Title (en)

Lubricants and functional fluids having enhanced foam-inhibiting properties.

Title (de)

Erhöhte schaumhemmende Eigenschaften besitzende Schmiermittel und funktionelle Flüssigkeiten.

Title (fr)

Lubrifiants et fluides fonctionnels ayant des propriétés inhibitrices de mousse.

Publication

EP 0529161 A1 19930303 (EN)

Application

EP 91307806 A 19910823

Priority

EP 91307806 A 19910823

Abstract (en)

Enhanced foam-inhibition properties result from a lubricant or functional fluid composition which comprises a base oil of lubricating viscosity having included therein a foam-inhibiting amount of a combination of (i) up to 50 ppm of a silicone oil having a viscosity above 1000 cP at 20 DEG C, and (ii) up to 25 ppm of metal as alkali and/or alkaline earth metal phenate.

IPC 1-7

C10M 161/00; C10M 169/04

IPC 8 full level

C10M 161/00 (2006.01); C10M 165/00 (2006.01); C10M 171/00 (2006.01)

CPC (source: EP)

C10M 129/10 (2013.01); C10M 135/28 (2013.01); C10M 155/02 (2013.01); C10M 159/22 (2013.01); C10M 161/00 (2013.01); C10M 165/00 (2013.01); C10M 171/004 (2013.01); C10M 2203/10 (2013.01); C10M 2207/023 (2013.01); C10M 2207/026 (2013.01); C10M 2207/027 (2013.01); C10M 2207/028 (2013.01); C10M 2207/262 (2013.01); C10M 2219/086 (2013.01); C10M 2219/087 (2013.01); C10M 2219/088 (2013.01); C10M 2219/089 (2013.01); C10M 2229/02 (2013.01); C10M 2229/04 (2013.01); C10M 2229/041 (2013.01); C10M 2229/042 (2013.01); C10M 2229/043 (2013.01); C10M 2229/044 (2013.01); C10M 2229/045 (2013.01); C10M 2229/046 (2013.01); C10M 2229/047 (2013.01); C10M 2229/048 (2013.01); C10M 2229/05 (2013.01); C10M 2229/051 (2013.01); C10M 2229/052 (2013.01); C10M 2229/053 (2013.01); C10M 2229/054 (2013.01); C10N 2020/01 (2020.05); C10N 2070/02 (2020.05)

Citation (search report)

• [X] US 2972579 A 19610221 - DELFEL NORMAN E
• [Y] US 3213024 A 19651019 - DUANE BLAKE GILBERT, et al
• [X] EP 0037186 A2 19811007 - EXXON RESEARCH ENGINEERING CO [US]
• [X] US 3436348 A 19690401 - CHAO TAI S, et al
• [X] CH 587339 A5 19770429 - TENNECO CHEM
• [X] US 4131551 A 19781226 - THOMPSON JERRY L, et al
• [A] US 3450636 A 19690617 - RAUSCH MAURICE K
• [A] US 2435124 A 19480127 - BOLLINGER LOREN C
• [A] US 2993856 A 19610725 - HEISIG THEODORE C, et al

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0529161 A1 19930303

DOCDB simple family (application)

EP 91307806 A 19910823