US4508767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for forming a corrosion resistant coating
Assignee: Dai Nippon Toryo Co Ltd
•
Filing: 1983-11-30
•
Granted: 1985-04-02
•
Expires: 2003-11-30
Abstract
Abstract A process for forming a moisture resistant coating, which comprises: (i) a step of priming a coating composition on a substrate and drying it to form a prime coat, (ii) a step of coating thereon a radical-polymerizable and oxidation-polymerizable, room temperature solventless coating composition containing a scaly pigment and polymerizing it to form a cured intermediate coat, and (iii) a step of finish coating thereon an air-drying finish coating composition and drying it to form an finish coat.
Inventors
- 👤 Sadakazu Hokamura
- 👤 Toshio Shinohara
- 👤 Mitsutoshi Aritomi
- 👤 Yuji Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:12
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/56; B05D7/57; B05D7/574; B05D7/576; B05D2202/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
178 words
A process for forming a moisture resistant coating film, which comprises: (i) priming a coating composition on a substrate and drying it to form a prime coat; (ii) coating thereon a radical-polymerizable and oxidation-polymerizable, room temperature solventless coating composition composed essentially of: A. from 30 to 90% by weight of a resin component comprising (A) from 30 to 70% by weight of an oil-modified alkyd resin having an oil length of from 30 to 70% and modified with an α,β-unsaturated monocarboxylic acid selected from the group consisting of sorbic acid, crotonic acid and 2-(β-furyl)acrylic acid, the content of the α,β-unsaturated monocarboxylic acid in the alkyd resin being from 0.5 to 30% by weight, and (B) from 70 to 30% by weight of a polymerizable monomer in which the ingredient (A) is dissolved, B. from 70 to 10% by weight of a scaly pigment, and C. an effective amount of a curing catalyst, and polymerizing it to form a cured intermediate coat; and (iii) coating thereon an air-drying finish coating composition and drying it to form a finish coat.
Claim 2
Dependent Claim
178 words
A process for forming a moisture resistant coating film, which comprises: (i) priming a coating composition on a substrate and drying it to form a prime coat; (ii) coating thereon a radical-polymerizable and oxidation-polymerizable, room temperature solventless coating composition composed essentially of: A. from 30 to 90% by weight of a resin component comprising (A) from 30 to 70% by weight of an oil-modified alkyd resin having an oil length of from 30 to 70% and modified with an α,β-unsaturated monocarboxylic acid selected from the group consisting of sorbic acid, crotonic acid and 2-(β-furyl)acrylic acid, the content of the α,β-unsaturated monocarboxylic acid in the alkyd resin being from 0.5 to 30% by weight, and (B) from 70 to 30% by weight of a polymerizable monomer in which the ingredient (A) is dissolved, B. from 70 to 10% by weight of a scaly pigment, and C. an effective amount of a curing catalyst, and polymerizing it to form a cured intermediate coat; and (iii) coating thereon an air-drying finish coating composition and drying it to form a finish coat.
Claim 3
Dependent Claim
53 words
The process according to claim 1, wherein the primer coating composition is selected from the group consisting of an oil-type coating composition, an alkyd resin type coating composition, an epoxy resin type coating composition, a polyurethane resin type coating composition, a chlorinated rubber type coating composition and a vinyl resin type coating composition.
Claim 4
Dependent Claim
26 words
The process according to the claim 1, wherein the scaly pigment is glass flake, micaceous iron oxide, aluminum powder, talc or mica, or a mixture thereof.
Claim 5
Dependent Claim
58 words
The process according to claim 1, wherein the air-drying finish coating composition is a solvent-type coating composition selected from the group consisting of an oil-type coating composition, an alkyd resin type coating composition, an epoxy resin type coating composition, a polyurethane resin type coating composition, a chlorinated rubber type coating composition and a vinyl resin type coating composition.
Claim 6
Dependent Claim
114 words
The process according to claim 1, wherein the air-drying finish coating composition is a radical-polymerizable and oxidation polymerizable, room temperature solventless coating composition which is composed essentially of a curing catalyst and a resin component comprising (A) from 30 to 70% by weight of an oil-modified alkyd resin having an oil length of from 30 to 70% and modified with an α,β-unsaturated monocarboxylic acid selected from the group consisting of sorbic acid, crotonic acid and 2-(β-furyl)acrylic acid, the content of the α,β-unsaturated monocarboxylic acid in the alkyd resin being from 0.5 to 30% by weight, and (B) from 70 to 30% by weight of a polymerizable monomer in which the ingredient (A) is dissolved.
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) | 1988-04-01 | 1988-10-01 | 1989-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-01 | 1992-10-01 | 1993-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-01 | 1996-10-01 | 1997-04-02 | $7700.00 | Window Closed / Lapsed |