US2645643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing phthalocyanine coloring matters
Assignee: EIDP Inc
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Filing: 1950-10-06
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Granted: 1953-07-14
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Expires: 1970-10-06
Abstract
No abstract record available.
Inventors
- 👤 Hans B Gottlieb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:20
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0025; C09B67/0026; C09B67/0032
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
THE PROCESS OF CONVERTING A PHTHALOCYANINE COLORING MATTER INTO A FINE PARTICLE SIZE ADAPTED FOR USE AS A PIGMENT IN LIQUID ORGANIC PAINT VEHICLES, WHICH COMPRISES SUBJECTING SUCH COLORING MATTER TO BALL MILLING WITH FROM 4 TO 20 TIMES ITS OWN WEIGHT OF AN INORGANIC, WATER-SOLUBLE SALT, THE MIXTURE BEING MILLED HAVING INCORPORTED THEREIN A WATER-IMMISCIBLE, STEAM-DISTILLABLE ORGANIC LIQUID IN QUANTITY FROM 0.1 TO 0.5 PART BY WEIGHT FOR EACH PART BY WEIGHT OF COLORING MATTER IN THE MIXTURE, SAID LIQUID BEING ONE WHICH IS CHARACTERIZED BY ITS ABILITY TO TRANSFORM THE ALPHA FORM OF COPPER PHTHALOCYANINE INTO THE BETA FORM, AND SAID MIXTURE HAVING FURTHER INCORPORATED THEREIN A SOLVENT-ACTIVE DISPERSANT SELECTED FROM THE GROUP CONSISTING OF POLYTITANIUM ESTERS OF LONG-CHAIN FATTY ACIDS AND SORBITAN ESTERS OF LONGCHAIN FATTY ACIDS IN QUANTITY OF FROM 0.01 TO 0.1 PART BY WEIGHT FOR EACH PART BY WEIGHT OF COLORING MATTER IN THE MIXTURE.
Claim 2
Dependent Claim
151 words
THE PROCESS OF CONVERTING A PHTHALOCYANINE COLORING MATTER INTO A FINE PARTICLE SIZE ADAPTED FOR USE AS A PIGMENT IN LIQUID ORGANIC PAINT VEHICLES, WHICH COMPRISES SUBJECTING SUCH COLORING MATTER TO BALL MILLING WITH FROM 4 TO 20 TIMES ITS OWN WEIGHT OF AN INORGANIC, WATER-SOLUBLE SALT, THE MIXTURE BEING MILLED HAVING INCORPORTED THEREIN A WATER-IMMISCIBLE, STEAM-DISTILLABLE ORGANIC LIQUID IN QUANTITY FROM 0.1 TO 0.5 PART BY WEIGHT FOR EACH PART BY WEIGHT OF COLORING MATTER IN THE MIXTURE, SAID LIQUID BEING ONE WHICH IS CHARACTERIZED BY ITS ABILITY TO TRANSFORM THE ALPHA FORM OF COPPER PHTHALOCYANINE INTO THE BETA FORM, AND SAID MIXTURE HAVING FURTHER INCORPORATED THEREIN A SOLVENT-ACTIVE DISPERSANT SELECTED FROM THE GROUP CONSISTING OF POLYTITANIUM ESTERS OF LONG-CHAIN FATTY ACIDS AND SORBITAN ESTERS OF LONGCHAIN FATTY ACIDS IN QUANTITY OF FROM 0.01 TO 0.1 PART BY WEIGHT FOR EACH PART BY WEIGHT OF COLORING MATTER IN THE MIXTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |