Functional fluids and concentrates containing associative polyether thickeners and certain metal dialkyldithiophosphates
US4626366A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1984 |
| Grant date | Dec 2, 1986 |
| Priority date | — |
| Expiry date | Jan 6, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/01
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to functional fluid concentrates and functional fluids which can be prepared by mixing the concentrates with water. The functional fluids can be used in hydraulic systems or as metalworking compositions to cool and lubricate surfaces which are in frictional contact during operations such as the turning, cutting, peeling, or grinding of metals. The functional fluid concentrate comprises: PA0 (a) a cloud point raising metal dialkyldithiophosphate additive having the following structural formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are individually linear or branched alkyl, alkenyl, aryl, arylalkyl and alkylaryl groups having from 1 to 24 carbon atoms; and M is selected from the group consisting of Zn, Sb, Sn, Mg, and Mn; preferably Zn or Sb; PA0 (b) a polyether nonionic surfactant; and PA0 (c) an associative polyether thickener. Preferably the concentrate also contains a linear or branched alkanolamine having 2 to 10 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.