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AU2003231482A1 - Process for producing lactide - Google Patents

Process for producing lactide

Info

Publication number
AU2003231482A1
AU2003231482A1 AU2003231482A AU2003231482A AU2003231482A1 AU 2003231482 A1 AU2003231482 A1 AU 2003231482A1 AU 2003231482 A AU2003231482 A AU 2003231482A AU 2003231482 A AU2003231482 A AU 2003231482A AU 2003231482 A1 AU2003231482 A1 AU 2003231482A1
Authority
AU
Australia
Prior art keywords
producing lactide
lactide
producing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU2003231482A
Inventor
Yujiang Fan
Haruo Nishida
Yoshihito Shirai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of AU2003231482A1 publication Critical patent/AU2003231482A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D319/10—1,4-Dioxanes; Hydrogenated 1,4-dioxanes
    • C07D319/12—1,4-Dioxanes; Hydrogenated 1,4-dioxanes not condensed with other rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/12—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/16—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
AU2003231482A 2002-04-25 2003-04-24 Process for producing lactide Abandoned AU2003231482A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002-124375 2002-04-25
JP2002124375 2002-04-25
PCT/JP2003/005244 WO2003091238A1 (en) 2002-04-25 2003-04-24 Process for producing lactide

Publications (1)

Publication Number Publication Date
AU2003231482A1 true AU2003231482A1 (en) 2003-11-10

Family

ID=29267528

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2003231482A Abandoned AU2003231482A1 (en) 2002-04-25 2003-04-24 Process for producing lactide

Country Status (3)

Country Link
JP (1) JP4458422B2 (en)
AU (1) AU2003231482A1 (en)
WO (1) WO2003091238A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5161466B2 (en) * 2007-02-16 2013-03-13 帝人株式会社 Method for producing lactide from polylactic acid
JP5136880B2 (en) * 2007-03-22 2013-02-06 国立大学法人九州工業大学 Lactide recovery method
CN101925591B (en) * 2007-12-26 2013-12-04 克坦顿有限公司 Process for production of cyclic diesters of alpha-hydroxyacids
JP4986244B2 (en) * 2008-11-22 2012-07-25 公益財団法人北九州産業学術推進機構 Method for recovering lactide from flame retardant lactic acid polymer composition
JP5208697B2 (en) * 2008-11-28 2013-06-12 株式会社日本製鋼所 Lactide recovery device and recovery method
JP5051729B2 (en) * 2009-01-20 2012-10-17 公益財団法人北九州産業学術推進機構 Lactide recovery device and recovery method
JP5376373B2 (en) * 2010-02-10 2013-12-25 公益財団法人北九州産業学術推進機構 Lactide recovery method
EP2928948A1 (en) 2012-12-04 2015-10-14 Uhde Inventa-Fischer GmbH Method for selective chemical extraction of lactic acid from polymer blends
JP6691656B2 (en) * 2016-01-29 2020-05-13 東洋製罐株式会社 Lactide recovery method
WO2021181532A1 (en) * 2020-03-10 2021-09-16 マクセルホールディングス株式会社 Polylactic acid decomposition method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3968604B2 (en) * 1997-07-25 2007-08-29 東洋紡績株式会社 Method for producing lactic acid-based polyester and lactic acid-based polyester
JP4003287B2 (en) * 1998-04-08 2007-11-07 トヨタ自動車株式会社 Method for producing lactide capable of suppressing racemization
WO2000018756A1 (en) * 1998-09-25 2000-04-06 Shimadzu Corporation Process for purifying lactide and lactide used as food additive

Also Published As

Publication number Publication date
WO2003091238A1 (en) 2003-11-06
JPWO2003091238A1 (en) 2005-09-02
JP4458422B2 (en) 2010-04-28

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase