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After-treatment of dyeings with reactive dyes on cellulose fiber materials
| Details |
Inventors: Fikentscher, Rolf; Heimann, Sigismund; Mertens, Heinrich; Schneider, Siegfried; Vescia, Michele;
Assignee: BASF Aktiengesellschaft (Ludwigshafen, DE)
Primary Examiner: Lieberman; Paul
Assistant Examiner: McNally; John F.
Attorney, Agent or Firm: Oblon, Fisher, Spivak, McClelland, & Maier
Dyeings with reactive dyes on cellulose fiber materials are after-treated with an aqueous solution of a condensate which is obtainable by reacting (a) bisbenzylpiperzine with (b) ethylene chloride, an epihalohydrin, propylene chloride, 1,3-dichloro-2-hydroxypropane, bisepoxybutane or 1,4-dichlorobutane or a mixture of these, in a molar ratio of from 1:0.5 to 1:1.1, or by reacting (c) piperazine, bis-1,4-aminopropylpiperazine, 1-aminoethylpiperazine, 2-hydroxyethylpiperazine or 1-methylpiperazine, or a mixture of these, with a compound according to (b) in a molar ratio of from 1:0.5 to 1:1.1 and benzylating the condensate, the benzylation being carried out using 0.15-1.0 mole of benzyl chloride per equivalent of nitrogen in component (c). The cellulose fiber materials after-treated in this manner possess very good wetfastness. |
|
DETAILED DESCRIPTION We claim: 1.
A process for the after-treatment of dyeings with reactive dyes on cellulose fiber materials, wherein the after-treatment is carried out using an aqueous solution of a cationic condensate which is obtainable by reacting (a) bisbenzylpiperazine with (b) ethylene chloride, an epihalohydrin, propylene chloride, 1,3-dichloro-2-hydroxypropane, bisepoxybutane or 1,4-dichlorobutane or a mixture of these, in a molar ratio of from 1:0.
5 to 1:1.
1, or by reacting (c) piperazine, bis-1,4-aminopropylpiperazine, 1-aminoethylpiperazine, 2-hydroxyethylpiperazine or 1-methylpiperazine, or a mixture of these, with a compound according to (b) in a molar ratio of from 1:0.
5 to 1:1.
1 and then benzylating the condensate from (b) or (c), 0.
15-1.
0 mole of benzyl chloride being used per equivalent of nitrogen in component (c) for the benzylation.
2.
A process as claimed in claim 1, wherein the after-treatment agent is used in an amount of from 0.
1 to 5% by weight, based on the cellulose fiber materials.
3.
A process as claimed in claim 1, wherein the after-treatment is carried out using an aqueous solution at from 5.
degree.
to 120.
degree.
C.
and at a pH of from 4 to 11.
4.
A process as claimed in claim 1, wherein the cationic condensate used is a benzylated piperazine/epichlorohydrin condensate.
Description:
German Laid-Open Application DOS No.
2,747,358 discloses that dyeings with reactive dyes on cellulose fiber materials can be after-treated with aqueous solutions of condensates of polyamines and epichlorohydrin at a pH of the aqueous solution of from 3.
5 to 11 and at, preferably, from 65.
degree.
to 100.
degree.
C.
The amounts of cationic condensates used are from 0.
5 to 4% by weight, based on the dry weight of the dyed goods.
Such a treatment can be used to improve the wetfastness of reactive dyes on cellulose, but a further improvement in the fastness properties of the after-treated dyeings is desirable.
It is an object of the present invention to provide a process for the after-treatment of dyeings with reactive dyes on cellulose fiber materials, which also gives textile materials which are dyed in deep hues and do not bleed onto an untreated undyed cotton fabric when subjected to a plating test
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