MIXTURES OF POLYPROPYLENE WITH RUBBER

摘要

The mixtures of 65 to 96 percent by weight of polypropylene and 4 to 35 percent by weight of butadiene-styrene rubber EPM, or EPDM eventually with the mixture of polyolefins and 0.1 to 10 percent by weight of carbon black of the specific surface of 10 to 1,100 m<2>/g. They are modified by 0.5 to 6 percent by weight, related to carbon black, of dry mass of sulphite liquors from the cellulose production, killed by peroxide, hydrated lime and/or by alkali hydroxide. They are synergetically stabilized by 0.01 to 1 percent by weight of a phenolic antioxidant, which contains in the ortho-position to hydroxyl at least one tertiary butyl group.