Non-volatile phenylglyoxalic esters

US6048660A · kind A · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• David G. Leppard · Marly, CH
• Manfred Kohler · Bulle, CH

Key dates

• Filing date: Jan 28, 1998
• Grant date: Apr 11, 2000
• Expiry date: Jan 28, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C69/738
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula I ##STR1## in which R.sub.1 and R.sub.2 independently of one another are, for example, a group of the formula II ##STR2## R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 independently of one another are, for example, hydrogen, C.sub.1 -C.sub.12 alkyl, OR.sub.8, SR.sub.9, NR.sub.10 R.sub.11, halogen or phenyl; R.sub.8, R.sub.9, R.sub.10, R.sub.11 independently of one another are, for example, hydrogen or C.sub.1 -C.sub.12 alkyl; R.sub.12 is, for example, C.sub.1 -C.sub.8 alkyl; R.sub.13 is, for example, C.sub.1 -C.sub.12 alkyl; R.sub.14 is, for example, hydrogen; Y is C.sub.1 -C.sub.12 alkylene, C.sub.4 -C.sub.8 alkenylene, C.sub.4 -C.sub.8 alkynylene or cyclohexylene, or is phenylene or C.sub.4 -C.sub.40 alkylene interrupted one or more times by --O--, --S-- or --NR.sub.15 --, or Y is a group of the formula III, IV, V, VI, VII, VIII, IX, X or XI ##STR3## Y.sub.1 is as defined for Y with the exception of the formula V; R.sub.15 is hydrogen, C.sub.1 -C.sub.12 alkyl or phenyl; and R.sub.16 is hydrogen, CH.sub.2 OH or C.sub.1 -C.sub.4 alkyl; and mixtures of these compounds with further photoinitiators are suitable for photopolymerizing compounds having ethylenic…