EP 0323087 A1 19890705 - Improved overbased magnesium sulphonate.

Title (en)

Improved overbased magnesium sulphonate.

Title (de)

Überbasische Magnesium-Sulfonate.

Title (fr)

Sulfonate de magnésium superbasique.

Publication

EP 0323087 A1 19890705 (EN)

Application

EP 88311966 A 19881216

Priority

GB 8730227 A 19871229
GB 8806973 A 19880323

Abstract (en)

Overbased magnesium sulphonates are treated with a dicarboxylic acid or anhydride, or a reaction product with an amine, alcohol, amino-alcohol or mixtures thereof, optionally in combination with an alcohol, to give increased resistance to interactions. Compositions comprising such overbased magnesium sulphonate, particularly in combination with high molecular weight dispersants and/or friction modifiers, provide stable sediment-free lubricating oil compositions which can meet the proposals for SG quality and the Tier II fuel economy requirements.

IPC 1-7

C10M 159/24; C10M 163/00; C10M 167/00; C10N 10/02; C10N 30/04; C10N 60/00

IPC 8 full level

C10M 159/20 (2006.01); C10M 159/24 (2006.01); C10M 163/00 (2006.01); C10M 165/00 (2006.01); C10N 10/02 (2006.01); C10N 10/04 (2006.01); C10N 30/04 (2006.01); C10N 30/10 (2006.01); C10N 40/25 (2006.01)

CPC (source: EP)

C10M 129/76 (2013.01); C10M 129/93 (2013.01); C10M 129/95 (2013.01); C10M 133/52 (2013.01); C10M 137/10 (2013.01); C10M 159/24 (2013.01); C10M 163/00 (2013.01); C10M 2207/123 (2013.01); C10M 2207/129 (2013.01); C10M 2207/22 (2013.01); C10M 2207/287 (2013.01); C10M 2207/288 (2013.01); C10M 2207/289 (2013.01); C10M 2207/34 (2013.01); C10M 2215/04 (2013.01); C10M 2215/24 (2013.01); C10M 2215/26 (2013.01); C10M 2217/046 (2013.01); C10M 2217/06 (2013.01); C10M 2219/046 (2013.01); C10M 2223/045 (2013.01); C10M 2227/061 (2013.01); C10N 2010/02 (2013.01); C10N 2010/04 (2013.01); C10N 2040/25 (2013.01); C10N 2040/251 (2020.05); C10N 2040/255 (2020.05); C10N 2040/28 (2013.01); C10N 2070/02 (2020.05)

Citation (search report)

[X] DE 2014880 A1 19701001
[A] EP 0041851 A2 19811216 - EXXON RESEARCH ENGINEERING CO [US]
[A] EP 0096539 A2 19831221 - EXXON RESEARCH ENGINEERING CO [US]
[A] EP 0212922 A2 19870304 - EXXON CHEMICAL PATENTS INC [US]

Designated contracting state (EPC)

BE DE FR GB IT NL

DOCDB simple family (publication)

EP 0323087 A1 19890705; BR 8806938 A 19890829; JP H01245095 A 19890929

DOCDB simple family (application)

EP 88311966 A 19881216; BR 8806938 A 19881228; JP 33075488 A 19881227