Cossee-Arlman mechanism

The introduction to this article provides insufficient context for those unfamiliar with the subject.
Please help improve the article with a good introductory style.

The Cossee-Arlman mechanism in polymer chemistry is thought to be the mechanism for the phenomenon of stereoregularity in ionic polymerisation of alkenes using Ziegler-Natta or metallocene catalysts.

Additional recommended knowledge

What is the Sensitivity of my Balance?

Don't let static charges disrupt your weighing accuracy

Recognize and detect the effects of electrostatic charges on your balance

The coordination sphere of the metal ligands sterically restricts the entry of olefins - this being enhanced by the use of internal donors (succinates, phthalates etc) & external donors (substituted silanes) (ref: www.answers.com/topic/coordination-polymerization)

Polymerization is thought to start with coordination of the olefin to the the vacant site of an activated Ti-R species and subsequent insertion into the Ti-R bond (ref: dissertations.ub.rug)

Category: Polymer chemistry