Hydraulic fluids comprising orthosilicate esters

Details Hydraulic fluids comprising orthosilicate esters Hydraulic fluids comprising orthosilicate esters

1979-10-10

1981-08-04

Weinblatt, Mayer

Compositions

Heat-exchange, low-freezing or pour point, or high boiling...

Organic components

556483, C07F 704, C09K 300

Patent

active

RE0306983

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.

REFERENCES:
patent: 3308149 (1967-03-01), Schenk et al.
patent: 3320297 (1967-05-01), Pino et al.
patent: 3806549 (1974-04-01), Foley
Emblem et al., J. Inorg. Nucl. Chem., 30, 721-727 (1968).

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