Polymers of substituted cyclopentenes
AssigneeE. I. Du Pont de Nemours and Company
InventorsStephan James McLain, Elizabeth Forrester McCord, Alison Margaret Anne Bennett, Steven Dale Ittel, Karl Jeffrey Sweetman, Mark F. Teasley
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Abstract
Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected α-imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.
Claims3
A polymer consisting essentially of repeat units derived from one or more of 3-methylcyclopentene, 4-methylcyclopentene, 3-ethylcyclopentene or 3-cyclopentylcyclopentene, and optionally cyclopentene, provided that when said polymer is a homopolymer of 3-methylcyclopentene, at least about 40 mole percent of repeat units present are of the formula
A homopolycyclopentene that has an end of melting point of 325° C. to about 380° C., provided said homopolycyclopentene has a degree of polymerization of about 50 or more.
Dependencies are inferred from the claim text.