268 113 preferred hindered amines include 4 stearoyloxy 2 2 6 6 tetramethylpiperidine and dodecyl n 2 2 6 6 tetramethyl 4 piperidinyl succinate sold under the trade names cyasorb u00ae uv 3853 and cyasorb u00ae uv 3581 from cytec di 2 2 6 6 tetramethylpiperidin 4 yl sebacate and di 1 2 2 6 6 pentamethylpiperidin 4 yl sebacate sold as songlight u00ae 7700 and songlight u00ae 2920lq from songwon and bis 1 octyloxy 2 2 6 tetramethyl 4 piperidyl sebacate sold as tinuvin u00ae 123 by ciba another useful type of antioxidant for preferred inclusion in the compositions of the invention are one or more liquid partially sulfurized phenolic compounds such as are prepared by reacting sulfur monochloride with a liquid mixture of phenols u2014 at least about 50 weight percent of which mixture of phenols is composed of one or more reactive hindered phenols u2014 in proportions to provide from about 0 3 to about 0 7 gram atoms of sulfur monochloride per mole of reactive hindered phenol so as to produce a liquid product typical phenol mixtures useful in making such liquid product compositions include a mixture containing by weight about 75 of 2 6 di tert butylphenol about 10 of 2 tert butylphenol about 13 of 2 4 6 tri tert butylphenol and about 2 of 2 4 di tert butylphenol the reaction is exothermic and thus is preferably kept within.