Hydroxy-substituted n-alkoxy hindered amines

Details Hydroxy-substituted n-alkoxy hindered amines Hydroxy-substituted n-alkoxy hindered amines

C - Chemistry, Metallurgy

07

D

C07D 211/94 (2006.01) C07D 207/46 (2006.01) C07D 211/98 (2006.01) C07D 401/14 (2006.01) C07D 405/14 (2006.01) C07D 491/113 (2006.01) C07D 491/22 (2006.01) C07F 7/10 (2006.01) C08K 5/3435 (2006.01) C08K 5/3492 (2006.01) C08K 5/357 (2006.01) C08K 5/544 (2006.01) C09D 7/12 (2006.01) C09D 11/02 (2006.01) G03C 1/34 (2006.01)

Patent

CA 2299754

Hindered amines substituted on the N-atom with an -O-E-OH moiety are particularly effective in stabilizing polyolefin and automotive coating compositions against the deleterious effects of oxidative, thermal and actinic radiation where the presence of the OH group on the compounds adds important properties not attainable by the use of normal -O-E moieties. They are conveniently prepared by reacting the corresponding N-oxyl compound with an alcohol in the presence of a peroxide or an organic hydroperoxide and a catalytic amount of a metal salt or metal-ligand complex.

Les amines encombrées à substitution sur l'atome N par un groupement -O-E-OH sont particulièrement efficaces dans la stabilisation de la polyoléfine et des compositions de revêtement automobile contre les effets nocifs du rayonnement oxidatif, thermique et actinique, dans lequel la présence du groupe OH sur les composés ajoute des propriétés importantes non atteignables par l'utilisation du groupement normal -O-E. Ces amines sont préparés de manière pratique par la réaction du composé N-oxyl correspondant avec de l'alcool dans la présence d'un peroxyde ou d'un hydroperoxyde organisque et une quantité catalytique d'un sel métallique ou d'un comple métal-ligand.

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