Patent Number: 6,441,244

Title: Benzophenones and the use thereof as photoinitiators

Abstract: The invention relates to new compounds of the formula (I) ##STR1## in which R is phenyl, C.sub.1-4 alkyl-, C.sub.1-4 alkoxy- or halogen-substituted phenyl, naphthyl or an aromatic ring containing heteroatoms; X is O or S; R.sub.1 and R.sub.2 are each a methyl radical or R.sub.1 and R.sub.2 together are a C.sub.4-8 alkylene radical; Y is hydroxyl, C.sub.1-12 alkoxy, C.sub.1-4 alkylamino, di-C.sub.1-4 alkylamino or a piperidine or morpholine ring that is attached by its nitrogen atom; to a process for preparing them and to their use as photoinitiators and/or photosensitizers.

Inventors: Avar; Lajos (Biel-Benken, CH), Bar; Rene (Basel, CH), Sanahuja; Victor (Therwil, CH)

Assignee: Clariant Finance (BVI) Limited

International Classification: C07C 323/22 (20060101); C07C 323/00 (20060101); C07C 49/84 (20060101); C07C 45/63 (20060101); C07C 45/64 (20060101); C07C 49/00 (20060101); C07C 45/46 (20060101); C07C 45/00 (20060101); C07D 333/00 (20060101); C07D 333/62 (20060101); C08F 2/46 (20060101); C08F 2/50 (20060101); G03F 7/031 (20060101); C07C 049/115 (); C07C 049/215 (); C07C 049/76 (); C07C 045/00 (); C07C 211/00 (); C07D 265/30 ()

Expiration Date: 08/27/2019