Claims
- 1. A process for dyeing a fiber material with a water-soluble, anionic dye, which comprises the steps of providing a dye solution which contains from 0 to 10 g/l of electrolyte salts; said dye solution further containing alkali in an amount to give a pH of from 4 to 8, and
- providing a natural or synthetic fiber material containing hydroxy or carboxamide groups or a combination thereof, which natural or synthetic fiber material has been modified by being brought into contact with an alkaline aqueous solution and a compound which contains a saturated aliphatic radical of 3 to 15 carbon atoms which is unsubstituted or substituted by 1 or 2 or more hydroxy groups and contains at least one primary, secondary or tertiary amino groups or quaternary ammonium group and at least one hydrolyzable ester group, the saturated radical(s) being straight-chain, branched or cyclic or a combination thereof and may be interrupted by one or more hetero groups, with the exception of compounds of the formula (A)
- (H.sub.2 N).sub.p -ALK-ER (A)
- in which p is the number 1 or 2, ER is an ester group and ALK is an unsubstituted straight-chain or branched alkylene of 2 to 6 carbon atoms which may be interrupted by 1 or more hetero groups, and
- dyeing said fiber material with said dye solution.
- 2. The process as claimed in claim 1, wherein the dye contains a fiber-reactive group.
- 3. The process as claimed in claim 1, wherein the compound by means of which the fiber was modified is a compound of the formula (1a) or (1b) ##STR33## in which ER is an ester group;
- A and N, together with 1 or 2 alkylene groups of 1 to 4 carbon atoms, form the bivalent radical of a heterocyclic ring, in which
- A is an oxygen atom or a group of the formula (a), (b) or (c) ##STR34## in which R is a hydrogen atom or an amino group or an alkyl group of 1 to 6 carbon atoms, which is optionally substituted by 1 or 2 substituents selected from the group consisting of amino, sulfo, hydroxy, sulfato, phosphato and carboxy, or is an alkyl group of 3 to 8 carbon atoms which is interrupted by 1 or 2 hetero groups selected from the group consisting of --O-- and --NH-- and is optionally substituted by an amino, sulfo, hydroxy, sulfato or carboxy group,
- R.sup.1 is hydrogen, methyl, or ethyl,
- R.sup.2 is hydrogen, methyl, or ethyl, and
- Z.sup.(-) is an anion;
- B is an amino group of the formula H.sub.2 N-- or an amino or ammonium group of the formula (d) or (e) ##STR35## in which R.sup.1, R.sup.2 and Z.sup.(-) have one of the abovementioned meanings,
- R.sup.2 is methyl or ethyl, and
- R.sup.4 is hydrogen, methyl, or ethyl;
- p is the number 1 or 2;
- alkylene is a straight chain or branched alkylene of 2 to 6 carbon atoms, which can be substituted by 1 or 2 hydroxy groups, or is a straight-chain or branched alkylene of 3 to 8 carbon atoms which is interrupted by 1 or 2 hetero groups selected from the group consisting of --O-- and --NH--;
- alk is a straight chain or branched alkylene of 2 to 6 carbon atoms, or is a straight-chain or branched alkylene of 3 to 8 carbon atoms which is interrupted by one or 2 hetero groups selected from the group consisting of --O-- and --NH--;
- m is the number 1 or 2;
- n is a number from 1 to 4;
- and the amino, hydroxy and ester groups can be bound to a primary, secondary or tertiary carbon atom on the alkylene group.
- 4. The process as claimed in claim 1, wherein the ester group of the compound by means of which the fiber was modified is a sulfato or phosphato group or a lower alkanoyloxy group, a phenylsulfonyloxy group, or a phenylsulfonyloxy group substituted on the benzene ring by substituents selected from the group consisting of carboxy, lower alkyl, lower alkoxy, and nitro.
- 5. The process as claimed in claim 1, wherein the modified fiber material is a modified polyester/cellulose fiber blend material and dyeing is carried out by a single-bath dyeing process using at least one reactive dye and further comprising at least one disperse dye.
- 6. A process according to claim 1, wherein the saturated aliphatic compound by means of which the fiber material is modified is a compound selected from the group consisting of N-(.beta.-sulfatoethyl) piperazine, N-[.beta.-(.beta.'-sulfatoethoxy)ethyl]piperazine,N-(.gamma.-sulfato-.beta.-hydroxypropyl)piperidine, N-(.gamma.-sulfato-.beta.-hydroxypropyl)pyrrolidine, N-(.gamma.-sulfatoethyl)piperidine, a 3-sulfato 2-hydroxypropyltrimethylammonium salt or a 2-sulfato 3-hydroxypropyltrimethylammonium salt, 2-sulfato-3-hydroxy-1-aminopropane, 3-sulfato-2 -hydroxy-1-aminopropane, 1-sulfato-3-hydroxy-2-aminopropane, 3-hydroxyl-1-sulfato-2-aminopropane, 2,3-disulfato-1-aminopropane or 1,3-disulfato-2-aminopropane, and derivatives of these compounds with an ester group other than the sulfato group.
- 7. A process according to claim 1, wherein the saturated aliphatic compound by means of which the fiber material is modified is a compound selected from the group consisting of N-(.beta.-sulfatoethyl)piperidine, N-(.gamma.-sulfato-.beta.-hydroxypropyl)piperidine, N-(.gamma.-sulfato-.beta.-hydroxypropyl)pyrrolidine, 3-sulfato-2-hydroxy-1-aminopropane, 2-sulfato-3-hydroxy-1-aminopropane, a 3-sulfato-2-hydroxypropyltrimethylammonium salt, a 2-sulfato-3-hydroxypropyltrimethylammonium salt, and derivatives of these compounds with an ester group other than the sulfato group.
- 8. A process as claimed in claim 1, wherein the dye solution is electrolyte free.
- 9. A process as claimed in claim 1, wherein the dye solution is alkali free.
- 10. A process as claimed in claim 1, wherein the dye solution is alkali and electrolyte free.
Priority Claims (2)
Number |
Date |
Country |
Kind |
41 40 410.6 |
Dec 1991 |
DEX |
|
42 24 283.5 |
Jul 1992 |
DEX |
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CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation of application Ser. No. 07/984,977, filed Dec. 3, 1992, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (4)
Number |
Date |
Country |
635252 |
Jan 1962 |
BEX |
638513 |
Jan 1963 |
BEX |
580544 |
Nov 1924 |
FRX |
479341 |
Feb 1938 |
GBX |
Non-Patent Literature Citations (4)
Entry |
Guthrie, J. D., Textile Research J. 17:625-629 (1947). |
Reeves, W. A., et al., Textile Research J. 23:522-527 (1953). |
Rath, H., Melliand Textilberichte 45:641-647 (1964). |
Roberts, E. J., et al, Textile Research J. 39:686-691 (1969). |
Continuations (1)
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Number |
Date |
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Parent |
984977 |
Dec 1992 |
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