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Patrick Richard Gruber, Eric Stanley Hall, Jeffrey John Kolstad, Matthew Lee Iwen, Richard Douglas Benson, Ronald Leo Borchardt: Continuous process for the manufacture of lactide and lactide polymers. Cargill, Merchant Gould Smith Edell Welter & Schmidt P A, December 4, 2001: US06326458 (183 worldwide citation)

A process for the continuous production of substantially purified lactide and lactide polymers from lactic acid or an ester of lactic acid including the steps of forming crude polylactic acid, preferably in the presence of a catalyst means in the case of the ester of lactic acid, to form a condensat ...


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Patrick Richard Gruber, Eric Stanley Hall, Jeffrey John Kolstad, Matthew Lee Iwen, Richard Douglas Benson, Ronald Leo Borchardt: Continuous process for manufacture of lactide polymers with controlled optical purity. Cargill Incorporated, Merchant & Gould, August 21, 2001: US06277951 (27 worldwide citation)

A process for the continuous production of polylactide polymers from lactic acid which incorporates removal of water or a solvent carrier to concentrate the lactic acid feed followed by polymerization to a low-molecular-weight prepolymer. This prepolymer is fed to a reactor in which a catalyst is ad ...


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Patrick Richard Gruber, Eric Stanley Hall, Jeffrey John Kolstad, Matthew Lee Iwen, Richard Douglas Benson, Ronald Leo Borchardt: Continuous process for manufacture of lactide polymers with controlled optical purity. Cargill Incorporated, Merchant & Gould P C, December 21, 1999: US06005067 (22 worldwide citation)

A process for the continuous production of polylactide polymers from lactic acid which incorporates removal of water or a solvent carrier to concentrate the lactic acid feed followed by polymerization to a low-molecular-weight prepolymer. This prepolymer is fed to a reactor in which a catalyst is ad ...


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