Patent US4927550A successfully refreshed from Google Patents.
US4927550A
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US
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Corrosion preventive composition
Assignee: Castrol Industrial Inc
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Filing: 1989-01-27
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Granted: 1990-05-22
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Expires: 2009-01-27
Abstract
Abstract The present invention is, in one form, an aqueous alkaline metalworking fluid composition in the form of a concentrate which includes a salt of orthophosphoric acid; a dibasicdioic acid in an amount of up to about 5.0% by weight of the concentrate; an essentially phosphonate-free chelating agent; and, a neutralizing base. The composition may also include a lubricating agent, a coupling agent, a passavating agent, a biocide, and a colorant.
Inventors
- 👤 John A. Cutcher
- 👤 Gary M. Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:34
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M125/00; C10M125/04; C10M125/10; C10M125/24; C10M125/26; C10M129/00; C10M129/02; C10M129/16; C10M129/26; C10M129/28; C10M129/30; C10M129/32; C10M129/38; C10M129/40; C10M129/42; C10M129/44; C10M133/00; C10M133/02; C10M133/04; C10M133/06; C10M133/08; C10M133/16; C10M133/30; C10M133/32; C10M135/00; C10M135/32; C10M145/00; C10M145/18; C10M145/24; C10M145/26; C10M145/34; C10M145/36; C10M145/38; C10M149/00; C10M149/12; C10M2201/00; C10M2201/02; C10M2201/04; C10M2201/05; C10M2201/06; C10M2201/062; C10M2201/063; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2201/085; C10M2201/086; C10M2201/087; C10M2201/10; C10M2201/102; C10M2201/105; C10M2207/00; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/123; C10M2207/124; C10M2207/125; C10M2207/126; C10M2207/127; C10M2207/128; C10M2207/129; C10M2207/22; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/107; C10M2209/108; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/122; C10M2215/20; C10M2215/202; C10M2215/22; C10M2215/221; C10M2215/222; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/04; C10M2219/00; C10M2219/09; C10M2219/10; C10N; C10N2010/00; C10N2010/02; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/10; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 61
Claim 1
Independent Claim
48 words
An aqueous alkaline metalworking fluid composition in the form of a concentrate comprising: a salt of orthophosphoric acid; a dibasicdioic acid in an amount of up to about 5.0% by weight of the concentrate; a chelating agent; and, a neutralizing base, said composition being essentially free of phosphates.
Claim 2
Dependent Claim
48 words
An aqueous alkaline metalworking fluid composition in the form of a concentrate comprising: a salt of orthophosphoric acid; a dibasicdioic acid in an amount of up to about 5.0% by weight of the concentrate; a chelating agent; and, a neutralizing base, said composition being essentially free of phosphates.
Claim 3
Dependent Claim
82 words
A composition according to claim 1, wherein said salt of orthophosphoric acid is present in an amount of from about 1% up to about 10% by weight; said dibasicdioic acid is present in an amount of from about 0.5% up to about 5.0% by weight, said chelating agent is present in an amount of from about 0.5% up to about 6.0% by weight; and, said neutralizing base is present in an amount of from about 5% up to about 40% by weight.
Claim 4
Dependent Claim
11 words
A composition according to claim 1, further comprising a lubricating agent.
Claim 5
Dependent Claim
11 words
A composition according to claim 3, further comprising a coupling agent.
Claim 6
Dependent Claim
11 words
A composition according to claim 1, further comprising a passavating agent.
Claim 7
Dependent Claim
10 words
A composition according to claim 1, further comprising a biocide.
Claim 8
Dependent Claim
32 words
A composition according to claim 1, wherein said orthophosphoric acid salt is an alkali metal salt of orthophosphoric acid, an amine salt of orthophosphoric acid or an alkanolamine salt of orthophosphoric acid.
Claim 9
Dependent Claim
25 words
A composition according to claim 7, wherein said orthophosphoric acid salt is the diethanolamine salt of orthophosphoric acid or the triethanolamine salt of orthophosphoric acid.
Claim 10
Dependent Claim
27 words
A composition according to claim 1, wherein said salt of orthophosphoric acid is present in an amount of from about 3% up to about 8% by weight.
Claim 11
Dependent Claim
25 words
A composition according to claim 8, wherein said salt of orthophosphoric acid is present in an amount of from about 4% up to about 6%.
Claim 12
Dependent Claim
13 words
A composition according to claim 1, wherein said dibasicdioic acid comprises dodecanedioic acid.
Claim 13
Dependent Claim
15 words
A composition according to claim 11, wherein said dibasicdioic acid consists essentially of dodecanedioic acid.
Claim 14
Dependent Claim
25 words
A composition according to claim 1, wherein said dibasicdioic acid is present in an amount of from about 1.0% up to about 2.0% by weight.
Claim 15
Dependent Claim
26 words
A composition according to claim 1, wherein said chelating agent is ethylenediamino-tetraacetic acid, the trisodium salt of N-hydroxyethyl ethylenediamino triacetic acid, gluconic acid or citric acid.
Claim 16
Dependent Claim
13 words
A composition according to claim 14, wherein said chelating agent is ethylenediamino-tetraacetic acid.
Claim 17
Dependent Claim
28 words
A composition according to claim 2, wherein said chelating agent is present in an amount of from about 1% up to about 5% by weight of the composition.
Claim 18
Dependent Claim
28 words
A composition according to claim 16, wherein said chelating agent is present in an amount of from about 2% up to about 4% by weight of the composition.
Claim 19
Dependent Claim
20 words
A composition according to claim 1, wherein said neutralizing base is an alkylamine, an alkanolamine, or an alkali metal hydroxide.
Claim 20
Dependent Claim
21 words
A composition according to claim 18, wherein said neutralizing base is diethanolamine, triethanolamine, dipropanolamine, tripropanolamine, dibutanolamine or tributanolamine or mixtures thereof.
Claim 21
Dependent Claim
14 words
A composition according to claim 19, wherein said neutralizing base is diethanolamine or triethanolamine.
Claim 22
Dependent Claim
28 words
A composition according to claim 2, wherein said neutralizing base is present in an amount of from about 10% up to about 30% by weight of the composition.
Claim 23
Dependent Claim
28 words
A composition according to claim 1, wherein said neutralizing base is present in an amount of from about 20% up to about 30% by weight of the composition.
Claim 24
Dependent Claim
50 words
A composition according to claim 5, wherein said passavating agent has the general formula M.sub.x (M'O.sub.y).sub.z wherein M is a Group IA metal, M' is a Group VIB metal or boron, and x, y and z are integers of such value as is required to form an electrically neutral compound.
Claim 25
Dependent Claim
18 words
A composition according to claim 23, wherein said passavating agent is sodium tetraborate, sodium perchromate, or sodium permolybdate.
Claim 26
Dependent Claim
28 words
A composition according to claim 5, wherein said passavating agent is present in an amount of from about 0.2% up to about 2.0% by weight of the concentrate.
Claim 27
Dependent Claim
25 words
A composition according to claim 6, wherein said biocide is an alkanolamine, a polyethoxylated alkanolamine, a polymeric quaternary ammonium compound, triazine, sodium(1-hydroxy-pyridine-2-thione) or trishydroxymethyl nitromethane.
Claim 28
Dependent Claim
15 words
A composition according to claim 26, wherein said biocide is a polymeric quaternary ammonium compound.
Claim 29
Dependent Claim
13 words
A composition according to claim 27, wherein said biocide is poly(oxyethylene(dimethylimino) ethylene dichloride).
Claim 30
Dependent Claim
24 words
A composition according to claim 6, wherein said biocide is present in an amount of from about 0.3% up to about 3.0% by weight.
Claim 31
Dependent Claim
22 words
A composition according to claim 29, wherein said biocide is present in an amount of from about 0.5% up to about 2%.
Claim 32
Dependent Claim
17 words
A composition according to claim 30, wherein said biocide is present in an amount of about 1%.
Claim 33
Dependent Claim
32 words
A composition according to claim 3, wherein said lubricating agent is an ethoxylated ester, a short chain water soluble amide, a polyethylene glycol ester, or a block copolymer of polyoxyethylene and polyoxypropylene.
Claim 34
Dependent Claim
20 words
A composition according to claim 32, wherein said lubricating agent is a polyethylene glycol stearate or a polyethylene glycol laurate.
Claim 35
Dependent Claim
23 words
A composition according to claim 33, wherein said polyethylene glycol stearate or said polyethylene glycol laurate has a molecular weight of about 600.
Claim 36
Dependent Claim
17 words
A composition according to claim 32, wherein said lubricating agent is a short chain water soluble amide.
Claim 37
Dependent Claim
16 words
A composition according to claim 33, wherein said short chain water soluble amide is diethanolamine isononanoamide.
Claim 38
Dependent Claim
14 words
A composition according to claim 3, wherein said lubricating agent has inverse water solubility.
Claim 39
Dependent Claim
18 words
A composition according to claim 37, wherein said lubricating agent is a block copolymer of polyoxyethylene and polyoxypropylene.
Claim 40
Dependent Claim
26 words
A composition according to claim 38, wherein said lubricating agent is an 80% polyoxypropylene 20% polyoxyethylene block copolymer or a 60% polyoxypropylene, 40% polyoxyethylene block copolymer.
Claim 41
Dependent Claim
25 words
A composition according to claim 3, wherein said lubricating agent is present in an amount of from about 1% up to about 10% by weight.
Claim 42
Dependent Claim
23 words
A composition according to claim 40, wherein said lubricating agent is present in an amount of from about 2% up to about 7%.
Claim 43
Dependent Claim
23 words
A composition according to claim 41, wherein said lubricating agent is present in an amount of from about 3% up to about 5%.
Claim 44
Dependent Claim
30 words
A composition according to claim 4, wherein said coupling agent is a fatty acid, a fatty acid soap, a fatty amide, a glycol ether, or a water soluble ethoxylated alcohol.
Claim 45
Dependent Claim
21 words
A composition according to claim 43, wherein said coupling agent is a fatty acid having from 6 to 10 carbon atoms.
Claim 46
Dependent Claim
13 words
A composition according to claim 44, wherein said coupling agent is caprylic acid.
Claim 47
Dependent Claim
25 words
A composition according to claim 4, wherein said coupling agent is present in an amount of from about 0.5% up to about 8% by weight.
Claim 48
Dependent Claim
23 words
A composition according to claim 46, wherein said coupling agent is present in an amount of from about 2% up to about 6%.
Claim 49
Dependent Claim
23 words
A composition according to claim 47, wherein said coupling agent is present in an amount of from about 3% up to about 5%.
Claim 50
Dependent Claim
66 words
An aqueous alkaline metalworking fluid composition comprising, by weight, from about 0.03% up to about 1.0% of a salt of orthophosphoric acid; from about 0.02% up to about to 0.2% of a dibasicdioic acid; from about 0.03% up to about to 0.5% of a chelating agent; and, from about 0.15% up to about to 4.0% of a neutralizing base, said composition being essentially free of phosphates.
Claim 51
Dependent Claim
66 words
An aqueous alkaline metalworking fluid composition comprising, by weight, from about 0.03% up to about 1.0% of a salt of orthophosphoric acid; from about 0.02% up to about to 0.2% of a dibasicdioic acid; from about 0.03% up to about to 0.5% of a chelating agent; and, from about 0.15% up to about to 4.0% of a neutralizing base, said composition being essentially free of phosphates.
Claim 52
Dependent Claim
18 words
The composition of claim 49, further comprising from about 0.03% up to about 1.0% of a lubricating agent.
Claim 53
Dependent Claim
18 words
The composition of claim 49, further comprising from about 0.004% up to about 0.2% of a passavating agent.
Claim 54
Dependent Claim
18 words
The composition of claim 49, further comprising from about 0.015% up to about 0.8% of a coupling agent.
Claim 55
Dependent Claim
17 words
The composition of claim 49, further comprising from about 0.0099% up to about 0.3% of a biocide.
Claim 56
Independent Claim
63 words
A method of preventing corrosion of ferrous metals during metalworking operations comprising the step of utilizing as a metalworking fluid an aqueous alkaline composition comprising a salt of orthophosphoric acid, a dibasicdioic acid in an amount of from about 0.02% up to about 0.2% by weight of the fluid, a chelating agent, and a neutralizing base, said composition being essentially free of phosphonates.
Claim 57
Independent Claim
63 words
A method of preventing corrosion of ferrous metals during metalworking operations comprising the step of utilizing as a metalworking fluid an aqueous alkaline composition comprising a salt of orthophosphoric acid, a dibasicdioic acid in an amount of from about 0.02% up to about 0.2% by weight of the fluid, a chelating agent, and a neutralizing base, said composition being essentially free of phosphonates.
Claim 58
Dependent Claim
12 words
The method of claim 54, said composition further comprising a lubricating agent.
Claim 59
Dependent Claim
12 words
The method of claim 55, said composition further comprising a coupling agent.
Claim 60
Dependent Claim
12 words
The method of claim 54, said composition further comprising a passavating agent.
Claim 61
Dependent Claim
11 words
The method of claim 54, said composition further containing a biocide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |