US4720305A
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Mixtures of pigments
Assignee: BASF Corp
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Filing: 1985-11-04
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Granted: 1988-01-19
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Expires: 2005-11-04
Abstract
Abstract The invention relates to a mixture of at least two different pigments of the formula ##STR1## with the difference lying in the meanings of the radicals A and B, in which the formula (I) A and B are the same or different alkyl, aralkyl, cycloalkyl, carbocyclic or heterocyclic aromatic radicals, which mixture of pigments is obtainable by (a) reacting 1 mole of a disuccinate with 1.75 to 1.998 moles of a nitrile of the formula ACN and 0.002 to 0.25 mole of a nitrile of the formula BCN or of a mixture of several nitriles of the formula BCN, the radicals B of which are different from A, or (b) reacting 1 mole of a lactam of formula (II) or of an enamine of formula (III) ##STR2## in which formula each of R and R' independently of the other is alkyl or aryl, with 0.75 to 0.998 mole of a nitrile of the formula ACN and 0.25 to 0.002 mole of a nitrile of the formula BCN or of a mixture of several nitriles of the formula BCN, the radicals B of which are different from A, in an organic solvent, in the presence of a strong base and at elevated temperature, and subsequently hydrolyzing the resultant reaction product. The mixture of pigments is suitable for coloring material of high molecular weight, in particular plastics and lacquers, in red shades of excellent fastness properties.
Inventors
- 👤 Abul Iqbal
- 👤 Johannes Pfenninger
- 👤 Alain C. Rochat
- 👤 Fridolin Babler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:07
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C07; C07D; C07D487/00; C07D487/02; C07D487/04; C09B57/00; C09B57/004
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
214 words
A mixture of pigments containing at least two different pigments of formula (I) ##STR8## with the difference lying in the meanings of the radicals A and B, in which formula (I) A and B are the same or different alkyl, aralkyl, cycloalkyl, carbocyclic or heterocyclic aromatic radicals, which mixture of pigments is obtainable by (a) reacting in a molar ratio 1 mole of a disuccinate with 1.75 to 1.998 moles of a nitrile of the formula ACN and 0.002 to 0.25 mole of a nitrile of the formula BCN or of a mixture of several nitriles of the formula BCN, the radicals B of which are different from A, or (b) reacting in a molar ratio 1 mole of a lactam of formula (II) or of an enamine of formula (III) ##STR9## in which formulae each of R and R' independently of the other is alkyl or aryl, with 0.75 to 0.998 mole of a nitrile of the formula ACN and 0.25 to 0.002 mole of a nitrile of the formula BCN or of a mixture of several nitriles of the formula BCN, the radicals B of which are different from A, in an organic solvent, in the presence of a strong base and at elevated temperature, and subsequently hydrolysing the resultant reaction product.
Claim 2
Dependent Claim
214 words
A mixture of pigments containing at least two different pigments of formula (I) ##STR8## with the difference lying in the meanings of the radicals A and B, in which formula (I) A and B are the same or different alkyl, aralkyl, cycloalkyl, carbocyclic or heterocyclic aromatic radicals, which mixture of pigments is obtainable by (a) reacting in a molar ratio 1 mole of a disuccinate with 1.75 to 1.998 moles of a nitrile of the formula ACN and 0.002 to 0.25 mole of a nitrile of the formula BCN or of a mixture of several nitriles of the formula BCN, the radicals B of which are different from A, or (b) reacting in a molar ratio 1 mole of a lactam of formula (II) or of an enamine of formula (III) ##STR9## in which formulae each of R and R' independently of the other is alkyl or aryl, with 0.75 to 0.998 mole of a nitrile of the formula ACN and 0.25 to 0.002 mole of a nitrile of the formula BCN or of a mixture of several nitriles of the formula BCN, the radicals B of which are different from A, in an organic solvent, in the presence of a strong base and at elevated temperature, and subsequently hydrolysing the resultant reaction product.
Claim 3
Dependent Claim
77 words
A mixture of pigments according to claim 1, obtainable by using per mole of a disuccinate or of the lactam of formula (II) or of the enamine of formula (III) 1.8 to 1.99 or 0.8 to 0.99 moles of the nitrile of the formula ACN and 0.01 to 0.2 mole of the nitrile of the formula BCN or of a mixture of several nitriles of the formula BCN, the radicals B of which are different from A.
Claim 4
Dependent Claim
77 words
A mixture of pigments according to claim 1, obtainable by using per mole of a disuccinate or of the lactam of formula (II) or of the enamine of formula (III) 1.9 to 1.98 or 0.9 to 0.98 moles of the nitrile of the formula ACN and 0.02 to 0.1 mole of the nitrile of the formula BCN or of a mixture of several nitriles of the formula BCN, the radicals B of which are different from A.
Claim 5
Dependent Claim
15 words
A mixture of pigments according to claim 1, obtainable by using a homogeneous nitrile BCN.
Claim 6
Dependent Claim
29 words
A mixture of pigments according to claim 1, obtainable by starting from nitriles of the formulae ACN and BCN, wherein A and B are carbocyclic or heterocyclic aromatic radicals.
Claim 7
Dependent Claim
128 words
A mixture of pigments according to claim 1, obtainable by starting from nitriles of the formulae ACN and BCN, wherein A and B are radicals of the formula ##STR10## which differ with respect to their chemical properties and/or the position of the substituents X, Y and Z, in which formula each of X, Y and Z independently is hydrogen, halogen, carbamoyl, cyano, trifluoromethyl, C 2 -C 13 alkylcarbamoyl, C 1 -C 12 alkyl, C 1 -C 12 alkoxy, C 1 -C 12 alkylmercapto, C 2 -C 13 alkoxycarbonyl, C 2 -C 13 alkanoylamino, C 1 -C 12 monoalkylamino, C 2 -C 24 dialkylamino, or is phenoxy, phenylmercapto, phenoxycarbonyl, phenylcarbamoyl or benzoylamino, each unsubstituted or substituted by halogen, C 1 -C 12 alkyl or C 1 -C 12 alkoxy.
Claim 8
Dependent Claim
21 words
A mixture of pigments according to claim 6, wherein at least one of the substituents X, Y and Z is hydrogen.
Claim 9
Dependent Claim
109 words
A mixture of pigments according to claim 1, obtainable by starting from nitriles of the formulae ACN and BCN, wherein A and B are radicals of the formula ##STR11## which differ with respect to their chemical properties and/or the position of the substituents X 1 and Y 1 , in which formula each of the substituents X 1 and Y 1 independently of the other is chlorine, bromine, C 1 -C 4 alkyl, cyano, C 1 -C 4 alkoxy, phenoxy which is unsubstituted or substituted by chlorine or methyl, or is carbamoyl, C 2 -C 5 alkylcarbamoyl, or phenylcarbamoyl which is unsubstituted or substituted by chlorine, methyl or methoxy.
Claim 10
Dependent Claim
20 words
A mixture of pigments according to claim 8, wherein one of the substituents X 1 and Y 1 is hydrogen.
Claim 11
Dependent Claim
68 words
A mixture of pigments according to claim 1, obtainable by starting from nitriles of the formulae ACN and BCN, wherein A and B are radicals of the formula ##STR12## in which formulae X 2 is methyl, isobutyl, chlorine, bromine, methoxy, phenoxy or cyano, X 3 is methyl, chlorine or cyano and X 4 is methyl or chlorine, or wherein A or B is a β-pyridyl or γ-pyridyl radical.
Claim 12
Dependent Claim
35 words
A mixture of pigments according to claim 1, obtainable by starting from nitriles, wherein A is the phenyl, 4-chlorophenyl or 4-biphenylyl radical and B is the phenyl, 3-chlorophenyl, 4-chlorophenyl, 4-methylphenyl, 4-isobutylphenyl, 4-bisphenylyl or 3-cyanophenyl radical.
Claim 13
Dependent Claim
28 words
A mixture of pigments according to claim 1, obtainable by using benzonitrile as the nitrile of the formula ACN and p-chlorobenzonitrile as the nitrile of the formula BCN.
Claim 14
Dependent Claim
28 words
A mixture of pigments according to claim 1, obtainable by using p-chlorobenzonitrile as the nitrile of the formula ACN and isophthalonitrile as the nitrile of the formula BCN.
Claim 15
Dependent Claim
28 words
A mixture of pigments according to claim 1, obtainable by using p-chlorobenzonitrile as the nitrile of the formula ACN and 4-cyanobiphenyl as the nitrile of the formula BCN.
Claim 16
Dependent Claim
28 words
A mixture of pigments according to claim 1, obtainable by using p-chlorobenzonitrile as the nitrile of the formula ACN and 4-cyanopyridine as the nitrile of the formula BCN.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |