| http://www.w3.org/ns/prov#value | - is an alkylene group of from 2-4 carbon atoms and y is an integer of from about 100-350, and polyethylene oxide-polypropylene oxide block copolymer, e.g., one corresponding to the general formula H(OCH2 CH2)X (OC3 H6)Y (OCH2 CH2)z OH wherein x is an integer of from about 45-90, y is an integer of from about 60-85 and z is an integer of from about 45-90 with (2) a mixture of lactide monomer and gly
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