# US 5,334,319 A · Composition for hydraulic lubrication and coupling

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- Number: US 5,334,319 A
- Document ID: US5334319A
- Status: Granted
- Kind: A
- Application number: 07/984,254
- Filed: 1992-12-01
- Granted: 1994-08-02
- Earliest claimed: 1990-06-18
- Assignees: Tonen Corporation
- Inventors: Hirotaka Tomizawa; Noboru Umemoto; Hitoshi Ohenoki
- Web page: https://patentgrep.com/patent/US5334319A

## CPC

- C10M 169/04: Mixtures of base-materials and additives
- C10M 107/50: containing silicon
- C10M 129/14: containing at least 2 hydroxy groups
- C10M 133/06: having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M 133/12: having amino groups bound to a carbon atom of a six-membered aromatic ring
- C10M 133/44: Five-membered ring containing nitrogen and carbon only
- C10M 135/22: containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
- C10M 135/28: containing sulfur atoms bound to a carbon atom of a six-membered aromatic ring
- C10M 137/04: Phosphate esters
- C10M 137/10: Thio derivatives
- C10M 137/12: having a phosphorus-to-carbon bond
- C10M 2207/024: having at least two phenol groups but no condensed ring
- C10M 2207/026: with tertiary alkyl groups
- C10M 2207/123: polycarboxylic
- C10M 2207/125: having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M 2207/129: having hydrocarbon chains of thirty or more carbon atoms
- C10M 2207/14: having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M 2207/142: polycarboxylic
- C10M 2207/16: Naphthenic acids
- C10M 2207/22: Acids obtained from polymerised unsaturated acids
- C10M 2207/281: of (cyclo)aliphatic monocarboxylic acids
- C10M 2207/282: of (cyclo)aliphatic oolycarboxylic acids
- C10M 2207/283: of polyhydroxy compounds
- C10M 2207/286: of polymerised unsaturated acids
- C10M 2207/289: containing free hydroxy groups
- C10M 2215/04: having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M 2215/06: having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M 2215/062: containing hydroxy groups bound to the aromatic ring
- C10M 2215/064: Di- and triaryl amines
- C10M 2215/065: Phenyl-Naphthyl amines
- C10M 2215/066: Arylene diamines
- C10M 2215/067: Polyaryl amine alkanes
- C10M 2215/068: having amino groups bound to polycyclic aromatic ring systems, i.e. systems with three or more condensed rings
- C10M 2215/22: Heterocyclic nitrogen compounds
- C10M 2215/221: Six-membered rings containing nitrogen and carbon only
- C10M 2215/223: Five-membered rings containing nitrogen and carbon only
- C10M 2215/225: the rings containing both nitrogen and oxygen
- C10M 2215/226: Morpholines
- C10M 2215/26: Amines
- C10M 2215/30: Heterocyclic compounds
- C10M 2219/02: Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
- C10M 2219/022: of hydrocarbons, e.g. olefines
- C10M 2219/024: of esters, e.g. fats
- C10M 2219/062: having carbon-to-sulfur double bonds
- C10M 2219/068: Thiocarbamate metal salts
- C10M 2219/083: Dibenzyl sulfide
- C10M 2219/086: containing sulfur atoms bound to carbon atoms of six-membered aromatic rings
- C10M 2219/10: Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M 2219/102: containing sulfur and carbon only in the ring
- C10M 2219/104: containing sulfur and carbon with nitrogen or oxygen in the ring
- C10M 2219/106: Thiadiazoles
- C10M 2219/108: Phenothiazine
- C10M 2223/00: Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M 2223/02: having no phosphorus-to-carbon bonds
- C10M 2223/04: Phosphate esters
- C10M 2223/041: Triaryl phosphates
- C10M 2223/042: Metal salts thereof
- C10M 2223/045: Metal containing thio derivatives
- C10M 2223/047: Thioderivatives not containing metallic elements
- C10M 2223/049: Phosphite
- C10M 2223/06: having phosphorus-to-carbon bonds
- C10M 2223/061: Metal salts
- C10M 2223/065: containing sulfur
- C10M 2227/09: Complexes with metals
- C10M 2229/025: used as base material
- C10M 2229/0405: used as base material
- C10M 2229/041: containing aliphatic substituents
- C10M 2229/0415: used as base material
- C10M 2229/042: containing aromatic substituents
- C10M 2229/0425: used as base material
- C10M 2229/0435: used as base material
- C10M 2229/0445: used as base material
- C10M 2229/0455: used as base material
- C10M 2229/0465: used as base material
- C10M 2229/0475: used as base material
- C10M 2229/0485: used as base material
- C10M 2229/0505: used as base material
- C10M 2229/051: containing halogen
- C10M 2229/0515: used as base material
- C10M 2229/0525: used as base material
- C10M 2229/0535: used as base material
- C10M 2229/0545: used as base material
- C10N 2010/00: Metal present as such or in compounds
- C10N 2010/04: Groups 2 or 12
- C10N 2010/08: Groups 4 or 14
- C10N 2010/14: Group 7
- C10N 2010/16: Groups 8, 9, or 10
- C10N 2020/01: {Physico-chemical properties}
- C10N 2040/00: Specified use or application for which the lubricating composition is intended
- C10N 2040/06: Instruments or other precision apparatus, e.g. damping fluids
- C10N 2040/30: Refrigerators lubricants {or compressors lubricants}
- C10N 2040/32: Wires, ropes or cables lubricants
- C10N 2040/34: Lubricating-sealants
- C10N 2040/36: Release agents {or mold release agents}
- C10N 2040/38: {Conveyors or chain belts}
- C10N 2040/40: {Generators or electric motors in oil or gas winning field}
- C10N 2040/42: {Flashing oils or marking oils}
- C10N 2040/44: {Super vacuum or supercritical use}
- C10N 2040/50: {Medical uses}
- C10M: LUBRICATING COMPOSITIONS (well drilling compositions C09K8/02); USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C3/00, for plastics or substances in a plastic state, in general B29C33/56, for glass C03B40/02; textile lubricating compositions D06M11/00, D06M13/00, D06M15/00; immersion oils for microscopy G02B21/33)
- C10N: INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS

## Abstract

A composition for hydraulic, lubricating and coupling is disclosed herein, which comprises organopolysiloxane and at least one additive selected from the group consisting of an anti-wear agent which is phosphorus type or sulfur type, a metal deactivator and a corrosion inhibitor. The composition according to the present invention further comprises an antioxidant. The composition according to the present invention can be used at high temperature for a long period, without showing a significant increase in viscosity.

## Claims

### Claim 1

A fan coupling composition which comprises:
i) an organopolysiloxane having a viscosity of 1,000 to 20,000 cSt 25.degree. C.;
ii) from 0.01 to 5%, by weight of the organopolysiloxane, of a phosphorous type anti-wear agent; and
iii) from 0.01 to 2%, by weight of the organopolysiloxane, of an antioxidant; said phosphorous type anti-wear agent having one of the following formulae (I) to VII): ##STR8## wherein each of R.sub.1 to R.sub.4 is independently hydrogen or a monovalent hydrocarbon group containing from 1 to 20 carbon atoms; each of R.sub.5 to R.sub.7 is independently a divalent hydrocarbon group containing from 1 to 6 carbon atoms; each of X.sub.1 to X.sub.4 is independently oxygen or sulfur; each Y is independently a direct bond, oxygen or sulfur; and n is an integer of from 0 to 2, with the proviso that both X.sub.2 and X.sub.3 are sulfur when n is 0; ##STR9## wherein R.sub.1 to R.sub.7, X.sub.1 to X.sub.4, Y and n are as defined in Formula (I); ##STR10## wherein each of R.sub.1 to R.sub.4 is independently hydrogen or a monovalent hydrocarbon group containing from 1 to 20 carbon atoms; each of R.sub.5 and R.sub.6 is independently a divalent hydrocarbon group containing from 1 to 6 carbon atoms; each of X.sub.1 to X.sub.4 is independently oxygen or sulfur; each Y is independently a direct bond, oxygen or sulfur; and n is an integer of from 0 to 2; ##STR11## wherein each of R.sub.1 and R.sub.2 is independently hydrogen or a monovalent hydrocarbon group containing from 1 to 20 carbon atoms; R.sub.8 is a hydrocarbon group containing from 1 to 20 carbon atoms and containing at least one ester bond; each of X.sub.1 and X.sub.2 is independently oxygen or sulfur; and each Y is independently a direct bond, oxygen or sulfur;
(R--Y).sub.3 --P.dbd.X.sub.a (V)
wherein each R-y group may be identical or different, R is hydrogen or a hydrocarbon group containing from 1 to 20 carbon atoms; X is oxygen or sulfur; Y is oxygen or sulfur; and a is 0 or 1;
(R--Y.sub.b).sub.3 --P.dbd.X.sub.a (VI)
wherein each R-Y.sub.b group may be identical or different, R is hydrogen or a hydrocarbon group containing from 1 to 20 carbon atoms; X is oxygen or sulfur; Y is oxygen or sulfur; a is 0 or 1; and b is 0 or 1;
((R).sub.2 N).sub.a (RO).sub.b --P.dbd.X (VII)
wherein each R.sub.2 N group and each RO group may be identical or different, R is hydrogen or a hydrocarbon group containing from 1 to 20 carbon atoms; X is oxygen or sulfur; a is an integer of from 1 to 3; and b is an integer of from 0 to 2, with the proviso that a+b=3.

### Claim 2 (depends on 1)

A composition according to claim 1 wherein:
in formulae (I) and (II) each of R.sub.1 to R.sub.4 is independently hydrogen or a linear or branched alkyl group, aryl group, aralkyl group, araryl group or halogenated hydrocarbon group and each of R.sub.5 to R.sub.7 is independently a linear or branched alkyl group, aryl group, aralkyl group, araryl group or halogenated hydrocarbon group;
in formula (III) each of R.sub.1 to R.sub.4 is independently hydrogen or a linear or branched alkyl group, aryl group, aralkyl group, araryl group or halogenated hydrocarbon group and each of R.sub.5 and R.sub.6 is independently a linear or branched alkyl group, aryl group, aralkyl group, araryl group or halogenated hydrocarbon group; and
in formulae (V) to (VII) each R is independently hydrogen or a linear or branched alkyl group, aryl group, aralkyl group, araryl group or halogenated hydrocarbon group.

### Claim 3 (depends on 1, 2)

A composition according to claim 1 or 2 further including at least one of (a) a sulfur anti-wear agent present in an amount of 0.01 to 5% by weight of the organopolysiloxane; (b) metal deactivator present in an amount of 0.001 to 1.0% by weight of the organopolysiloxane; (c) corrosion inhibitor present in an amount of 0.001 to 1.0% by weight of the organopolysiloxane.