GB2331986B - Stabiliser for cyclic lactone production - Google Patents

Stabiliser for cyclic lactone production

Info

Publication number
GB2331986B
GB2331986B GB9725559A GB9725559A GB2331986B GB 2331986 B GB2331986 B GB 2331986B GB 9725559 A GB9725559 A GB 9725559A GB 9725559 A GB9725559 A GB 9725559A GB 2331986 B GB2331986 B GB 2331986B
Authority
GB
United Kingdom
Prior art keywords
stabiliser
cyclic lactone
lactone production
production
cyclic
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.)
Expired - Fee Related
Application number
GB9725559A
Other versions
GB2331986A (en
GB9725559D0 (en
Inventor
Barry Woodfine
Michael Fryars
David Palmer
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.)
Kobe Steel Europe Ltd
Kobe Steel Ltd
Original Assignee
Kobe Steel Europe Ltd
Kobe Steel Ltd
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 Kobe Steel Europe Ltd, Kobe Steel Ltd filed Critical Kobe Steel Europe Ltd
Priority to GB9725559A priority Critical patent/GB2331986B/en
Publication of GB9725559D0 publication Critical patent/GB9725559D0/en
Priority to JP34204998A priority patent/JPH11255763A/en
Publication of GB2331986A publication Critical patent/GB2331986A/en
Application granted granted Critical
Publication of GB2331986B publication Critical patent/GB2331986B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
GB9725559A 1997-12-03 1997-12-03 Stabiliser for cyclic lactone production Expired - Fee Related GB2331986B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9725559A GB2331986B (en) 1997-12-03 1997-12-03 Stabiliser for cyclic lactone production
JP34204998A JPH11255763A (en) 1997-12-03 1998-12-01 Production of cyclic lactone, stabilizer for cyclic lactone and cyclic lactone composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9725559A GB2331986B (en) 1997-12-03 1997-12-03 Stabiliser for cyclic lactone production

Publications (3)

Publication Number Publication Date
GB9725559D0 GB9725559D0 (en) 1998-02-04
GB2331986A GB2331986A (en) 1999-06-09
GB2331986B true GB2331986B (en) 2002-06-26

Family

ID=10823026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9725559A Expired - Fee Related GB2331986B (en) 1997-12-03 1997-12-03 Stabiliser for cyclic lactone production

Country Status (2)

Country Link
JP (1) JPH11255763A (en)
GB (1) GB2331986B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2000454C1 (en) * 2006-11-28 2008-01-02 Purac Biochem Bv Production of stable lactide particles useful as starting material for polylactic acid, by contacting continuous flow of molten lactide with surface having temperature lower than lactide melting point and allowing lactide melt to solidify
EP2072508A1 (en) * 2007-12-19 2009-06-24 Galactic S.A. Method for obtaining lactide
US11046665B2 (en) 2017-01-24 2021-06-29 Kureha Corporation Method for producing α-hydroxycarboxylic acid dimeric cyclic ester
JP6751221B2 (en) * 2018-03-07 2020-09-02 株式会社クレハ Method for producing cyclic ester
CN114315789A (en) * 2020-12-15 2022-04-12 江苏景宏新材料科技有限公司 Preparation method of L-lactide
CN114634526B (en) * 2022-03-10 2024-04-02 江苏景宏新材料科技有限公司 Preparation method and application of Ti-P complex

Also Published As

Publication number Publication date
JPH11255763A (en) 1999-09-21
GB2331986A (en) 1999-06-09
GB9725559D0 (en) 1998-02-04

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 20031022

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20051203