STABILIZATION MIXTURE AND USE THEREOF FOR PRODUCING POLYPROPYLENE COMPOSITION, PROCESS FOR PRODUCING SAID COMPOSITION, ARTICLE MADE THEREOF, AND USE OF A PIPE PRODUCED THEREFROM

摘要

The invention provides a stabilization mixture comprising a beta-nucleating agent, an acid scavenger and a white pigment. The use of said mixture for the production of a polypropylene composition having a time before failure within an oven test at 130°C of at least 1000 hours after storage in chlorinated water with a chlorine content of 8 ppm and a temperature of 90°C for 5 weeks; and process for producing said composition. An article made of the polypropylene composition and the use of a pipe produced therefrom.