US4461712A — Substantially neutral aqueous lubricant

Claim 1

Independent Claim 72 words

An aqueous gel lubricant which comprises: (a) a major proportion of water; (b) an effective gelling amount of a polymeric polyelectrolyte acrylate compound having a molecular weight of at least about 1,000; (c) an effective lubricating amount of a fatty acid salt compound; and (d) an effective lubricating amount of polyalkylene oxide having a molecular weight of at least about 300,000; wherein the pH of the aqueous gel lubricant is about neutral.

Claim 2

Dependent Claim 72 words

An aqueous gel lubricant which comprises: (a) a major proportion of water; (b) an effective gelling amount of a polymeric polyelectrolyte acrylate compound having a molecular weight of at least about 1,000; (c) an effective lubricating amount of a fatty acid salt compound; and (d) an effective lubricating amount of polyalkylene oxide having a molecular weight of at least about 300,000; wherein the pH of the aqueous gel lubricant is about neutral.

Claim 3

Dependent Claim 22 words

The aqueous gel lubricant of claim 1 wherein the lubricant further comprises an effective antioxidant solubilizing amount of a C 1-6 alcohol.

Claim 4

Dependent Claim 24 words

The aqueous lubricant of claim 1 wherein the polymeric polyelectrolyte acrylate compound is polyacrylic acid having a molecular weight of at least about 3,000.

Claim 5

Dependent Claim 21 words

The aqueous lubricant of claim 1 wherein the fatty acid salt compound is a C 12-24 unsaturated fatty acid salt compound.

Claim 6

Dependent Claim 26 words

The aqueous lubricant of claim 3 wherein the C 12-24 unsaturated fatty acid salt compound is a potassium salt of a C 12-24 unsaturated fatty acid.

Claim 7

Dependent Claim 23 words

The aqueous lubricant of claim 1 wherein the polyalkylene oxide compound comprises polyethylene oxide having a molecular weight of about 300,000 to 4,000,000.

Claim 8

Dependent Claim 22 words

The aqueous lubricant of claim 1 wherein the C 1-6 alcohol is methanol, ethanol, ethylene glycol, propylene glycol, amyl alcohol, or n-hexanol.

Claim 9

Dependent Claim 17 words

The aqueous lubricant of claim 6 wherein the C 1-6 alcohol is isopropyl alcohol or propylene glycol.

Claim 10

Dependent Claim 17 words

The aqueous gel lubricant of claim 1 wherein the lubricant has a pH about 6.4 to 7.

Claim 11

Dependent Claim 94 words

The aqueous gel lubricant of claim 1 which comprises: (a) a major portion of water; (b) the polymeric polyelectrolyte acrylate compound; (c) about 1 to 15 parts by weight of the potassium salt of a C 16-20 fatty acid; (d) about 0.05 to 10 parts by weight of a polyethylene oxide compound having a molecular weight of about 1,000,000; (e) about 1 to 30 parts by weight of isopropanol or propylene glycol; each per part of the polymeric polyelectrolyte acrylate compound, wherein the aqueous gel lubricant has a pH of about 6.4 to 7.

Claim 12

Independent Claim 168 words

A method to formulate an aqueous gel lubricant which comprises: (a) forming an aqueous solution of about 0.1 to 100 parts of a polymeric polyelectrolyte acrylate compound per 1,000 parts of water; (b) forming a solution of about 10 to 100 parts of a fatty acid compound per 10 parts of water or a C 1-6 hydroxy compound; (c) forming a suspension of about 10 to 50 parts polyalkylene oxide per 10 parts of C 1-6 alcohol; and (d) combining the aqueous solution of acrylate compound in (a), the solution of the fatty acid salt compound of (b) and the suspension of the polyalkylene oxide of (c) to form the aqueous gelled lubricant containing a major proportion of water, the polymeric polyelectrolyte acrylate compound, about 1 to 10 parts of the fatty acid compound, about 0.05 to 10 parts of the alkyleneoxide compound and about 1 to 30 parts of alkanol each per part of the acrylate compound, wherein the aqueous gel lubricant has a pH about neutral.

Claim 13

Independent Claim 168 words

A method to formulate an aqueous gel lubricant which comprises: (a) forming an aqueous solution of about 0.1 to 100 parts of a polymeric polyelectrolyte acrylate compound per 1,000 parts of water; (b) forming a solution of about 10 to 100 parts of a fatty acid compound per 10 parts of water or a C 1-6 hydroxy compound; (c) forming a suspension of about 10 to 50 parts polyalkylene oxide per 10 parts of C 1-6 alcohol; and (d) combining the aqueous solution of acrylate compound in (a), the solution of the fatty acid salt compound of (b) and the suspension of the polyalkylene oxide of (c) to form the aqueous gelled lubricant containing a major proportion of water, the polymeric polyelectrolyte acrylate compound, about 1 to 10 parts of the fatty acid compound, about 0.05 to 10 parts of the alkyleneoxide compound and about 1 to 30 parts of alkanol each per part of the acrylate compound, wherein the aqueous gel lubricant has a pH about neutral.

Claim 14

Dependent Claim 21 words

The method of claim 9 wherein the acrylate gelling compound is a polyacrylic acid having a molecular weight of about 4,000.

Claim 15

Dependent Claim 19 words

The method of claim 9 wherein the fatty acid compound comprises a C 12-24 unsaturated fatty acid salt compound.

Claim 16

Dependent Claim 22 words

The method of claim 11 wherein the unsaturated fatty acid salt compound comprises the potassium salt of a C 12-24 fatty acid.

Claim 17

Dependent Claim 21 words

The method of claim 9 wherein the polyalkylene oxide comprises polyethylene oxide having a molecular weight of about 300,000 to 4,000,000.

Claim 18

Dependent Claim 25 words

The method of claim 9 wherein the C 1-6 hydroxy compound is methanol, ethanol, ethylene glycol, propylene glycol, butanol, tertiary butanol, amyl alcohol, or n-hexanol.

Claim 19

Dependent Claim 15 words

The method of claim 9 wherein the C 1-6 alcohol is isopropanol or propylene glycol.

Claim 20

Dependent Claim 82 words

An aqueous gelled lubricant which consists essentially of: (a) a major proportion of water; (b) a polymer polyelectrolyte acrylate compound; (c) about 1 to about 10 parts of the potassium salt of a C 12-24 unsaturated fatty acid; (d) about 0.1 to about 1 part of polyethyleneoxide having a molecular weight of about 4,000,000; and (e) 1 to 30 parts of isopropanol; each per part of the acrylate compound, wherein the pH of the aqueous gel lubricant is about 6.4 to 7.

Claim 21

Dependent Claim 82 words

An aqueous gelled lubricant which consists essentially of: (a) a major proportion of water; (b) a polymer polyelectrolyte acrylate compound; (c) about 1 to about 10 parts of the potassium salt of a C 12-24 unsaturated fatty acid; (d) about 0.1 to about 1 part of polyethyleneoxide having a molecular weight of about 4,000,000; and (e) 1 to 30 parts of isopropanol; each per part of the acrylate compound, wherein the pH of the aqueous gel lubricant is about 6.4 to 7.

Claim 22

Dependent Claim 34 words

A method of lubricating the installation of cable in conduit which comprises applying the lubricant of claim 1 to the interfaces between cable and conduit during the introduction of the cable into the conduit.

Claim 23

Dependent Claim 34 words

A method of lubricating the installation of cable into conduit which comprises applying the lubricant of claim 16 to the interfaces between cable and conduit during the introduction of the cable into the conduit.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1987-07-24	1988-01-23	1988-07-24	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1991-07-24	1992-01-23	1992-07-24	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1995-07-24	1996-01-23	1996-07-24	$7700.00	Window Closed / Lapsed

Substantially neutral aqueous lubricant

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