Patent US4548968A successfully refreshed from Google Patents.
US4548968A
Expired / Lapsed
US
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Manufacture of resin extended pigments
Assignee: Novartis Corp
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Filing: 1984-06-01
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Granted: 1985-10-22
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Expires: 2004-06-01
Abstract
Abstract A process for preparing a resin extended pigment from crude pigment is disclosed. The process involves dry premilling the crude pigment with the resin followed by comilling the pre-milled pigment with the resin in the presence of water under alkaline conditions.
Inventors
- 👤 Edward E. Jaffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:40
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/006; C09B48/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
43 words
A process comprising dry milling a crude organic pigment to a low-crystallinity state in the presence of from 10 to 75% by weight based on pigment of a water-insoluble thermoplastic resin followed by milling the thus obtained product in water at pH 7-14.
Claim 2
Dependent Claim
43 words
A process comprising dry milling a crude organic pigment to a low-crystallinity state in the presence of from 10 to 75% by weight based on pigment of a water-insoluble thermoplastic resin followed by milling the thus obtained product in water at pH 7-14.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein the aqueous milling step is carried out at pH 9-13.5.
Claim 4
Dependent Claim
37 words
The process of claim 2 wherein the pigment is quinacridone or a derivative thereof or a solid solution of two or more quinacridones or quinacridone derivates or copper phthalocyanine, or a partially or completely halogenated copper phthalocyanine.
Claim 5
Dependent Claim
36 words
The process of claim 3 wherein the resin is a polymer of ethylene containing up to 25% of a monomer selected from the class consisting of acrylic acid, methacrylic acid, vinyl acetate and oxidized ethylene units.
Claim 6
Dependent Claim
21 words
The process of claim 4 wherein the resin has a softening point of from 80°-140° C. as determined by ASTM E-28.
Claim 7
Dependent Claim
16 words
The process of claim 5 wherein the pigment is copper phthalocyanine or a halogenated copper phthalocyanine.
Claim 8
Dependent Claim
107 words
The process of claim 5 wherein the pigment consists essentially of a quinacridone or quinacridone of the formula ##STR3## and solid solutions or mixtures thereof, and up to 15 weight percent of a quinacridone of the formula ##STR4## where R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are hydrogen, fluorine, chlorine, bromine methyl or methoxy; R 7 , R 9 and R 10 are hydrogen or chlorine and R 8 is hydrogen, chlorine, bromine, nitro, alkyl groups of 1-5 carbon atroms, alkoxy groups of or 2 carbon atoms or benzoylamino, and m is an integer of from 1-4.
Claim 9
Dependent Claim
24 words
The process of claim 7 wherein the quinacridone is a solid solution consisting essentially of 2,9-dimethylquinacridone, quinacridone, and up to 5% by weight phthalimidomethylquinacridone.
Claim 10
Dependent Claim
22 words
The process of claim 7 wherein the quinacridone is a solid soluiton consisting essentially of 4,11-dichloroquinacridone, quinacridone and up to 5% phthalimidomethylquinacridone.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |