公开(公告)号：CA3148014A1

公开(公告)日：2021-03-18

申请号：CA3148014

申请日：2020-09-07

Applicant: BASF SE

Inventor： GFROERER THOMAS GEORG ,  SATHYANARAYANA SHYAM SUNDAR ,  GEOERG YEAN YIK ,  PUCH FLORIAN ,  O'SULLIVAN JENNIFER M ,  HERBST HEINZ

IPC: B29B9/08 ,  B29B9/12 ,  B29B9/16 ,  C08J3/22 ,  C08K5/526 ,  C08L23/00 ,  C08L23/16 ,  C08L25/06

Abstract: Method for manufacturing a pellet in a pellet mill, comprising the steps of (a) pressing a mixture for compaction by a roller through a nozzle to obtain a strand, and (b) comminuting the strand to obtain the pellet, wherein the mixture for compaction comprises (i) 87 to 97 wt.-% of a polymer stabilizer, which is tris(2,4-ditert- butylphenyl) phosphite (CAS-No. 31570-04-4), and (ii) 3 to 13 wt- % of a processing aid, which is a propylene-ethylene copolymer and which possesses a melting enthalpy below 100 J/g at 101.32 kPa. The pellet is useful for a dust-free handling of its polymer stabilizer at a manufacturing of the stabilized polymer. Furthermore, a method for stabilizing a polymer, which is a polyolefin, a polystyrene or a mixture thereof, is also disclosed, which comprises the dosing of the pellet to the polymer.