Vinyl polymers are a group of polymers derived from substituted vinyl monomers of the type CH2=CHR. Their backbone is an extended alkane chain ...-CH2-CHR-CH2-CHR-..). In popular usage, "vinyl" refers only to polyvinyl chloride (PVC).
Vinyl polymers are the most common type of plastic. Important examples can be distinguished by the R group in the monomer H2C=CHR:
Vinyl polymers are produced using catalysts. Ziegler–Natta catalyst is a typical commercial catalyst for polyethylene and polypropylene.