US4366077A
Expired / Lapsed
US
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Temper rolling fluids
Assignee: John Lysaght Australia Pty Ltd
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Filing: 1980-08-28
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Granted: 1982-12-28
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Expires: 2000-08-28
Abstract
Abstract The invention provides a composition for application to a metal surface, the composition comprising an inorganic nitrite, a benzoate and a carbonate in aqueous solution. The composition may advantageously be used as a lubricant or coolant during metal working, for example temper rolling, and for protection of coil or sheet packs of steel against corrosion.
Inventors
- 👤 Barry E. Andrew
- 👤 Tak W. Mak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:57
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2201/06; C10M2201/062; C10M2201/08; C10M2201/082; C10M2201/083; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/10; C10M2207/14; C10M2207/141; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/20; C10N2040/22; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
27 words
A composition for application to a metal surface and characterized in that said composition comprises: an inorganic nitrite a benzoate, and a carbonate dissolved in aqueous solution.
Claim 2
Dependent Claim
27 words
A composition for application to a metal surface and characterized in that said composition comprises: an inorganic nitrite a benzoate, and a carbonate dissolved in aqueous solution.
Claim 3
Dependent Claim
31 words
A composition for application to a metal surface and characterized in that said composition comprises: an inorganic nitrite a benzoate, a carbonate, and a glycol or polyol; dissolved in aqueous solution.
Claim 4
Dependent Claim
31 words
A composition for application to a metal surface and characterized in that said composition comprises: an inorganic nitrite a benzoate, a carbonate, and a glycol or polyol; dissolved in aqueous solution.
Claim 5
Dependent Claim
33 words
A composition for application to a metal surface and characterised in that said composition comprises: an inorganic nitrite a benzoate, a carbonate, and a glycol or polyol; a surfactant dissolved in aqueous solution.
Claim 6
Dependent Claim
33 words
A composition for application to a metal surface and characterised in that said composition comprises: an inorganic nitrite a benzoate, a carbonate, and a glycol or polyol; a surfactant dissolved in aqueous solution.
Claim 7
Dependent Claim
20 words
A composition according to any one of claims 1 to 3 wherein said inorganic nitrite is an alkali metal nitrite.
Claim 8
Dependent Claim
19 words
A composition according to any one of claims 1 to 3 wherein said benzoate is an alkali metal benzoate.
Claim 9
Dependent Claim
19 words
A composition according to any one of claims 1 to 3 wherein said carbonate is an alkali metal carbonate.
Claim 10
Dependent Claim
13 words
A composition according to claim 4 wherein said inorganic nitrite is sodium nitrite.
Claim 11
Dependent Claim
12 words
A composition according to claim 5 wherein said benzoate is sodium benzoate.
Claim 12
Dependent Claim
12 words
A composition according to claim 6 wherein said carbonate is sodium carbonate.
Claim 13
Dependent Claim
10 words
A composition according to claim 1 further comprising ethylene glycol.
Claim 14
Dependent Claim
18 words
A composition according to any one of claim 1 or claim 10 further comprising a fatty acid ethoxylate.
Claim 15
Dependent Claim
37 words
A composition according to any one of claims 1 to 3 wherein the ratio of concentration of the carbonate to benzoate is selected to buffer the solution of a pH of from pH 8.0 to pH 11.5.
Claim 16
Dependent Claim
40 words
A composition according to any one of claims 1 to 3 wherein the carbonate is sodium carbonate, the benzoate is sodium benzoate, and the ratio by weight of sodium carbonate to sodium benzoate is in the range 2:1 to 4:1.
Claim 17
Dependent Claim
42 words
A composition according to any one of claims 1 to 3 wherein the nitrite is sodium nitrite the benzoate is sodium benzoate, and the ratio by weight of sodium nitrite to sodium benzoate is in the range of from 9:1 to 15:1.
Claim 18
Dependent Claim
24 words
A composition according to claim 14 wherein the ratio by weight of sodium nitrite to sodium benzoate is in the range 6:1 to 12:1.
Claim 19
Dependent Claim
19 words
A composition according to any one of claims 1 to 3 comprising less than 132 g/l of sodium nitrite.
Claim 20
Dependent Claim
54 words
A composition according to claim 3 comprising as solute per liter of solution of no more than 132 grams of soidum nitrite no more than 11 grams of sodium benzoate no more than 44 grams of sodium carbonate no more than 50 grams of ethylene glycol no more than 0.11 grams of a surfactant.
Claim 21
Dependent Claim
29 words
A composition according to claim 17 when diluted substantially to 5% V/V with water and having a pH of 10.5 to 11.5 and a surface tension of 40-50 dynes/cm.
Claim 22
Independent Claim
25 words
The method of treating steel comprising the steps of applying to the surface thereof a composition according to any one of claims 1 to 3.
Claim 23
Dependent Claim
30 words
The method according to claim 19 when said composition is applied so as to result in a surface loading of 1.0 to 6.6 mg nitrite per meter of steel surface.
Claim 24
Dependent Claim
17 words
The method according to claim 19 wherein said composition is applied by being sprayed onto said surface.
Claim 25
Dependent Claim
25 words
The method according to claim 19 wherein said composition is applied to said steel prior to or during metal working as a lubricant or coolant.
Claim 26
Dependent Claim
25 words
The method according to claim 22 wherein said composition is applied to said steel prior to or during temper rolling as a temper rolling fluid.
References Cited (Backward Citations)
US3425954A
Cited
US3931020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |