O-carbonyl N-hydroxy hindered amine stabilizers

Details O-carbonyl N-hydroxy hindered amine stabilizers O-carbonyl N-hydroxy hindered amine stabilizers

1993-05-28

1994-04-05

Rollins, John W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546189, 546225, 546262, 540524, 540525, 544194, 544207, 544231, 544357, 544360, C07D21136, C07D21130, C07D40100, C07D40300

Patent

active

053006470

ABSTRACT:
Hindered amines based on various 2,2,6,6-tetraalkylated nitrogen-containing heterocyclic moieties wherein the hindered nitrogen atom on the ring is substituted with O-acyl, O-carbamoyl or O-carbonate substituents and the 4-position of the ring is substituted with a variety of groups, are effective as light stabilizers in diverse substrate systems.

REFERENCES:
patent: 4465757 (1984-08-01), Leppard et al.
patent: 4691015 (1987-10-01), Behrens
patent: 5204473 (1993-04-01), Winter et al.
Kurumada J Polymer Sci 22:277-81, 1984.

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