| 摘要 |
PROBLEM TO BE SOLVED: To provide an antioxidant eutectic which can improve the dispersibility of an antioxidant having a high melting temp. (low volatility and highly persistent stabilization effect) into a polyolefin resin. SOLUTION: This antioxidant eutectic is prepd. by heat-mixing 20 to 80wt.% antioxidant A having a melting temp. of 140 to 250 deg.C with 80 to 20wt.% antioxidant B, contg. a long-chain alkyl group, having a melting temp. of 40 to 110 deg.C at a temp. of the melting temp. of the antioxidant A or above. The polyolefin resin compsn. is prepd. by adding and heat-kneading 0.01 to 5 pts.wt. eutectic with 100 pts.wt. polyolefin resin. |
