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US 4,058,480 AGranted
Non-dusting, readily free-flowing granules of optical brighteners
AssigneeCiba-Geigy Corporation
InventorsFrank Lohmann, Raymond Lugrin, Hanspeter Baumann
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Abstract
New non-dusting, free-flowing readily water-soluble or water-dispersible granules of optical brighteners, and a process for their production are provided.
Drawings
Claims11
Non-dusting, readily free-flowing, easily soluble granules, consisting of a mixture of
- a. 5 to 70 percent by weight of an optical brightener selected from the group consisting of compounds of the formulae ##STR19## or its sodium, potassium, ammonium or amine salts, wherein R.sub.1 ' and R.sub.2 ' independently of one another denote hydrogen or the sulpho group, R.sub.3 ' denotes hydrogen, alkyl or hydroxyalkyl with 1 to 4 carbon atoms and R.sub.4 ' denotes alkyl or hydroxyalkyl with 1 to 4 carbon atoms, ##STR20## or its sodium, potassium, ammonium or amine salts, wherein R.sub.5 ' denotes alkyl with 1 to 4 carbon atoms or phenyl and R.sub.6 ' denotes hydrogen, chlorine or methyl, ##STR21## or its sodium or potassium salts, wherein Y.sub.1 ' denotes hydrogen or chlorine, Y.sub.2 ' denotes hydrogen, chlorine or the sulpho group and Y.sub.3 ' denotes hydrogen or chlorine, ##STR22## wherein X.sub.1 ' denotes hydrogen or chlorine, X.sub.2 ' denotes methyl, phenyl or benzyl, X.sub.3 ' denotes methyl or benzyl, X.sub.4 ' denotes hydrogen, chlorine, methyl, methoxy, methylsulphonyl or ethylsulphonyl and Q.sub.1 denotes chlorine, the methosulphate or the p-toluenesulphonic acid radical,
- b. 0 to 15 percent by weight of an organic acid,
- c. 0 to 15 percent by weight of a complex-forming agent,
- d. 0 to 15 percent by weight of an anionic or nonionic surface-active agent except when said surface-active agent is used as carrier material, and
- e. 0 to 15 percent by weight of a melting point lowering substance, components (a) - (e) being dissolved in a solid melt of
- f. 95 to 30 percent by weight of an organic carrier material which is solid at room temperature and is soluble in water, selected from the group consisting of urea, a urea derivative, an ethylene oxide adduct, a block polymer of polyethylene oxide and polypropylene oxide, a high-molecular weight polyglycol or dimethylsulphone or mixtures thereof.
3 more elements
Dependencies are inferred from the claim text.