Process for producing lactone polyesters
AssigneeDaicel Chemical Industries, Ltd.
InventorsMasayoshi Kubo, Michio Nakanishi, Mamoru Kimura
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Abstract
In a process for producing a lactone polyester which comprises ring-opening polymerization of a lactone in the presence of a metal containing organic compound as a catalyst, the improvement wherein said compound is an alcoholate, chelate or organic acid salt of vanadium or molybdenum.
Claims14
In a process for producing a lactone polyester which comprises ring-opening polymerization of a lactone in the presence of a metal containing organic compound as a catalyst, the improvement wherein said catalyst is an alcoholate, chelate or organic carboxylic acid salt of vanadium or molybdenum.
In a process for producing a lactone polyester which comprises ring-opening polymerization of a lactone in the presence of a metal containing organic compound as a catalyst and a polymerization initiator, the improvement which comprises said catalyst being a zinc acetylacetonate.
Dependencies are inferred from the claim text.