: of, relating to, or involving stereochemical regularity in the repeating units of a polymeric structure.

What is meant by Stereoregular polymer?

(also stereospecific polymer), any one of the polymers whose linear molecules consists of monomeric units having either identical spatial configurations or configurations that, while not identical, alternate in regular fashion.

What catalyst produces stereoregular polymers?

The 1963 Nobel Prize in Chemistry was awarded to German Karl Ziegler, for his discovery of first titanium-based catalysts, and Italian Giulio Natta, for using them to prepare stereoregular polymers from propylene. Ziegler–Natta catalysts have been used in the commercial manufacture of various polyolefins since 1956.