Process for preparing phthalocyanine pigments
Abstract
Abstract PROCESS FOR THE MANUFACTURING OF PHTHALOCYANINE PIGMENTS HAVING IMPROVED BRIGHTNESS, GLOSS, TRANSPARENCY AND FLOW PROPERTIES BY TREATING WITH A POLAR ALIPHATIC SOLVENT AT LEAST PARTIALLY WATER-MISCIBLE, A METAL PC AND A MINOR PROPORTION OF A COPPER PC DERIVATIVE HAVING THE FORMULA CU-PC(-(SO2-N(-R1)-R)Y)-(S-C3(-)H2(+)-N(-R1)-R)X WHEREIN CUPC REPRESENTS THE COPPER PHTHALOCYANINE RESIDUE, EITHER CHLORINATED OR UNCHLORINATED, R REPRESENTS AN ALKYL GROUP HAVING FROM 1 TO 20 CARBON ATOMS OR AN ARYL GROUP, AND R1 REPRESENTS HYDROGEN OR AN ALKYL GROUP HAVING FROM 1 TO 20 CARBON ATOMS OR AN ARYL GROUP, THE ALKYL OR ARYL GROUPS BEING EITHER UNSUBSTITUTED OR SUBSTITUTED BY HYDROXYL, AMINO, ALKYLAMINO OR AMIDE SUBSTITUENTS, AND X AND Y EACH REPRESENT 1,2 OR 3 WITH THE PROVISO THAT THE SUM OF X AND Y IS 2,3 OR 4.
Inventors
- 👤 R Langley
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |