Patent US3973982A successfully refreshed from Google Patents.
US3973982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated pigments
Assignee: Vibrantz Corp
•
Filing: 1975-02-07
•
Granted: 1976-08-10
•
Expires: 1995-02-07
Abstract
Abstract This invention relates to pigments and, more particularly, to the provision of a coating on pigments to improve their heat stability and/or abrasion resistance.
Inventors
- 👤 John Francis Bingham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:26
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/006; C09C3/06; C09C3/063; C09C3/08; C09C3/10; C09C3/12; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
81 words
A method of manufacturing particulate chrome pigments having good abrasion resistance and color stability, which comprises encapsulating the pigment particles in a coating selected from the class consisting of aromatic carboxylic acids and their insoluble salts, singly or in combination, the amount of said coating totalling between about 1 to 50 percent of the total weight of the coated product, and recovering said pigment in the form of individual particles each having said coating composition overlaying and encapsulating said pigment particle.
Claim 2
Independent Claim
81 words
A method of manufacturing particulate chrome pigments having good abrasion resistance and color stability, which comprises encapsulating the pigment particles in a coating selected from the class consisting of aromatic carboxylic acids and their insoluble salts, singly or in combination, the amount of said coating totalling between about 1 to 50 percent of the total weight of the coated product, and recovering said pigment in the form of individual particles each having said coating composition overlaying and encapsulating said pigment particle.
Claim 3
Dependent Claim
68 words
A chrome pigment having good abrasion resistance and color stability, consisting essentially of individual pigment particles each having a surface coating thereon consisting of, singly or in combination, a compound selected from the class consisting of aromatic carboxylic acids and their insoluble salts, said coating present on each said particle in an amount of from about 1 to 50 percent of the total weight of the coated particles.
Claim 4
Dependent Claim
68 words
A chrome pigment having good abrasion resistance and color stability, consisting essentially of individual pigment particles each having a surface coating thereon consisting of, singly or in combination, a compound selected from the class consisting of aromatic carboxylic acids and their insoluble salts, said coating present on each said particle in an amount of from about 1 to 50 percent of the total weight of the coated particles.
Claim 5
Independent Claim
109 words
A method of manufacturing particulate chrome pigments having good abrasion resistance and color stability which comprises first encapsulating said pigment particles in a surface coating of silica in an amount between about 2 to 50 weight percent of said pigment, then encapsulating said silica coated pigment particles in a coating selected from the class consisting of aromatic carboxylic acids and their insoluble salts, singly or in combination, the amount of said coating composition totalling between about 1 to 50 percent of the total weight of the coated product, and recovering said pigment in the form of individual particles each having said coating composition overlaying and encapsulating said pigment particle.
Claim 6
Independent Claim
109 words
A method of manufacturing particulate chrome pigments having good abrasion resistance and color stability which comprises first encapsulating said pigment particles in a surface coating of silica in an amount between about 2 to 50 weight percent of said pigment, then encapsulating said silica coated pigment particles in a coating selected from the class consisting of aromatic carboxylic acids and their insoluble salts, singly or in combination, the amount of said coating composition totalling between about 1 to 50 percent of the total weight of the coated product, and recovering said pigment in the form of individual particles each having said coating composition overlaying and encapsulating said pigment particle.
Claim 7
Independent Claim
109 words
A method of manufacturing particulate chrome pigments having good abrasion resistance and color stability which comprises first encapsulating said pigment particles in a surface coating of alumina in an amount between about 0.2 to 50 weight percent of said pigment, then encapsulating said alumina coated pigment particles in a coating selected from the class consisting of aromatic carboxylic acids and their insoluble salts, singly or in combination, the amount of said coating composition totalling between about 1 to 50 percent of the total weight of the coated product, and recovering said pigment in the form of individual particles each having said coating composition overlaying and encapsulating said pigment particle.
Claim 8
Independent Claim
109 words
A method of manufacturing particulate chrome pigments having good abrasion resistance and color stability which comprises first encapsulating said pigment particles in a surface coating of alumina in an amount between about 0.2 to 50 weight percent of said pigment, then encapsulating said alumina coated pigment particles in a coating selected from the class consisting of aromatic carboxylic acids and their insoluble salts, singly or in combination, the amount of said coating composition totalling between about 1 to 50 percent of the total weight of the coated product, and recovering said pigment in the form of individual particles each having said coating composition overlaying and encapsulating said pigment particle.
Claim 9
Dependent Claim
127 words
A chrome pigment having good abrasion resistance and color stability consisting essentially of individual pigment particles, each said particle having a first surface coating thereon consisting of a compound selected from the class consisting of silica and alumina, in an amount of silica of from about 2 to 50 weight percent of said pigment, and of alumina of from about 0.2 to 50 weight percent of said pigment, each said coated pigment particle having a second, outer surface coating thereon consisting of, singly or in combination, a compound selected from the class consisting of aromatic carboxylic acids and their insoluble salts, said second coating present on each said particle in an amount from about 1 to 50 percent of the total weight of said final, coated particle.
Claim 10
Dependent Claim
127 words
A chrome pigment having good abrasion resistance and color stability consisting essentially of individual pigment particles, each said particle having a first surface coating thereon consisting of a compound selected from the class consisting of silica and alumina, in an amount of silica of from about 2 to 50 weight percent of said pigment, and of alumina of from about 0.2 to 50 weight percent of said pigment, each said coated pigment particle having a second, outer surface coating thereon consisting of, singly or in combination, a compound selected from the class consisting of aromatic carboxylic acids and their insoluble salts, said second coating present on each said particle in an amount from about 1 to 50 percent of the total weight of said final, coated particle.
Claim 11
Dependent Claim
84 words
The method of claim 1 wherein the class of aromatic carboxylic acids is selected from the group consisting of phthalic, isophthalic, terephthalic, benzoic, o-, m- and p- toluic, 2, 4, 6- trimethylbenzoic, anisic, salicylic, acetylsalicylic, protocatechuic, diphenylacetic, p- hydroxyphenylacetic, 2, 4, 6- trichlorobenzoic, 4, 6- dichloroisophthalic, 2- aminoisophthalic, 4, 5- dimethoxyisophthalic (isohemipinic), 4- hydroxyisophthalic, trimesic, pyromellitic, naphthoic and naphthalic; and the class of insoluble salts of said aromatic carboxylic acids consists essentially of the calcium, barium, aluminum and lead salts of the foregoing acids.
Claim 12
Dependent Claim
84 words
The pigment of claim 2 wherein the class of aromatic carboxylic acids is selected from the group consisting of phthalic, isophthalic, terephthalic, benzoic, o-, m- and p- toluic, 2, 4, 6- trimethylbenzoic, anisic, salicyclic, acetylsalicylic, protocatechuic, diphenylacetic, p- hydroxyphenylacetic, 2, 4, 6- trichlorobenzoic, 4, 6- dichloroisophthalic, 2- aminoisophthalic, 4, 5- dimethoxyisophthalic (isohemipinic), 4- hydroxyisophthalic, trimesic, pyromellitic, naphthoic and naphthalic; and the class of insoluble salts of said aromatic carboxylic acids is selected from the group consisting of their calcium, barium, aluminum and lead salts.
Claim 13
Dependent Claim
88 words
The method of claim 3 wherein the class of aromatic carboxylic acids is selected from the group consisting of phthalic, isophthalic, terephthalic, benzoic, o-, m- and p- toluic, 2, 4, 6- trimethylbenzoic, anisic, salicylic, acetylsalicylic, protocatechuic, diphenylacetic, p- hydroxyphenylacetic, 2, 4, 6- trichlorobenzoic, 4, 6- dichloroisophthalic, 2- aminoisophthalic, 4, 5- dimethoxyisophthalic (isohemipinic), 4- hydroxyisophthalic, trimesic, pyromellitic, naphthoic and naphthalic; and the class of insoluble salts of said aromatic carboxylic acids is selected from the group consisting of the calcium, barium, aluminum and lead salts of the foregoing acids.
Claim 14
Dependent Claim
88 words
The method of claim 4 wherein the class of aromatic carboxylic acids is selected from the group consisting of phthalic, isophthalic, terephthalic, benzoic, o-, m- and p- toluic, 2, 4, 6- trimethylbenzoic, anisic, salicylic, acetylsalicylic, protocatechuic, diphenylacetic, p- hydroxyphenylacetic, 2, 4, 6- trichlorobenzoic, 4, 6- dichloroisophthalic, 2- aminoisophthalic, 4, 5- dimethylisophthalic (isohemipinic), 4- hydroxyisophthalic, trimesic, pyromellitic, naphthoic and naphthalic; and the class of insoluble salts of said aromatic carboxylic acids is selected from the group consisting of the calcium, barium, aluminum and lead salts of the foregoing acids.
Claim 15
Dependent Claim
84 words
The pigment of claim 5 wherein the class of aromatic carboxylic acids is selected from the group consisting of phthalic, isophthalic, terephthalic, benzoic, o-, m- and p- toluic, 2, 4, 6- trimethylbenzoic, anisic, salicylic, acetylsalicylic, protocatechuic, diphenylacetic, p- hydroxyphenylacetic, 2, 4, 6- trichlorobenzoic, 4, 6- dichloroisophthalic, 2- aminoisophthalic, 4, 5- dimethoxyisophthalic (isohemipinic), 4- hydroxyisophthalic, trimesic, pyromellitic, naphthoic and naphthalic; and the class of insoluble salts of said aromatic carboxylic acids is selected from the group consisting of their calcium, barium, aluminum and lead salts.
Claim 16
Dependent Claim
45 words
The method of claim 1 wherein the class of aromatic carboxylic acids is selected from the group consisting of isophthalic, benzoic, salicylic and terephthalic; and the class of insoluble salts of said acids is selected from the group consisting of calcium isophthalate and lead isophthalate.
Claim 17
Dependent Claim
45 words
The pigment of claim 2 wherein the class of aromatic carboxylic acids is selected from the group consisting of isophthalic, benzoic, salicylic and terephthalic; and the class of insoluble salts of said acids is selected from the group consisting of calcium isophthalate and lead isophthalate.
Claim 18
Dependent Claim
45 words
The method of claim 3 wherein the class of aromatic carboxylic acids is selected from the group consisting of isophthalic, benzoic, salicylic and terephthalic; and the class of insoluble salts of said acids is selected from the group consisting of calcium isophthalate and lead isophathalate.
Claim 19
Dependent Claim
45 words
The method of claim 4 wherein the class of aromatic carboxylic acids is selected from the group consisting of isophthalic, benzoic, salicylic and terephthalic; and the class of insoluble salts of said acids is selected from the group consisting of calcium isophthalate and lead isophthalate.
Claim 20
Dependent Claim
45 words
The pigment of claim 5 wherein the class of aromatic carboxylic acids is selected from the group consisting of isophthalic, benzoic, salicylic and terephthalic; and the class of insoluble salts of said acids is selected from the group consisting of calcium isophthalate and lead isophthalate.
References Cited (Backward Citations)
US3470007A
Cited
US3656986A
Cited
US3660130A
Cited
US3728142A
Cited
US3748163A
Cited
US3773535A
Cited
US3849152A
Cited
US3826670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |