US3856545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigmentary composition
Assignee: Individual
•
Filing: 1972-11-15
•
Granted: 1974-12-24
•
Expires: 1992-11-15
Abstract
Abstract Comminuted anhydrous minerals are combined with inorganic binders and formed into agglomerates which, when calcined to cause fusion, contain internal voids and surfaces of minor porosity. The resulting compositions are useful in applications requiring high visible light reflectance.
Inventors
- 👤 T Ferrigno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:51
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; C01P2006/90
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
122 words
A WHITE APPEARING PIGMENTARY COMPOSITION COMPRISING CALCINED AGGLOMERATES CONSISTING OF FROM ABOUT 90 TO 99 PARTS BY WEIGHT OF ANHYDROYS SILICATES SELECTED FROM THE GROUP CONSISTING OF SILICA, THE SILICATES OF BERYLIUM, MAGNESIUM AND CALCIUM. ALUMINOSILICATES, THE ALUMINO-SILICATES OF LITHIUM, BERYLIUM, MAGNESIUM, BARIUM, SODIUM, POTASSIUM AND CALCIUM; AND MIXTURES THEREOF; 1 TO 10 PARTS BY WEIGHT OF AN INORGANIC BINDER SELECTED FROM THE GROUP CONSISTING OF GLASSY SODIUM POLYPHOSPATES HAVING FROM ABOUT 4 TO 100 PHOSPHOROUS ATOMS PER MOLECULE, EXPANDING LATTICE MONTMORILLONITES, SOLUBLE SILICATES OF SODIUM, POTASSIUM AND LITHIUM, AND MIXTURES THEREOF, SAID ANHYDROUS SILICATES CONSISTING OF PARTICLES HAVING AN AVERATE SIZE RANGING FROM ABOUT 2 TO 40 MICRONS AND SAID AGGLOMERATES RANGING IN SIZE FROM ABOUT 20 MICRONS TO 1 CENTIMETER.
Claim 2
Dependent Claim
122 words
A WHITE APPEARING PIGMENTARY COMPOSITION COMPRISING CALCINED AGGLOMERATES CONSISTING OF FROM ABOUT 90 TO 99 PARTS BY WEIGHT OF ANHYDROYS SILICATES SELECTED FROM THE GROUP CONSISTING OF SILICA, THE SILICATES OF BERYLIUM, MAGNESIUM AND CALCIUM. ALUMINOSILICATES, THE ALUMINO-SILICATES OF LITHIUM, BERYLIUM, MAGNESIUM, BARIUM, SODIUM, POTASSIUM AND CALCIUM; AND MIXTURES THEREOF; 1 TO 10 PARTS BY WEIGHT OF AN INORGANIC BINDER SELECTED FROM THE GROUP CONSISTING OF GLASSY SODIUM POLYPHOSPATES HAVING FROM ABOUT 4 TO 100 PHOSPHOROUS ATOMS PER MOLECULE, EXPANDING LATTICE MONTMORILLONITES, SOLUBLE SILICATES OF SODIUM, POTASSIUM AND LITHIUM, AND MIXTURES THEREOF, SAID ANHYDROUS SILICATES CONSISTING OF PARTICLES HAVING AN AVERATE SIZE RANGING FROM ABOUT 2 TO 40 MICRONS AND SAID AGGLOMERATES RANGING IN SIZE FROM ABOUT 20 MICRONS TO 1 CENTIMETER.
Claim 3
Dependent Claim
48 words
A white appearing pigmentary composition as defined in claim 1 wherein said agglomerates are characterized by a specific gravity of from about 60 to 95 percent of that of the anhydrous silicate contained therein and a water absorption not exceeding 10 percent of the weight of the agglomerate.
Claim 4
Dependent Claim
16 words
A white appearing pigmentary composition as defined in claim 1 wherein said anhydrous silicate is feldspar.
Claim 5
Dependent Claim
21 words
A white appearing pigmentary composition as defined in claim 1 wherein said anhydrous silicate is a mixture of silica and feldspar.
Claim 6
Dependent Claim
92 words
A white appearing pigmentary composition comprising calcined agglomerates having a size of from about 20 microns to one centimeter and containing about 94 to 99 parts by weight of feldspar in the form of particles having an average size ranging from about 2 to 40 microns, bonded together by about 1 to 6 parts by weight of a sodium polyphosphate having an average of from about 4 to 100 phosphorous atoms per molecule, said agglomerates having a specific gravity about 5 to 20 percent lower than that of the feldspar contained therein.
Claim 7
Dependent Claim
92 words
A white appearing pigmentary composition comprising calcined agglomerates having a size of from about 20 microns to one centimeter and containing about 94 to 99 parts by weight of feldspar in the form of particles having an average size ranging from about 2 to 40 microns, bonded together by about 1 to 6 parts by weight of a sodium polyphosphate having an average of from about 4 to 100 phosphorous atoms per molecule, said agglomerates having a specific gravity about 5 to 20 percent lower than that of the feldspar contained therein.
Claim 8
Dependent Claim
90 words
A white appearing pigmentary composition comprising calcined agglomerates having a size of from about 20 microns to one centimeter and containing about 94 to 99 parts by weight of feldspar in the form of particles having an average size of about 2 to 40 microns, bonded together by about 1 to 6 parts by weight of expanding lattice montmorillonite, said agglomerates having a specific gravity about 5 to 20 percent lower than that of the feldspar contained therein and having a water absorption less than about 5 percent by weight.
Claim 9
Dependent Claim
90 words
A white appearing pigmentary composition comprising calcined agglomerates having a size of from about 20 microns to one centimeter and containing about 94 to 99 parts by weight of feldspar in the form of particles having an average size of about 2 to 40 microns, bonded together by about 1 to 6 parts by weight of expanding lattice montmorillonite, said agglomerates having a specific gravity about 5 to 20 percent lower than that of the feldspar contained therein and having a water absorption less than about 5 percent by weight.
Claim 10
Dependent Claim
90 words
A white appearing pigmentary composition comprising calcined agglomerates having a size of from about 20 microns to one centimeter and containing about 94 to 99 parts by weight of feldspar in the form of particles having an average size of from about 2 to 40 microns bonded together by about 1 to 6 parts by weight of a soluble silicate, said agglomerates having a specific gravity about 5 to 20 percent lower than that of the feldspar contained therein and a water absorption less than about 5 percent by weight.
Claim 11
Dependent Claim
90 words
A white appearing pigmentary composition comprising calcined agglomerates having a size of from about 20 microns to one centimeter and containing about 94 to 99 parts by weight of feldspar in the form of particles having an average size of from about 2 to 40 microns bonded together by about 1 to 6 parts by weight of a soluble silicate, said agglomerates having a specific gravity about 5 to 20 percent lower than that of the feldspar contained therein and a water absorption less than about 5 percent by weight.
Claim 12
Independent Claim
154 words
A method of producing a white appearing pigmentary composition which comprises mixing together about 90 to 99 parts by weight of anhydrous silicate having an average particle size of about 2 to 40 microns, with from about 1 to 10 parts by weight of inorganic binder selected from the group consisting of glassy sodium polyphosphate having from about 4 to 100 phorphorous atoms per molecule, expanding lattice montmorillonites, and the soluble silicates of sodium, potassium and lithium and mixtures thereof, and forming water, forming said mixture into agglomerates having an average size ranging from about 20 microns to 1 centimeter, and thereafter calcining said agglomerates at a temperature sufficient to bond the particles of anhydrous silicate together and form a product composed of calcined agglomerates chractertized by a specific gravity of from about 60 to 95 percent of that of the anhydrous silicate and a water absorption of less than 10 percent by weight.
Claim 13
Independent Claim
154 words
A method of producing a white appearing pigmentary composition which comprises mixing together about 90 to 99 parts by weight of anhydrous silicate having an average particle size of about 2 to 40 microns, with from about 1 to 10 parts by weight of inorganic binder selected from the group consisting of glassy sodium polyphosphate having from about 4 to 100 phorphorous atoms per molecule, expanding lattice montmorillonites, and the soluble silicates of sodium, potassium and lithium and mixtures thereof, and forming water, forming said mixture into agglomerates having an average size ranging from about 20 microns to 1 centimeter, and thereafter calcining said agglomerates at a temperature sufficient to bond the particles of anhydrous silicate together and form a product composed of calcined agglomerates chractertized by a specific gravity of from about 60 to 95 percent of that of the anhydrous silicate and a water absorption of less than 10 percent by weight.
Claim 14
Dependent Claim
41 words
A method as defined in claim 8 wherein said anhydrous silicate is selected from the group consisting of silica; the silicates of berylium, magnesium, and calcium; alumino-silicate; the alumino-silicates of lithium, berylium, magnesium, barium, sodium, potassium, and calcium; and mixtures thereof.
Claim 15
Dependent Claim
21 words
A method as defined in claim 8 wherein said anhydrous silicate is feldspar and said inorganic binder is expanding lattice montmorillonite.
Claim 16
Dependent Claim
26 words
A method as defined in claim 8 wherein said anhydrous silicate is a mixture of silica and feldspar, and said inorganic binder is expanding lattice montmorillonite.
References Cited (Backward Citations)
US3366501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |