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ASTM D4101是聚丙烯注塑和擠出材料的標準規范：

ASTM D4101規定了聚丙烯材料的注塑成型和擠出。 聚合物包括均聚物、共聚物及復合彈性體(加或不加聚異丁烯橡膠、乙丙橡膠、丁基橡膠等沖擊改性劑)，還有色素、穩定劑、潤滑劑或增強劑。

本規范允許使用可循環，再生，并重新研磨的聚丙烯材料，但前提是：(1)滿足本規范中所列的規定;(2)該材料還沒有以任何方式修改，改變其符合食品接觸法規或類似的要求。

ASTM D4101英文介紹(節選)

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