US3853574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing modified pigmentary compositions
Assignee: Individual
•
Filing: 1973-07-05
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Granted: 1974-12-10
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Expires: 1993-07-05
Abstract
Abstract Anhydrous silicate minerals are employed in combination with hydrous silicate minerals to produce pigmentary compositions by admixture of said minerals in a pulverized form with an inorganic binder followed by the formation of agglomerates which are calcined to produce pigmentary compositions embodying numerous particles of the minerals bonded together and presenting internal voids and multiple light reflecting surfaces. The compositions thus produced posess light reflecting properties greatly exceeding those of the minerals from which they are formed. Morever, the pigmentary compositions are characterized by specific gravities substantially below that of the material of which they are formed whereas the water absorption characteristics of the pigmentary compositions are relatively low, permitting their use in liquid or plastic media without adversely affecting the viscosity thereof beyond that attainable with other pigments.
Inventors
- 👤 T Ferrigno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:11
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/28; C01; C01P; C01P2004/00; C01P2004/20; C01P2004/30; C01P2004/32; C01P2004/50; C01P2004/51; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/80; C01P2006/00; C01P2006/10; C01P2006/60; C01P2006/80; C01P2006/82; C01P2006/90
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
133 words
A PIGMENTARY COOPOSITION COMPRISING CALCINED AGGLOMERATES CONSISTING ESSENTIALLY OF THE FOLLOWING IN PARTS BY WEIGHT ANHYDROUS SILICATE MINERAL FROM 40 TO 89 HYDROUS SILICATE MINERAL FROM 10 TO 50 INORGANIC BINDER FROM 1 TO 10 SAID INORGANIC BINDER BEING SELECTED FROM THE GROUP CONSISTING OF SODIUM POLYPHOSPHATES, EXPANDING LATTICE MONTMORILLONITE AND SOLUBLE SILICATES OF SODIUM, POTASSIUM AND LITTICE MONTMORILL ANHYDROUS SILICATE MINERALS BEING IN THE FROM OF PARTICLES HAVING AN AVERAGE SIZE IN THE RANGE OF RROM 2 TO 20 MICRONS AND SAID HYDROUS SILICATE MINERALS BEING IN THE FORM OF PARTICLES HAVING AN AVERAGE SIZE IN THE RANGE OF FROM 1.5 TO 20 MICRONS, SAID AGGLOMERATES RANGING IN SIZE FROM ABOUT 20 MICRONS TO ONE CENTIMETER AND HAVING A SPECIFIC GRAVITY AT LEAST 5 PERCENT BELOW THAT OF THE MINERALS CONTAINED THEREIN.
Claim 2
Dependent Claim
133 words
A PIGMENTARY COOPOSITION COMPRISING CALCINED AGGLOMERATES CONSISTING ESSENTIALLY OF THE FOLLOWING IN PARTS BY WEIGHT ANHYDROUS SILICATE MINERAL FROM 40 TO 89 HYDROUS SILICATE MINERAL FROM 10 TO 50 INORGANIC BINDER FROM 1 TO 10 SAID INORGANIC BINDER BEING SELECTED FROM THE GROUP CONSISTING OF SODIUM POLYPHOSPHATES, EXPANDING LATTICE MONTMORILLONITE AND SOLUBLE SILICATES OF SODIUM, POTASSIUM AND LITTICE MONTMORILL ANHYDROUS SILICATE MINERALS BEING IN THE FROM OF PARTICLES HAVING AN AVERAGE SIZE IN THE RANGE OF RROM 2 TO 20 MICRONS AND SAID HYDROUS SILICATE MINERALS BEING IN THE FORM OF PARTICLES HAVING AN AVERAGE SIZE IN THE RANGE OF FROM 1.5 TO 20 MICRONS, SAID AGGLOMERATES RANGING IN SIZE FROM ABOUT 20 MICRONS TO ONE CENTIMETER AND HAVING A SPECIFIC GRAVITY AT LEAST 5 PERCENT BELOW THAT OF THE MINERALS CONTAINED THEREIN.
Claim 3
Dependent Claim
22 words
A pigmentary composition as defined in claim 1, wherein the constituents thereof are present in the following proportions in parts by weight
Claim 4
Dependent Claim
19 words
A calcined pigmentary composition as defined in claim 1 having a water absorption not exceeding 10 percent by weight.
Claim 5
Dependent Claim
37 words
A calcined pigmentary composition as defined in claim 1 wherein said hydrous silicate mineral is selected from the group consisting of phyllosilicates, sorosilicates, tectosilicates, the amphibole group of inosilicates, perlite and the non-swelling montmorillonites, and mixtures thereof.
Claim 6
Dependent Claim
42 words
A calcined pigmentary composition as defined in claim 1 wherein said anhydrous silicate mineral is selected from the group consisting of silica; the silicates of berylium, magnesium, and calcium; and the alumino silicates of lithium, berylium, barium, sodium, potassium; and mixtures thereof.
Claim 7
Dependent Claim
26 words
A calcined pigmentary composition as defined in claim 1 wherein the average particle size of the anhydrous silicate mineral is from about 2 to 20 microns.
Claim 8
Dependent Claim
16 words
A calcined pigmentary composition as defined in claim 1 wherein the anhydrous silicate mineral is feldspar.
Claim 9
Dependent Claim
17 words
A calcined pigmentary composition As defined in claim 1 wherein said inorganic binder is an alkali silicate.
Claim 10
Dependent Claim
18 words
A calcined pigmentary composition as defined in claim 1 wherein said inorganic binder is an expanding lattice montmorillonite.
Claim 11
Dependent Claim
26 words
A calcined pigmentary composition as defined in claim 1 wherein said inorganic binder is a glassy phosphate containing from 4 to 100 phosphorous atoms per molecule.
Claim 12
Dependent Claim
30 words
A calcined pigmentary composition as defined in claim 1 wherein an opacifying agent is present in the composition in an amount up to 20 percent by weight of the product.
Claim 13
Dependent Claim
27 words
A calcined pigmentary composition as defined in claim 11 in which said opacifying agent is an inorganic colorant present in amounts up to 10 percent by weight.
Claim 14
Dependent Claim
29 words
A calcined pigmentary composition as defined in claim 1 wherein said anhydrous silicate is feldspar, said hydrous silicate is tremolite and said inorganic binder is an expanding lattice montmorillonite.
References Cited (Backward Citations)
US3533821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |