US3873349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating surfaces of metals
Assignee: JFE Engineering Corp
•
Filing: 1972-03-13
•
Granted: 1975-03-25
•
Expires: 1992-03-13
Abstract
Abstract Both higher corrosion resistance and paint adherence are given to film formed on the surfaces of metals by treating the surfaces with aqueous solution of one or more materials selected from the group consisting of water soluble vinyl monomer, water soluble high polymer and then irradiating ionizing radioactive rays on the nearly dried surface film. When a water soluble inorganic compound is mixed with the above mentioned aqueous solution, the film properties are greatly improved.
Inventors
- 👤 Tadao Kimura
- 👤 Atuhiko Murao
- 👤 Toshigoro Kuwahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:29
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D3/00; B05D3/06; B05D3/068; B05D7/142; B05D2401/00; B05D2401/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
A METHOD OF COATING METAL SUBSTRATED BY APPLYING A COMPOSITION COMPRISING AN AQUEOUS SOLYTION OF WATER SOLUBLE VINYL MONOMER AND AN INORGANIC IONIC MATERIAL TO SAID METAL SUBSSTRATES, SAID INORGAINC IONIC MATERIAL CONTAINING A CATION SELECTED FROM THE GROUP CONSISTING OF CA, NG, ZN, CR, AL, FE AND NI; OR AN ANION SELECTED FROM THE GROUP CONSISTING OF CHROMATE, BICHROMATE, PHOSPHATE, BORATE, NITRATE, SULFATE, TITANATE, PERMANGANATE, FLUSILICATE AND FLUOBORATE; OR MIXTURES THEREOF; DRYING COATED SUBSTRATES, AND IRRADIATING THE DRIED COMPOSITION ON THE METAL SUBSTRATES WITH IONIZING RADIATION.
Claim 2
Independent Claim
87 words
A METHOD OF COATING METAL SUBSTRATED BY APPLYING A COMPOSITION COMPRISING AN AQUEOUS SOLYTION OF WATER SOLUBLE VINYL MONOMER AND AN INORGANIC IONIC MATERIAL TO SAID METAL SUBSSTRATES, SAID INORGAINC IONIC MATERIAL CONTAINING A CATION SELECTED FROM THE GROUP CONSISTING OF CA, NG, ZN, CR, AL, FE AND NI; OR AN ANION SELECTED FROM THE GROUP CONSISTING OF CHROMATE, BICHROMATE, PHOSPHATE, BORATE, NITRATE, SULFATE, TITANATE, PERMANGANATE, FLUSILICATE AND FLUOBORATE; OR MIXTURES THEREOF; DRYING COATED SUBSTRATES, AND IRRADIATING THE DRIED COMPOSITION ON THE METAL SUBSTRATES WITH IONIZING RADIATION.
Claim 3
Dependent Claim
38 words
Process of claim 1, wherein said water soluble vinyl monomer is selected from the group consisting of unsaturated acid, metallic salt of said unsaturated acids having divalent atom, unsaturated acid amide, unsaturated acid nitrile, and vinyl ester phosphate.
Claim 4
Dependent Claim
52 words
Process of claim 2, wherein said unsaturate acid is maleic acid, crotonic acid, itaconic acid, acrylic acid or metacrylic acid; wherein said unsaturated acid amide is acrylic amide or methacrylic amide and said unsaturated acid nitrile is acrylonitrile; and wherein said vinyl ester phosphate is 2-acid phosphoxyethyl methacrylate or 3-chloro-2-acid phosphoxypropyl methacrylate.
Claim 5
Dependent Claim
23 words
Process of claim 1, wherein said ionizing radioactive rays includes proton, alpha rays, beta rays, gamma rays, x rays, and accelerated electron beam.
Claim 6
Dependent Claim
25 words
Process of claim 1, wherein the mixing ratio of said organic monomer to inorganic material is within the range of 9:1 to 1:9 by weight.
Claim 7
Dependent Claim
12 words
Process of claim 5, wherein said mixing ratio is 4:6 by weight.
Claim 8
Dependent Claim
30 words
Process of claim 4, wherein said accelerating electron beam is employed with a beam voltage of between 150 KV and 500 KV, and beam current is more than 25 mA.
Claim 9
Dependent Claim
12 words
Process of claim 7, wherein said voltage is less than 300 KV.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |