Title:
METHOD FOR RECOVERING WATER-SOLUBLE POLYESTER RESIN FROM DISSOLVED SUPPORT MATERIAL EFFLUENT
Document Type and Number:
WIPO Patent Application WO/2016/185874
Kind Code:
A1
Abstract:
This method for recovering a water-soluble polyester resin is a method for recovering a water-soluble polyester resin that is contained in a support material from effluent in which the support material is dissolved and/or dispersed, the effluent being produced in the course of production of a three-dimensional body by a thermal fusion lamination system, when a three-dimensional body precursor including a three-dimensional body and the support material is brought into contact with a water-based detergent, and the support material is eliminated from the three-dimensional body precursor, wherein the method includes a step for adding a specific type of metal salt to the effluent, a step for heat treating and precipitating the water-soluble polyester resin, and a step for separating and recovering the precipitated water-soluble polyester resin from the effluent. According to this method for recovering a water-soluble polyester resin, there can be provided a method for recovering a water-soluble polyester resin by which a water-soluble polyester resin can be safely recovered from effluent produced in the course of production of a three-dimensional body by a thermal fusion lamination system using a support material having excellent resistance to moisture absorption, and the load on the environment can be reduced.
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Inventors:
KIMURA TAKUMA (JP)
YOSHIMURA TADANORI (JP)
YOSHIMURA TADANORI (JP)
Application Number:
PCT/JP2016/062812
Publication Date:
November 24, 2016
Filing Date:
April 22, 2016
Export Citation:
Assignee:
KAO CORP (JP)
International Classes:
C02F1/58; B01D21/01; B29C67/00; B33Y10/00; C02F1/52
Foreign References:
| JP2014504971A | 2014-02-27 | |||
| JP2011143615A | 2011-07-28 | |||
| JPH01502244A | 1989-08-10 | |||
| JP2011050815A | 2011-03-17 |
Other References:
See also references of EP 3299343A4
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
特許業務法人 ユニアス国際特許事務所 (JP)
特許業務法人 ユニアス国際特許事務所 (JP)
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