Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
Patent
1991-09-30
1993-02-16
Ford, John M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Four or more ring nitrogens in the bicyclo ring system
544209, 544212, 544113, 544198, 540599, 540525, C07D40112, C07D40114
Patent
active
051872757
ABSTRACT:
Compounds of formula I ##STR1## wherein R.sub.1 is hydrogen, alkyl or alkoxy, --A.sub.1 --R.sub.2 --N(R.sub.3)-- and --X.sub.1 --(X.sub.2 --X.sub.3).sub.m -- are selected linking groups, Y.sub.1 and Y.sub.2 are selected terminal moieties and n is 1 to 50, are effective light, heat and oxidation stabilizers for a variety of organic materials.
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Borzatta Valerio
Scrima Roberto
Vignali Graziano
Ciba-Geigy Corporation
Ford John M.
Hall Luther A. R.
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