Hydraulic fluids comprising orthosilicate esters
US4051053A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Apr 22, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
As novel compounds, orthosilicate esters having the general formula: ##STR1## wherein R.sup.1 is a propylene glycol monoalkyl ether residue containing from 1 to 8 carbon atoms in the terminal alkyl group or is a tertiary alkyl group; each of R.sup.2, R.sup.3 and R.sup.4 is the same or different and is an ethylene or propylene glycol monoalkyl ether residue containing from 1 to 8 carbon atoms in the terminal alkyl group or is a tertiary alkyl group, provided that when R.sup.1 is a propylene glycol monoalkyl ether residue each of R.sup.2, R.sup.3 and R.sup.4 are also propylene glycol monoalkyl ether residues; the total number of carbon atoms in R.sup.1, R.sup.2, R.sup.3 and R.sup.4 being at least 15 and at least one of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 being a glycol monoalkyl ether residue. Also disclosed are hydraulic fluids containing the novel compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.