| 摘要 |
PURPOSE:The titled composition capable of molding a transparent molded article having high heat resistance free from bloom and bleeding, obtained by blending polyethylene resin with a specific phenolic antioxidant and thio antioxidant. CONSTITUTION:(A) 100pts.wt. polyethylene resin or copolymer resin consisting essentially of ethylene is blended with (B) 1,3,5-tris-(3,5-di-tertiary-butyl-4-hydroxybenzyl)-S-triazine-2,4,6-(1 H,3H,5H)-trione as a phenolic antioxidant and tetrakis-[methylene-(dodecyl)thiopropionate]methane as a thio antioxidant in a weight ratio of the former to the latter of 1:1-6:1 in an amount to give >=2pst. wt. total amounts, to give the aimed composition having 250 deg.C-4hr heat resistance. Heat distortion properties and chemical resistance can be further improved by crosslinking. |
