US4551491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pearlescent automotive paint compositions
Assignee: BASF Corp
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Filing: 1984-12-07
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Granted: 1985-11-05
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Expires: 2004-12-07
Abstract
Abstract A coating composition is described comprising a thermoplastic or thermosetting resin material containing a pigment composition. The pigment composition contains about 5 to about 90% iron oxide encapsulated mica particles. When used in a multi-coat coating process as a basecoat overcoated with a transparent overcoat, an article is produced which not only produces improved pearlescent 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
2026-10-24 20:34
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/52; B05D7/53; B05D7/532; B05D5/00; B05D5/06; B05D5/065; B05D5/066; C; C09; C09D; C09D5/00; C09D5/36; Y; Y10; Y10S; Y10S106/00; Y10S106/03; Y10T; Y10T428/00; Y10T428/25; Y10T428/251; Y10T428/26; Y10T428/263; Y10T428/31504; Y10T428/31652; Y10T428/31678; Y10T428/31692; Y10T428/31971; Y10T428/31989
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
A substrate material coated with at least two layers of polymer including a basecoat comprising a pigmented thermosetting or thermoplastic resin and a transparent topcoat on the basecoat, wherein the pigment in the basecoat consists essentially of iron oxide encapsulated mica particles, 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 mica representing about 40% to about 80% by weight of the total weight of the particle, and the oxide encapsulation contains about 0.1% to about 3.5% chromium hydroxide based on total weight of the particle.
Claim 2
Dependent Claim
104 words
A substrate material coated with at least two layers of polymer including a basecoat comprising a pigmented thermosetting or thermoplastic resin and a transparent topcoat on the basecoat, wherein the pigment in the basecoat consists essentially of iron oxide encapsulated mica particles, 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 mica representing about 40% to about 80% by weight of the total weight of the particle, and the oxide encapsulation contains about 0.1% to about 3.5% chromium hydroxide based on total weight of the particle.
Claim 3
Dependent Claim
25 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.
Claim 4
Independent Claim
122 words
A method of coating a substrate with multiple layers of polymer comprising applying at least one layer of a basecoat of pigmented thermosetting or thermoplastic resin to the substrate, applying at least one layer of a transparent thermosetting or thermoplastic topcoat on the basecoat, and drying or curing the applied coatings, the pigment consisting essentially of iron oxide encapsulated mica particles, 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 mica representing about 40% to about 80% by weight of the total weight of particle, and the oxide encapsulation conatins about 0.1% to about 3.5% chromium hydroxide based on total weight of the particle.
Claim 5
Independent Claim
122 words
A method of coating a substrate with multiple layers of polymer comprising applying at least one layer of a basecoat of pigmented thermosetting or thermoplastic resin to the substrate, applying at least one layer of a transparent thermosetting or thermoplastic topcoat on the basecoat, and drying or curing the applied coatings, the pigment consisting essentially of iron oxide encapsulated mica particles, 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 mica representing about 40% to about 80% by weight of the total weight of particle, and the oxide encapsulation conatins about 0.1% to about 3.5% chromium hydroxide based on 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) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |