Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Leather dyeing
Patent
1997-09-15
1999-06-01
Einsmann, Margaret
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Leather dyeing
8554, 8917, 8918, 8924, 8442, 525192, 525193, 525217, D06P 152, D06P 508
Patent
active
059084740
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to textile after-treatment agents. The after-treatment agents are dye-fixing agents for improving the fastness properties of dyeings and prints, a process for the production thereof, and the use thereof.
Dyeings and prints often have unsatisfactory wet fastness, especially washing and water fastness. This is found with dyeings carried out using direct dyestuffs, acid dyestuffs and to a lesser extent reactive dyestuffs. Substantive dyestuffs are those which have an affinity with the fibre to which they are applied. All direct dyestuffs are regarded as being substantive to cellulosic materials in nature, whereas the reactive dyes are considered substantive as well as reactive. In the case of all reactive dyestuffs, part of the dyestuff will react chemically with a hydroxyl group on the cellulosic fibre and part of the dyestuff will not react with the fibre, but generally will be in a hydrolysed form. The part of the dyestuff which has not chemically reacted with the fibre may be removed by repeated washing. Acid dyes have a direct affinity towards protein fibres and are the main type of dyestuff used in wool dyeing. Direct dyestuffs are however the first choice for dyeing cellulosic materials, having a strong affinity for them. It is undesirable that dyestuffs exhibit a lack of wet-fastness since the thus removed dyestuff may be absorbed by undyed textile material being washed in the same washing operation and in addition the dyed substrate does not retain its original dyed colour. It is known to treat the textile after dyeing with a dye-fixing agent in order to improve the wet-fastness of the dye.
EP 0 250 365 (U.S. Pat. No. 4,822,374), discloses a dye-fixing process which particularly improves the wet fastness of cellulosic dyeings produced with substantive dyestuffs, whereby the fibre material is treated with a polyquaternary ammonium compound of a N-alkyl-diallylamine polymerisate.
In DE 3938918 there are described, inter alia, textile dye-fixing agents in the form of mixtures of copolymers of various allylamines with a condensate of epichlorohydrin and a polyalkylene polyamine and with a reaction product of ammonia or amine and an epichlorohydrin, whereby the individual components are not reacted together, but exist as a synergistic mixture.
Japanese Kokai No. 6-108382 discloses a process for improving the wet fastness of dyed cellulosic fibre materials using a polymer which is obtained by the reaction of diallylamine with epihalohydrin, with subsequent polymerisation of the reaction products. The disadvantage of this reaction product is that, during the reaction of diallylamine with epihalohydrin, a considerable part of diallylamine dimers bridged by 2-hydroxy-1,3-propylene may be produced, especially as a result in particular of the relatively high temperatures (20 to 60.degree. C.) and the long reaction time (10 hours in example 1). This leads to a high degree of crosslinking when these compounds are polymerised. Such crosslinking has the effect that, during production or in storage, the aqueous end product becomes very viscous or even solid, and must therefore be precipitated in order to produce a storage-stable commercial product which is in powder form. A further disadvantage of the process described in Kokai No. 6-108382 is that there is a poor yield (82%-88%) of diallylamine polymer, or in other words, a relatively high monomer content. This is particularly undesirable, since diallylamine monomers are toxic.
It is the aim of the present invention to provide polymeric, crosslinkable, but water-soluble dye-fixing agents, which lead to improved fastness of dyeings, in particular cellulosic dyeings, said dye-fixing agents not having a significant proportion of diallylamine monomers.
This problem is solved by the dye-fixing agents according to the invention, which fix dyeings, in particular cellulosic dyeings on the fibre material particularly well, owing to the high reactivity with the textile fibres and the crosslinking to the fibre during application, and therefore pr
REFERENCES:
patent: 2595935 (1952-05-01), Daniel, Jr. et al.
patent: 3700623 (1972-10-01), Keim
patent: 3966684 (1976-06-01), Espy et al.
patent: 4129528 (1978-12-01), Petrovich et al.
patent: 4279794 (1981-07-01), Dumas
patent: 4295931 (1981-10-01), Dumas
patent: 4298715 (1981-11-01), Van Eenam
patent: 4604217 (1986-08-01), Lukach et al.
patent: 4822374 (1989-04-01), Topfl et al.
patent: 4838896 (1989-06-01), Kissling et al.
patent: 4853437 (1989-08-01), Lukach et al.
patent: 4864007 (1989-09-01), Schleusener
patent: 5147411 (1992-09-01), Topfl
Danner Bernard
Heller Jurg
Clariant Finance (BVI) Limited
Einsmann Margaret
Hanf Scott E.
LandOfFree
Textile dye-fixing agents does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Textile dye-fixing agents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Textile dye-fixing agents will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-952232