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US 2008/0177009 A1Published application
Lactic Acid Polymers
AssigneeTate & Lyle Public Limited Company
InventorsNils Dan Anders Sodergard, Erik Mikael Stolt
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Abstract
A blend of a multiply branched lactic acid polymer of one steric configuration with a linear lactic acid polymer of the opposite steric configuration has different and more useful properties than either component alone.
Claims10
A polymer composition comprising:
- a first lactic acid polymer which comprises at least three chains of lactic acid units attached to a polyfunctional initiator residue, at least a segment of each chain being in the R- or the S-configuration;
- and a second lactic acid polymer which is linear and contains at least a segment which has a steric configuration opposite to the steric configuration of the lactic acid polymer chains of the first polymer.
Dependencies are inferred from the claim text.