US4499143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer automative paint system
Assignee: BASF Corp
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Filing: 1983-08-26
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Granted: 1985-02-12
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Expires: 2003-08-26
Abstract
Abstract A transparent topcoat coating composition is described comprising a thermoplastic or thermosetting resin material containing low pigment to binder ratio of iron oxide encapsulated mica particles. When used in a multicoat coating process as a transparent topcoat, an article is produced which not only produces improved "metallic" color effects, but is stable to the elements as well.
Inventors
- 👤 Sol Panush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:21
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/10; B; B05; B05D; B05D5/00; B05D5/06; B05D5/067; B05D5/068; F; F16; F16B; F16B2/00; F16B2/005; Y; Y10; Y10S; Y10S106/00; Y10S106/03; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
A substrate material coated with at least two layers of polymer including a base coat comprising a pigmented thermosetting or thermoplastic resin and a transparent topcoat on the base coat, wherein the transparent topcoat comprises a thermoplastic or thermosetting resin containing iron oxide encapsulated mica particles in a particle to resin weight ratio of about 0.0001 to about 0.32, the mica particles being about 5 microns to about 60 microns nominal longitudinal dimension and having a thickness of about 0.25 micron to about 1 micron, the iron oxide encapsulation representing about 10% to about 85% by weight of the total weight of the particle.
Claim 2
Dependent Claim
104 words
A substrate material coated with at least two layers of polymer including a base coat comprising a pigmented thermosetting or thermoplastic resin and a transparent topcoat on the base coat, wherein the transparent topcoat comprises a thermoplastic or thermosetting resin containing iron oxide encapsulated mica particles in a particle to resin weight ratio of about 0.0001 to about 0.32, the mica particles being about 5 microns to about 60 microns nominal longitudinal dimension and having a thickness of about 0.25 micron to about 1 micron, the iron oxide encapsulation representing about 10% to about 85% by weight of the total weight of the particle.
Claim 3
Dependent Claim
40 words
The article of claim 1 wherein the substrate is metal, and the oxide encapsulation additionally contains about 1% to about 35% by weight titanium dioxide and about 0.1% to about 3.5% chromium hydroxide based on total weight of the particle.
Claim 4
Independent Claim
126 words
A method of coating a substrate with multiple layers of polymer comprising applying at least one layer of a base coat of pigmental thermosetting or thermoplastic resin to the substrate, applying at least one layer of a transparent thermosetting or thermoplastic topcoat on the base coat, and drying or curing the applied coatings, the transparent topcoat comprising a thermoplastic or thermosetting resin containing iron oxide encapsulated mica particles in a particle to resin weight ratio of about 0.0001 to about 0.32, the mica particles being about 5 microns to about 60 microns nominal longitudinal dimension and having a thickness of about 0.25 micron to about 1 micron, the iron oxide encapsulation representing about 10% to about 85% by weight of the total weight of the particle.
Claim 5
Independent Claim
126 words
A method of coating a substrate with multiple layers of polymer comprising applying at least one layer of a base coat of pigmental thermosetting or thermoplastic resin to the substrate, applying at least one layer of a transparent thermosetting or thermoplastic topcoat on the base coat, and drying or curing the applied coatings, the transparent topcoat comprising a thermoplastic or thermosetting resin containing iron oxide encapsulated mica particles in a particle to resin weight ratio of about 0.0001 to about 0.32, the mica particles being about 5 microns to about 60 microns nominal longitudinal dimension and having a thickness of about 0.25 micron to about 1 micron, the iron oxide encapsulation representing about 10% to about 85% by weight of the total weight of the particle.
Claim 6
Dependent Claim
42 words
The method of claim 3 wherein the substrate is metal and the iron oxide encapsulation additionally contains about 1% to about 35% by weight titanium dioxide and about 0.3% to about 0.9% chromium hydroxide based on the total weight of the particle.
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) | 1988-02-12 | 1988-08-13 | 1989-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-12 | 1992-08-13 | 1993-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-12 | 1996-08-13 | 1997-02-12 | $7700.00 | Window Closed / Lapsed |