US3661622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving resistance to corrosion of metal surfaces and resultant article
Assignee: ConocoPhillips Co
•
Filing: 1970-03-16
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Granted: 1972-05-09
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Expires: 1990-03-16
Abstract
Abstract A method of improving resistance to corrosion of metal surfaces is disclosed, wherein said method comprises: A. APPLYING TO THE METAL SURFACE A COMPOSITION COMPRISING (1) A MAJOR AMOUNT (E.G. AT LEAST 75 WEIGHT PERCENT) OF A THIXOTROPIC, GREASE-LIKE COMPOSITION CONSISTING ESSENTIALLY OF A NON-VOLATILE DILUENT, AN OIL-SOLUBLE DISPERSING AGENT AND AN ALKALINE EARTH METAL CARBONATE AND (2) A MINOR AMOUNT (E.G. 0.1 TO 25 WEIGHT PERCENT) OF A POLYMER, AND B. APPLYING TO THE COATED METAL SURFACE A CONVENTIONAL PAINT. An important feature is the use of the composition described in step (a) as a primer coating.
Inventors
- 👤 Lynn C Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:37
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C09; C09D; C09D5/00; C09D5/08; B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; B05D7/50; B05D7/52; B05D7/54; C10M2201/00; C10M2201/02; C10M2201/06; C10M2201/062; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/026; C10M2205/14; C10M2205/16; C10M2205/17; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/04; C10M2207/046; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/16; C10M2207/18; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/12; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/10; C10N2070/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31551; Y10T428/31573; Y10T428/31576; Y10T428/31587; Y10T428/31678; Y10T428/31714; Y10T428/31786; Y10T428/31797; Y10T428/31801; Y10T428/31844; Y10T428/31855; Y10T428/31859
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
80 words
from about 0.1 to about 25 parts polymer, said polymer being characterized as having a crystallinity of less than 50 percent, a molecular weight in the range of from about 3,000 to about 1 million and a high solubility in predominantly aliphatic hydrocarbon solvents, B. allowing the coated metal surface to become substantially free of any volatile solvent which may be present, and C. applying to the coated metal surface a conventional paint wherein said paint adheres to said primer.
Claim 2
Dependent Claim
19 words
The method of claim 1 wherein the oil-soluble dispersing agent is a sulfonic acid, or a metal salt thereof.
Claim 3
Dependent Claim
80 words
from about 0.2 to about 10 parts polymer, said polymer being characterized as having a crystallinity of less than 50 percent, a molecular weight in the range of from about 3,000 to about 1 million and a high solubility in predominantly aliphatic hydrocarbon solvents, B. allowing the coated metal surface to become substantially free of any volatile solvent which may be present, and C. applying to the coated metal surface a conventional paint wherein said paint adheres to said primer.
Claim 4
Dependent Claim
78 words
from about 0.1 to about 25 parts polymer, said polymer being characterized as having a crystallinity of less than 50 percent, a molecular weight in the range of from about 3,000 to about 1 million and a high solubility in predominantly aliphatic hydrocarbon solvents, B. allowing the coated substrate to become substantially free of any volatile solvent which may be present, and C. applying to the coated substrate a conventional paint wherein said paint adheres to said primer.
Claim 5
Dependent Claim
44 words
from about 0.1 to about 25 parts polymer, said polymer being characterized as having a crystallinity of less than 50 percent, a molecular weight in the range of from about 3,000 to about 1 million and a high solubility in predominantly aliphatic hydrocarbon solvents.
Claim 6
Dependent Claim
14 words
The method of claim 2 wherein the alkaline earth metal carbonate is calcium carbonate.
Claim 7
Dependent Claim
26 words
The method of claim 3 wherein the polymer is selected from the group consisting of polyterpenes, amorphous polypropylenes, low molecular weight polyethylenes, and ethylene-vinyl acetate copolymers.
Claim 8
Dependent Claim
31 words
The method of claim 4 wherein the conventional paint is selected from the group consisting of two-component amine cured epoxy, two-component urethane, alkyd enamel, phenolic enamel, acrylic water emulsion, and vinyl.
Claim 9
Dependent Claim
11 words
The method of claim 5 wherein the polymer is a polyterpene.
Claim 10
Dependent Claim
12 words
The method of claim 5 wherein the polymer is an amorphous polypropylene.
Claim 11
Dependent Claim
14 words
The method of claim 5 wherein the polymer is a low molecular weight polyethylene.
Claim 12
Dependent Claim
13 words
The method of claim 5 wherein the polymer is an ethylene-vinyl acetate copolymer.
Claim 13
Independent Claim
29 words
A method of improving resistance to corrosion of metal surfaces, wherein the method comprises: A. applying to the metal surface a primer composition which comprises, in parts by weight:
Claim 14
Dependent Claim
14 words
The method of claim 10 wherein the nonvolatile diluent is a mineral lubricating oil.
Claim 15
Dependent Claim
26 words
The method of claim 11 wherein the polymer is selected from the group consisting of polyterpenes, amorphous polypropylenes, low molecular weight polyethylenes, and ethylene-vinyl acetate copolymers.
Claim 16
Dependent Claim
11 words
The method of claim 12 wherein the polymer is a polyterpene.
Claim 17
Dependent Claim
12 words
The method of claim 12 wherein the polymer is an amorphous polypropylene.
Claim 18
Dependent Claim
14 words
The method of claim 12 wherein the polymer is a low molecular weight polyethylene.
Claim 19
Dependent Claim
13 words
The method of claim 12 wherein the polymer is an ethylene-vinyl acetate copolymer.
Claim 20
Dependent Claim
31 words
The method of claim 12 wherein the conventional paint is selected from the group consisting of two-component amine cured epoxy, two-component urethane, alkyd enamel, phenolic enamel, acrylic water emulsion, and vinyl.
Claim 21
Dependent Claim
11 words
The method of claim 17 wherein the polymer is a polyterpene.
Claim 22
Dependent Claim
12 words
The method of claim 17 wherein the polymer is an amorphous polypropylene.
Claim 23
Dependent Claim
14 words
The method of claim 17 wherein the polymer is a low molecular weight polyethylene.
Claim 24
Dependent Claim
13 words
The method of claim 17 wherein the polymer is an ethylene-vinyl acetate copolymer.
Claim 25
Independent Claim
22 words
A method of coating a substrate which comprises: A. applying to the substrate a primer composition which comprises in parts by weight:
Claim 26
Dependent Claim
30 words
A metal article, one surface of which has been coated with a primer composition and a conventional paint adhered to said primer, said primer composition comprising in parts by weight:
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |