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Lubricating oil compositions having improved sludge dispersancy

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:
US3600327DA
申请日期:
1969-02-26
专利申请人:
埃克森研究工程公司
分类号:
["C10M159/00","C10M159/12","C10M1/38"]
发明/设计人:
SHIH-EN HU
权利要求: The invention having now been fully described and illustrated, what is desired to be secured by Letters Patent is:1. A mineral lubricating oil composition containing a sludge inhibiting amount of an oil-soluble sulfurized product prepared by reacting elemental sulfur, at a temperature of between about 215° and about 255° C., with a compound selected from the group consisting of: (1) homopolymers of C3 to Ci8 alpha monoolefins, and (2) copolymers of C2 to C18 alpha monoolefins with a different C3 to C30 alpha monoolefin and thereafter reacting said sulfurized compound with an amino compound selected from the group consisting of primary, secondary, and tertiary mono, di, and poly aliphatic amines.2. A mineral lubricating oil composition as in claim 1 wherein the compound reacted with elemental sulfur is a homopolymer of a C3 to Ci8 alpha monoolefin and the amino compound is a polyalkylene polyamine.3. A mineral lubricating oil composition as in claim 2 wherein the compound reacted with elemental sulfur is poly isobutylene and the amino compound is tetraethyl pentamine.4. A mineral lubricating oil composition as in clai wherein the compound reacted with elemental sulfi polyisobutylene of between about 400 and about 150 number average -molecular weight.5. A mineral lubricating oil composition as in clai wherein the amount of sulfurized compound-amine r tion product is between about 0'.05 and about 10.0 percent based on the weight of the oil composition, the composition also contains as an antiwear addi the zinc salt of a dialkyl dithiophosphate.6. A mineral lubricating oil composition as in clai wherein the amount of sulfurized compound-amine r tion product is between about 0.05 and about 10.0 wt. cent based on the weight of the oil composition and composition also contains as an antiwear additive, the salt of di(C4-C5 alkyl) dithiophosphate.7. A mineral lubricating oil as in claim 4 wherein wherein the amount of sulfurized compound-amine r tion product is between about 0.05 and about 10.0 wt. cent based on the weight of the oil composition and composition also contains as an antiwear additive, the salt of di(C4—C5 alkyl) dithiophO'Sphate.