US5026429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal oxide coated platelet-like organic pigments
Assignee: BASF SE
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Filing: 1990-01-25
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Granted: 1991-06-25
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Expires: 2010-01-25
Abstract
Abstract A luster pigment is described which is made up of a metal oxide film on a colored platelet-like support. The support is a pigment having a length of 3-150 μm, a width of 3-150 μm, and a thickness of 0.1-2 μm. A process is described for the preparation of the pigment in which an organic platelet-like pigment is coated with a metal-oxide film by chemical vapor deposition. The preferred platelet-like organic pigment is β-copper phthalocyanine.
Inventors
- 👤 Norbert Mronga
- 👤 Werner Ostertag
- 👤 Gustav Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:42
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0004; C09B67/0007; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
52 words
A luster pigment compound of a metal oxide film on a colored platelet-like support particle, wherein the support particle is a platelet-like organic color pigment particle having the dimensions of from 3 to 150 μm in length, from 3 to 150 μm in width and from 0.1 to 2 μm in thickness.
Claim 2
Dependent Claim
52 words
A luster pigment compound of a metal oxide film on a colored platelet-like support particle, wherein the support particle is a platelet-like organic color pigment particle having the dimensions of from 3 to 150 μm in length, from 3 to 150 μm in width and from 0.1 to 2 μm in thickness.
Claim 3
Dependent Claim
16 words
A luster pigment as claimed in claim 1, wherein the organic color pigment is β-copper phthalocyanine.
Claim 4
Dependent Claim
18 words
A luster pigment as claimed in claim 1, having a film of alternating layers of different metal oxides.
Claim 5
Dependent Claim
59 words
A process for the production of a luster pigment according to claim 1, where vaporous chlorides of titanium, vanadium or zirconium are introduced into a fluidized bed of an organic platelet-like color pigment particle and reacted with water vapor to form the corresponding oxides of said metals which are deposited as a film on the organic platelet-like pigment particle.
Claim 6
Dependent Claim
41 words
A process according to claim 4, where the amount of the vapors of the chlorides of titanium, vanadium or zirconium does not exceed 5% by volume based on the total amount of other gases or vapors introduced into the fluidized bed.
Claim 7
Dependent Claim
61 words
A process for the production of a luster pigment according to claim 1, wherein vapors of the carbonyl compounds FE(CO) 5 and Cr(CO) 6 are introduced into a fluidized bed of an organic platelet-like color pigment particle and reacted with oxygen to form the corresponding oxides of said metals which are deposited as a film on the organic platelet-like pigment particle.
Claim 8
Dependent Claim
39 words
A process according to claim 6, wherein the amount of the vapors of FE(CO) 5 and Cr(CO) 6 do not exceed 5% by volume based on the total amount of other gases or vapors introduced into the fluidized bed.
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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) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |