Ciba-geigy Corporation

Alfred J Neukom

Dieter Reinehr

Martin Jollenbeck

Werner Schmid

Aqueous stable dispersions of a mixture of sparingly soluble UV absorbers, which comprises (a) 5 to 50% by weight of a mixture of a benzotriazole of formula ##STR1## and a 2-hydroxybenzophenone of formula ##STR2## wherein R is halogen, C.sub.1 -C.sub.12 alkyl, lower alkoxy, lower alkoxycarbonyl, cycloalkyl, aryl, C.sub.1 -C.sub.12 alkylaryl or aralkyl, and the rings A and B, each independently of the other, may be further substituted by halogen, hydroxy, lower alkyl, lower alkoxy or lower alkoxycarbonyl,

Aqueous dispersion of sparingly soluble UV absorbers

An agent for proofing keratinous material against attack by pests that feed on keratin, which contains as active compound at least one diphenylurea of the formula ##STR1## and one synthetic pyrethroid and also, if desired, further auxiliaries, and also a process for proofing keratinous material against attack by keratin pests.

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Kienberg, Switzerland

Alfred J Neukom