Ụdị polypropylene.

Mkpụrụ ndụ Polypropylene nwere otu methyl, nke enwere ike kewaa n'ime isotactic polypropylene, atactic polypropylene na syndiotactic polypropylene dịka nhazi nke otu methyl si dị. Mgbe a haziri otu methyl n'otu akụkụ nke isi yinye, a na-akpọ ya isotactic polypropylene; ọ bụrụ na a kesaa otu methyl n'ụzọ na-enweghị usoro n'akụkụ abụọ nke isi yinye, a na-akpọ ya atactic polypropylene; mgbe a haziri otu methyl n'otu aka n'akụkụ abụọ nke isi yinye, a na-akpọ ya syndiotactic. polypropylene. Na mmepụta nke polypropylene resin n'ozuzu, ọdịnaya nke usoro isotactic (a na-akpọ isotacticity) dị ihe dị ka 95%, ihe fọdụrụ bụ atactic ma ọ bụ syndiotactic polypropylene. A na-ekewa resin polypropylene nke a na-emepụta ugbu a na China dịka ndeksi agbaze na ihe mgbakwunye agbakwunyere.

Atactic polypropylene bụ ihe si na mmepụta nke isotactic polypropylene pụta. A na-emepụta Atactic polypropylene n'ime mmepụta nke isotactic polypropylene, a na-ekewapụkwa isotactic polypropylene na atactic polypropylene site na usoro nkewa.

Atactic polypropylene bụ ihe thermoplastic nke na-agbanwe agbanwe nke ukwuu, nke nwere ike ịdọkpụ ya nke ọma. A pụkwara ime ka ọ dị ka roba ethylene-propylene.