US3985570A
Expired / Lapsed
US
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Stable phthalocyanine pigments
Assignee: Produits Chimiques Ugine Kuhlmann
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Filing: 1975-07-15
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Granted: 1976-10-12
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Expires: 1995-07-15
Abstract
Abstract The preparation of pigment compositions with a copper phthalocyanine base, stable to crystallization is described.
Inventors
- 👤 Louis Antoine Cabut
- 👤 Jean-Claude Henri Raoul Hardouin
- 👤 Michel Ernest Antoine Huille
- 👤 Daniel Francois Xavier Pigasse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:28
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; C09B68/46; C09B68/463
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
93 words
A pigment composition consisting of an admixture of a copper phthalocyanine pigment with 1 to 20% of a stabilizing compound of the formula: ##SPC4## wherein Pc represents unmetallized or metallized phthalocyanine X represents oxygen, sulfur or the --NH-- bridge, R 1 represents halogen, alkoxy, trifluoromethyl, trifluoromethoxy, cyano, carboxy, nitro, N-alkylamino or N,N-dialkylamino, R 2 represents hydrogen, alkyl or alkoxy, R 3 represents hydrogen or alkyl, n is a number from 1 to 8, R 1 , r 2 and R 3 being in the ortho, meta or para positions of the benzene ring.
Claim 2
Dependent Claim
93 words
A pigment composition consisting of an admixture of a copper phthalocyanine pigment with 1 to 20% of a stabilizing compound of the formula: ##SPC4## wherein Pc represents unmetallized or metallized phthalocyanine X represents oxygen, sulfur or the --NH-- bridge, R 1 represents halogen, alkoxy, trifluoromethyl, trifluoromethoxy, cyano, carboxy, nitro, N-alkylamino or N,N-dialkylamino, R 2 represents hydrogen, alkyl or alkoxy, R 3 represents hydrogen or alkyl, n is a number from 1 to 8, R 1 , r 2 and R 3 being in the ortho, meta or para positions of the benzene ring.
Claim 3
Dependent Claim
17 words
A pigment composition according to claim 1 wherein the phthalocyanine pigment is copper phthalocyanine in beta form.
Claim 4
Dependent Claim
23 words
A pigment composition according to claim 1 wherein the phthalocyanine pigment is copper phthalocyanine in one of the forms alpha, gamma, delta, epsilon.
Claim 5
Dependent Claim
22 words
A pigment composition according to claim 1 containing the stabilizing compound of formula (I) wherein n is equal to 2 or 3.
Claim 6
Dependent Claim
15 words
A pigment composition according to claim 1 containing 2 to 10% of the stabilizing compound.
Claim 7
Dependent Claim
30 words
A process for the stabilization of copper phthalocyanine pigments which comprises incorporating into a copper phthalocyanine pigment from 1 to 20% of a stabilizing compound as defined in claim 1.
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) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |