about 15 mg or less of deposits when subjected to the high temperature deposit formation test of ASTM D6335.13. Use of the low ash lubricating composition according to any one of claims 1 to 12 for improving any one of steel corrosion and emulsion stability.14. Use of the low ash lubricating composition according to any one of claims 1 to 12 for maintaining a stable emulsion and reducing or eliminating rust in in lubricating the engine of a passenger car or in steel corrosion performance testing.