Polyoxometalate catalysts for the preparation of sterically...

Organic compounds -- part of the class 532-570 series – Organic compounds – Chalcogen in the nitrogen containing substituent

Reexamination Certificate

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C544S055000, C544S097000, C544S113000, C544S242000, C546S187000, C546S189000, C546S191000, C548S146000, C548S215000, C548S300100, C548S542000, C564S300000

Reexamination Certificate

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06841668

ABSTRACT:
Sterically hindered N-substituted aryloxyamines are prepared by the Keggin polyoxometalate or the transition metal substituted polyoxometalate (TMS-POM) catalyzed decomposition of diazonium salts in the presence of a sterically hindered nitoxyl radical. These compounds are useful as thermal and light stabilizers for a variety of organic substrates.

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