| http://www.w3.org/ns/prov#value | - N materials can be purchased from Shell Chemical Company. [0101] C. Preparation of Polyesters [0102] Polyesters and methods for their preparation (including the specific monomers employed in their formation, their proportions, polymerization temperatures, catalysts and other conditions) are well-known in the art and reference is made thereto for the purposes herein.
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