摘要:
Compounds of the formula 'wherein R represents C,-C, alkenyloxy, C 3 -C 6 alkenylamino, or di(C 3 -C 6 alkenyl)amino and wherein at least one of the groups contains a 4-piperidinyl moiety, and polymers thereof as light stabilizers for polymers.
摘要:
Polyolefin compositions which are pigmented with titanium dioxide are rendered actinic radiation stabilized by incorporating therein a C 12-20 alkyl ester of 3,5-di-tertabutyl-4-hydroxybenzoic acid.
摘要:
Compounds of the formula wherein R represents C 3 -C 6 alkenyloxy, C 3 -C 6 alkenylamino, or di(C 3 -C 6 ) alkenylamino; 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 e alkenylamino, di (C 3 -C 6 ) alkenylamino, the groups wherein R 2 , R 3 , R 4 , R 5 , and R 6 are as defined below, C 1 -C 18 alkylamino, C 1 -C 18 dialkylamino, morpholino, pyrrolidyl, piperidino, a substituted C 1 -C 18 alkylamino, or a substituted C 1 -C 18 dialkylamino, wherein the substituents are selected from amino, cyano, carboxy, alkoxycarbonyl wherein the alkoxy moiety has 1 to 8 carbon atoms, the groups 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 hydroxyalkyl, C 1 -C 8 alkyl, hydroxyl, or oxyl; R 6 represents hydrogen, C 1 -C 8 alkyl, or
wherein R 2 , R 3 , R 4 , and R 5 are as previously defined; X is oxy, or wherein R 6 is as previously defined. and polymers thereof are disclosed as light stabilizers for polymers.
摘要:
Isopropylidenedicyclohexylene esters of 2,2,6,6-tetramethylpiperidine-4-carboxylic acid of formula: wherein R is hydrogen or alkyl (C 1 -C 8 ); R' is hydrogen, hydroxyl or alkoxy (C,-C 8 ); and R" is the group: and their use as light stabilizers for thermoplastic polymers such as polypropylene.