Polypropylene composites

摘要

A novel composition comprises a propylene homo- or co- polymer reinforced by a cellulose-containing natural material and containing a graft- carboxylated propylene homo- or co-polymer as an adhesive aid. A composition comprises by weight (A) a propylene homo- or co-polymer (PP) (8-89.8%); (B) a cellulose-containing natural product in powder or fibrous form (10-91.8%); (C) an adhesive aid (0.2-10%) based on a carboxylated PP obtained by solid phase grafting of PP with an alpha ,beta -unsaturated mono- or di-carboxylic acid or anhydride (carboxyl monomer : CM) or with a CM mixture or a mixture containing >=1 CM; and (D) an additive (0-40%) comprising a PP impact modifier, stabilizer, antioxidant or other conventional processing additive.