US5153068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated particle
Assignee: Sekisui Chemical Co Ltd
•
Filing: 1990-06-28
•
Granted: 1992-10-06
•
Expires: 2010-06-28
Abstract
Abstract A coated color particle with extremely low susceptibility to decoloring is provided. The coated color particle comprises a colored core particle and a coating layer formed on the surface of the core particle, wherein the coating layer is formed by treatment of the core particle with an agent selected from the group consisting of silane compounds, silyl isocyanates, and organic titanium compounds.
Inventors
- 👤 Minoru Kohara
- 👤 Kunikazu Yamada
- 👤 Kazuo Saiuchi
- 👤 Yukio Ohtsuka
- 👤 Kazuhiko Kanki
- 👤 Yutaka Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:00
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/28; C03C17/30; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1339; G02F1/13392; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993; Y10T428/2995; Y10T428/2996; Y10T428/2998
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
58 words
A coated colored particle comprising: (a) a colored core particle made of a resin or glass; and (b) a coating layer formed on the surface of said core particle, wherein said coating layer is formed by treatment of said core particle with an agent selected from the group consisting of silane compounds, silyl isocyanates, and organic titanium compounds.
Claim 2
Dependent Claim
58 words
A coated colored particle comprising: (a) a colored core particle made of a resin or glass; and (b) a coating layer formed on the surface of said core particle, wherein said coating layer is formed by treatment of said core particle with an agent selected from the group consisting of silane compounds, silyl isocyanates, and organic titanium compounds.
Claim 3
Dependent Claim
61 words
A coated colored particle according to claim 1, further comprising (c) an intermediate layer disposed between the surface of said core particle and said coating layer, wherein said intermediate layer is formed by treatment of said core particle with a silane compound, and said coating layer is formed by treatment of the surface of said intermediate layer with a silyl isocyanate.
Claim 4
Dependent Claim
62 words
A coated colored particle according to claim 1, further comprising: (c) an intermediate layer disposed between the surface of said core particle and said coating layer, wherein said intermediate layer is formed by treatment of said core particle with a silane compound, and said coating layer is formed by treatment of the surface of said intermediate layer with an organic titanium compound.
Claim 5
Dependent Claim
16 words
A particulate spacer for liquid crystal display cells comprising a coated colored particle of claim 1.
Claim 6
Dependent Claim
16 words
A particulate spacer for liquid crystal display cells comprising a coated colored particle of claim 2.
Claim 7
Dependent Claim
16 words
A particulate spacer for liquid crystal display cells comprising a coated colored particle of claim 3.
Claim 8
Dependent Claim
77 words
A colored particle comprising a colored core particle, which consists essentially of at least one coloring member of the group consisting of dyes and pigments, and at least one member selected from the group consisting of resin and glass; and a coating on said colored core particle comprising the product of contacting said colored core particle with at least one member selected from the group consisting of a silane, a silyl isocyanate, and an organic titanium compounds.
Claim 9
Dependent Claim
77 words
A colored particle comprising a colored core particle, which consists essentially of at least one coloring member of the group consisting of dyes and pigments, and at least one member selected from the group consisting of resin and glass; and a coating on said colored core particle comprising the product of contacting said colored core particle with at least one member selected from the group consisting of a silane, a silyl isocyanate, and an organic titanium compounds.
Claim 10
Dependent Claim
62 words
A coated colored particle as claimed in claim 7 wherein said coating comprises a first layer adjacent said core particle consisting essentially of a product resulting from the contact of said core particle surface with a silane; and a second layer on said first layer comprising at least one member selected from the group consisting of a silyl isocyanate and an organo-titanium.
Claim 11
Dependent Claim
74 words
A coated colored particle as claimed in claim 7 wherein said core particle is one member selected from the group consisting of: polyethylene, polypropylene, poly(methyl)pentene, polyvinyl chloride, polytetrafluoroethylene, polystyrene, polymethyl methacrylate, polyethylene terephthalate, polybutylene terephthtalate, polyamide, polyimides, polysulfones, polyphenylene oxide, polyacetal, epoxy resins, phenolic resins, melamine resins, unsaturated polyester resins, polydivinyl benzene, divinyl benzene-styrene copolymer, divinyl benzene-acrylate copolymers, polydiallyl phthalate, polytriallyl isocyanurate, polybenzoguanamine, silicate glass, borosilicate glass, lead glass, soda-lime glass, alumina, and aluminosilicate.
Claim 12
Dependent Claim
81 words
A coated colored particle as claimed in claim 7 wherein said core particle is spherical, having an average diameter of about 0.1 μm to 1,000 μm; ellipsoidal, having an average short axis diameter of about 0.1 μm to 1,000 μm and a ratio of long axis diameter to short axis diameter of about 1 to 10; or cylindrical having an average diameter of about 0.5 μm to 1,000 μm and a ratio of length to diameter of about 1 to 50.
Claim 13
Dependent Claim
36 words
A coated colored particle as claimed in claim 7 wherein said silane is at least one member selected from the group consisting of amino silanes, amido silanes, vinyl silanes, methacrylyl silanes, glycidyl silanes, and mercapto silanes.
Claim 14
Dependent Claim
90 words
A coated colored particle as claimed in claim 7 wherein said silyl isocyanate is at least one member selected from the group consisting of hydrogen silyltriisocyanate, fluoro silyl triisocyanate, methyl silyl triisocyanate, ethyl silyl triisocyanate, isopropyl silyl triisocyanate, n-propyl silyl triisocyanate, n-butyl silyl triisocyanate, methoxy silyl triisocyanate, ethoxy silyl triisocyanate, phenoxy silyl triisocyanate, cyclohexyl silyl triisocyanate, vinyl silyl triisocyanate, difluoro silyl diisocyanate, dimethyl silyl diisocyanate, di-n-butyl silyl diisocyanate, diphenyl silyl diisocyanate, dimethoxy silyl diisocyanate, diethoxy silyl diisocyanate, trimethyl silyl isocyanate, triethyl silyl isyocyanate, triphenyl silyl isocyanate, and trifluoro silyl isocyanate.
Claim 15
Dependent Claim
53 words
A coated colored particle as claimed in claim 7 wherein said organo-titanium compound is at least one member selected from the group consisting of titanium tetraethoxide, titanium tetrapropoxide, titanium tetrabutoxide, titanium tetrapentoxide, titanium tetrahexoxide, tetrakis(2-ethyl hexoxide)titanium, titanium tetradodecyloxide, titanium tetrastearyloxide, titanium dipropoxide bis(acetylacetonate), titanium dibutoxide bis(triethanolamine), titanium dihydroxide bis(lactate), and titanium propoxyoctylene glycolate.
Claim 16
Dependent Claim
32 words
A coated colored particle as claimed in claim 8 wherein said external surface of said coating on said particle is the titanium oxide polymer reaction product of said organotitanium compound and water.
Claim 17
Dependent Claim
27 words
A coated colored particle as claimed in claim 8 wherein said external surface of said coating on said particle is a silyl isocyanate film of reticulate structure.
Claim 18
Dependent Claim
24 words
A coated colored particle as claimed in claim 8 wherein said coating on said particle is layered and wherein said layers are applied successively.
Claim 19
Dependent Claim
32 words
A coated colored particle as claimed in claim 14 wherein said titanium oxide polymer external surface on said particle is 0.01 to 500 mg per square meter of core particle surface area.
Claim 20
Dependent Claim
24 words
A liquid crystal display cell comprising a liquid crystal and a spacer consisting essentially of the coated colored particle as claimed in claim 7.
Claim 21
Dependent Claim
24 words
A liquid crystal display cell comprising a liquid crystal and a spacer consisting essentially of the coated colored particle as claimed in claim 8.
Claim 22
Dependent Claim
25 words
A coated colored particle as claimed in claim 7 wherein said external surface comprises the product of contacting said colored core particle with a silane.
References Cited (Backward Citations)
GB1476121A
Cited
JPS57189117A
Cited
JPS5924829A
Cited
US4672040A
Cited
US4695393A
Cited
JPS62195623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-06 | 1996-04-06 | 1996-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-06 | 2000-04-06 | 2000-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-06 | 2004-04-06 | 2004-10-06 | $7700.00 | Window Closed / Lapsed |