Title:
METHOD FOR COLLECTING LACTIDE
Document Type and Number:
WIPO Patent Application WO/2017/099109
Kind Code:
A1
Abstract:
The method for collecting lactide according to the present invention uses a vent chamber 3 in which a first screw transport path 11 is extended; utilizes the first screw transport path 11 to introduce a molten resin composition containing a polylactic acid, a depolymerization catalyst, and a carrier resin into the vent chamber 3, which has been retained at a reduced pressure; gasifies lactide contained in the molten resin composition; and collects gasified lactide from the vent chamber. The collection method for lactide is characterized in that a second screw transport path 60 for collecting the carrier resin is provided under the first screw transport path 11 inside the vent chamber 3.
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Inventors:
ITOU TAKUROU (JP)
TANABE JUNKO (JP)
TAGUCHI TOMOAKI (JP)
TANABE JUNKO (JP)
TAGUCHI TOMOAKI (JP)
Application Number:
PCT/JP2016/086330
Publication Date:
June 15, 2017
Filing Date:
December 07, 2016
Export Citation:
Assignee:
TOYO SEIKAN KAISHA LTD (JP)
International Classes:
C08J11/16; B29B17/00; C07D319/12
Foreign References:
JP2012025855A | 2012-02-09 | |||
JP2010126490A | 2010-06-10 | |||
JP2010126491A | 2010-06-10 | |||
JP2008201680A | 2008-09-04 | |||
JPH0977904A | 1997-03-25 |
Other References:
See also references of EP 3388478A4
Attorney, Agent or Firm:
ONO, Hisazumi et al. (JP)
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