Method of stabilizing a polymer from degradation by UV radiation

Claim 1

A method for stabilizing a polymer which is normally subject to degradation by ultraviolet radiation which comprises incorporating into said polymer an ultraviolet stabilizingly effective amount of a polymer prepared by polymerizing, optionally with a comonomer, a compound of the formula (I) ##STR14## wherein R represents C 3 -C.sub.| alkenyloxy, C 3 -C 6 alkenylamino, or di(C 3 -C 6 alkenyl)amino; R 1 represents C 1 -C 8 alkyl, C 1 -C 8 alkoxy, halo, C 1 -C 8 alkylthio, C 3 -C 6 alkenyloxy, amino, C 3 -C 6 alkenylamino, di(C 3 -C 6 alkenyl)amino, the groups ##STR15## C 1 -C 18 alkylamino, di(C 1 -C 18 )alkylamino, morpholino, pyrrolidyl, piperidino, a substituted C 1 -C 18 alkylamino, or a substituted di(C 1 -C 18 )alkylamino, wherein the substituents are selected from amino, cyano, carboxy, alkoxycarbonyl wherein the alkoxy moiety has 1 to 8 carbon atoms, and the group ##STR16## wherein R 2 represents hydrogen, C 1 -C 8 alkyl, or benzyl; R 3 and R 4 independently represent C 1 -C 8 alkyl, benzyl or phenethyl, or together with the carbon to which they are attached form a C 5 -C 10 cycloalkyl; and R 5 represents hydrogen, C 2 -C 3 hydroxylalkyl, C 1 -C 8 alkyl, hydroxyl, or oxyl; R 6 represents hydrogen, C 1 -C 8 alkyl, or the group ##STR17## Y and Y', which may be the same, or different, represent oxy, or ##STR18## X represents C 2 -C 12 alkylene, wherein the alkylene chain may be interrupted by an oxo, thio or ##STR19## radical, C 5 -C 10 cycloalkylene, ##STR20## C 6 -C 12 arylene, or C 8 -C 14 aralkylene; with the proviso that at least one substituent in said compound is, or contains, ##STR21##

Claim 2

A method for stabilizing a polymer which is normally subject to degradation by ultraviolet radiation which comprises incorporating into said polymer an ultraviolet stabilizingly effective amount of a polymer prepared by polymerizing, optionally with a comonomer, a compound of the formula (I) ##STR14## wherein R represents C 3 -C.sub.| alkenyloxy, C 3 -C 6 alkenylamino, or di(C 3 -C 6 alkenyl)amino; R 1 represents C 1 -C 8 alkyl, C 1 -C 8 alkoxy, halo, C 1 -C 8 alkylthio, C 3 -C 6 alkenyloxy, amino, C 3 -C 6 alkenylamino, di(C 3 -C 6 alkenyl)amino, the groups ##STR15## C 1 -C 18 alkylamino, di(C 1 -C 18 )alkylamino, morpholino, pyrrolidyl, piperidino, a substituted C 1 -C 18 alkylamino, or a substituted di(C 1 -C 18 )alkylamino, wherein the substituents are selected from amino, cyano, carboxy, alkoxycarbonyl wherein the alkoxy moiety has 1 to 8 carbon atoms, and the group ##STR16## wherein R 2 represents hydrogen, C 1 -C 8 alkyl, or benzyl; R 3 and R 4 independently represent C 1 -C 8 alkyl, benzyl or phenethyl, or together with the carbon to which they are attached form a C 5 -C 10 cycloalkyl; and R 5 represents hydrogen, C 2 -C 3 hydroxylalkyl, C 1 -C 8 alkyl, hydroxyl, or oxyl; R 6 represents hydrogen, C 1 -C 8 alkyl, or the group ##STR17## Y and Y', which may be the same, or different, represent oxy, or ##STR18## X represents C 2 -C 12 alkylene, wherein the alkylene chain may be interrupted by an oxo, thio or ##STR19## radical, C 5 -C 10 cycloalkylene, ##STR20## C 6 -C 12 arylene, or C 8 -C 14 aralkylene; with the proviso that at least one substituent in said compound is, or contains, ##STR21##