Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
Reexamination Certificate
2006-02-21
2006-02-21
Davis, Brian (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Four or more ring nitrogens in the bicyclo ring system
C562S518000, C562S567000, C564S508000, C502S522000, C502S523000
Reexamination Certificate
active
07002010
ABSTRACT:
The instant invention discloses a process for the preparation of compounds of the formula I:wherein the general symbols are as defined in claim1, which process comprises reacting a compound of formula II:wherein the general symbols are as defined in claim1, with a compound of the formula III:wherein R5is as defined in claim1. The compounds of the formula II are new and useful as stabilizers for protecting organic materials, in particular synthetic polymers, reprographic materials or coating materials against oxidative, thermal or light-induced degradation.
REFERENCES:
patent: 99/14206 (1999-03-01), None
Braig Adalbert
Fritzsche Katharina
Lazzari Dario
Rossi Mirko
Ruggeri Nazzareno
Ciba Specialty Chemicals Corporation
Davis Brian
Suhadolnik Joseph
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