US5763086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Goniochromatic luster pigments with silicon-containing coating
Assignee: BASF SE
•
Filing: 1996-10-09
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Granted: 1998-06-09
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Expires: 2016-10-09
Abstract
Abstract Goniochromatic luster pigments based on multiply coated platelet-shaped metallic substrates comprising at least one layer packet of A) a layer consisting essentially of silicon oxide, silicon oxide hydrate, aluminum oxide and/or aluminum oxide hydrate, and B) a nonselectively absorbing, silicon-containing layer which is at least partially transparent to visible light, and also, if desired, additionally C) an outer layer which consists essentially of colorless or selectively absorbing metal oxide, are useful for coloring paints, inks, including printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.
Inventors
- 👤 Raimund Schmid
- 👤 Norbert Mronga
- 👤 Jorg Adel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:20
CPC Classifications
C; C03; C03C; C03C1/00; C03C1/10; A; A61; A61K; A61K8/00; A61K8/02; A61K8/0241; A61Q; A61Q1/00; A61Q1/02; C08; C08K; C08K9/00; C08K9/02; C09; C09C; C09C1/00; C09C1/0015; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; C09D5/00; C09D5/36; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; A61K2800/42; A61K2800/43; A61K2800/436; A61K2800/60; A61K2800/61; A61K2800/62; A61K2800/621; C01; C01P; C01P2006/00; C01P2006/12; C09C2200/00; C09C2200/10; C09C2200/1054; C09C2200/24; C09C2200/30; C09C2200/301; C09C2200/302; C09C2200/303; C09C2220/00; C09C2220/10; C09C2220/103; C09C2220/20; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
Goniochromatic luster pigments based on multiple coated platelet-shaped metallic substrates having a multiple coating comprising at least one layer packet of A) a layer consisting essentially of silicon oxide, silicon oxide hydrate, aluminum oxide and/or aluminum oxide hydrate, and B) a nonselectively absorbing, silicon-containing layer which is at least partially transparent to visible light, and optionally C) an outer layer which consists essentially of colorless or selectively absorbing metal oxide.
Claim 2
Dependent Claim
70 words
Goniochromatic luster pigments based on multiple coated platelet-shaped metallic substrates having a multiple coating comprising at least one layer packet of A) a layer consisting essentially of silicon oxide, silicon oxide hydrate, aluminum oxide and/or aluminum oxide hydrate, and B) a nonselectively absorbing, silicon-containing layer which is at least partially transparent to visible light, and optionally C) an outer layer which consists essentially of colorless or selectively absorbing metal oxide.
Claim 3
Dependent Claim
26 words
Luster pigments as claimed in claim 1 wherein layer (B) consists essentially of silicon or of mixtures of silicon, other metals and/or silicides of these metals.
Claim 4
Dependent Claim
29 words
Luster pigments as claimed in claim 1 wherein layer (B) consists essentially of silicon, of mixtures of silicon with molybdenum, chromium, tungsten and/or iron and/or silicides of these metals.
Claim 5
Dependent Claim
20 words
Luster pigments as claimed in claim 1 wherein layer (C) comprises titanium dioxide, zirconium dioxide, iron(III) oxide and/or chromium(III) oxide.
Claim 6
Dependent Claim
13 words
Luster pigments as claimed in claim 1 comprising only one layer packet (A)+(B).
Claim 7
Dependent Claim
23 words
Luster pigments as claimed in claim 1 wherein the metallic substrate consists essentially of aluminum platelets produced by common atomizing and grinding techniques.
Claim 8
Dependent Claim
26 words
Luster pigments as claimed in claim 1 wherein the metallic substrate consists essentially of aluminum platelets which may be coated with a ferromagnetic layer and/or passivated.
Claim 9
Dependent Claim
65 words
Luster pigment mixtures of I) the luster pigments of claim 1, and II) multiply coated silicate-based platelets comprising A') a layer consisting essentially of colorless or selectively absorbing metal oxide, B') a nonselectively absorbing, silicon-containing, metallic layer which is at least partially transparent to visible light, and optionally C') an outer layer which consists essentially of colorless or selectively absorbing metal oxide, as essential components.
Claim 10
Dependent Claim
158 words
A process for producing luster pigments as claimed in claim 1, which comprises coating the platelet-shaped metallic substrates with layer (A) by gas phase decomposition of volatile organosilicons using water vapor and/or oxygen or by hydrolytic decomposition of organic silicon or aluminum compounds in which organic radicals are attached to the silicon or aluminum via oxygen atoms in the presence of an organic solvent in which the silicon or aluminum compounds are soluble and which is miscible with water, and subsequent drying, layers (B) by gas phase decomposition of silanes of the formula I Si.sub.n X.sub.2n+2 (I) where n is from 1 to 3, and each X is independently hydrogen or C 1 -C 3 -alkyl when n=1, at least one X being hydrogen, or is hydrogen when n>1, with or without metal carbonyls in an inert atmosphere and optionally layer (C) by gas phase decomposition of volatile metal compounds in the presence of oxygen and/or water vapor.
Claim 11
Dependent Claim
24 words
A process for coloring paints, inks, plastics, glasses, ceramic products and decorative cosmetic preparations which comprises using luster pigments as claimed in claim 1.
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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) | 2001-06-08 | 2001-12-08 | 2002-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-08 | 2005-12-08 | 2006-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-08 | 2009-12-08 | 2010-06-09 | $7700.00 | Window Closed / Lapsed |