Peroxycarboxylic ester photoinitiators derived from nitrogen heterocycles

A peroxycarboxylic ester photoinitiator has the formula R1-C(C=O)-O-O-R2 (I); R1 = alkyl; and R2 = an aromatic heterocyclic gp. contg. a first sp2 hybridised N-atom having 3 valence bonds comprising a single and a double bond forming art of the ring and one or more additional components selected fro...

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Bibliographische Detailangaben
1. Verfasser:	HAUBRICH, JEANNE E
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS SPECIALLY ADAPTED THEREFOR CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON ELECTROGRAPHY HETEROCYCLIC COMPOUNDS HOLOGRAPHY MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MATERIALS THEREFOR METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A peroxycarboxylic ester photoinitiator has the formula R1-C(C=O)-O-O-R2 (I); R1 = alkyl; and R2 = an aromatic heterocyclic gp. contg. a first sp2 hybridised N-atom having 3 valence bonds comprising a single and a double bond forming art of the ring and one or more additional components selected from: (i) an additional sp2 hybridised N-atom having 3 valence bonds comprising a single and a double bond in conjugation with the first sp2 hybridised N-atom; (ii) an alkyl peroxycarboxylic ester gp.; and (iii) an electron-withdrawing gp. of Hammett sigma value greater than 0.1. Also claimed is a peroxycarboxylic ester photoinitiator of formula (I) in which R2 comprises an aromatic heterocyclic ring as above selected from pyrazine, pyrimidine, pyradazine, triazine, imidazole, furazan, oxazole and thiazole, to which is fused at least one aromatic structure.