Global Patent Index - EP 0537840 A1

EP 0537840 A1 19930421 - Lubricating compositions containing alkaline earth metal salts.

Title (en)

Lubricating compositions containing alkaline earth metal salts.

Title (de)

Erdalkalimetallsalze enthaltende Schmiermittelzusammensetzungen.

Title (fr)

Compositions lubrifiantes contenant des sels de métaux alcalins-terreux.

Publication

EP 0537840 A1 19930421 (EN)

Application

EP 92203077 A 19921005

Priority

EP 91309170 A 19911007

Abstract (en)

The invention provides a lubricating oil composition comprising a major proportion of a lubricating oil and a minor proportion of an alkaline earth metal salt selected from calcium and magnesium salts of a hydroxyalkyl sulphonic acid of the general formula: <CHEM> wherein each of R<1>, R<2>, R<3> and R4 independently represents a hydrogen atom, or a linear or branched alkyl group, subject to the total number of carbon atoms in R<1>, R<2>, R<3> and R4 taken together being in the range from 8 to 30; lubricating oil concentrates containing said salts; a process for preparing said composition; and the use of said salts as detergent additives in lubricating oil compositions.

IPC 1-7

C07C 309/08; C10M 135/10; C10M 159/24

IPC 8 full level

C10M 135/10 (2006.01); C10M 159/20 (2006.01); C10M 159/24 (2006.01); C10M 163/00 (2006.01); C10M 167/00 (2006.01); C10N 10/04 (2006.01); C10N 30/04 (2006.01); C10N 40/25 (2006.01)

CPC (source: EP)

C10M 135/10 (2013.01); C10M 137/10 (2013.01); C10M 145/10 (2013.01); C10M 159/20 (2013.01); C10M 159/22 (2013.01); C10M 159/24 (2013.01); C10M 167/00 (2013.01); C10M 2207/027 (2013.01); C10M 2207/028 (2013.01); C10M 2207/144 (2013.01); C10M 2207/146 (2013.01); C10M 2207/26 (2013.01); C10M 2207/262 (2013.01); C10M 2209/08 (2013.01); C10M 2209/084 (2013.01); C10M 2219/044 (2013.01); C10M 2219/046 (2013.01); C10M 2219/089 (2013.01); C10M 2223/045 (2013.01); C10N 2010/04 (2013.01); C10N 2070/02 (2020.05)

Citation (search report)

Designated contracting state (EPC)

BE DE FR GB IT NL

DOCDB simple family (publication)

EP 0537840 A1 19930421; EP 0537840 B1 19960717; CA 2079823 A1 19930408; DE 69212265 D1 19960822; DE 69212265 T2 19961212; JP H05239484 A 19930917

DOCDB simple family (application)

EP 92203077 A 19921005; CA 2079823 A 19921005; DE 69212265 T 19921005; JP 26601092 A 19921005