| abstract |
The invention provides a stabilizer for high polymers containing as an effective component a mixture comprising at least one member selected from phenolic type compounds of formula (I),n n wherein R, represents a C 1 -C 9 alkyl group, R 2 represents a C 1 -C 3 alkyl group, R 3 represents a hydrogen atom or a methyl group, x represents an integer of 2 to 6, y represents an integer of 1 to 10, and A represents a di- to hexahydric carboxylic acid residue, but it may be simply a single bond when x is 2, and at least one member (I I) selected from the group consisting of sulfur-containing compounds of formula (11-1),n wherein R 4 represents a C 4 -C 20 alkyl group, and those of formula (II-2),n wherein R 5 represents a C 3 -C 18 alkyl group, and R 6 and R 7 are selected independently from a hydrogen atom and C 1 -C 6 alkyl groups. Preferably the weight ratio of phenolic type compound (I) to sulfur-containing compound (II) is 1 to 0.5-15, preferably 1 to 1-10, most preferably 1 to 2-6. The invention also provides high polymers containing the stabilizer. |