Global Patent Index - EP 0277729 B1

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EP 0277729 B1 19920311 - LUBRICANT COMPOSITIONS PROVIDING WEAR PROTECTION AT REDUCED PHOSPHORUS LEVELS

Title (en)

LUBRICANT COMPOSITIONS PROVIDING WEAR PROTECTION AT REDUCED PHOSPHORUS LEVELS

Publication

EP 0277729 B1 19920311 (EN)

Application

EP 88300500 A 19880121

Priority

US 600487 A 19870121

Abstract (en)

[origin: EP0277729A1] An additive composition suitable for blending passenger car and heavy duty oils comprising (a) zinc dialkyldithiophosphate having both primary and secondary character such the primary to seconary ratio is about 1:1 to about 5:1, said zinc dialkyldithiophosphate being present in an amount such that a lubricating oil containing an effective amount of the additive composition will have a phosphorus level not greater than about 0.1 wt%; (b) a succinimide dispersant; and (c) a total base number such that a lubricating oil containing an effective amount of the additive composition will have a TBN of at least 8.

IPC 1-7

C10M 163/00; C10N 10/04; C10N 30/06; C10N 40/00; C10N 60/14

IPC 8 full level

C10M 163/00 (2006.01)

CPC (source: EP)

C10M 133/52 (2013.01); C10M 137/10 (2013.01); C10M 159/16 (2013.01); C10M 159/22 (2013.01); C10M 159/24 (2013.01); C10M 163/00 (2013.01); C10M 2207/028 (2013.01); C10M 2207/262 (2013.01); C10M 2215/04 (2013.01); C10M 2215/042 (2013.01); C10M 2215/064 (2013.01); C10M 2215/086 (2013.01); C10M 2215/24 (2013.01); C10M 2215/26 (2013.01); C10M 2215/28 (2013.01); C10M 2217/042 (2013.01); C10M 2217/043 (2013.01); C10M 2217/046 (2013.01); C10M 2217/06 (2013.01); C10M 2219/046 (2013.01); C10M 2219/087 (2013.01); C10M 2219/088 (2013.01); C10M 2219/089 (2013.01); C10M 2223/045 (2013.01); C10M 2227/061 (2013.01); C10N 2010/04 (2013.01); C10N 2040/25 (2013.01); C10N 2040/251 (2020.05); C10N 2040/252 (2020.05); C10N 2040/253 (2020.05); C10N 2040/255 (2020.05); C10N 2040/28 (2013.01)

Citation (examination)

EP 0206748 A2 19861230 - CHEVRON RES [US]

Designated contracting state (EPC)

BE DE FR GB IT NL

DOCDB simple family (publication)

EP 0277729 A1 19880810; EP 0277729 B1 19920311; DE 3868949 D1 19920416

DOCDB simple family (application)

EP 88300500 A 19880121; DE 3868949 T 19880121