Multifunctional aqueous lubricant based on dithiodiglycolic acid
US6355604B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 17, 2001 |
| Grant date | Mar 12, 2002 |
| Priority date | — |
| Expiry date | May 17, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/01
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The multifunctional aqueous lubricant according to the invention comprises at least one water-soluble salt of dithiodiglycolic acid and at least one water-soluble compound chosen from the group consisting of:a) phosphoric esters of general formula:  in which R represents an alkyl, alkenyl or alkylaryl radical having from 6 to 20 carbon atoms, k is equal to 2 or 3, m is a number ranging from 0 to 20 and x is equal to 1 or 2, and their salts, andb) water-soluble salts of alkylthio acids of general formula:R′—S—(CH2)n—COOH  (II) in which n is a number ranging from 1 to 10 and R′ represents an alkyl, alkenyl or aryl radical having from 6 to 20 carbon atoms, the ratio by mass of dithiodiglycolic acid to compound(s) I and/or II being between 1/1 and 50/1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.