Patent ID: 6797751
Filing Date: 2004-09-28
Classification: C08K,Y10T

Abstract:
A method of protecting contents against the deleterious effects of ultraviolet radiation,which method comprises storing the contents in a clear or lightly colored rigid plastic container, which container comprises an effective stabilizing amount of one or more compounds selected from the group consisting of the durable hydroxyphenyl benzotriazole UV absorbers, wherein said benzotriazole UV absorbers are of formula (I) whereinG1 is hydrogen, G2 is CF3â€”, E1 is phenylalkyl of 7 to 15 carbon atoms, phenyl, or said phenyl or said phenylalkyl substituted on the phenyl ring by 1 to 4 alkyl of 1 to 4 carbon atoms, E2 is straight or branched alkyl chain of 1 to 24 carbon atoms, straight or branched chain alkenyl of 2 to 18 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenylalkyl of 7 to 15 carbon atoms, phenyl, or said phenyl or said phenylalkyl substituted on the phenyl ring by 1 to 3 alkyl of 1 to 4 carbon atoms; or E2 is said alkyl of 1 to 24 carbon atoms or said alkenyl of 2 to 18 carbon atoms substituted by one or more â€”OH, â€”OCOE11, â€”NH2 or â€”NHCOE11, or mixtures thereof, or said alkyl or said alkenyl interrupted by one or more â€”Oâ€” and which can be unsubstituted or substituted by one or more â€”OH, or is a compound of formula (I) wherein, G1 is hydrogen, G2 is CF3â€”, E1 is hydrogen, straight or branched alkyl of 4 to 24 carbon atoms or phenylalkyl of 7 to 15 carbon atoms, and E2 is straight or branched alkyl chain of 1 to 24 carbon atoms, straight or branched chain alkenyl of 2 to 18 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenylalkyl of 7 to 15 carbon atoms, phenyl, or said phenyl or said phenylalkyl substituted on the phenyl ring by 1 to 3 alkyl of 1 to 4 carbon atoms; or E2 is said alkyl of 1 to 24 carbon atoms or said alkenyl of 2 to 18 carbon atoms substituted by one or more â€”OH, â€”OCOE11, â€”NH2 or â€”NHCOE11, or mixtures thereof, or said alkyl or said alkenyl interrupted by one or more â€”Oâ€” and which can be unsubstituted or substituted by one or more â€”OH.