US4088585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant containing MoS2, lubricating process, and lubricated workpiece
Assignee: CRS Holdings LLC
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Filing: 1975-11-13
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Granted: 1978-05-09
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Expires: 1995-11-13
Abstract
Abstract A dry-film, water-base lubricant is provided for coating metallic workpieces for use in cold forming operations comprising MoS 2 powder, hydroxyethyl cellulose, and sodium and/or potassium silicate. A process for applying this lubricant and a lubricated workpiece are also provided.
Inventors
- 👤 William L. Karpen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:52
CPC Classifications
C; C10; C10M; C10M103/00; C10M103/06; C10M111/00; C10M111/04; C10M2201/00; C10M2201/02; C10M2201/06; C10M2201/063; C10M2201/065; C10M2201/066; C10M2201/10; C10M2201/102; C10M2201/105; C10M2209/00; C10M2209/12; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
44 words
A composition for forming a dry lubricating film on metallic workpieces, comprising powdered MoS 2 , soluble silicate wherein the silicate comprises silicon dioxide and an oxide selected from the group consisting of sodium oxide and potassium oxide, hydroxyethyl cellulose, and the balance water.
Claim 2
Dependent Claim
44 words
A composition for forming a dry lubricating film on metallic workpieces, comprising powdered MoS 2 , soluble silicate wherein the silicate comprises silicon dioxide and an oxide selected from the group consisting of sodium oxide and potassium oxide, hydroxyethyl cellulose, and the balance water.
Claim 3
Dependent Claim
14 words
The composition of claim 1 containing about 5 to 30% powdered MoS 2 .
Claim 4
Dependent Claim
14 words
The composition of claim 2 containing about 10 to 30% powdered MoS 2 .
Claim 5
Dependent Claim
12 words
The composition of claim 1 containing about 0.6 to 12% soluble silicate.
Claim 6
Dependent Claim
25 words
The composition of claim 4 wherein the ratio by weight of silicon dioxide to oxide is more than about 1.5 and less than about 4.
Claim 7
Dependent Claim
12 words
The composition of claim 1 containing about 0.2 to 3% hydroxyethyl cellulose.
Claim 8
Dependent Claim
46 words
The composition of claim 1 containing about 5 to 30% powdered MoS 2 , about 0.6 to 12% soluble silicate wherein the ratio by weight of silicon dioxide to oxide is more than about 1.5 and less than about 4, about 0.2 to 3% hydroxyethyl cellulose.
Claim 9
Dependent Claim
12 words
The composition as set forth in claim 1 further comprising a biocide.
Claim 10
Dependent Claim
11 words
The composition of claim 8 wherein said biocide is pine oil.
Claim 11
Dependent Claim
36 words
The composition of claim 1 wherein said powdered MoS 2 has an average particle size of less than about 0.45 micron and a typical average surface area of more than about 13.0 square meters per gram.
Claim 12
Dependent Claim
36 words
The composition of claim 7 wherein said powdered MoS 2 has an average particle size of less than about 0.45 micron and a typical average surface area of more than about 13.0 square meters per gram.
Claim 13
Dependent Claim
42 words
The composition of claim 11 wherein the hydroxyethyl cellulose is a nonionic water-soluble polymer of the general structure: ##STR2## in which R 1 is --C 2 H 4 --O--C 2 H 4 OH and R 2 is --C 2 H 4 OH.
Claim 14
Dependent Claim
20 words
The composition of claim 12 wherein the hydroxyethyl cellulose is treated to provide faster dispersion and easier dissolving in water.
Claim 15
Dependent Claim
26 words
The composition of claim 13 wherein a 5% aqueous solution of the hydroxyethyl cellulose has a Brookfield Viscosity at 25° C of 75 to 150 centipoises.
Claim 16
Dependent Claim
16 words
The composition of claim 14 further comprising pine oil as a biocide and a defoaming agent.
Claim 17
Dependent Claim
25 words
The composition of claim 15 wherein the oxide is sodium oxide and the ratio by weight of silicon dioxide to sodium oxide is about 2.40.
Claim 18
Dependent Claim
24 words
The composition of claim 16 comprising about 24% powdered MoS 2 , about 4.9% soluble silicate, about 2.5% hydroxyethyl cellulose, about 0.1% pine oil.
Claim 19
Dependent Claim
24 words
The composition of claim 16 comprising about 19% powdered MoS 2 , about 4.7% soluble silicate, about 1% hydroxyethyl cellulose, about 0.1% pine oil.
Claim 20
Dependent Claim
28 words
A method of applying the composition of claim 1 to a metallic workpiece comprising the steps of coating the workpiece with said composition and then drying the workpiece.
Claim 21
Dependent Claim
28 words
A method of applying the composition of claim 7 to a metallic workpiece comprising the steps of coating the workpiece with said composition and then drying the workpiece.
Claim 22
Dependent Claim
37 words
A method of applying the composition of claim 15 to a metallic workpiece in which the workpiece is coated by immersing it in a continuously mixed bath consisting essentially of said composition and then drying the workpiece.
Claim 23
Dependent Claim
17 words
The method of claim 21 wherein the workpiece is dried by means of a forced air stream.
Claim 24
Dependent Claim
16 words
The method of claim 22 wherein the composition contains 10 to 30% powdered MoS 2 .
Claim 25
Dependent Claim
25 words
The method of claim 23 wherein the oxide is sodium oxide and the ratio by weight of silicon dioxide to sodium oxide is about 2.40.
Claim 26
Dependent Claim
27 words
The method of claim 24 wherein the bath contains about 24% powdered MoS 2 , about 4.9% soluble silicate, about 2.5% hydroxyethyl cellulose, about 0.1% pine oil.
Claim 27
Dependent Claim
34 words
The method of claim 21 which, after drying the workpiece, further comprises the steps of rotating the workpiece 180°, then immersing the workpiece in the bath a second time, and drying a second time.
Claim 28
Dependent Claim
16 words
The method of claim 26 wherein the drying is by means of a forced air stream.
Claim 29
Dependent Claim
25 words
The method of claim 27 wherein the oxide is sodium oxide and the ratio by weight of silicon dioxide to sodium oxide is about 2.40.
Claim 30
Dependent Claim
26 words
The method of claim 28 wherein the bath contains about 19% MoS 4 , about 4.7% soluble silicate, about 1% hydroxyethyl cellulose, about 0.1% pine oil.
Claim 31
Dependent Claim
14 words
The method of claim 29 wherein the metallic workpiece is a coil of wire.
Claim 32
Dependent Claim
13 words
The method of claim 30 wherein the wire is composed of stainless steel.
Claim 33
Dependent Claim
14 words
A metallic workpiece coated with a film formed from the composition of claim 1.
Claim 34
Dependent Claim
14 words
A metallic workpiece coated with a film formed from the composition of claim 7.
Claim 35
Dependent Claim
14 words
A metallic workpiece coated with a film formed from the composition of claim 15.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |