Prime Polymer Co., Ltd. is a Japan-based manufacturer of polyolefin resins, established as a joint venture between Mitsui Chemicals, Inc. and Idemitsu Kosan Co., Ltd. The company develops and produces polypropylene (PP) and polyethylene (PE) materials.
Its portfolio includes homopolymer and copolymer PP, high-density and linear low-density PE, and other specialty grades used in packaging films, rigid containers, automotive components, appliances, and industrial products. Prime Polymer conducts research and process development for performance polyolefins and supplies materials to the domestic Japanese market as well as export customers.
