Production of isotactic and regiorandom polypropylene based polymer and block copolymers
AssigneeCornell Research Foundation, Inc.
InventorsGeoffrey W. Coates, Anna Cherian, Jeffrey M. Rose
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Abstract
One step ortho-alkylation of anilines with styrenes to give chiral anilines is obtained using a strong acid catalyst, e.g. CF3SO3H. Condensation of the product to give ligand and metallation gives complex which catalyzes polymerization of propylene to give isotactic propylene or regiorandom propylene of low PDI or blocks thereof, depending on polymerization temperature.
Claims2
Multi-block copolymer having PDI less than 3 and Mn ranging from 1,000 to 1,000,000 comprising at least one block of ethylene based polymer with 1 to 100 methyl groups per 1000 methylene groups, Mn ranging from 1,000 to 999,000 and at least one block of regiorandom propylene having a percentage of 3,1-insertion ranging from 1-99%.
Dependencies are inferred from the claim text.