N-acyloxy hindered amine stabilizers

Details N-acyloxy hindered amine stabilizers N-acyloxy hindered amine stabilizers

C - Chemistry, Metallurgy

07

D

400/7074, 260/27

C07D 211/94 (2006.01) C07D 211/36 (2006.01) C07D 401/14 (2006.01) C08K 5/3435 (2006.01) C08K 5/3492 (2006.01) C09D 7/12 (2006.01)

Patent

CA 1339741

Hindered amines based on various 2,2,6,6-tetra-alkylated 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. Some of them are new compounds. The compounds contain the group (see fig. I) wherein R is hydrogen or methyl and R1 is a group (see fig II), wherein D is C1-C18 alkyl, C1-C18 alkoxy, phenyl, phenyl substituted by hydroxy, C1-C4 alkyl or C1-C4 alkoxy, or D is amino or amino mono- or disubstituted by C1-C12 alkyl or phenyl.

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