Enzyme-catalyzed polycarbonate and polycarbonate ester...

Details Enzyme-catalyzed polycarbonate and polycarbonate ester... Enzyme-catalyzed polycarbonate and polycarbonate ester...

2011-07-05

2011-07-05

Boykin, Terressa M (Department: 1765)

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing oxygen-containing organic compound

C435S136000, C510S309000, C510S320000, C528S271000, C528S272000, C546S089000, C546S150000

Reexamination Certificate

active

07972822

ABSTRACT:
An enzymatic process for preparing aliphatic polycarbonates via terpolymerization or transesterification using a dialkyl carbonate, an aliphatic diester, and an aliphatic diol or triol reactant. A catalyst having an enzyme capable of catalyzing an ester hydrolysis reaction in an aqueous environment is subsequently added to the reaction mixture. Next, polymerization of the reaction proceeds for an allotted time at a temperature≦100° C. Finally, the copolymer is isolated from an the catalyst via filtration.

REFERENCES:
patent: 2009/0162337 (2009-06-01), Gross et al.
patent: 2009/0298139 (2009-12-01), Zou et al.
patent: 2010/0041856 (2010-02-01), Gross et al.

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