Patent US4216023A successfully refreshed from Google Patents.
US4216023A
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Zinc sulfide based pigments containing selenium
Assignee: Vibrantz Corp
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Filing: 1979-02-12
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Granted: 1980-08-05
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Expires: 1999-02-12
Abstract
Abstract Pigments are disclosed comprising zinc sulfide as a host containing in solid solution at least a sufficient amount of copper indium sulfide as a dopant to alter the color of the zinc sulfide, characterized in that selenium is substituted for at least some of the sulfur. Optionally, barium sulfate may be used as an extender. The pigment may be prepared by jointly precipitating the sulfides of the indicated metals and then firing to an equilibrium temperature to achieve a desired solid solution.
Inventors
- 👤 George P. Kinstle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:58
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/04; C09C1/06; C01; C01P; C01P2002/00; C01P2002/50; C01P2002/52; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
73 words
In a pigment comprising a zinc sulfide host containing in solid solution a sufficient amount of copper indium sulfide to alter the color of the zinc sulfide; the improvement comprising substituting selenium in said copper indium sulfide for at least some of the sulfur up to all of said sulfur, said substitution of selenium causing a shift in the color response curve of said pigment determined by plotting wave length against percent reflectance.
Claim 2
Dependent Claim
73 words
In a pigment comprising a zinc sulfide host containing in solid solution a sufficient amount of copper indium sulfide to alter the color of the zinc sulfide; the improvement comprising substituting selenium in said copper indium sulfide for at least some of the sulfur up to all of said sulfur, said substitution of selenium causing a shift in the color response curve of said pigment determined by plotting wave length against percent reflectance.
Claim 3
Dependent Claim
79 words
A pigment comprising a zinc sulfide host containing in solid solution at least a sufficient amount of a dopant to alter the color of the zinc sulfide, said dopant corresponding to the formula: CuInS.sub.2-x Se.sub.x in which x is greater than zero but less than or equal to two, the presence of said selenium causing a shift in the color response curve of said pigment to a higher wave length and imparting a more intense color to said pigment.
Claim 4
Dependent Claim
79 words
A pigment comprising a zinc sulfide host containing in solid solution at least a sufficient amount of a dopant to alter the color of the zinc sulfide, said dopant corresponding to the formula: CuInS.sub.2-x Se.sub.x in which x is greater than zero but less than or equal to two, the presence of said selenium causing a shift in the color response curve of said pigment to a higher wave length and imparting a more intense color to said pigment.
Claim 5
Dependent Claim
17 words
The pigment of claim 2 in which x has a value of about 0.1 to about 1.0.
Claim 6
Dependent Claim
29 words
The pigment of claim 2 in which said dopant is present in an amount ranging from about 1 mole percent to about 10 mole percent of the zinc sulfide.
Claim 7
Dependent Claim
35 words
The pigment of claim 2 in which said dopant is present in an amount ranging from about 0.5 mole percent of the zinc sulfide to the solubility limit of the dopant in said zinc sulfide.
Claim 8
Dependent Claim
17 words
The pigment of claim 2 in which sulfur and selenium are present in substantially equal atomic proportions.
Claim 9
Dependent Claim
38 words
The pigment of claim 2 in which said host is present in an amount of about 40 to about 95 mole percent, and said dopant is present in an amount of about 5 to about 60 mole percent.
Claim 10
Dependent Claim
67 words
A pigment comprising a zinc sulfide host containing in solid solution at least a sufficient amount of a dopant to alter the color of the zinc sulfide, said dopant comprising copper indium selenide, the presence of selenium in said pigment causing a shift in the color response curve of said pigment to a higher wave length and imparting a cleaner, purer, more intense color to said pigment.
Claim 11
Dependent Claim
67 words
A pigment comprising a zinc sulfide host containing in solid solution at least a sufficient amount of a dopant to alter the color of the zinc sulfide, said dopant comprising copper indium selenide, the presence of selenium in said pigment causing a shift in the color response curve of said pigment to a higher wave length and imparting a cleaner, purer, more intense color to said pigment.
Claim 12
Dependent Claim
35 words
The pigment of claim 2 comprising in mole percent from about 50% to about 98% zinc sulfide, from about 1% to about 25% copper indium sulfide, and from about 1% to about 25% selenium sulfide.
Claim 13
Dependent Claim
13 words
The pigment of claim 2 in which said solid solution is single phased.
Claim 14
Dependent Claim
12 words
The pigment of claim 2 containing an extending amount of barium sulfate.
Claim 15
Dependent Claim
22 words
The pigment of claim 2 containing barium sulfate in a molar amount up to substantially the molar amount of zinc sulfide present.
Claim 16
Dependent Claim
11 words
The pigment of claim 2 containing an extending amount of lithopone.
Claim 17
Dependent Claim
13 words
The pigment of claim 2 in which said solid solution is multiple phased.
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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) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |