Imation Corporation

Minnesota Mining and Manufacturing Company

Jeanne E Haubrich

Gregory D Cuny

William Donald Ramsden

Stanley C Busman

Tran V Thien

Richard J Ellis

Photochemical acid progenitors in combination with dihydroperimidine squarylium dyes have been found to be particularly effective at generating acid upon irradiation with near-infrared radiation. It has been found that dihydroperimidine squarylium dyes that are particularly useful in this invention have an oxidation potential greater than about 0.5 V relative to SCE as measured in dichloromethane.

Compositions and processes for photogeneration of acid

Composition comprising photochemical acid progenitor and specific

Peroxycarboxylic ester photoinitiators derived from aromatic nitrogen containing heterocyclic carboxylic acids are described. The heterocyclic aromatic ring may contain additional nitrogen atoms, be fused with another aromatic ring system, be substituted with an additional peroxycarboxylic ester group and/or be substituted with an electron group having a Hammett sigma value greater than 0.1. The peroxycarboxylic ester photoinitiators have been found to be useful in photopolymerizable compositions and photosensitive elements.

Peroxycarboxylic ester initiators derived from nitrogen heterocycles

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Maplewood, MN, United States of America

Jeanne E Haubrich