US3989452A
Expired / Lapsed
US
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Stable, concentrated solutions of complex metal compounds of azo dyestuffs
Assignee: Novartis Corp
•
Filing: 1975-02-21
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Granted: 1976-11-02
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Expires: 1995-02-21
Abstract
Abstract Stable concentrated solutions of sulfogroup-containing azo-dyestuff-metal complexes in water-miscible organic solvents.
Inventors
- 👤 Paul Hugelshofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:35
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/02; D06P1/10; C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0072; C09B67/0073
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
100 words
A stable, concentrated substantially anhydrous solution of a metal complex azo dyestuff, wherein the solution contains 10 to 60% by weight of at least one heavy metal complex azo or azomethine dyestuff containing a sulfonic acid group, dissolved in 90 to 40% by weight of at least two water-miscible, organic solvents which are liquid at room temperature, selected from the group consisting of mono or polyalkylene glycol or thioglycol or ether thereof, a hydroxylated ketone, a cyclic ether, a lactam, lactone, dimethyl sulfoxide, sulfolan, sulfolene, hexamethylphosphoric acid triamide, dimethyl methyl phosphonate, N-methylpyrrolidone and a low molecular aliphatic carboxylic acid amide.
Claim 2
Dependent Claim
100 words
A stable, concentrated substantially anhydrous solution of a metal complex azo dyestuff, wherein the solution contains 10 to 60% by weight of at least one heavy metal complex azo or azomethine dyestuff containing a sulfonic acid group, dissolved in 90 to 40% by weight of at least two water-miscible, organic solvents which are liquid at room temperature, selected from the group consisting of mono or polyalkylene glycol or thioglycol or ether thereof, a hydroxylated ketone, a cyclic ether, a lactam, lactone, dimethyl sulfoxide, sulfolan, sulfolene, hexamethylphosphoric acid triamide, dimethyl methyl phosphonate, N-methylpyrrolidone and a low molecular aliphatic carboxylic acid amide.
Claim 3
Dependent Claim
87 words
A solution according to claim 1, wherein 10 to 60% by weight of at least one heavy metal complex azo or azomethine dyestuff containing a sulfonic acid group dissolved in 90 to 40% by weight of at least one water-miscible organic solvent boiling above 80° C selected from the group consisting of mono or polyalkylene gylcol or thioglycol or ether thereof, in admixture with a low molecular aliphatic carboxylic acid amide, a cyclic ether, dimethylsulfoxide, butyrolactone, sulfolan, hexamethylphosphoric acid triamide, dimethyl methyl phosphonate, N-methylpyrrolidone and/or diacetone alcohol.
Claim 4
Dependent Claim
38 words
A solution according to claim 2, wherein the organic solvents are selected from the group consisting of mono or polyalkylene gylcol or thioglycol or ether thereof, boiling above 80° C, diacetone alcohol, a cyclic ether, N,N-dimethylacetamide and N,N-dimethylformamide.
Claim 5
Dependent Claim
13 words
A solution according to claim 1, wherein the hydroxylated ketone is diacetone alcohol.
Claim 6
Dependent Claim
19 words
A solution according to claim 3, wherein the cyclic ether is selected from tetrahydrofuran, tetrahydrofurfuryl alcohol, dioxane, and glycolformal.
Claim 7
Dependent Claim
31 words
A solution according to claim 1, wherein the organic solvents are selected from the group consisting of mono or polyalkylene glycol or thioglycol or ether thereof, diacetone alcohol and tetrahydrofurfuryl alcohol.
Claim 8
Dependent Claim
38 words
A solution according to claim 2, wherein the organic solvent mixture consists of one or more polyhydric alcohol selected from mono alkylene glycols, poly alkylene glycols, thioglycols and ethers thereof, in admixture with tetrahydrofurfuryl alcohol and/or diacetone alcohol.
Claim 9
Dependent Claim
29 words
A solution according to claim 3, wherein the organic solvents are selected from the group consisting of mono or polyalkylene glycol or ether thereof, diacetone alcohol and tetrahydrofurfuryl alcohol.
Claim 10
Dependent Claim
20 words
A solution as claimed in claim 1, which contains a 1:1-nickel, 1:1-copper or 1:1-chromium or a 1:2-cobalt or 1:2-chromium complex.
Claim 11
Dependent Claim
45 words
A solution as claimed in claim 1, which contains a 1:1-copper or 1:1-chromium complex of an azo dyestuff of the naphthalene azonaphthalene series of a 1:2-cobalt or a 1:2-chromium mixed complex of an azo dyestuff of the naphthaleneazonaphthalene, benzeneazonaphthalene, benzeneazopyrazolone or benzeneazoacetoacetic acid amide series.
Claim 12
Dependent Claim
37 words
A solution as claimed in claim 1, which contains a 1:2-cobalt or 1:2-chromium complex of an azo or azomethine dyestuff in which one of the two dyestuff residues in the molecule is a disazo or azo-azomethine dyestuff.
Claim 13
Dependent Claim
21 words
A solution as claimed in claim 1, which contains a metal complex of an ortho-carboxy-ortho'-hydroxyazo or of an ortho, ortho'-dihydroxyazo dyestuff.
Claim 14
Dependent Claim
28 words
A solution as claimed in claim 1, which contains a 1:2-chromium complex of a monoazo dyestuff in which only one azo dyestuff residue contains a sulphonic acid group.
Claim 15
Dependent Claim
27 words
A solution as claimed in claim 1, which contains a 1:2-chromium complex of an ortho, ortho'-dihydroxymonoazo dyestuff of the naphthaleneazonaphthalene, benzeneazonaphthalene, benzeneazopyrazolone or benzenazoacetoacetic acid amide series.
Claim 16
Dependent Claim
43 words
A solution as claimed in claim 1, which contains a 1:2-chromium complex of a monoazo dyestuff of which one azo dyestuff residue contains a single sulphonic acid group and each azo dyestuff residue contains at least one nitro group and/or a halogen atom.
Claim 17
Dependent Claim
47 words
A solution according to claim 1, wherein, in addition to at least 10% by weight of heavy metal complex azo or azomethine dyestuff containing a sulfonic acid group, said solution contains in admixture therewith at most 50% by weight of at least one azo or azomethine dyestuff.
Claim 18
Dependent Claim
17 words
A solution as claimed in claim 1, which also contains at most 5% of a water-immiscible solvent.
Claim 19
Dependent Claim
15 words
A solution as claimed in claim 1, which contains a nonionic, anionic or kationic surfactant.
Claim 20
Dependent Claim
17 words
A solution as claimed in claim 1, which also contains up to 10% by weight of water.
Claim 21
Dependent Claim
16 words
A solution as claimed in claims 1, which also contains a substance that prevents mould formation.
Claim 22
Dependent Claim
17 words
A solution as claimed in claim 1, which also contains an anti-foaming agent or a dispersing agent.
Claim 23
Dependent Claim
28 words
A solution as claimed in claim 1, which also contains a substance that prevents crystallisation, said substance being selected from the group consisting of urea, thiourea or pentaerythritol.
Claim 24
Dependent Claim
19 words
A solution as claimd in claim 1, which contains 10 to 40% by weight of the azo dyestuff complex.
Claim 25
Dependent Claim
19 words
A solution as claimed in claim 1, which contains at least 15% by weight of the azo dyestuff complex.
Claim 26
Dependent Claim
19 words
A solution as claimed in claim 1, which contains at least 20% by weight of the azo dyestuff complex.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |