N-[2-hydroxy-3-(2h-benzotriazol-2-yl)benzyl]oxamides

Details N-[2-hydroxy-3-(2h-benzotriazol-2-yl)benzyl]oxamides N-[2-hydroxy-3-(2h-benzotriazol-2-yl)benzyl]oxamides

C - Chemistry, Metallurgy

07

D

C07D 249/20 (2006.01) C07D 401/12 (2006.01) C07D 403/12 (2006.01) C07D 405/00 (2006.01) C07D 413/12 (2006.01) C07F 7/10 (2006.01) C08K 5/3475 (2006.01)

Patent

CA 2099154

ABSTRACT This invention relates to novel W absorbers, their methods of preparation, their use in stabilizing polymers and polymers so stabilized against the degradative effects of W light. The novel compounds are oxamides which are substituted on one or both nitrogens with a 2-hydroxy-3-(2H-benzotriazol-2-yl)benzyl group. The 2-hydroxy-3-(2H-benzotriazol-2-yl)benzyl groups are efficient W absorbing groups and the oxamide group contributes additional light stabilizing, heat stabilizing and metal complexing properties to the compounds. The compounds have low-volatility and are especially useful as W stabilizers for engineering resins processed at high temperatures.

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