Acid modified natural mineral filler to initialize the beta-nucleation of polypropylene

摘要

The present invention relates to a composition for beta-nucleation of polypropylene, comprising:
(a) a particulate mineral solid support, comprising a compound of a IUPAC Group 2 metal, and
(b) on the surface of the particulate solid support
(b1) a salt of a dicarboxylic acid, wherein the dicarboxylic acid has from 7 to 10 carbon atoms, and
(b2) a dispersing and/or grinding agent.