Photoinitiators
AssigneeGeneral Electric Company
InventorJames V. Crivello
Life of this patent
Estimating the term…
Abstract
Onium salts of Group VIa elements having an MF.sub.6 -anion, where M is selected from P, As and Sb, have been found to be photo active under ultraviolet light. These onium salts can be employed as cationic photoinitiators when used with a variety of organic resins and cyclic organic compounds.
Claims11
A photoinitiator having the formula, ##STR72## where M is selected from P, As and Sb, X is a Group VIa element selected from sulfur and selenium, R is a monovalent organic aromatic radical having from 6-20 carbon atoms Z is a member selected from the class consisting of --S--, ##STR73## O, Se, ##STR74## --CH.sub.2 -- and --C.sub.2 H.sub.4 --, and R.sup.4 is selected from C.sub.(1-8) alkyl and C.sub.(6-13) aryl.
Photoinitiators having the formula,
- [R.sub.3 X].sup.+ [MF.sub.6 ].sup.-,
- where R is selected from aromatic hydrocarbon radicals having from 6-20 carbon atoms and substituted aromatic hydrocarbon radicals having from 6-20 carbon atoms, X is a Group VIa element selected from sulfur, and selenium, and M is selected from P, As and Sb.
Dependencies are inferred from the claim text.