| abstract |
The invention provides phenolic type compounds represented by the general formula (I),n wherein n represents an integer of 1 to 4, and the A's are selected from groups of the formulan In which R, is a C 1 -C 3 alkyl group, a stabilizer for synthetic resins containing said compound as an active ingredient and stabilized synthetic resins containing said stabilizer. The invention also provides a stabilizer for synthetic resins containing as an active ingredient a mixture comprising at least one phenolic type compound as above and at least one sulfur-containing compound selected from those of formulae (II-I) and (11-2),n wherein R 2 represents a C 4- C 20 alkyl group, andn wherein R 3 represents a C 3 -C 18 alkyl group and R 4 and R 5 are selected independently from hydrogen atom and C 1 -C 6 alkyl groups. Synthetic resin, e.g. polyolefin and preferably polypropylene, may contain stabilizers according to the invention. |