JPS5861196A - Bleaching agent composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to optical bleach compositions containing a cationic optical bleach, an anionic surfactant and, if appropriate, other additives. The product can be in solid or liquid form.

These bleach compositions can be prepared, for example, by mixing in an aqueous medium at least ls of a cationic optical bleach, at least one anionic surfactant and if appropriate other additives; It is obtained by drying this mixture.

Numerous cationic optical bleaches that can be used according to the invention are described in the literature. The composition preferably has the following general formula % where X means a triazolyl group, Y means a coumarinyl or benzofuranyl group, and Z is a heteroaromatic group quaternized at the N atom position. and aa means an anion.

Among this group, those in which (roxy or aryl) Z=triazolyl group with a quaternary nitrogen atom;
For example, and in which X has the above meaning and Z=an imidazolyl group having a quaternary nitrogen atom,
For example, preferred.

Particularly preferred bleaching agents are described in the following literature sources: German Patent Application No. 4821.116;
No. 1.670.999.

Possible anionic surfactants include those described in German Patent Application No. 4257.945. The following may be mentioned by way of example: alkylene oxide ducts containing awlphatgd radicals, partially esterified polyhydric alcohols containing sulfate radicals, alkyl sulfonates,
Sodium dialkylsulfosuccinates, alkylbenzenesulfonates, condensation products formed from naphthalenesulfonic acid or ditolylethersulfonic acid toformaldehyde, lignosulfonates, and hydroxylignosulfonates, or cresol, 2-natutanol-6-sulfonic acid, formaldehyde and Condensation products from sulfuric acid. Surfactants having dispersant properties are preferred, such as the lignin derivatives and formaldehyde condensation products mentioned above.

Anionic surfactants can be used in the free acid form or in the form of their water-soluble salts.

Examples of other common additives are NaCt or Na, SO.

Inorganic salts such as salts of organic acids, such as CH, COONa.

and easily water-soluble organic compounds such as epsilon-caglolactam, saccharomylate.

Cationic light in preferred liquid aqueous compositions! # The concentration of bleach should be in the range of 1-10 inches, pronation, the concentration of anionic surfactant should be in the range of 3-40 inches, and the concentration of other additives should be in the range of 3-40 inches as well. Within the range.

The bleach composition according to the present invention is a cationic optical bleaching agent.
is prepared by homogenizing in an aqueous medium with an anionic surfactant and, if appropriate, other additives, and dissolving the mixture, if appropriate by heating.

The solution can be strained, if necessary, to separate out any undissolved components or contaminants. Homogenization is carried out by known methods, for example using high speed stirrers, rotor-stator mills, dissolvers or similar equipment.

If a solid composition is desired, the liquid composition can be dried using known drying methods.

The bleach composition according to the invention is useful for preparing polyacrylonitrile fibers by the wicking method, preferably with bleaching of the fiber material carried out in the same bath, for example with sodium chloride, to prepare a dye liquor for whitening. I'm extremely concerned about this.

Example 1 Optical bleaching of the formula $16f is dissolved with stirring at 70° C. into a solution of condensation product 401 formed from ditolyl ether, formaldehyde and ms in 665f of water. Even during cooling and lowering in the chamber St, the solution is mixed in.

Optics that are slightly α07! Compared to the solubility of the white-side active compound in water, it is possible to obtain a threshold that is 50 times stronger by using the above composition.

Example 2 Bleach 11117f of Example 1 was combined with anionic surfactant 88F of Example 1 and CHpOONa 1f.
Dissolve in 5 of water [7] and then spray the mixture
Drying yields a powder with a residual moisture content of 4 g.

This composition produces a bright greenish bleaching effect on polyacrylonitrile ## miscellaneous when used at 0.2-2% S, progeny and liquid ratios of 1:10 to 1:40.

Example 3 The optical bleach 6F represented by
Homogenize by stirring into 50F water and spray the mixture with IJ! s Dry to obtain a powder with a residual moisture content of 5%.

This powder 30f'1rpH4 (acetic acid) in boiling water 70F [
Melt it. This filtrate is maintained even when it is cooled and lowered in Muromachi 2 trenches.

By using the present composition, compared to the low solubility of optical bleach in water of only 0.030'1,
It is possible to obtain 0 times darker # degree.

The above composition has a concentration of 1:02-2 and a liquid ratio of 1:
When used at 10 to 1:40, it produces a bright bluish stain on the foliaacrylonitrile twill fibers.

The same effect can be obtained by replacing the optical bleaching agent contained in the above-mentioned parabolite with the optical bleaching agent according to Example 1.

%W Output 111 → Person Beyer Fist Akchengusel Shaft

Claims (1)

[Claims] 1. Cationic optical bleach, anionic surfactant,
and, if appropriate, other conventional additives. 2.9 Contains as a surfactant a lignosulfonate, a hydroxylignosulfonate or a condensation product formed from naphthalenesulfonic acid or hasitlylethersulfonic acid and formaldehyde,
A bleach composition according to claim 1.