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US 4,163,731 AGranted
Fire resistant functional fluid compositions based on phosphate esters and substituted aromatic compounds
AssigneeCiba-Geigy Corporation
InventorsDonald R. Randell, Thomas G. Hyde, Frank Lamb, Brian G. Clubley, William D. Phillips
Life of this patent
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Abstract
Functional fluid composition comprising an ester of a phosphorus acid and a compound of the formula I r(ch.sub.2 x).sub.n (I) in which R represents an aromatic hydrocarbon or heterocyclic containing residue, n is an integer of at least 2, and each X is the same or different and represents a leaving group, which composition may be used for a wide variety of purposes, for example in hydraulic machinery employed in foundries and mines, in hydraulic systems for aircraft, in turbines and as fluids in electrical equipment and in heat transfer devices.
Claims16
A functional fluid composition comprising
- (a) a phosphorus acid ester of formula II ##STR16## in which m is an integer from 0 to 3,
- R.sub.4, r.sub.5 and R.sub.6, which may be the same or different, are hydrogen, alkyl having 1 to 9 carbon atoms, cycloalkyl having 6 to 12 carbon atoms, haloalkyl having 1 to 9 carbon atoms, but excluding halomethyl, said haloalkyl groups containing one or more chlorine atoms, chloro, aryl having 6 to 10 carbon atoms or aralkyl having 7 to 12 carbon atoms, and
- R.sub.3 is alkyl having 1 to 16 carbon atoms or haloalkyl containing one or more chlorine atoms;
- and
- (b) a compound of formula I
- r(ch.sub.2 x).sub.n (I)
- in which
- R represents an aromatic hydrocarbon or aromatic heterocyclic containing residue,
- n is an integer of at least 2, and
- each X is the same or different and represents halo, OH, SH, NH.sub.2, COOH, PO.sub.3 H.sub.2, OB(OH).sub.2, OR.sup.1, SR.sup.1, NHR.sup.1, NR.sup.1 R.sup.2, OB(OR.sup.1) (OR.sup.2), ##STR17## where Y, Y.sup.1 and Y.sup.2 are independently --O--, --NH--, --NR.sup.1 --, --S-- or a direct bond,
- Z is hydrogen, R.sup.1, OR.sup.1, SR.sup.1, NH.sub.2, NHR.sup.1, NR.sup.1 R.sup.2 or a direct bond linking ##STR18## to R or to a CH.sub.2 attached to R, W is O, S, NH or NR.sup.1,
- L is O, S or is absent,
- M is O, S or is absent, and
- R.sup.1 and R.sup.2 are independently a straight or branched chain alkyl having 1 to 12 carbon atoms, alkenyl having 2 to 12 carbon atoms, alkynyl having 2 to 12 carbon atoms, cycloalkyl having 5 to 12 carbon atoms, cycloalkenyl having 5 to 12 carbon atoms, aralkyl having 7 to 12 carbon atoms, araalkenyl having 7 to 12 carbon atom or alkaryl having 7 to 12 carbon atoms.
11 more elements
A functional fluid composition comprising
- (a) a phosphorus acid ester of formula II ##STR21## in which m is an integer from 0 to 3.
- R.sub.4, r.sub.5 and R.sub.6, which may be the same or different, are hydrogen, alkyl having 1 to 9 carbon atoms, cycloalkyl having 6 to 12 carbon atoms, haloalkyl having 1 to 9 carbon atoms, but excluding halomethyl, said haloalkyl groups containing one or more chlorine atoms, chloro, aryl having 6 to 10 carbon atoms or aralkyl having 7 to 12 carbon atoms, and
- R.sub.3 is alkyl having 1 to 16 carbon atoms or haloalkyl containing one or more chlorine atoms;
- and
- (b) an oligomer of the formula
- (A).sub.a (--CH.sub.2 --).sub.b [--CH.sub.2 (OCH.sub.2).sub.e OCH.sub.2 --].sub.c (--CH.sub.2 X).sub.d
- wherein
- A is at least one aromatic hydrocarbon or aromatic heterocyclic residue, X is OH, OB(OH).sub.2, OR.sup.1, OB(OR.sup.1)(OR.sup.2), ##STR22## where Y, Y.sup.1 and Y.sup.2 are O, Z is hydrogen, R.sup.1, OR.sup.1, SR.sup.1, NH.sub.2, NHR.sup.1, NR.sup.1 R.sup.2 or a direct bond linking ##STR23## to A or to a CH.sub.2 attached to A, W is O, S, NH or NR.sup.1,
- L is O, S or is absent,
- M is O or is absent, and
- R.sup.1 and R.sup.2 are independently a straight or branched chain alkyl having 1 to 12 carbon atoms, alkynyl having 2 to 12 carbon atoms, cycloalkenyl having 5 to 12 carbon atoms, aralkyl having 7 to 12 carbon atoms, aralkenyl having 7 to 12 carbon atoms or aralkyl having 7 to 12 carbon atoms,
- a is 2 to 20, but equals b+c+1,
- b is 0 to 19,
- c is 0 to 19,
- e is 0 to 10, and
- d is 0 to 2a, but with the proviso that when c is 0, d must be at least 2, and when c is 1, d must be at least 1, so that thereare at least two (--CH X) groups per molecule, the (--CH.sub.2 OCH.sub.2 --) group counting as (--CH.sub.2 X) for this purpose.
13 more elements
Dependencies are inferred from the claim text.