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US3864077A
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Non-Aqueous Dyestuffs with a Phthalic Acid Dialkyl Ester
Assignee: Bayer AG
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Filing: 1972-09-01
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Granted: 1975-02-04
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Expires: 1992-09-01
Abstract
Abstract Dyestuff preparations which contain (a) a water-soluble or water-dispersible dyestuff which is insoluble or sparingly soluble in phthalic acid C1-C8-dialkyl esters, (b) a phthalic acid C1-C8-dialkyl ester and (c) an anionic and/or non-ionic dispersing agent which has a minimum solubility of 1 g per litre of tetrachloroethylene at room temperature, and which are expecially suitable for the preparation of dyebaths of aliphatic halogenated hydrocarbons for dyeing fibre materials.
Inventors
- 👤 Gottfried Popp
- 👤 Wolfgang Haebler
- 👤 Wilhelm Gohrbandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:02
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65125; D06P1/90; D06P1/92; D06P1/922; D06P1/924
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
26 words
The storage-stable non-aqueous dyestuff dispersion of claim 1 in which the ratio (a) phthalic acid C1-C8-dialkyl ester: (c) dispersion agent: (b) dyestuff is 0.5:0.1:1 to 10:2:1.
Claim 2
Dependent Claim
18 words
The storage-stable non-aqueous diSpersion of claim 2 in which (a) the phthalic acid C1-C8-dialkyl ester is dibutyl phthalate.
Claim 3
Dependent Claim
93 words
A storage-stable non-aqueous dyestuff dispersion consisting essentially of a. a phthalic acid C1-C8-dialkyl ester; b. a water-soluble or water-dispersible dyestuff which is insoluble or sparingly soluble in phthalic acid C1-C8-dialkyl ester; and c. an anionic dispersing agent, a non-ionic dispersing agent, or a mixture of anionic and non-ionic dispersing agent having a minimum solubility of 1 g per litre of tetrachloroethylene; in which the ratio of (a) phthalic acid C1-C8-dialkyl ester: (c) dispersing agent: (b) dyestuff is 0.5:0.1:1 to 10:2:1; which dispersion is obtained by grinding or kneading (a), (b) and (c) together.
Claim 4
Dependent Claim
19 words
The storage-stable non-aqueous dyestuff dispersion of claim 4 in which (a), the phthalic acid C1-C8-dialkyl ester is dibutyl phthalate.
Claim 5
Dependent Claim
16 words
The storage-stable non-aqueous dyestuff dispersion of claim 4, which contains, in addition, an aliphatic halogenated hydrocarbon.
Claim 6
Dependent Claim
19 words
The storage-stable non-aqueous dyestuff dispersion of claim 6 in which said aliphatic halogenated hydrocarbon is trichloroethylene, tetrachloroethylene or 1,1,1-trichloropropane.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |