US4171309A
Expired / Lapsed
US
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Process for the preparation of a solvent-stable, red-shade copper phthalocyanine pigment composition
Assignee: BASF Corp
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Filing: 1978-02-07
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Granted: 1979-10-16
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Expires: 1998-02-07
Abstract
Abstract A process for the preparation of a solvent-stable, red shade copper phthalocyanine pigment composition by reacting an organic compound capable of forming the phthalocyanine ring system, benzophenone 3,3',4,4'-tetracarboxylic acid or a derivative thereof, a copper compound capable of providing the copper atom of the copper phthalocyanine molecule, a reaction catalyst, and a nitrogen source, optionally in the presence of at least one phthalocyanine compound substituted by 1 to 4 groups of a sulphonate or sulphonic acid and/or sulphonamide which may be N-substituted.
Inventors
- 👤 Ian R. Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:42
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/06; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0035
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
218 words
In a process for the preparation of a solvent-stable, red-shade copper phthalocyanine pigment composition, wherein an organic compound capable of forming the phthalocyanine ring system, a copper compound capable of providing the copper atom of the copper phthalocyanine molecule, a reaction catalyst, and a nitrogen source are reacted at an elevated temperature and in an organic solvent wherein the improvement, whereby high quality pigments are obtained in a single stage reaction without the need for acid pasting or mechanical pulverization, which consists of (a) substituting 2.5-10% by weight of the organic compound capable of forming the phthalocyanine ring system with benzophenone-3,3',4,4'-tetracarboxylic acid or a derivative thereof; and (b) adding 0-20% by weight of the total pigment composition of a compound of the formula ##STR8## wherein Pc represents a metal - or a metal-free phthalocyanine residue, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different, and each represents a hydrogen atom, a cyclic or acyclic alkyl group, an aryl, aralkyl, alkaryl or dehydroabietyl group, M represents hydrogen, or an alkali metal atom, x, y and z are each in the range of from 0 to 4, with the proviso that the sum of x, y and z is within the range of from 1 to 4.
Claim 2
Dependent Claim
218 words
In a process for the preparation of a solvent-stable, red-shade copper phthalocyanine pigment composition, wherein an organic compound capable of forming the phthalocyanine ring system, a copper compound capable of providing the copper atom of the copper phthalocyanine molecule, a reaction catalyst, and a nitrogen source are reacted at an elevated temperature and in an organic solvent wherein the improvement, whereby high quality pigments are obtained in a single stage reaction without the need for acid pasting or mechanical pulverization, which consists of (a) substituting 2.5-10% by weight of the organic compound capable of forming the phthalocyanine ring system with benzophenone-3,3',4,4'-tetracarboxylic acid or a derivative thereof; and (b) adding 0-20% by weight of the total pigment composition of a compound of the formula ##STR8## wherein Pc represents a metal - or a metal-free phthalocyanine residue, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different, and each represents a hydrogen atom, a cyclic or acyclic alkyl group, an aryl, aralkyl, alkaryl or dehydroabietyl group, M represents hydrogen, or an alkali metal atom, x, y and z are each in the range of from 0 to 4, with the proviso that the sum of x, y and z is within the range of from 1 to 4.
Claim 3
Dependent Claim
23 words
A process as claimed in claim 1 wherein Pc represents a phthalocyanine residue containing Ti, V, Cr, Fe, Co, Ni, Zn or Cu.
Claim 4
Dependent Claim
39 words
A process as claimed in claim 1 wherein alkyl, cycloalkyl, aryl, aralkyl or alkaryl groups R 1 to R 6 are optionally interrupted by O, N or S heteroatoms and are optionally substituted by hydroxyl, amino or amide groups.
Claim 5
Dependent Claim
45 words
A process as claimed in claim 1 wherein, in the compound of formula I, x has a value in the range 0 to 2, and z and y each have a value in the range 0 to 3, subject to the proviso in claim 1.
Claim 6
Dependent Claim
33 words
A process as claimed in claim 1 wherein the benzophenone derivative is benzophenone-3,3',4,4'-tetracarboxylic acid or the dianhydride or an alkali metal salt thereof, or the -imide, -diimide, or -mono-, -di-, -tri-, or tetramide.
Claim 7
Dependent Claim
15 words
A solvent-stable, red-shade copper phthalocyanine composition when produced by the process claimed in claim 1.
References Cited (Backward Citations)
US3775423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-15 | 1983-04-16 | 1983-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-15 | 1987-04-16 | 1987-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-15 | 1991-04-16 | 1991-10-16 | $7700.00 | Window Closed / Lapsed |