The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 2019
Filed:
Dec. 07, 2016
Toyo Seikan Co., Ltd., Tokyo, JP;
TOYO SEIKAN CO., LTD., Tokyo, JP;
Abstract
A method of recovering lactide which includes introducing a molten resin composition that contains a polylactic acid, a depolymerization catalyst and a carrier resin into a vent chamber () that is maintained under a reduced pressure using a first screw conveyer passage () that extends in the vent chamber (), gasifying the lactide contained in the molten resin composition, and recovering a gaseous lactide from the vent chamber, wherein a second screw conveyer passage () is provided under the first screw conveyer passage () in the vent chamber () to recover the carrier resin.
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