US3884705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-corrosion weldable coating compositions
Assignee: Occidental Chemical Corp
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Filing: 1972-04-19
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Granted: 1975-05-20
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Expires: 1992-04-19
Abstract
Abstract A composition suitable for the protection of corrodible metal surfaces which comprises a binder and a filler. The filler is constituted of a mixture of a comminuted refractory ferro alloy and a non-metallic inhibitor such as zinc chromate or zinc yellow, the latter being present in an amount sufficient to enhance the corrosion protection and weldability of the coated metal surfaces. Various binders, both inorganic and organic, may be used and the filler is preferably a mixture of a major amount of ferrophos (Fe2P) and a minor amount, e.g., about 10 percent by weight of the filler, of zinc yellow.
Inventors
- 👤 Noel D Blair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:38
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/226; C; C09; C09D; C09D5/00; C09D5/08; C09D5/082; C09D5/084
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
IN AN ANTI-CORROSION, WELDABLE COATING COMPOSITION CONTAINING FROM ABOUT 3 TO 80 PERCENT BY WEIGHT OF A BINDER, AND FROM ABOUT 20 TO 97 PERCENT BY WEIGHT OF A FILLER CONTAINING FROM ABOUT 60 TO 99 PERCENT BY WEIGHT OF SAID FILLER A COMMINUTED REFRACTORY FERRO ALLOY AND FROM ABOUT 0 TO 10 PERCENT BY WEIGHT OF ZINC DUST, THE IMPROVEMENT WHICH COMPRISES INCLUDING AS A COMPONENT IN SAID FILLER FROM ABOUT 1 TO 40 PERCENT OF AT LEAST ONE NON-METLLIC CORROSION INHIBITOR SELECTED FROM THE GROUP CONSISTING OG CHROMATES, NITRITES, PHOSPHATES, MOLYBDATES, TUNGSTATES, SILICATES AND BENZOATES.
Claim 2
Dependent Claim
97 words
IN AN ANTI-CORROSION, WELDABLE COATING COMPOSITION CONTAINING FROM ABOUT 3 TO 80 PERCENT BY WEIGHT OF A BINDER, AND FROM ABOUT 20 TO 97 PERCENT BY WEIGHT OF A FILLER CONTAINING FROM ABOUT 60 TO 99 PERCENT BY WEIGHT OF SAID FILLER A COMMINUTED REFRACTORY FERRO ALLOY AND FROM ABOUT 0 TO 10 PERCENT BY WEIGHT OF ZINC DUST, THE IMPROVEMENT WHICH COMPRISES INCLUDING AS A COMPONENT IN SAID FILLER FROM ABOUT 1 TO 40 PERCENT OF AT LEAST ONE NON-METLLIC CORROSION INHIBITOR SELECTED FROM THE GROUP CONSISTING OG CHROMATES, NITRITES, PHOSPHATES, MOLYBDATES, TUNGSTATES, SILICATES AND BENZOATES.
Claim 3
Dependent Claim
38 words
The compoSition of claim 1 wherein the binder constitutes from about 3 to about 50 percent by weight and the filler is present in an amount within the range of about 40 to about 93 percent by weight.
Claim 4
Dependent Claim
27 words
The composition of claim 1 wherein the comminuted refractory ferro alloy is present in the amount of at least about 80 percent by weight of the filler.
Claim 5
Dependent Claim
30 words
The composition of claim 3 wherein the comminuted refractory ferro alloy is present in an amount within the range of about 85 to 95 percent by weight of the filler.
Claim 6
Dependent Claim
13 words
The composition of claim 1 wherein the refractory ferro alloy is ferro phosphorous.
Claim 7
Dependent Claim
33 words
The composition of claim 5 wherein the ferro-phosphorus has an average particle size within the range of about 1 to 10 microns and the surface of the ferro-phosphorus are activated by acid washing.
Claim 8
Dependent Claim
12 words
The composition of claim 5 wherein the non-metallic inhibitor is zinc chromate.
Claim 9
Dependent Claim
23 words
The composition of claim 7 wherein the zinc chromate has an average particle size within the range of about 2 to 10 microns.
Claim 10
Dependent Claim
12 words
The composition of claim 5 wherein the non-metallic inhibitor is zinc yellow.
Claim 11
Dependent Claim
24 words
The composition of claim 9 wherein the zinc yellow has an average particle size of within the range of about 2 to 10 microns.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |