Patent US4132572A successfully refreshed from Google Patents.
US4132572A
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Compositions for treatment of metallic surfaces by means of fluorophosphate salts
Assignee: Diversey Wyandotte Corp
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Filing: 1977-04-21
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Granted: 1979-01-02
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Expires: 1997-04-21
Abstract
Abstract Steel, aluminum and aluminum alloys, zinc and zinc alloys are treated to improve corrosion resistance with an aqueous solution of a fluorophosphate salt to passivate the metal surface, before or after phosphatizing and prior to painting.
Inventors
- 👤 Bernard Parant
- 👤 Louis Cot
- 👤 William Granier
- 👤 Jean-Henri Durand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:50
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/34; C23C22/36; C23C22/60; C23C22/82; C23C22/83
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
120 words
A composition at a pH of about 5 to 13, for the treatment of metal surfaces, consisting essentially of water and about 0.25 to 100 g per liter of at least one fluorophosphate salt selected from the compounds of the following formulas and hydrates thereof: (a) M 2 I PO 3 F (b) Li M I PO 3 F (c) Na M I PO 3 F (d) M II PO 3 F (e) M 2 I M II (PO 3 F) 2 , and (f) M 2 III (PO 3 F) 3 wherein M I represents Na, K, Rb, Cs and NH 4 , M II represents Cd, Mn, Ni and Zn and M III represents Cr, Fe and Al.
Claim 2
Dependent Claim
120 words
A composition at a pH of about 5 to 13, for the treatment of metal surfaces, consisting essentially of water and about 0.25 to 100 g per liter of at least one fluorophosphate salt selected from the compounds of the following formulas and hydrates thereof: (a) M 2 I PO 3 F (b) Li M I PO 3 F (c) Na M I PO 3 F (d) M II PO 3 F (e) M 2 I M II (PO 3 F) 2 , and (f) M 2 III (PO 3 F) 3 wherein M I represents Na, K, Rb, Cs and NH 4 , M II represents Cd, Mn, Ni and Zn and M III represents Cr, Fe and Al.
Claim 3
Dependent Claim
9 words
A composition according to claim 1 containing a surfactant.
Claim 4
Dependent Claim
11 words
A composition according to claim 1 containing an alkali metal hydroxide.
Claim 5
Dependent Claim
108 words
A solid premix concentrate consisting essentially of 10 to 90% by weight of one or more fluorophosphate salts of the following formulas and hydrates thereof: (a) M 2 I PO 3 F (b) LiM I PO 3 F (c) NaM I PO 3 F (d) M II PO 3 F (e) M 2 I M II (PO 3 F) 2 , and (f) M 2 III (PO 3 F) 3 wherein M I represents Na, K, Rb, Cs and NH 4 , M II represents Cd, Mn, Ni and Zn, and M III represents Cr, Fe and Al, in admixture with a solid particulate alkali metal hydroxide base.
Claim 6
Dependent Claim
108 words
A solid premix concentrate consisting essentially of 10 to 90% by weight of one or more fluorophosphate salts of the following formulas and hydrates thereof: (a) M 2 I PO 3 F (b) LiM I PO 3 F (c) NaM I PO 3 F (d) M II PO 3 F (e) M 2 I M II (PO 3 F) 2 , and (f) M 2 III (PO 3 F) 3 wherein M I represents Na, K, Rb, Cs and NH 4 , M II represents Cd, Mn, Ni and Zn, and M III represents Cr, Fe and Al, in admixture with a solid particulate alkali metal hydroxide base.
Claim 7
Dependent Claim
19 words
A concentrate according to claim 4 in which the salt is potassium fluorophosphate and the base is potassium hydroxide.
Claim 8
Dependent Claim
16 words
A concentrate according to claim 4 in which the salt is potassium fluorophosphate or sodium fluorophosphate.
Claim 9
Dependent Claim
20 words
A concentrate according to claim 4 containing a total of 0.5 to 20% by weight of one or more surfactants.
Claim 10
Dependent Claim
124 words
A composition, for the treatment of metal surfaces, consisting essentially of water, about 0.25 to 100 g per liter of at leasst one fluorophosphate salt selected from the compounds of the following formulas and hydrates thereof: (a) M 2 I PO 3 F (b) Li M I PO 3 F (c) Na M I PO 3 F (d) M II PO 3 F (e) M 2 I M II (PO 3 F) 2 , and (f) M 2 III (PO 3 F) 3 wherein M I represents Na, K, Rb, Cs and NH 4 , M II represents Cd, Mn, Ni and Zn and M III represents Cr, Fe and Al, and about 0.04 to 4 g per liter of an alkali metal hydroxide.
Claim 11
Dependent Claim
124 words
A composition, for the treatment of metal surfaces, consisting essentially of water, about 0.25 to 100 g per liter of at leasst one fluorophosphate salt selected from the compounds of the following formulas and hydrates thereof: (a) M 2 I PO 3 F (b) Li M I PO 3 F (c) Na M I PO 3 F (d) M II PO 3 F (e) M 2 I M II (PO 3 F) 2 , and (f) M 2 III (PO 3 F) 3 wherein M I represents Na, K, Rb, Cs and NH 4 , M II represents Cd, Mn, Ni and Zn and M III represents Cr, Fe and Al, and about 0.04 to 4 g per liter of an alkali metal hydroxide.
Claim 12
Dependent Claim
120 words
A composition at a pH of about 10 to 13, for the treatment of metal surfaces, consisting essentially of water and about 0.25 to 100 g per liter of at least one fluorophosphate salt selected from the compounds of the following formulas and hydrates thereof: (a) M 2 I PO 3 F (b) Li M I PO 3 F (c) Na M I PO 3 F (d) M II PO 3 F (e) M 2 I M II (PO 3 F) 2 , and (f) M 2 III (PO 3 F) 3 wherein M I represents Na, K, Rb, Cs and NH 4 , M II represents Cd, Mn, Ni and Zn and M III represents Cr, Fe and Al.
Claim 13
Dependent Claim
120 words
A composition at a pH of about 10 to 13, for the treatment of metal surfaces, consisting essentially of water and about 0.25 to 100 g per liter of at least one fluorophosphate salt selected from the compounds of the following formulas and hydrates thereof: (a) M 2 I PO 3 F (b) Li M I PO 3 F (c) Na M I PO 3 F (d) M II PO 3 F (e) M 2 I M II (PO 3 F) 2 , and (f) M 2 III (PO 3 F) 3 wherein M I represents Na, K, Rb, Cs and NH 4 , M II represents Cd, Mn, Ni and Zn and M III represents Cr, Fe and Al.
Claim 14
Dependent Claim
31 words
A composition at a pH of about 5 to 13, for the treatment of metal surfaces, consisting essentially of water and about 0.25 to 100 g per liter of potassium fluorophosphate.
Claim 15
Dependent Claim
31 words
A composition at a pH of about 5 to 13, for the treatment of metal surfaces, consisting essentially of water and about 0.25 to 100 g per liter of potassium fluorophosphate.
References Cited (Backward Citations)
GB843054A
Cited
US3342687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |