Simplified method of producing biodegradable aliphatic polyesters
AssigneeMinistero dell 'Universita'e della Ricerca Scientifica e Technologica
InventorsFernanda Farachi, Marco Foa', Tiziana Milizia
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Abstract
A method of synthesizing biodegradable aliphatic polyesters from one or more aliphatic dicarboxylic acids or diesters of the said acids and one or more linear or branched aliphatic glycols, comprising a first esterification or transesterification step and a second deglycolation under vacuum step, in which the catalyst is monobutylstannoic acid both for the esterification or transesterification step and for the deglycolation under vacuum step.
Claims17
Copolymer of biodegradable aliphatic polyester from one or more aliphatic dicarboxylic acids or diesters of the said acids and one or more linear or branched aliphatic glycols, and from ricinoleic acid and wherein said copolymer has an intrinsic viscosity of between 0.8 and 1.5 dl/g.
Dependencies are inferred from the claim text.