Claims
- 1. In a process for spin-dyeing a water-insoluble thermoplastic polyester with a nickel-complex disazomethine coloring compound, the improvement consisting of spinning a melt of said polyester containing dissolved therein, as the coloring compound, a disazomethine compound of the formula (1) ##STR6## in which X and Y each is hydrogen, alkyl of from 1 to 4 carbon atoms, alkoxy of from 1 to 4 carbon atoms, carboxy or carbalkoxy of from 1 to 4 carbon atoms in the alkyl moiety, and
- Z is hydrogen, carboxy or carbalkoxy of from 1 to 4 carbon atoms in the alkyl moiety,
- X, Y and Z being identical or different to each other, with the proviso that either X or Y or both are not hydrogen if Z is hydrogen.
- 2. A process according to claim 1, wherein the disazomethine compound is a compound of formula (1) in which
- X is hydrogen, Y is carboxy and Z is hydrogen, or X is hydrogen, Y is methoxy and Z is hydrogen, or
- X is hydrogen, Y is ethoxy and Z is hydrogen.
- 3. A process according to claim 1 with a coloring compound of formula (1) wherein X is methoxy, ethoxy, carboxy or carbalkoxy of from 1 to 4 carbon atoms in the alkyl moiety, and Y and Z each is hydrogen.
- 4. A process according to claim 1 or 3 wherein the compound of formula (1) is applied to the suface of the polyester and these components are melted together, or wherein the compound of formula (1) is added to a melt of the polyester, and dissolved therein.
- 5. A process according to claim 1 or 3 wherein the compound of formula (1) is added to a reaction mixture for the preparation of the polyester consisting essentially of an aromatic dicarboxylic acid and an aliphatic dihydroxy compound, or of .epsilon.-caprolactone.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2801288 |
Jan 1978 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 002,250 filed Jan 10, 1979 now abandoned.
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Number |
Name |
Date |
Kind |
2571319 |
Waters et al. |
Oct 1951 |
|
3489713 |
Bowman et al. |
Jan 1970 |
|
4038241 |
Inman et al. |
Jul 1977 |
|
4042611 |
Papenfuhs et al. |
Aug 1977 |
|
4097510 |
Papenfuhs et al. |
Jun 1978 |
|
4113759 |
Papenfuhs et al. |
Sep 1978 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
847959 |
Sep 1960 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
2250 |
Jan 1979 |
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