Oil-in-water emulsion comprising at least one lubricating additive

US6486102B1 · kind B1 · utility

Assignee

• Unisor · FR

Inventors

• Herve Derule · Metz, FR
• Hubert Jacobs · Thionville, FR
• Amadou Dicko · Metz, FR
• Peggy Guinet · Yutz, FR

Key dates

• Filing date: Sep 28, 2001
• Grant date: Nov 26, 2002
• Expiry date: Sep 28, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2050/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An emulsion used to lubricate the surface of a steel sheet, comprising an additive corresponding to one of the following formulae: (R1-2—O—)1-2—PSS—(CH2)n—COO—(CH2)m—CH3, (R1-2—O—)1,2—PSS—CH2-&phgr;-O—H, (R1,2—O—)1,2—PSS—CH2-&phgr;-O—(CH2)n, —COO—(CH2)m, —CH3, where PSS designates a dithiophosphate function. The naked sheets of steel that are treated with said emulsion have very good tribological properties even when the density of the emulsion thus applied is less than or equal to 1 g/m2 when dry. The invention enables dry-looking oiled sheets to be obtained, whereby no re-oiling is required before forming even by die stamping.