US 5,328,627 AGranted

Fire resistant hydraulic fluids

AssigneeElf Atochem North America, Inc.

InventorsJoseph M. Bohen, Paul Tubbs

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Abstract

Fire resistant hydraulic fluid compositions comprising (a) one or more esters of polyhaloaromatic acids per se or in combination with (b) one or more hydraulic fluids independently selected from mineral oil, poly-.alpha.-olefins, alkylated aromatics, cycloaliphatics, esters of dibasic acids, polyol esters, polyglycols, silicones, silicate esters, phosphate esters, and halogenated compositions other than (a); a method for imparting fire resistant properties to known hydraulic fluids by adding one or more esters of polyhaloaromatic acids alone or combined; and the use of the inventive compositions as fire resistant hydraulic fluids. The fire resistant compositions may, optionally, contain one or more shear-stable polymers which have been found to increase the fire resistance of the hydraulic fluid composition.

Claims26

Dependent claims

A hydraulic fluid composition comprising a fire-resistant imparting or improving effective amount of a halophthalate ester of the formula:

##STR92## wherein:
(a) the rings can have all possible arrangements;
(b) R is substituted or unsubstituted C.sub.1-30 alkyl, hydroxy C.sub.2-20 alkyl, polyhydroxy C.sub.3-10 -alkyl, or ##STR93## where R.sup.2 and R.sup.8 are as defined below, and b is 1 to 50;
(c) R.sup.1 is H, branched or linear substituted or unsubstituted C.sub.1-30 alkyl or unsaturated C.sub.2-22 alkyl, or ##STR94## and R.sup.7 is as defined below, (d) R.sup.2 is, independently, H or CH.sub.3 ;
(e) R.sup.3 and R.sup.4 are, independently, H, C.sub.1-18 alkyl, halogen substituted C.sub.1-18 alkyl, --OH, --OR.sup.5, or ##STR95## (f) R.sup.5 is C.sub.1-22 alkyl;
(g) R.sup.6 is H or C.sub.1-22 alkyl;
(h) R.sup.7 is C.sub.1-18 alkyl, polyhydroxy C.sub.3-12 alkyl, ##STR96## or --(CHCN).sub.3 N;
(i) R.sup.8 is branched or linear substituted or unsubstituted C.sub.1-18 alkyl;
(j) R.sup.9 is H or C.sub.1-22 alkyl;
(k) R.sup.10 is H, ##STR97## where B and m are defined below;
(l) R.sup.12 is H or C.sub.1-22 alkyl;
(m) R.sup.13 is H or C.sub.1-22 alkyl;
(n) A is Cl or Br;
(o) B is halogen, OR.sup.5, or ##STR98## (p) X is O or NH;
(q) m is 1 to 5;
(r) p is 0 or an integer of 1 to 50;
(s) q is an integer of 1 to 6;
(t) r is from more than 0.1 to 50;
and
(u) is 1 to 4
wherein the hydraulic fluid is one or more of:
(A) mineral oils;
(B) poly-.alpha.-olefins;
(E) esters of dibasic acids;
(G) polyol esters;
(J) organohalides other than esters of a halogen substituted aromatic acid.

23 more elements

A method for imparting or improving fire resistant properties of one or more hydraulic fluids comprising adding to said fluid(s) a fire resistant imparting or improving amount of at least one fire resistant halophthalate ester wherein the halophthate ester is a compound of the formula ##STR99## wherein:

(a) the rings can have all possible isomeric arrangements;
(b) R is substituted or unsubstituted C.sub.1-30 alkyl, hydroxy, C.sub.2-20 alkyl, polyhydroxy C.sub.3-10 alkyl, or ##STR100## wherein R.sup.2 and R.sup.3 are as defined below, and b is 1 to 50;
(c) R.sup.1 is H, branched, or linear substituted or unsubstituted C.sub.1-30 alkyl or unsaturated C.sub.2-22 alkyl, or ##STR101## and R.sup.7 is as defined below, (d) R.sup.2, independently, is H or CH.sub.3 ;
(e) R.sup.3 and R.sup.4 are, independently, H, C.sub.1-18 alkyl, halogen substituted C.sub.1-18 alkyl, --OH, --OR.sup.5, or ##STR102## (f) R.sup.5 is C.sub.1-22 alkyl;
(g) R.sup.6 is H or C.sub.1-22 alkyl;
(h) R.sup.7 is C.sub.1-18 alkyl, polyhydroxy C.sub.3-12 alkyl, ##STR103## (i) R.sup.8 is branched or linear substituted or unsubstituted C.sub.1-18 alkyl;
(j) R.sup.9 is H or C.sub.1-22 alkyl;
(k) R.sup.10 is H, --CR.sup.5, or ##STR104## where B and m are defined below:
(l) R.sup.12 is H or C.sub.1-22 alkyl;
(m) R.sup.13 is H or C.sub.1-22 alkyl;
(n) A is Cl or Br;
(o) B is halogen, OR.sup.5, or ##STR105## (p) X is O or NH;
(q) m is 1 to 5;
(r) p is 0 or an integer of 1 to 50;
(s) q is an integer of 1 to 6;
(t) r is from more than 0.1 to 50;
and
(u) u is 1 to 4.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/508,744Filed 12 Apr 1990 · continuation in part
Priority: 14 Oct 1988
Granted: 12 Jul 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification33 codes

C10M 105/54
Containing halogen: containing carbon, hydrogen, halogen and oxygen
C08K 5/12
Esters; Ether-esters: of cyclic polycarboxylic acids
C10M 111/00
Lubrication compositions characterised by the base-material being a mixture of two or
C10M 131/12
Containing carbon, hydrogen, halogen and oxygen: acids; Salts or esters thereof