Patent US3960587A successfully refreshed from Google Patents.
US3960587A
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US
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Phthalocyanines, compositions derived therefrom and processes for their preparation
Assignee: Produits Chimiques Ugine Kuhlmann
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Filing: 1974-02-19
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Granted: 1976-06-01
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Expires: 1994-02-19
Abstract
Abstract Compounds falling within the formula: R1 - ¦ [Pc (SO3 )n]m/n (R2-N-CH2)m Pc (II) ¦+ R3 in which Pc represents the residue of a phthalocyanine, R1 represents an alkyl group of low molecular weight or a cycloalkyl group, R2 represents a hydrogen atom, an alkyl group of low molecular weight or a cycloalkyl group, R3 represents a hydrogen atom or an alkyl group of low molecular weight, R1 and R2 or R1, R2 and R3 may also form a heterocyclic residue with the nitrogen atom and m and n each represent a whole or fractional number from 1 to 4; mixture of phthalocyanine pigments comprising a phthalocyanine pigment unstable to flocculation or sedimentation and at least one compound of the above formula; process for the stabilization of a phthalocyanine pigment comprising incorporating therein at least one compound of the above formula; process for the preparation of a compound of the above formula comprising reacting a phthalocyanine-sulphonate of the formula:
Inventors
- 👤 Michel Ernest Antoine Huille
- 👤 Louis Antoine Cabut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:53
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/08; C09B47/12; C09B47/16; C09B47/24; C09B47/32; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0035
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
Mixture of phthalocyanine pigments which comprises a phthalocyanine pigment unstable to flocculation or sedimentation and 1% to 20% of at least one compound of the formula: ##EQU11## in which Pc represents the residue of a phthalocyanine, R 1 represents an alkyl group of low molecular weight or a cycloalkyl group, R 2 represents a hydrogen atom, an alkyl group of low molecular weight or a cycloalkyl group, R 3 represents a hydrogen atom or an alkyl group of low molecular weight, R 1 and R 2 or R 1 , R 2 and R 3 may also form a heterocyclic residue with the nitrogen atom and m and n each represent a whole or fractional number from 1 to 4.
Claim 2
Dependent Claim
120 words
Mixture of phthalocyanine pigments which comprises a phthalocyanine pigment unstable to flocculation or sedimentation and 1% to 20% of at least one compound of the formula: ##EQU11## in which Pc represents the residue of a phthalocyanine, R 1 represents an alkyl group of low molecular weight or a cycloalkyl group, R 2 represents a hydrogen atom, an alkyl group of low molecular weight or a cycloalkyl group, R 3 represents a hydrogen atom or an alkyl group of low molecular weight, R 1 and R 2 or R 1 , R 2 and R 3 may also form a heterocyclic residue with the nitrogen atom and m and n each represent a whole or fractional number from 1 to 4.
Claim 3
Dependent Claim
47 words
A process for the stabilisation of a phthalocyanine pigment in which the phthalocyanine pigment to be stabilised and 1% to 20% of at least one compound of the formula (II) given in claim 1 are mixed in aqueous suspension at ambient temperature, filtered off, drained and dried.
Claim 4
Dependent Claim
54 words
A process for the stabilisation of a phthalocyanine pigment in which the phthalocyanine pigment to be stabilised and 1% to 20% of at least one compound of the formula (II) given in claim 1 are ground dry in the presence of a water-soluble mineral salt, the mixture is dispersed in hot water and filtered.
Claim 5
Dependent Claim
169 words
A process for the stabilisation of a phthalocyanine pigment in which 1% to 20% of a compound of the formula (II) given in claim 1 is precipitated on the phthalocyanine pigment to be stabilised by the introduction of an acetic solution of a phthalocyanine of the formula: ##EQU12## in the form of the acetate or of an aqueous solution of a phthalocyanine of the formula: ##EQU13## into a suspension of the phthalocyanine to be stabilised in an aqueous solution of a phthalocyanine sulphonate of the formula: Pc (SO.sub.3 M).sub.n (III) at the rate of n/m moles of phthalocyanine of formula (IV) or (V) to one mole of compound of formula (III) and the solid is filtered off, drained and dried, wherein Pc, m, R 1 and R 2 have the meanings given in claim 1, R' 3 represents either an alkyl group of low molecular weight or, together with R 1 and R 2 , forms a heterocyclic residue and M represents sodium or potassium or the ammonium group.
Claim 6
Dependent Claim
29 words
A mixture according to claim 1 in which, in the compound of formula (II) m is a whole or fractional number from 2 to 3 and n is 1.
Claim 7
Dependent Claim
24 words
A mixture according to claim 1 in which, in the compound of formula (II), any alkyl group present contains 1 to 6 carbon atoms.
Claim 8
Dependent Claim
28 words
Mixture according to claim 1 in which the phthalocyanine pigment is copper phthalocyanine in its α, β, γ, ε, δ or R form or a halogenated derivative thereof.
Claim 9
Dependent Claim
22 words
A mixture according to claim 1 in which, in the compound of formula (II), any cycloalkyl group present contains six carbon atoms.
Claim 10
Dependent Claim
26 words
Mixture according to claim 1 containing by weight 2% to 10% of the compound of the formula (II) based on the total weight of the mixture.
Claim 11
Dependent Claim
22 words
A mixture according to claim 1 in which, in the compound of formula (II), any heterocyclic residue present is pyridine or quinoline.
Claim 12
Dependent Claim
15 words
A mixture according to claim 1 which comprises copper phthalocyanine and cuprophthalocyanine-sulphonate of copper tris-(dimethylamino-methyl)-phthalocyanine.
References Cited (Backward Citations)
US3764360A
Cited
US3754958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |