Polymerization of macrocyclic polyester oligomers using...

Details Polymerization of macrocyclic polyester oligomers using... Polymerization of macrocyclic polyester oligomers using...

2005-11-09

2009-02-10

Cain, Edward J (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S779000, C524S789000, C528S411000, C528S416000

Reexamination Certificate

active

07488772

ABSTRACT:
Mixtures or adducts of N-heterocyclic carbenes with metal amides or metal alkoxides are effective catalysts for the polymerization of macrocyclic polyester oligomers. The catalysts are stable at polymerization temperatures, and the polymerization is rapid, resulting in high monomer conversion, high molecular weight, and a mechanically sound material.

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