ASTM D4101是聚丙烯注塑和挤出材料的标准规范：

ASTM D4101规定了聚丙烯材料的注塑成型和挤出。 聚合物包括均聚物、共聚物及复合弹性体(加或不加聚异丁烯橡胶、乙丙橡胶、丁基橡胶等冲击改性剂)，还有色素、稳定剂、润滑剂或增强剂。

本规范允许使用可循环，再生，并重新研磨的聚丙烯材料，但前提是：(1)满足本规范中所列的规定;(2)该材料还没有以任何方式修改，改变其符合食品接触法规或类似的要求。

ASTM D4101英文介绍(节选)

This specification covers polypropylene materials, suitable for injection molding and extrusion, that include unreinforced polypropylene with natural color only, unfilled and unreinforced polypropylene, calcium carbonate filled polypropylene, glass reinforced polypropylene, polypropylene copolymers, and talc filled polypropylene. Polymers consist of homopolymer, copolymers, and elastomer compounded with or without the addition of impact modifiers (ethylene-propylene rubber, polyisobutylene rubbe