Copolymerizable photoinitiators

US4922004A · kind A · utility

Assignee

• MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE

Inventors

• Manfred Kohler · Bulle, CH
• Jorg Ohngemach · Reinheim, DE
• Eike Poetsch · Mühltal, DE

Key dates

• Filing date: Sep 29, 1986
• Grant date: May 1, 1990
• Expiry date: Sep 29, 2006

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/031
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to copolymerizable photoinitiators of the general formula I ##STR1## in which R.sup.1 and R.sup.2 are each H, C.sub.1 -C.sub.6 -alkyl or phenyl, PA0 R.sup.3 is H, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkanoyl or the group Z, PA0 R.sup.4 is H, halogen, C.sub.1 -C.sub.12 -alkyl, C.sub.1 -C.sub.12 -alkoxy, C.sub.1 -C.sub.12 -alkylthio PA0 or the group --X[(CH.sub.2 --CH.sub.2 --O).sub.n --Z].sub.m and PA0 X os O, S or N PA0 n is an integer from 0 to 4, PA0 m is the integer 1 for X=O and S or the integer 1 or 2 for X=N, PA0 Z is the group --CO--CR.dbd.CR'R" PA0 with R, R', R" each being H or CH.sub.3, always at least one of the R.sup.3 or R.sup.4 groups containing the group Z.