Polypropylene molecules contains methyl, and according to methyl-arranged position,it divided to isotactic polypropylene (isotactic polyPropylene), atactic polypropylene (atactic PolyPropylene) and syndiotactic polypropylene (syndiotatic Polypropylene). Methyl is at the same side is called isotactic polypropylene;Methyl is at both sides is called random polypropylene; when methyl alternately arranged between the two sides in the main chain, said regulation polypropylene.Most of the Production of polypropylene resin is with 95% syndiotactic structure, etc. (called isotacticity), the remainder being atactic or syndiotactic polypropylene.
Random polypropylene is a byproduct of the production of isotactic polypropylene. Generated in the production of isotactic polypropylene, atactic polypropylene, the separation method of the isotactic polypropylene and atactic polypropylene separator.