Claims
- 1. A new water-soluble anthraquinone dye which, in the form of the free acid, corresponds to the formula I ##STR17## wherein R.sub.1 represents a straight-chain or branched chain alkyl group having 4 to 8 carbon atoms,
- R.sub.2 and R.sub.3 independently of one another represent a straight-chain or branched-chain alkyl group having 1 to 4 carbon atoms,
- R.sub.4 represents hydrogen, an optionally acylated amino group, or a fibre-reactive radical bonded by way of an amino group,
- R.sub.5 represents hydrogen or a straight-chain or branched-chain alkyl group having 1 to 4 carbon atoms, and the phenylene rings
- A and/or B can be further substituted, with the proviso that one X of the symbols X.sub.1 and X.sub.2 represents the --SO.sub.3 H-- group, and the other X represents hydrogen.
- 2. A new water-soluble anthraquinone dye according to claim 1, wherein R.sub.1 represents branched-chain alkyl group having 4 to 8 carbon atoms.
- 3. A new water-soluble anthraquinone dye according to claim 2, wherein R.sub.1 represents the tert-butyl group.
- 4. A new water-soluble anthraquinone dye according to claim 1, wherein R.sub.2 and R.sub.3 each represent the methyl group.
- 5. A new water-soluble anthraquinone dye according to claim 1, wherein R.sub.4 represents hydrogen.
- 6. A new water-soluble anthraquinone dye according to claim 1, wherein R.sub.5 represents a straight-chain alkyl group having 1 or 2 carbon atoms.
- 7. A new water-soluble anthraquinone dye according to claim 1, wherein R.sub.1 represents the tert-butyl group, R.sub.2, R.sub.3 and R.sub.5 each represent the methyl group, R.sub.4 represents hydrogen, and one of the symbols X.sub.1 and X.sub.2 represents hydrogen and the other represents the sulpho group, and wherein the phenylene rings A and/or B are not further substituted.
- 8. Process for producing new water-soluble anthraquinone dyes according to claim 1 which, in the form of the free acid, correspond to the formula I. ##STR18## wherein R.sub.1 represents a straight-chain or branched-chain alkyl group having 4 to 8 carbon atoms,
- R.sub.2 and R.sub.3 independently of one another represent a straight-chain or branched-chain alkyl group having 1 to 4 carbon atoms,
- R.sub.4 represents hydrogen, an optionally acylated amino group, or a fibre-reactive radical bonded by way of an amino group,
- R.sub.5 represents hydrogen or a straight-chain or branched-chain alkyl group having 1 to 4 carbon atoms, and the phenylene rings
- A and/or B can be further substituted, with the proviso that one X of the symbols X.sub.1 and X.sub.2 represents the --SO.sub.3 H-- group, and the other X represents hydrogen, which process comprises reacting an anthraquinone compound which, in the form of the free acid, corresponds to the formula II ##STR19## wherein the symbols R.sub.2, R.sub.3, R.sub.4, R.sub.5, X.sub.1 and X.sub.2 have the aforesaid meanings, with a p-alkylphenol of the formula III ##STR20## wherein R.sub.1 has the aforesaid meaning, in the presence of acid-binding agents and at elevated temperature, to give an anthraquinone compound of the formula Ia ##STR21## wherein the symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, X.sub.1 and X.sub.2 have the aformentioned meanings; and optionally further substituting the phenylene ring of the phenoxy group in the 2-position, and/or the phenylene ring in the 4-position, of the anthraquinone nucleus.
- 9. Process according to claim 8, wherein an anthraquinone compound of the formula II wherein R.sub.4 represents an amino group that can be acylated is used as starting material; and, after reaction with the phenol of the formula III, the reaction product is acylated.
- 10. Process according to claims 8 or 9, wherein the reaction of the anthraquinone compound of the formula II with the phenol of the formula III is performed at a temperature of 180.degree. to 240.degree. C., particularly 220.degree. C.
Priority Claims (1)
Number |
Date |
Country |
Kind |
77419 |
May 1977 |
LUX |
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Parent Case Info
This is a Continuation of application Ser. No. 908,495 filed on May 23, 1978 now abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
2541623 |
von Allmen et al. |
Feb 1951 |
|
2580190 |
Peter et al. |
Dec 1951 |
|
3823168 |
Hohmann et al. |
Jul 1974 |
|
4224228 |
Adam |
Sep 1980 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
440505 |
Dec 1967 |
CHX |
Continuations (1)
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Number |
Date |
Country |
Parent |
908495 |
May 1978 |
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