Patent US3880666A successfully refreshed from Google Patents.
US3880666A
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Pigment composition
Assignee: Hull-Smith Chemicals Inc
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Filing: 1973-08-29
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Granted: 1975-04-29
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Expires: 1993-08-29
Abstract
Abstract This invention provides an improved pigment composition which blends readily with hydrophylic and oleophylic vehicles, and which can be manufactured with highly reproduceable color value. A colorant, typically a dye or dye intermediate, is absorbed on an insoluble dithiocarbamate salt of a polyvalent metal. The dyecontaining salts produced in this manner provide a pigment which is non-bleeding in hydrophylic or oleophylic vehicles. Aluminum and zirconium salts are the preferred salts, aluminum dithiocarbamate salts providing transparent pigments, and zirconium dithiocarbamate salts providing opaque pigments. Pigment materials of this invention can be produced by absorbing dye or dye intermediate on a dithiocarbamate metal salt in an aqueous suspension thereof. Azo dye intermediates can be diazotized and coupled in an aqueous suspension of dithiocarbamate metal salt, in accordance with this invention. Pigment materials of this invention can also be produced by mixing, bonding, reacting, or otherwise combining dithiocarbamate metal salts with insoluble finely divided solids such as carbon black, Indantharene pigments, phthalocyanine pigments, and the like as well as organic or inorganic polymeric materials, typically, metal oxide hydrates, clays, and the like.
Inventors
- 👤 Robert K Remer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:56
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/006; C09B41/00; C09B41/001
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
24 words
A COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF A FINELY DIVIDED WATER INSOLUBLE POLYVALENT METAL SALT OF DITHOCARBAMATE AND A COLORANT UNIFORMLY DISPOSED THEREIN.
Claim 2
Dependent Claim
24 words
A COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF A FINELY DIVIDED WATER INSOLUBLE POLYVALENT METAL SALT OF DITHOCARBAMATE AND A COLORANT UNIFORMLY DISPOSED THEREIN.
Claim 3
Dependent Claim
27 words
The composition of claim 1 wherein the polyvalent metal constituent of the dithiocarbamate salt is selected from the group consisting of aluminum, zirconium, zinc, lead, and titanium.
Claim 4
Dependent Claim
20 words
A composition comprising a mixture of a finely divided dithiocarbamate salt, a colorant disposed therein, and a water-dispersible polymeric material.
Claim 5
Dependent Claim
20 words
A composition comprising a mixture of a finely divided dithiocarbamate salt, a colorant disposed therein, and a water-dispersible polymeric material.
Claim 6
Dependent Claim
21 words
The composition of claim 3 wherein the polymeric material is selected from the group consisting of metal oxide hydrates and clays.
Claim 7
Independent Claim
82 words
A method of manufacturing a composition comprising admixing a first material selected from the group consisting of colorants, UV absorbers, and optical brighteners with a second material selected from the group consisting of soluble dithiocarbamate salts and insoluble polyvalent metal dithiocarbamate salts, said admixing taking place in an aqueous medium, said method also including the step of precipitating said soluble dithiocarbamate salt by addition of polyvalent metal ions to said aqueous medium whenever said soluble salt is used as said second material.
Claim 8
Independent Claim
82 words
A method of manufacturing a composition comprising admixing a first material selected from the group consisting of colorants, UV absorbers, and optical brighteners with a second material selected from the group consisting of soluble dithiocarbamate salts and insoluble polyvalent metal dithiocarbamate salts, said admixing taking place in an aqueous medium, said method also including the step of precipitating said soluble dithiocarbamate salt by addition of polyvalent metal ions to said aqueous medium whenever said soluble salt is used as said second material.
Claim 9
Independent Claim
41 words
A method of manufacturing a pigment composition comprising the steps of: forming an aqueous dispersion of a colorant; contacting said aqueous dispersion with an aqueous dispersion of a water insoluble polyvalent metal salt of dithiocarbamate; and, recovering the resulting pigment composition.
Claim 10
Independent Claim
41 words
A method of manufacturing a pigment composition comprising the steps of: forming an aqueous dispersion of a colorant; contacting said aqueous dispersion with an aqueous dispersion of a water insoluble polyvalent metal salt of dithiocarbamate; and, recovering the resulting pigment composition.
Claim 11
Independent Claim
38 words
A method of manufacturing a pigment composition comprising forming a solution of water-soluble dithiocarbamate salts, dispersing a colorant in the resulting solution and adding polyvalent metal ions thereto in an amount sufficient to precipitate the resulting pigment composition.
Claim 12
Independent Claim
38 words
A method of manufacturing a pigment composition comprising forming a solution of water-soluble dithiocarbamate salts, dispersing a colorant in the resulting solution and adding polyvalent metal ions thereto in an amount sufficient to precipitate the resulting pigment composition.
Claim 13
Independent Claim
55 words
The method of manufacturing a pigment composition comprising the steps of: dissolving a water-soluble salt of a dithiocarbamate in an aqueous system; adding polyvalent metal ions to said aqueous system in an amount sufficient to form an aqueous suspension of insoluble dithiocarbamate salt, admixing a colorant with said system, and separating solids from said system.
Claim 14
Independent Claim
55 words
The method of manufacturing a pigment composition comprising the steps of: dissolving a water-soluble salt of a dithiocarbamate in an aqueous system; adding polyvalent metal ions to said aqueous system in an amount sufficient to form an aqueous suspension of insoluble dithiocarbamate salt, admixing a colorant with said system, and separating solids from said system.
Claim 15
Independent Claim
34 words
A method of manufacturing a pigment composition comprising forming an aqueous suspension of a finely divided water-insoluble polyvalent mEtal dithiocarbamate salt, admixing a colorant therewith, and removing the resulting solids from the aqueous suspension.
Claim 16
Independent Claim
34 words
A method of manufacturing a pigment composition comprising forming an aqueous suspension of a finely divided water-insoluble polyvalent mEtal dithiocarbamate salt, admixing a colorant therewith, and removing the resulting solids from the aqueous suspension.
Claim 17
Dependent Claim
25 words
A pigment composition comprising a mixture of a finely divided water insoluble polyvalent metal dithiocarbamate salt having a finely divided water-insoluble solid colorant disposed therein.
Claim 18
Dependent Claim
25 words
A pigment composition comprising a mixture of a finely divided water insoluble polyvalent metal dithiocarbamate salt having a finely divided water-insoluble solid colorant disposed therein.
Claim 19
Dependent Claim
30 words
The pigment composition of claim 10 wherein the finely divided water-insoluble solid colorant is a member selected from the group consisting of the Indantharene pigments, Phthalocyanine pigments, and carbon black.
Claim 20
Dependent Claim
14 words
The pigment composition of claim 10 wherein the finely divided solid comprises carbon black.
Claim 21
Dependent Claim
34 words
The composition of claim 1 in which the polyvalent metal constituent of the dithiocarbamate salt is a member selected from the group aluminum, zirconium, strontium, zinc, lead, molybdenum, tungsten, phosphomolybdate, barium, copper and cadmium.
Claim 22
Independent Claim
125 words
A method of manufacturing a pigment composition comprising a substrate and a colorant, which method comprises the steps: admixing in an aqueous alkaline medium an amine, carbon disulfide, and polyvalent metal ions, thereby forming an aqueous dispersion of an insoluble multi-valent metal salt of dithiocarbamate; admixing with said aqueous medium a colorant; and separating the resulting solids from the aqueous medium; the carbon disulfide being added in an amount from between 90-110% of the total amount of carbon disulfide which can be added to the amine-containing medium prior to emanation of carbon disulfide odor from the medium at 100*C., and in which method the polyvalent metal ions are added in at least that amount which is necessary to bring about complete precipitation of the substrate.
Claim 23
Independent Claim
125 words
A method of manufacturing a pigment composition comprising a substrate and a colorant, which method comprises the steps: admixing in an aqueous alkaline medium an amine, carbon disulfide, and polyvalent metal ions, thereby forming an aqueous dispersion of an insoluble multi-valent metal salt of dithiocarbamate; admixing with said aqueous medium a colorant; and separating the resulting solids from the aqueous medium; the carbon disulfide being added in an amount from between 90-110% of the total amount of carbon disulfide which can be added to the amine-containing medium prior to emanation of carbon disulfide odor from the medium at 100*C., and in which method the polyvalent metal ions are added in at least that amount which is necessary to bring about complete precipitation of the substrate.
Claim 24
Dependent Claim
62 words
The method of claim 14 in which the amine ingredient is selected from the group consisting of: ammonia; aliphatic primary, secondary and tertiary amines containing up to 20 carbons; urea, thiourea; 2-alkyl imidazoline in which the alkyl group contains from 2-22 carbon atoms; aliphatic diamines; hydroxyl amines; amino ethanolamines; monoethanolamines; aniline, toluidine, xylidene, cyclohexalamine; dicyclohexalamine; 1,4-cyclohexane bis(methylamine), phenoldiethanolamine, phenolethanolamine, and N-Tolyl diethanolamine.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |