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Melt-processed films of thermoplastic cellulose and microbial aliphatic polyester

By: Tim Wright

Editor-in-Chief, Contract Pharma

US Patent No.: 8,586,821 B2 
Inventor(s): James H. Wang, Appleton, WI, U.S.; and JaeHong Lee, Yongin-si, Republic of Korea.
Company: Kimberly-Clark Worldwide, Inc., Neenah, WI, U.S.
Filed: 12/23/09
Issue: 11/19/13

A melt-processed thermoplastic material film comprising: a blend of about 5 wt. % to about 95 wt. % of a thermoplastic cellulose selected from cellulose ether and cellulose alkanoate with 2 to 10 carbons in an alkanoate group having a melting point temperature between about 100° C. to about 200° C., and about 5 wt. % to about 95 wt. % of a polyhydroxyalkanoate with an average molecular weight of at least 20,000 g/mol.

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