Aminoplast-anchored ultraviolet light stabilizers

Details Aminoplast-anchored ultraviolet light stabilizers Aminoplast-anchored ultraviolet light stabilizers

C - Chemistry, Metallurgy

08

L

C08L 29/02 (2006.01) C07D 249/20 (2006.01) C07D 251/18 (2006.01) C07D 251/70 (2006.01) C07D 403/14 (2006.01) C07D 487/04 (2006.01) C07F 7/10 (2006.01) C08K 5/16 (2006.01) C08K 5/21 (2006.01) C08K 5/34 (2006.01) C08K 5/3445 (2006.01) C08K 5/3447 (2006.01) C08K 5/3462 (2006.01) C08K 5/3475 (2006.01) C08K 5/3492 (2006.01) C08L 101/00 (2006.01) C09D 201/00 (2006.01)

Patent

CA 2112439

TITLE AMINOPLAST-ANCHORED ULTRAVIOLET LIGHT STABILIZERS ABSTRACT OF THE INVENTION Novel aminoplast anchored UV stabilizers are provided. Compared to unanchored stabilizers, the anchored stabilizers disclosed herein have increased compatibility with coating resins and have reduced volatility due to higher molecular weights resulting from anchoring. A process for preparing the anchored stabilizers by the reaction of unanchored stabilizers with alkoxymethylated aminoplasts in a sulfuric acid medium is also provided. The unanchored stabilizers include 2-(2-hydroxyaryl)benzotriazoles, 2-hydroxy- benzophenones, 2-(2-hydroxyaryl)-4,6-diaryl-1,3,5-tri- azines, salicylic acid derivatives, 2- hydroxyoxanilides, and blocked derivatives thereof as well as mixtures of two or more stabilizers. The aminoplasts include alkoxymethylated derivatives of glycolurils, melamines, and benzoguanamines.

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