Hydraulic fluid compositions
US4093554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1975 |
| Grant date | Jun 6, 1978 |
| Priority date | — |
| Expiry date | Mar 26, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel compounds useful in hydraulic fluid compositions as additives, as base stock or as members of a blended base stock are glycol-substituted aryl silanes of the formula: ##STR1## wherein: (A) R is aryl; PA1 (b) X is selected from the group consisting of ##STR2## in which each R.sub.2 is defined above, R' is as hereinafter defined, each R.sup.2 is independently selected from the group consisting of hydrogen, methyl and ethyl, R.sup.3 is alkyl, R.sup.4 is selected from the group consisting of diol and polyol residues, R.sup.6 is selected from the group consisting of aryl and alkyl, and n is an integer; and PA1 (c) each R' is, independently selected from the group consisting of groups of formula (A) as defined above, alkyl, aryl, and groups of the formula: -- O -- R.sup.5 wherein R.sup.5 is alkyl and if the glycol-substituted aryl silane contains more than one group R.sup.5 they may be the same or different; provided that the glycol-substituted arylsilane contains at least one group selected from the group consisting of ##STR3## WHEREIN R.sup.2, R.sup.4 and n are as defined above. The new silanes may be made from chlorosilanes by various condensation methods or by transesterificati…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.