Diaryliodonium salt catalysts made from iodotoluene and a method for preparing them

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United States of America Patent

PATENT NO 6632960
APP PUB NO 20020193619A1
SERIAL NO

10177549

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Abstract

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Diaryliodonium salts are disclosed, as well as a method for preparing them, in which one of the aryl groups bonded to the positively-charged iodine ion contains a methyl substituent, and the other one contains a hydroxyl-substituted alkoxy group. The salts are synthesized from (o, m, or p)-iodotoluene, as opposed to iodobenzene, and therefore do not pose a carcinogenic risk. In addition, the present salts are unexpectedly more soluble in most organic solvents, as well as in nonpolar monomers, than the corresponding benzene catalysts. The salts are useful as cationic photoinitiators, cationic thermal initiators (often combined with a cocatalyst, e.g. copper), and as starting materials in the synthesis of urethane-containing iodonium salts.

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Patent Owner(s)

Patent OwnerAddress
POLYSET COMPANY INC65 HUDSON AVENUE PO BOX 111 MECHANICVILLE NY 12118

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Crivello, James V Clifton Park, NY 114 1963
Feldmann-Krane, Georg Mulheim, DE 7 124
Oestreich, Sascha Essen, DE 20 127

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