Copolymers of monocyclic esters and carbonates and methods...

Details Copolymers of monocyclic esters and carbonates and methods... Copolymers of monocyclic esters and carbonates and methods...

2006-03-21

2006-03-21

Boykin, Terressa (Department: 1711)

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C264S219000, C428S411100, C525S439000, C528S198000

Reexamination Certificate

active

07015302

ABSTRACT:
Copolymers having repeating units derived from monocyclic esters or carbonates and certain bicyclic diesters and/or carbonates have controllable rheological properties. The bicyclic diester and/or carbonate copolymerizes easily with the monocyclic monomers, especially with lactide, to form copolymer that can have tailored levels of branching. The copolymers have excellent rheological properties, including increased melt tensions and improved shear thinning, compared to the analogous linear polymers.

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