Patent Number: 7,820,865

Title: Photolatent systems

Abstract: The instant invention relates to new photolatent compounds of the formula I wherein R.sub.1 and R.sub.2 are each independently of the other C.sub.1-C.sub.10alkyl or C.sub.3-C.sub.8cycloalkyl, R.sub.3 is hydrogen or C.sub.1-C.sub.4alkyl, and wherein the photochemically cleaved group R.sub.4OH is selected from the group consisting of fragrances, UV absorbers, anti-microbials, anti-fogging agents and clarifiers; with the proviso that, when R.sub.1 and R.sub.2 are tert-butyl and R.sub.3 is hydrogen, R.sub.4 is not methyl or phenyl. ##STR00001##

Inventors: Fritzsche; Katharina (Weil am Rhein, DE), Fischer; Walter (Reinach, CH), Benkhoff; Johannes (Basel, CH), Powell; Karin (Lorrach, DE), Simon; Dirk (Lorrach-Brombach, DE)

Assignee: Ciba Corporation

International Classification: C07C 49/00 (20060101); A61Q 5/02 (20060101); A61K 8/18 (20060101)

Expiration Date: 2018-10-26 0:00:00