US4218329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling and lubricating fluid for metal working
Assignee: Individual
•
Filing: 1978-08-28
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Granted: 1980-08-19
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Expires: 1998-08-28
Abstract
Abstract A cooling and lubricating fluid for metal cutting, grinding and other machining processes comprises an aqueous solution of a salt of molybdate, a reaction product of an aromatic sulfonamidocarboxylic acid and alkanol amines, morpholine, a metal deactivator, a coupling agent, and optionally, bactericide, fungicide, chelating and extreme pressure agents.
Inventors
- 👤 Kook-Wha Koh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:20
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
131 words
An aqueous cooling and lubricating fluid for metal cutting and fabricating operations comprising: (a) from about 0.1 parts to about 10 parts of an inorganic corrosion inhibitor selected from the group consisting of water-soluble salts of molybdate; (b) from about 1 part to about 70 parts of an organic corrosion inhibitor selected from the group consisting of water soluble reaction products of an aromatic sulfonamidocarboxylic acid and an amine; (c) from about 5 parts to about 50 parts of an organic corrosion inhibitor selected from the group consisting of water-soluble amines and mixtures thereof; (d) from about 0.3 to about 10 parts of morpholine; (e) from about 0.1 part to about 10 parts of a metal deactivator; and (f) from about 0.1 part to about 15 parts of a coupling agent.
Claim 2
Dependent Claim
131 words
An aqueous cooling and lubricating fluid for metal cutting and fabricating operations comprising: (a) from about 0.1 parts to about 10 parts of an inorganic corrosion inhibitor selected from the group consisting of water-soluble salts of molybdate; (b) from about 1 part to about 70 parts of an organic corrosion inhibitor selected from the group consisting of water soluble reaction products of an aromatic sulfonamidocarboxylic acid and an amine; (c) from about 5 parts to about 50 parts of an organic corrosion inhibitor selected from the group consisting of water-soluble amines and mixtures thereof; (d) from about 0.3 to about 10 parts of morpholine; (e) from about 0.1 part to about 10 parts of a metal deactivator; and (f) from about 0.1 part to about 15 parts of a coupling agent.
Claim 3
Dependent Claim
36 words
A fluid as recited in claim 1 wherein said organic corrosion inhibitor selected from the group consisting of water-soluble amines is selected from the group consisting of alkyl-amines, alkylolamines, fatty-amines, ethoxylated-amines, polyethoxylated amines and polyethoxylated diamines.
Claim 4
Dependent Claim
29 words
A fluid as recited in claim 2 wherein said organic corrosion inhibitor selected from the group consisting of water soluble amines is a mixture of at least two amines.
Claim 5
Dependent Claim
22 words
A fluid as recited in claim 1 wherein said metal deactivator is selected from the group consisting of 2-mercaptobenzothiazole, 1,2,3-benzotriazole and tolytriazole.
Claim 6
Dependent Claim
22 words
A fluid as recited in claim 1 wherein said coupling agent is selected from the group consisting of glycol ethers and diols.
Claim 7
Dependent Claim
13 words
A fluid as recited in claim 5 wherein said coupling agent is dipropyleneglycolmethylether.
Claim 8
Dependent Claim
25 words
A fluid as recited in claim 1 wherein said fluid contains, in addition, a bactericide, a fungicide, a chelating agent and an extreme pressure agent.
Claim 9
Dependent Claim
17 words
A fluid as recited in claim 1 wherein said water soluble salt of molybdate is sodium molybdate.
Claim 10
Dependent Claim
33 words
A fluid as recited in claim 1 wherein said organic corrosion inhibitor selected from the group consisting of water soluble amines is selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, and tri-isopropanolamine.
Claim 11
Dependent Claim
126 words
A fluid as recited in claim 1 wherein said fluid comprises: (a) from about 2 parts to about 5 parts of sodium molybdate; (b) from about 5 parts to about 50 parts of a corrosion inhibitor selected from the group consisting of water soluble reaction products of an aromatic sulfonamidocarboxylic acid and an amine; (c) from about 20 parts to about 30 parts of an organic corrosion inhibitor selected from the group consisting of mixtures of water soluble amines; (d) from about 0.5 part to about 5 parts of morpholine; (e) from about 1 part to about 5 parts of a metal deactivator; and (f) from about 1 part to about 5 parts of a coupling agent selected from the group consisting of glycolethers and diols.
Claim 12
Dependent Claim
58 words
An aqueous cooling and lubricating fluid for metal cutting and fabricating operations comprising: (a) about 3 parts sodium molybdate; (b) about 5 parts morpholine; (c) about 4 parts sodium mercaptobenzothiazole; (d) about 17 parts triethanolamine; (e) about 30 parts of the reaction product of an aromatic sulfonamidocarboxylic acid and an amine; and (f) about 2 parts of di-propyleneglycolmethylether.
Claim 13
Dependent Claim
58 words
An aqueous cooling and lubricating fluid for metal cutting and fabricating operations comprising: (a) about 3 parts sodium molybdate; (b) about 5 parts morpholine; (c) about 4 parts sodium mercaptobenzothiazole; (d) about 17 parts triethanolamine; (e) about 30 parts of the reaction product of an aromatic sulfonamidocarboxylic acid and an amine; and (f) about 2 parts of di-propyleneglycolmethylether.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-19 | 1984-02-18 | 1984-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-19 | 1988-02-18 | 1988-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-19 | 1992-02-18 | 1992-08-19 | $7700.00 | Window Closed / Lapsed |