STABILIZER MIXTURE FOR THERMOPLASTIC MOLDING MATERIAL, THERMOPLASTIC MOLDING MATERIAL, STABILIZING METHOD, STABILIZED MOLDING MATERIAL AND MOLDED PRODUCT

摘要

PURPOSE: To improve an initial and final stability of a thermoplastic molding material by containing a primary stabilizer and a specified auxiliary stabilizer. ;CONSTITUTION: Ester thiosalicylate and substituted phenol are substituted by basic catalytic action of phosphor trihalide to produce an auxiliary stabilizer B comprising a compound of the formula (R¹ and R³ are H, halogen, straight or branched chain C₂₀ or less alkyl, alkenyl, acyl, alkoxy, or aryl that may be substituted; R² is C₂₀ or less straight or branched chain alkyl, alkenyl, or aryl that may be substituted; n is from 1 to 3). Subsequently, 100 pts.wt. of a thermoplastic polymer (e.g. PVC), is blended with (A) 0.05 to 5 pts.wt. of primary stabilizer comprising a Ca, Ba, or Zn salt of fatty acid salt and 0.02 to 2 pts.wt. of component B.;COPYRIGHT: (C)1990,JPO