EP0068061A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method for preventing the leaching of cobalt and nickel metal surfaces and a concentrate used in such method
Assignee: Ashland LLC
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Filing: 1981-06-25
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Granted: —
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Expires: 2001-06-25
Abstract
Abstract Metal working compositions (water base, oil base and oil-in-water-emulsions) containing a triazole of structure (I) in which R is hydrogen or methyl and/or a thiadiazole of structure (II) in which R is hydrogen or methyl and/or a thiadazole of structure (III) in which R" is hydrogen, sodium or triethanol-ammonium. Optionally other additives may be added, e.g. sodium gluconate. The aqueous base and oil-in-water emulsions may be prepared in the form of a liquid concentrate which is subsequently diluted with water to form a metal working coolant or lubricant. These compositions prolong the life of metal cutting and grinding tools containing tungsten carbide particles bonded together by cobalt or nickel:
Inventors
- 👤 John M. Mcchesney
- 👤 Perry E. Landers
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 17:02
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/08; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; C23F11/16; C23F11/165; C10M2201/00; C10M2201/02; C10M2201/087; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/124; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/142; C10M2207/22; C10M2211/00; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/28; C10M2215/30; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
A method for preventing the leaching of cobalt and nickel metal surfaces through exposure to a liquid containing leaching agents, comprising contacting said nickel and metal surfaces with a liquid solution of a compound selected from the group consisting of triazole compounds having the structural formula: where R is a hydrogen or a methyl radical; thiadiazole compounds having the structural formula: where R' is hydrogen or a methyl radical; thiadiazole compounds having the structural formula: where R" is hydrogen or sodium; di-(triethanolammonium) dimercapto-thiadiazole; and mixtures thereof.
Claim 2
Independent Claim
86 words
A method for preventing the leaching of cobalt and nickel metal surfaces through exposure to a liquid containing leaching agents, comprising contacting said nickel and metal surfaces with a liquid solution of a compound selected from the group consisting of triazole compounds having the structural formula: where R is a hydrogen or a methyl radical; thiadiazole compounds having the structural formula: where R' is hydrogen or a methyl radical; thiadiazole compounds having the structural formula: where R" is hydrogen or sodium; di-(triethanolammonium) dimercapto-thiadiazole; and mixtures thereof.
Claim 3
Dependent Claim
27 words
The Method of claim 1 wherein the concentration of said compound in said liquid solution is between about 1 and about 5 parts per 100 by weight.
Claim 4
Dependent Claim
74 words
A concentrate which can be diluted with water to fori a coolant and lubricant for working metal having present therein a compound selected from the group consisting of: triazole compounds having the structural formula: where R is hydrogen or a methyl radical; thiadiazole compounds having the structural formula: where R' is hydrogen or a methyl radical; thiadiazole compounds having the structural formula: where R" is hydrogen or sodium; di-(triethanol ammonium) dimercaptothiadiazole and mixtures thereof.
Claim 5
Dependent Claim
74 words
A concentrate which can be diluted with water to fori a coolant and lubricant for working metal having present therein a compound selected from the group consisting of: triazole compounds having the structural formula: where R is hydrogen or a methyl radical; thiadiazole compounds having the structural formula: where R' is hydrogen or a methyl radical; thiadiazole compounds having the structural formula: where R" is hydrogen or sodium; di-(triethanol ammonium) dimercaptothiadiazole and mixtures thereof.
Claim 6
Dependent Claim
54 words
The concentrate of claim 3 further comprising an oil-in-water emulsion of between about 60 and about 80 parts mineral oil, between about 15 and 25 parts of an oil-in-water emulsifier; and between about 1 and about 5 parts of said triazole or thiadiazole or said mixtures thereof, each per 100 parts total of concentrate.
Claim 7
Dependent Claim
32 words
The concentrate of claim 3 further comprising a water solution of between about 3 and about 10 parts of said triazole, thiadiazole, or said mixtures thereof in 100 parts total of concentrate.
Claim 8
Dependent Claim
17 words
The concentrate of claim 5 further comprising between about 1 and about 6 parts of sodium gluconate.
Claim 9
Dependent Claim
18 words
The coolant and lubricant composition comprising the concentrate of claim 3, 4, 5 or 6 diluted with water.
Claim 10
Dependent Claim
33 words
A coolant and lubricant composition comprising between about 80 and about 95 parts of mineral oil and between about 1 and about 5 parts of a triazole, a thiadiazole or a mixture thereof.
Claim 11
Dependent Claim
33 words
A coolant and lubricant composition comprising between about 80 and about 95 parts of mineral oil and between about 1 and about 5 parts of a triazole, a thiadiazole or a mixture thereof.
References Cited (Backward Citations)
US3186946A
Cited
US3265620A
Cited
GB1130663A
Cited
FR2002205A1
Cited
US3681247A
Cited
FR2237957A1
Cited
US4218329A
Cited
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