In atactic PP (aPP) the orientation is random. In syndiotactic PP (sPP) the CH (3)-side groups on the monomer alternately point toward the two sides of the polymer backbone.

The properties of PP depend largely on the spatial orientation of the individual monomers as they are added to the growing chain (tacticity). In atactic PP (aPP) the orientation is random.

“This switch from atactic polypropylene to isotactic polypropylene essentially created a multibillion dollar industry because atactic polypropylene is almost useless,” Leibfarth said.

Polypropylene (PP) is one of the most widely used plastics in the world. By controlling the spatial orientation of the propylene building blocks and additional polar components, it should be possible ...

It also provides crude C4, spent sulfuric acid, FFS ROLL BAG, wet atactic polypropylene, wet terephthalic acid, vinyl chloride monomer, ethylene dichloride, hydrochloric acid, and hydrogen chloride.