US3791850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formable, weldable coated article of manufacture
Assignee: Monsanto Co
•
Filing: 1971-08-30
•
Granted: 1974-02-12
•
Expires: 1991-08-30
Abstract
Abstract Disclosed herein are formable, weldable articles of manufacture comprising a metal sheet coated with a first coating of metal phosphate and a second coating comprising a blend of polyvinyl butyral and phenolic resins in at least one non-corrosive organic solvent which is a solvent for each component of the resin blend having dispersed therein a basic zinc chromate and a particular atomized aluminum powder.
Inventors
- 👤 R Deshay
- 👤 R Isaksen
- 👤 A Sahni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:35
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/163; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/26; Y10T428/27; Y10T428/273; Y10T428/31504; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
54 words
The article of manufacture of claim 1 wherein the polyvinyl butyral resin in the second coating has a polyvinyl alcohol content of from about 5 to about 30 percent by weight, a residual polyvinyl acetate content of less than 10 percent by weight and a weight average molecular weight of from 30,000 to 270,000.
Claim 2
Dependent Claim
21 words
about 20 to about 50 percent by weight of a phenolic resole resin based on the weight of the total resin,
Claim 3
Dependent Claim
22 words
about 0 to about 30 percent by weight of a basic zinc chromate based on the weight of the total resin, and,
Claim 4
Dependent Claim
35 words
The article of manufacture of claim 1, wherein the atomized aluminum powder has an average particle size of about 10 microns with a particle size distribution of from about 5 microns to about 20 microns.
Claim 5
Dependent Claim
16 words
The article of manufacture of claim 1 wherein the metal sheet is a ferrous metal sheet.
Claim 6
Dependent Claim
24 words
about 30 to about 60 percent by volume concentration of an atomized aluminum powder based on the dry film volume of the second coating.
Claim 7
Dependent Claim
14 words
The article of manufacture of claim 4 wherein the coated metal sheet is spot-weldable.
Claim 8
Dependent Claim
32 words
The article of manufacture of claim 4 having a T bend capability of 1 to 2T, a reverse impact of at least 160 inch pounds and a pencil hardness less than 3H.
Claim 9
Dependent Claim
25 words
The article of manufacture of claim 1 wherein the first coating is iron phosphate in amounts ranging from about 15 mg./sq.ft. to about 50 mg./sq.ft.
Claim 10
Dependent Claim
24 words
The article of manufacture of claim 1 wherein the second coating has been cured at a temperature in the range of 350* to 450*F.
Claim 11
Dependent Claim
22 words
ThE article of manufacture of claim 1 wherein the second coating has a thickness in the range of 0.3 to 0.7. mil.
References Cited (Backward Citations)
US2270662A
Cited
US2411590A
Cited
US2839438A
Cited
US2881091A
Cited
US3051586A
Cited
US3196039A
Cited
US3210219A
Cited
US3325432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |