Patent US2696673A successfully refreshed from Google Patents.
Patent US5137575A successfully refreshed from Google Patents.
US5137575A
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Chromatic pigments comprising a coloring metal oxide coating on transparent titanium oxide core particles of 0.01 to 0.1 micron size
Assignee: Tayca Corp
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Filing: 1990-05-30
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Granted: 1992-08-11
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Expires: 2010-05-30
Abstract
Abstract TiO 2 -based chromatic pigments are provided by coating core particles of TiO 2 having a mean particle size from 0.01 to 0.1 μm with a layer of metal oxide of Ni, Co, Ce, Cu, Cr, Mn, V, W or a mixutre thereof.
Inventors
- 👤 Takashi Yasuki
- 👤 Shunji Idei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:20
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/0081; A; A61; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/18; A61K8/19; A61K8/25; A61K8/26; A61K8/29; A61Q; A61Q1/00; A61Q1/02; B; B82; B82Y; B82Y30/00; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C09C1/0015; C09C1/0021; C09C1/36; C09C1/3607; C09C1/3653; C09C1/3661; C09C1/62; C09D; C09D5/00; C09D5/36; C09D7/00; C09D7/40; C09D7/60; C09D7/61; C09D7/62; C09D7/66; C09D7/67; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; A61K2800/42; A61K2800/43; A61K2800/60; A61K2800/61; A61K2800/62; A61K2800/621; C01; C01P; C01P2002/00; C01P2002/70; C01P2002/72; C01P2002/80; C01P2002/84; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/64; C01P2004/80; C01P2004/82; C01P2006/00; C01P2006/12; C01P2006/60; C01P2006/63; C01P2006/64; C08K9/00; C08K9/02; C09C2200/00; C09C2200/10; C09C2200/1054; C09C2200/40; C09C2200/401; C09C2210/00; C09C2210/20
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
53 words
A chromatic pigment comprising transparent core particles of titanium dioxide having a mean particle size from 0.01 to 0.1 μm coated thereon with a layer of an oxide of Ni, Co, Cu, Cr, Mn, V, W or a mixture of these oxides wherein the pigment substantially retains the transparency of the core particle.
Claim 2
Dependent Claim
53 words
A chromatic pigment comprising transparent core particles of titanium dioxide having a mean particle size from 0.01 to 0.1 μm coated thereon with a layer of an oxide of Ni, Co, Cu, Cr, Mn, V, W or a mixture of these oxides wherein the pigment substantially retains the transparency of the core particle.
Claim 3
Dependent Claim
40 words
The pigment of claim 1, wherein said coating layer amounts 1 to 30% as NiO, CoO or CuO Cr 2 O 3 , MnO 2 , V 2 O 5 or WO 2 by weight of the titanium dioxide particles.
Claim 4
Dependent Claim
11 words
The pigment of claim 2, wherein said oxide is nickel oxide.
Claim 5
Dependent Claim
11 words
The pigment of claim 2, wherein said oxide is cobalt oxide.
Claim 6
Dependent Claim
11 words
The pigment of claim 2, wherein said oxide is copper oxide.
Claim 7
Dependent Claim
11 words
The pigment of claim 2, wherein said oxide is chromium oxide.
Claim 8
Dependent Claim
11 words
The pigment of claim 2, wherein said oxide is manganese oxide.
Claim 9
Dependent Claim
11 words
The pigment of claim 2, wherein said oxide is vanadium oxide.
Claim 10
Dependent Claim
11 words
The pigment of claim 2, wherein said oxide is tungsten oxide.
Claim 11
Dependent Claim
14 words
The pigment of claim 1, wherein said titanium dioxide particles are of rutile type.
Claim 12
Independent Claim
83 words
A method for producing a chromatic pigment comprising the steps of suspending transparent titanium dioxide microparticles having a mean particle size of 0.01 to 0.1 μm in an aqueous medium, adding a water-soluble metal compound of Ni, Co, Cu, Cr, Mn, V, W or a mixture of said compounds, hydrolyzing said metal compound and depositing the resulting metal hydroxide on said titanium dioxide particles, recovering and washing the particles, and calcining the resulting product at a temperature of 300° C. to 800° C.
Claim 13
Independent Claim
83 words
A method for producing a chromatic pigment comprising the steps of suspending transparent titanium dioxide microparticles having a mean particle size of 0.01 to 0.1 μm in an aqueous medium, adding a water-soluble metal compound of Ni, Co, Cu, Cr, Mn, V, W or a mixture of said compounds, hydrolyzing said metal compound and depositing the resulting metal hydroxide on said titanium dioxide particles, recovering and washing the particles, and calcining the resulting product at a temperature of 300° C. to 800° C.
Claim 14
Dependent Claim
47 words
The method of claim 11, wherein the amount of said water soluble metal compound range from 1 to 30% calculated as NiO, CoO, CuO, Cr 2 O 3 , MnO 2 , V 2 O 5 , or WO 2 by weight of said titanium dioxide particles.
Claim 15
Dependent Claim
27 words
The method of claim 11 wherein said water-soluble metal compound is the chloride, sulfate or nitrate of Ni, Co, Cu, Cr, Mn or V, or ammonium tungstate.
Claim 16
Dependent Claim
25 words
The method of claim 11, wherein said hydrolyzing step includes adjusting the pH of said suspension at 8 to 9 with an alkali or acid.
Claim 17
Dependent Claim
85 words
A coating composition comprising: (a) 20 to 40% by weight of a film-forming synthetic resin; (b) 1 to 10% by weight of a metallic or metallic-like pigment; (c) 1 to 15% by weight of the colored TiO 2 microparticle pigment of claim 1; and (d) the balance being an organic volatile solvent for said film-forming synthetic resin, said composition being for use in finishing a substrate with a multi-layer metallic coating comprising a base coat of said composition and a clear top coating applied thereon.
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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) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |