Cleaning compositions for solid surfaces – auxiliary compositions – Auxiliary compositions for cleaning – or processes of preparing – Textile softening or antistatic composition
Patent
1999-04-21
2000-02-15
Gupta, Yogendra
Cleaning compositions for solid surfaces, auxiliary compositions
Auxiliary compositions for cleaning, or processes of preparing
Textile softening or antistatic composition
C11D 330, C11D 1835
Patent
active
060253223
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to the use of polycationic condensates as color transfer inhibiting and color release reducing additive to detergents and fabric conditioners, and to detergents and fabric conditioners which comprise polycationic condensates.
FIELD OF THE INVENTION
When colored textiles are washed, the dye is partly released from the colored textiles and transferred from the wash liquor to other fabrics. If, for example, white laundry is washed together with colored textiles, the white laundry becomes soiled. In order to prevent transfer of the released textile dye from the wash liquor to the laundry, color detergents which contain polymeric color transfer inhibitors have been developed. The latter comprise, for example, homo- and copolymers of vinylpyrrolidone and vinylimidazole, cf. DE-B-22 32 353 and DE-A-28 14 287.
EP-A-0 462 806 discloses the use of cationic dye fixatives in after-wash treatment baths together with fabric softeners. The after-treatment of the laundry takes place in usual domestic washing machines at temperatures below 40.degree. C. The dye fixatives can, according to the statements in the application, also be employed in nonionic detergents. The cationic fixatives slow down the release of the dye from the colored textiles during the treatment process.
EP-A-0209787 discloses a method for the after-treatment of colored cellulosic fiber materials which have been dyed with reactive dyes, where the colored materials undergo after-treatment, either batchwise in the dyeing apparatus or continuously in backwashers for tops or in padding mangles or open-width washers for sheet material, with an aqueous liquor of benzylated condensates from piperazine (derivatives) and epichlorohydrin to remove unfixed hydrolyzed reactive dyes from the colored material.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide more effective compositions for suppressing release and transfer of dyes to other textiles during the washing and during the after-treatment of colored textiles.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
We have found that this objective is achieved by the use of polycationic condensates obtainable by condensing group, 1,4-dialkylpiperazines having 1 to 25 carbon atoms in the alkyl group, 1,4-bis(3-aminopropyl)piperazine, 1-(2-aminoethyl)piperazine, 1-(2-hydroxyalkyl)piperazines having 2 to 25 carbon atoms in the alkyl group, imidazole, C.sub.1 -C.sub.25 -alkylimidazoles or mixtures of said compounds with quaternization of the condensates with C.sub.4 -C.sub.25 -alkylating agents acidic catalysts and quaternizing the condensates with C.sub.4 -C.sub.25 -alkylating agents detergents and fabric conditioners.
The condensates preferably used for this purpose are obtainable by condensing imidazole, C.sub.1 -C.sub.3 -C-alkylimidazoles or mixtures of said compounds with 1,4-dichlorobutane, epichlorohydrin, bisepoxybutane or mixtures of said compounds and, C.sub.8 -C.sub.22 -epoxides and quaternizing the condensates with C.sub.6 -C.sub.22 -alkyl halides or C.sub.8 -C.sub.22 -epoxides.
The molecular weight of the condensates is, for example, from 500 to 100,000, preferably 1,000 to 50,000. Particularly preferred cationic condensates have molecular weights in the range from 1,500 to 25,000.
The degree of quaternization of the amino groups in the condensates is, for example, at least 25%, preferably at least 50%. The best results are obtained with cationic condensates in which the degree of quaternization of the amino groups is from 70 to 100%. The condensates described above are disclosed in EP-B 0 209 787 and EP-A-0 223 064 as after-treatment agents for improving the wet fastness of colorings and printings with reactive dyes. The polycationic condensates particularly preferably employed for the applications according to the invention are those obtainable by reacting catalysts particular C.sub.6 -C.sub.12 -alkyl halides such as, in particular, benzyl chloride.
The polycationic condensates are soluble in water or easily dispersible
REFERENCES:
patent: 3549546 (1970-12-01), Moore
patent: 4094796 (1978-06-01), Schwarz
patent: 4704132 (1987-11-01), Fikentscher et al.
patent: 5128053 (1992-07-01), Gummo et al.
Boeckh Dieter
Jager Hans-Ulrich
Lux Jurgen Alfred
BASF - Aktiengesellschaft
Gupta Yogendra
Hardee John R.
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