Photopolymerization initiator comprised of thioxanthones and oxi

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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502167, 502168, 502522, 430919, 430922, 522 26, 522113, G03C 168

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045901457

ABSTRACT:
The initiator composition is effectively used for a photopolymerizable resin composition which comprises a photopolymerizable compound having a double bond for polymerization and a polymer binder and comprises (A) thioxanthone or a substituted thioxanthone and (B) an oxime ester of the formula: ##STR1## wherein R.sub.1 and R.sub.2 may be the same or different and represent each an alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted phenyl, naphthyl, anthryl, pyridyl or quinolyl group or R.sub.1 and R.sub.2 may be bonded together to form a ring, and R.sub.3 represents an alkyl group having 1 to 5 carbon atoms or a substituted or unsubstituted aryl group.

REFERENCES:
patent: 3558309 (1971-01-01), Laridon et al.
patent: 3827957 (1974-08-01), McGinniss
patent: 3857769 (1974-12-01), McGinniss
patent: 3876519 (1975-04-01), McGinniss
patent: 3926643 (1975-12-01), Chang
patent: 4417023 (1983-11-01), Sinka et al.
Leslie Gatechair and Don Wostratzky, "Photoinitiators: An Overview of Mechanisms and Applications", Journal of Radiation Curing, Jul. 1983, pp. 4-18.

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