# US 5,348,669 A · Cable grease composition and articles incorporating same

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- Number: US 5,348,669 A
- Document ID: US5348669A
- Status: Granted
- Kind: A
- Application number: 08/072,649
- Filed: 1993-06-04
- Granted: 1994-09-20
- Earliest claimed: 1990-06-22
- Assignees: CasChem, Inc.
- Inventors: Melvin Brauer; Yuan C. Chu
- Web page: https://patentgrep.com/patent/US5348669A

## CPC

- G02B 6/4401: {Optical cables (glass fibres with a protective coating G02B6/02395)}
- C10M 107/32: Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
- C10M 107/34: Polyoxyalkylenes
- C10M 113/10: Clays; Micas
- C10M 113/12: Silica
- C10M 113/16: Inorganic material treated with organic compounds, e.g. coated
- C10M 129/10: having hydroxy groups bound to a carbon atom of a six-membered aromatic ring
- C10M 169/00: Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M 2201/1036: used as thickening agents
- C10M 2201/105: Silica
- C10M 2201/14: inorganic compounds surface treated with organic compounds
- C10M 2201/145: used as thickening agents
- C10M 2205/00: Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M 2205/026: Butene
- C10M 2205/04: containing aromatic monomers, e.g. styrene
- C10M 2205/06: containing conjugated dienes
- C10M 2207/023: having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M 2207/026: with tertiary alkyl groups
- C10M 2207/027: Neutral salts thereof
- C10M 2207/287: Partial esters
- C10M 2209/1013: used as base material
- C10M 2209/102: Polyesters
- C10M 2209/1023: used as base material
- C10M 2209/1033: used as base material
- C10M 2209/104: of alkylene oxides containing two carbon atoms only
- C10M 2209/1045: used as base material
- C10M 2209/105: of alkylene oxides containing three carbon atoms only
- C10M 2209/1055: used as base material
- C10M 2209/106: of alkylene oxides containing four carbon atoms only
- C10M 2209/1065: used as base material
- C10M 2209/1075: used as base material
- C10M 2209/1085: used as base material
- C10M 2209/1095: used as base material
- C10M 2211/06: Perfluorinated compounds
- C10M 2213/02: obtained from monomers containing carbon, hydrogen and halogen only
- C10M 2213/062: Polytetrafluoroethylene [PTFE]
- C10M 2229/041: containing aliphatic substituents
- C10N 2040/00: Specified use or application for which the lubricating composition is intended
- 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}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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 grease composition for use as a cable filling material which contains about 75 to 95 parts by weight of a base component of a polyol or ester having a molecular weight of at least about 3000 and about 2 to 20 parts by weight of colloidal particles such as silica. Optionally, an antioxidant component can be added to impart high temperature resistance or a rubber component can be added to improve bleed resistance. Also, an article of manufacture of a cable having a sheath with one of the grease compositions of the invention located therein, and a method for filling the cable with such grease compositions.

## Claims

### Claim 1

A cable filling material of a grease composition consisting essentially of about 75 to 95 parts by weight of a polyol comprising a polybutadiene diol, triol or tetrol and having a molecular weight of at least about 3000; and about 2 to 15 parts by weight of colloidal particles of silica, clay or mixtures thereof.

### Claim 2 (depends on 1)

The composition of claim 1 wherein the colloidal particles are hydrophobic fumed silica, precipitated silica, clay or mixtures thereof.

### Claim 3 (depends on 1)

The composition of claim 1 wherein the colloidal particles are present in an amount of at least about 4 parts by weight.

### Claim 4 (depends on 1)

The composition of claim 1 further consisting essentially of a rubber component in an amount of up to about 15 parts by weight.

### Claim 5 (depends on 4)

The composition of claim 4 wherein the rubber component is butyl rubber, ethylene propylene rubber, ethylene propylene dimer rubber, chlorinated rubber or a thermoplastic/rubber block copolymer.

### Claim 6 (depends on 1)

The composition of claim 1 further consisting essentially of an antioxidant in an amount of between about 0.5 and 5 parts by weight.

### Claim 7

A cable filling material of a grease composition consisting essentially of about 75 to 95 parts by weight of a polyester polyol having a hydroxy functionality of at least 2 and a molecular weight of at least about 3000; and about 2 to 15 parts by weight of colloidal particles of silica, clay or mixtures thereof.

### Claim 8 (depends on 7)

The composition of claim 7 wherein the polyester polyol is an esterification product of a polyol with a polycarboxylic acid or a polymerized hydroxy terminated vegetable oil.

### Claim 9 (depends on 7)

The composition of claim 7 wherein the polyester polyol is a polymerized ester of a carboxylic acid having at least 8 carbon atoms which is a liquid at ambient temperature, a recinoleate ester, or polymerized castor oil.

### Claim 10 (depends on 7)

The composition of claim 7 wherein the colloidal particles are hydrophobic fumed silica, precipitated silica, clay or mixtures thereof, and are present in an amount of at least 4 parts by weight.

### Claim 11 (depends on 7)

The composition of claim 7 further consisting essentially of rubber component in an amount of up to about 15 parts by weight.

### Claim 12 (depends on 11)

The composition of claim 11 wherein the rubber component is butyl rubber, ethylene propylene rubber, ethylene propylene dimer rubber, chlorinated rubber or a thermoplastic/rubber block copolymer.

### Claim 13 (depends on 7)

The composition of claim 7 further consisting essentially of an antioxidant in an amount of between about 0.5 and 5 parts by weight.

### Claim 14

A cable filling material of a grease composition consisting essentially of about 75 to 95 parts by weight of a polyol having a hydroxy functionality of at least 2 and a molecular weight of at least about 3000; about 2 to 15 parts by weight of colloidal particles of silica, clay or mixtures thereof; and about 2 to about 5 parts by weight of an antioxidant of a sterically hindered phenolic compound so that the composition has an oxidative induction time of at least about 10 minutes at 190.degree. C. in a pure oxygen environment.

### Claim 15 (depends on 14)

The composition of claim 14 wherein the antioxidant is present in an amount of at least about 3 parts by weight so hat the composition has an oxidative induction time of at least about 30 minutes at 190.degree. C. in a pure oxygen environment.

### Claim 16 (depends on 14)

The composition of claim 14 wherein the antioxidant is triethylene glycol bis [3-(3'-tert-butyl-4'-hydroxy-5'-methyl phenyl) propionate].

### Claim 17 (depends on 14)

The composition of claim 14 wherein the colloidal particles are hydrophobic fumed silica, precipitated silica, clay or mixtures thereof.

### Claim 18 (depends on 14)

The composition of claim 14 wherein the colloidal particles are present in an amount of at least about 4 parts by weight.

### Claim 19 (depends on 14)

The composition of claim 14 wherein the polyol is a polyether polyol, a polyester polyol or a hydrocarbon polyol.

### Claim 20 (depends on 14)

The composition of claim 14 further consisting essentially of a rubber component in an amount of up to about 15 parts by weight.

### Claim 21 (depends on 14)

The composition of claim 14 wherein the polyol is a polymerized ester of a carboxylic acid having at least 8 carbon atoms which is a liquid at ambient temperature.