-
公开(公告)号:US06239196B1
公开(公告)日:2001-05-29
申请号:US09074053
申请日:1998-05-07
IPC分类号: C08K320
CPC分类号: C08J3/212 , C08J3/203 , C08J3/2053
摘要: The invention relates to a process for the preparation of a composition to be extruded comprising a polymer and a filler of solid particles comprising a stage of mixing the filler of solid particles with particles or granules of the said polymer, if appropriate in the form of an aqueous suspension. The invention is particularly simple, and the final material is in better mechanical properties than those obtained by direct incorporation of the solid filler in the polymer or copolymer. This improvement is very substantial, in particular with regard to the impact strength of the final material. The invention also relates to a polypropylene-based composition comprising a filler of solid particles, such as kaolin, exhibiting a high flexural modulus and a good impact strength.
摘要翻译: 本发明涉及一种制备待挤出组合物的方法,包括聚合物和固体颗粒填料,其包括将固体颗粒填料与所述聚合物的颗粒或颗粒混合的阶段,如果合适的话,以 水性悬浮液。本发明特别简单,并且与通过将固体填料直接引入聚合物或共聚物中获得的那些相比,最终材料具有更好的机械性能。 这种改进是非常可观的,特别是关于最终材料的冲击强度。 本发明还涉及一种基于聚丙烯的组合物,其包含固体颗粒的填料,例如高岭土,表现出高弯曲模量和良好的冲击强度。