Patent US2355121A successfully refreshed from Google Patents.
Patent US4086123A successfully refreshed from Google Patents.
US4086123A
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Zinc sulfide based pigments
Assignee: Vibrantz Corp
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Filing: 1977-02-25
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Granted: 1978-04-25
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Expires: 1997-02-25
Abstract
Abstract Pigments are disclosed comprising zinc sulfide as a host containing in solid solution at least a sufficient amount of a metal sulfide additive or dopant to alter the color of the zinc sulfide. The dopant may comprise one or more certain metal sulfides but normally is present as a unitary sulfide, such as lithium sulfide, or preferably as a multiple sulfide, such as lithium indium sulfide and copper indium sulfide. Optionally, a binary metal compound dopant can include a metal oxide. The pigments may be prepared by encapsulating the host and dopant metal sulfides in vacuum to prevent introduction of oxides and then heating to an equilibrium temperature.
Inventors
- 👤 Floyd A. Hummel
- 👤 Charussri Sombuthawee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:56
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/0009; C09C1/04; C01; C01P; C01P2002/00; C01P2002/50; C01P2002/52; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
87 words
A pigment comprising a zinc sulfide host containing in solid solution at least a sufficient amount of a metal sulfide-containing dopant to alter the color of the zinc sulfide, said dopant being selected from the group consisting of lithium sulfide, calcium sulfide, gallium sulfide, lithium indium sulfide, lithium indium sulfide and copper indium sulfide, lithium indium sulfide and silver indium sulfide, lithium sulfide and chromium sulfide, indium sulfide and copper oxide, indium sulfide and lithium oxide, lithium sulfide and manganese sulfide and copper sulfide, and mixtures thereof.
Claim 2
Dependent Claim
87 words
A pigment comprising a zinc sulfide host containing in solid solution at least a sufficient amount of a metal sulfide-containing dopant to alter the color of the zinc sulfide, said dopant being selected from the group consisting of lithium sulfide, calcium sulfide, gallium sulfide, lithium indium sulfide, lithium indium sulfide and copper indium sulfide, lithium indium sulfide and silver indium sulfide, lithium sulfide and chromium sulfide, indium sulfide and copper oxide, indium sulfide and lithium oxide, lithium sulfide and manganese sulfide and copper sulfide, and mixtures thereof.
Claim 3
Dependent Claim
37 words
A pigment of claim 1 in which said metal sulfide-containing 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 4
Dependent Claim
110 words
A pigment comprising a zinc sulfide host containing in solid solution at least a sufficient amount of a metal sulfide-containing dopant to alter the color of the zinc sulfide, said dopant comprising a unitary metal sulfide dopant selected from the group consisting of lithium sulfide, calcium sulfide, gallium sulfide, and lithium indium sulfide, a binary metal compound dopant selected from the group consisting of lithium indium sulfide and copper indium sulfide, lithium indium sulfide and silver indium sulfide, lithium sulfide and chromium sulfide, indium sulfide and copper oxide, and indium sulfide and lithium oxide, or a ternary metal sulfide dopant consisting essentially of lithium sulfide, manganese sulfide, and copper sulfide.
Claim 5
Dependent Claim
110 words
A pigment comprising a zinc sulfide host containing in solid solution at least a sufficient amount of a metal sulfide-containing dopant to alter the color of the zinc sulfide, said dopant comprising a unitary metal sulfide dopant selected from the group consisting of lithium sulfide, calcium sulfide, gallium sulfide, and lithium indium sulfide, a binary metal compound dopant selected from the group consisting of lithium indium sulfide and copper indium sulfide, lithium indium sulfide and silver indium sulfide, lithium sulfide and chromium sulfide, indium sulfide and copper oxide, and indium sulfide and lithium oxide, or a ternary metal sulfide dopant consisting essentially of lithium sulfide, manganese sulfide, and copper sulfide.
Claim 6
Dependent Claim
31 words
A pigment of claim 3 in which said metal sulfide-containing dopant is present in an amount ranging from about 1 mol percent to about 10 mol percent of the zinc sulfide.
Claim 7
Dependent Claim
37 words
A pigment of claim 3 in which each component of each binary dopant comprising two metal sulfides is present in an amount ranging from about 35 mol percent to about 65 mol percent of said binary dopant.
Claim 8
Dependent Claim
24 words
A pigment of claim 3 in which the components of a binary dopant comprising two metal sulfides are present in substantially equal molar proportions.
Claim 9
Dependent Claim
22 words
A pigment of claim 3 in which said copper oxide is selected from the group consisting of cuprous oxide and cupric oxide.
Claim 10
Dependent Claim
18 words
A pigment of claim 3 in which said binary metal compound dopant is a lithium-containing binary metal compound.
Claim 11
Dependent Claim
31 words
A pigment of claim 3 comprising in mol percent from about 40 percent to about 95 percent zinc sulfide and from about 5 percent to about 60 percent lithium indium sulfide.
Claim 12
Dependent Claim
42 words
A pigment of claim 3 comprising in mol percent from about 76 percent to about 95 percent zinc sulfide, from about 2 percent to about 15 percent lithium indium sulfide, and from about 2 percent to about 15 percent copper indium sulfide.
Claim 13
Dependent Claim
50 words
A pigment of claim 3 comprising in mol percent from about 70 percent to about 98.5 percent zinc sulfide, from about 0.5 percent to about 10 percent lithium sulfide, from about 5 percent to about 10 percent manganese sulfide, and from about 0.5 percent to about 10 percent copper sulfide.
Claim 14
Dependent Claim
13 words
A pigment of claim 1 in which said dopant includes a lithium-containing compound.
Claim 15
Dependent Claim
28 words
A pigment of claim 3 in which a binary metal sulfide dopant contains a metal oxide in an amount insufficient to degrade the desired color of the pigment.
Claim 16
Dependent Claim
43 words
A pigment of claim 3 in which a binary metal sulfide dopant contains a metal oxide in an amount insufficient to degrade the desired color of the pigment, said metal oxide being selected from the group consisting of copper oxide and lithium oxide.
Claim 17
Dependent Claim
29 words
A pigment of claim 13 in which said metal oxide is present in an amount ranging from about 1 mole percent to about 15 mole percent of the pigment.
Claim 18
Dependent Claim
40 words
A pigment of claim 1 comprising in mole percent from about 80 percent to about 95 percent zinc sulfide, from about 2.5 percent to about 10 percent indium sulfide, and from about 2.5 percent to about 10 percent copper oxide.
Claim 19
Dependent Claim
42 words
A pigment of claim 1 comprising in mole percent from about 80 percent to about 98 percent zinc sulfide, from about one percent to about 10 percent lithium indium sulfide, and from about one percent to about 10 percent silver indium sulfide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |