US2933505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of chlorine-containing copper phthalocyanines
Assignee: EIDP Inc
•
Filing: 1957-02-05
•
Granted: 1960-04-19
•
Expires: 1977-02-05
Abstract
No abstract record available.
Inventors
- 👤 Jackson Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:15
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/06; C09B47/067; C09B47/08; C09B47/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PROCESS FOR THE PRODUCTION OF CHLORINE-CONTAINING COPPER PHTHALOCYANINE COLORING MATTERS BY HEATING AN O-ARYLENE DINITRILE AND A COPPER CHLORIDE AT A TEMPERATURE ABOVE 180*C. BUT BELOW THE TEMPERATURE AT WHICH THE DINITRILE WILL CARBONIZE UNTIL A BLUE SOLID COLORING MATTER IS OBTAINED, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID HEATING IN THE PRESENCE OF FROM .015 TO .15 MOL OF AN AROMATIC TERTIARY NITROGEN BASE PER MOL OF O-ARYLENE DINITRILE UNTIL THE BLUE SOLID COLORING MATTER IS OBTAINED, RECOVERING SAID COLORING MATTER AND REDUCING IT TO PIGMENT PARTICLE SIZE BY MECHANICAL MEANS AND RECOVERING A FLOCCULATION-RESISTANT, CRYSTAL-STABLE, CHLORINE-CONTAINING COPPER PHTHALOCYANINE PIGMENT EXHIBITING THE CHARACTERISTICS OF THE ALPHA CRYSTAL PHASE.
Claim 2
Dependent Claim
110 words
IN A PROCESS FOR THE PRODUCTION OF CHLORINE-CONTAINING COPPER PHTHALOCYANINE COLORING MATTERS BY HEATING AN O-ARYLENE DINITRILE AND A COPPER CHLORIDE AT A TEMPERATURE ABOVE 180*C. BUT BELOW THE TEMPERATURE AT WHICH THE DINITRILE WILL CARBONIZE UNTIL A BLUE SOLID COLORING MATTER IS OBTAINED, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID HEATING IN THE PRESENCE OF FROM .015 TO .15 MOL OF AN AROMATIC TERTIARY NITROGEN BASE PER MOL OF O-ARYLENE DINITRILE UNTIL THE BLUE SOLID COLORING MATTER IS OBTAINED, RECOVERING SAID COLORING MATTER AND REDUCING IT TO PIGMENT PARTICLE SIZE BY MECHANICAL MEANS AND RECOVERING A FLOCCULATION-RESISTANT, CRYSTAL-STABLE, CHLORINE-CONTAINING COPPER PHTHALOCYANINE PIGMENT EXHIBITING THE CHARACTERISTICS OF THE ALPHA CRYSTAL PHASE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |