US 4,954,275 AGranted

Use of phenol-mercaptocarboxylic acid esters as stabilizers for lubricants

AssigneeCiba-Geigy Corporation

InventorsSiegfried Rosenberger, Kurt Schwarzenbach

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Abstract

The phenol-mercaptocarboxylic acid esters used for stabilizing elastomers are those of the formula ##STR1## wherein R is C.sub.1 -C.sub.18 alkyl.

Claims3

Dependent claims

A lubricant composition comprising mineral oil or synthetic oil or mixture thereof and an effective stabilizing amount of a compound of the formula ##STR20## wherein R is C.sub.8 -C.sub.13 alkyl.

Dependencies are inferred from the claim text.

Facts

Application: 06/932,431Filed 19 Nov 1986 · division
Priority: CH 1107/81Not available
Granted: 4 Sep 1990
Term ends: Not estimatedThe source records don’t support an estimate.

Classification62 codes

C10M 135/26
Containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms: containing carboxyl groups; Derivatives thereof
C07C 323/00
Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms
C08K 5/375
Thiols: containing six-membered aromatic rings
C10M 2203/006
Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions: used as thickening agents

Family

Serial347,399Parent of this continuation-in-part · filed 10 Feb 1982
Serial919,605Parent of this division · filed 14 Oct 1986
US 4,954,275 AThis patent

From the US filing history. Foreign family members aren’t listed.

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