Use of an oligomer-based additive for stabilizing a lubricating composition for a conveyor chain

US8492321B2 · kind B2 · utility

Assignee

• NYCO S.A. · FR

Inventors

• Gerard Goujon · Conflans-Sainte-Honorine, FR
• Florence Severac · Gargenville, FR
• Marc Borel-Garin · Paris, FR

Key dates

• Filing date: Oct 7, 2009
• Grant date: Jul 23, 2013
• Expiry date: Feb 4, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/38
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The use of an additive including a mixture of oligomers that is produced from the reaction of aromatic amines chosen from:(i) the reaction with one another of diphenylamine (DPA) compounds of formula (I) below:wherein the groups R1 and R2 stand for, independently of one another, a hydrogen or a linear or branched alkyl group having from 1 to 30 carbon atoms, advantageously from 4 to 12 carbon atoms,(ii) the reaction with one another of phenyl-α-naphthylamine (PAN) compounds of formula (II) below:wherein the group R3 stands for a hydrogen or a linear or branched alkyl group having from 1 to 30 carbon atoms, advantageously from 4 to 12 carbon atoms, and(iii) the reaction of a (DPA) compound of formula (I) above with a (PAN) compound of formula (II) above as an agent for the stabilization of a lubricating composition for a conveyor chain subjected to a temperature of at least 120° C.