US3754955A
Expired / Lapsed
US
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Phthalocyanines
Assignee: PRODUITS CHIMIQUES UGINE KUKLMANN
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Filing: 1971-11-22
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Granted: 1973-08-28
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Expires: 1991-11-22
Abstract
Abstract IN WHICH Pc is a phthalocyanine residue, the benzene nucleus A is unsubstituted or substituted by at least one alkyl group having up to 4 carbon atoms and n represents a whole number from 1 to 8; phthalocyanine pigment mixtures containing such a compound; process for the stabilisation of phthalocyanine pigments which comprises incorporating therein at least one compound of formula (I); and paints, lacquers, enamels, inks and plastic materials coloured by means of phthalocyanine pigment mixture containing a compound formula (I). Phthalocyanine compounds of the formula:
Inventors
- 👤 J Kienzle
- 👤 M Huille
- 👤 L Cabut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:19
CPC Classifications
C; C09; C09B; C09B68/00; C09B68/40; C09B68/42; C09B47/00; C09B47/04; C09B47/08; C09B47/12; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0035
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
15 words
A phthalocyanine pigment mixture as claimed in claim 1 wherein n is 3 or 4.
Claim 2
Dependent Claim
33 words
A mixture as claimed in claim 3 wherein there is 1 to 20 percent, based on the total weight of the mixture, of the compound of formula (I) as defined in claim 1.
Claim 3
Dependent Claim
18 words
A mixture comprising 25 parts of copper phthalocyanine in Alpha form and 1 part of tris-(benzothiazolyl-thio-methyl) copper phthalocyanine.
Claim 4
Dependent Claim
18 words
A mixture comprising 97.5 percent of copper phthalocyanine in Beta form and 2.5 percent of tris-(benzothiazolyl-thio-methyl) copper phthalocyanine.
Claim 5
Dependent Claim
19 words
A process for the stabilisation of phthalocyanine pigments which comprises incorporating therein at least one compound of the formula:
References 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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |