Global Patent Index - EP 1236792 A1

EP 1236792 A1 2002-09-04 - Use of overbased detergent additives to suspend asphaltene compounds

Title (en)

Use of overbased detergent additives to suspend asphaltene compounds

Title (de)

Verwendung überbasischer Detergentien zum suspendieren von Asphaltenen

Title (fr)

Utilisation d' additifs détergents superbasiques pour mettre des composés d'asphaltene en suspension

Publication

EP 1236792 A1 (EN)

Application

EP 02075506 A

Priority

  • EP 02075506 A
  • EP 01301406 A

Abstract (en)

Oil-soluble overbased salicylate-phenate detergent additives comprising a complex in which the basic material of the detergent is stabilised by both salicylate and phenate surfactants. The mass % of the salicylate, as a percentage of the total surfactant mass, is at least 50, preferably greater than 50, provided that, when said mass % is less than 60, the TBN: mass % surfactant ratio of the detergent is 10 or less.

IPC 1-7 (main, further and additional classification)

C10M 159/22; C10M 159/20

IPC 8 full level (invention and additional information)

C10M 159/22 (2006.01); C10M 159/20 (2006.01)

CPC (invention and additional information)

C10M 159/22 (2013.01); C10M 2207/028 (2013.01); C10M 2207/262 (2013.01); C10M 2219/089 (2013.01); C10N 2240/102 (2013.01); C10N 2240/103 (2013.01)

Combination set (CPC)

  1. C10M 2207/028 + C10M 2207/028
  2. C10M 2207/262 + C10M 2207/262
  3. C10M 2219/089 + C10M 2219/089

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family

EP 1236792 A1 20020904; EP 1236792 B1 20070103