Ciba-geigy Corporation

Franz Gunter

Kurt Burdeska

Werner Fringeli

Suresh C Agarwal

Burkhart Lange

Heinz Abel

Rosemarie Topfl

Claude Eckhardt

There is disclosed a process for the preparation of 2-(2',4'-dihydroxyphenyl)-4,6-diaryl-s-triazines of formula (1) as indicated in claim 1, which process comprises reacting, in a first step, a compound of formula (4) as indicated in claim 1, with the aid of a Lewis acid, in the presence of xylene or toluene, with a substituted benzene of formula (5) as indicated in claim 1, and, in a second step, reacting the resultant compound of formula (2) as indicated in claim 1, in the presence of toluene or xylene, with chlorine or sulfuryl chloride, to give the compound of formula (3) as indicated in claim 1, and, in a third step, reacting the resultant compound with 1,3-dihydroxybenzene, with the aid of a Lewis acid, to give the compound of formula (1), in the presence of toluene, xylene or a mixture of xylene isomers.

2-methyl-thio-4,6-diaryl-triazines

Process for the preparation of

An assistant combination for use as textile finishing agent, especially in a process for aftertreating wool dyeings, which comprises

Assistant combination and use thereof as wool textile finishing agent

Compounds of the formula ##STR1## in which R.sub.1 is long-chain alkyl, R.sub.2 and R.sub.3 are each lower alkyl and X.crclbar. is an anion, are prepared by quaternizing amines of the formula R.sub.1 R.sub.2 R.sub.3 N with ethylene oxide in the presence of acid. This gives the quaternary compounds in virtually quantitative yield. The compounds are particularly suitable for use in hair cosmetics.

Process for preparing quaternary ammonium salts

The invention relates to the production of washing powders of stabilized or enhanced appearance which contain a fluorescent whitening agent of the formula ##STR1## or of the formula ##STR2## wherein R.sub.1 is hydrogen or chlorine, and M is hydrogen, an alkali metal or ammonium ion. The stabilizing or enhancement of the appearance is effected by first dissolving or dispersing the fluorescent whitening agent in a mixture of water and a polyvinyl alcohol or polyvinyl pyrrolidone which is soluble or is able to swell in water, adding this solution or dispersion to the washing powder slurry and drying the slurry. The solution or dispersion can also be subsequently sprayed onto the dried residual washing powder. The appearance can be further enhanced by employing a polyethylene glycol, a surfactant containing ethyleneoxy and/or propyleneoxy groups, and/or a cellulose ether, in addition to the polymer in the solution or dispersion. The solution or dispersion comprising fluorescent whitening agent and polymer can also alternatively be dried, preferably by spray drying, to produce a preparation which, after it has been suspended in water, can also be added to the washing powder slurry. The slurry is then dried, preferably by spray drying.

Process for the production of washing powders of stabilized or enhanced

The invention relates to the production of washing powders of stabilized or enhanced appearance which contain a fluorescent whitening agent of the formula ##STR1## wherein X.sub.1 is hydrogen, chlorine, bromine, alkyl or alkoxy, X.sub.2 is hydrogen or alkyl and M is hydrogen, an alkali metal or ammonium ion. The stabilizing or enhancement of the appearance is effected by first dissolving or dispersing the fluorescent whitening agent in a mixture of water and a polyvinyl alcohol or polyvinyl pyrrolidone which is soluble or is able to swell in water, adding this solution or dispersion to the washing powder slurry and drying the slurry. The solution or dispersion can also be subsequently sprayed onto the dried residual washing powder. The appearance can be further enhanced by employing a polyethylene glycol, a surfactant containing ethyleneoxy and/or propyleneoxy groups, and/or a cellulose ether, in addition to the polymer in the solution or dispersion. The solution or dispersion comprising fluorescent whitening agent and polymer can also alternatively be dried, preferably by spray drying, to produce a preparation which, after it has been suspended in water, can also be added to the washing powder slurry. The slurry is then dried, preferably by spray drying.

A brightening composition consisting of a mixture of brighteners and 0 to 99.995% by weight of a commercially available washing agent, said mixture containing at least two brighteners of the formula ##STR1## in which A and B independently of one another denote a radical of the formula ##STR2## in which M represents hydrogen or an ammonium, alkaline earth metal, amine salt or alkali metal ion, as well as a process for brightening organic textiles are disclosed.

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Riehen, Switzerland

Franz Gunter