Flame retarding compounds

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C546S242000

Reexamination Certificate

active

06967252

ABSTRACT:
Novel flame retarding compounds that comprise at least one sterically hindered nitroxyl, hydroxylamine or hydrocarbyloxyamine moiety and at least one conventional organohalogen or organophosphorus flame retardant moiety, represented bywhereHA is independently of each other a sterically hindered nitroxyl, sterically hindered hydroxylamine or sterically hindered hydrocarbyloxyamine moiety,L is independently of each other a direct bond or chemical linking group,FRM is independently of each other an organohalogen or an organophosphorus flame reatardant moiety, andx, y and z are each independently greater than or equal to 1,are especially effective towards providing flame retardancy to organic polymer substrates.

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