Polyolefin composition containing ultrafine sorbitol and xylitol acetals

Abstract From the Canadian patent

A process for incorporating a clarifying agent into a semi-crystalline polyolefin, resin is provided whereby a clarifying agent selected from compounds having the, formula:, wherein p is 0 or 1, m and n are independently 0-3 and R is, at each , occurrence, independently selected from C1-8 alkyl C1-4 alkoxy, hydroxy, halogen, C1-6 , alkylthio C1-6, alkylsulfoxy and a 4 or 5 membered alkyl group forming a carbocyclic ring with adjacent, carbon atoms of the unsaturated parent ring and wherein the clarifying agent , is in the form of a powder characterized by a d97 of 30 microns or less and a mean , particle size, of 15 microns or less is blended with the polyolefin resin, at a temperature …