DE3781133D1 - Herstellung von polymilchsaeure und copolymeren daraus. - Google Patents

Herstellung von polymilchsaeure und copolymeren daraus.

Info

Publication number
DE3781133D1
DE3781133D1 DE8787202432T DE3781133T DE3781133D1 DE 3781133 D1 DE3781133 D1 DE 3781133D1 DE 8787202432 T DE8787202432 T DE 8787202432T DE 3781133 T DE3781133 T DE 3781133T DE 3781133 D1 DE3781133 D1 DE 3781133D1
Authority
DE
Germany
Prior art keywords
copolymers
acid
polymilic
manufacture
lactide
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
DE8787202432T
Other languages
English (en)
Other versions
DE3781133T2 (de
Inventor
Vries Klaas Sybren De
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.)
Akzo Nobel NV
Original Assignee
Akzo NV
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 Akzo NV filed Critical Akzo NV
Publication of DE3781133D1 publication Critical patent/DE3781133D1/de
Application granted granted Critical
Publication of DE3781133T2 publication Critical patent/DE3781133T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
    • C08G63/08—Lactones or lactides
    • 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)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
DE8787202432T 1986-12-19 1987-12-07 Herstellung von polymilchsaeure und copolymeren daraus. Expired - Fee Related DE3781133T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8603231 1986-12-19

Publications (2)

Publication Number Publication Date
DE3781133D1 true DE3781133D1 (de) 1992-09-17
DE3781133T2 DE3781133T2 (de) 1993-06-24

Family

ID=19849020

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787202432T Expired - Fee Related DE3781133T2 (de) 1986-12-19 1987-12-07 Herstellung von polymilchsaeure und copolymeren daraus.

Country Status (8)

Country Link
US (1) US4797468A (de)
EP (1) EP0275581B1 (de)
JP (1) JPS63165430A (de)
AT (1) ATE79386T1 (de)
CA (1) CA1331193C (de)
DE (1) DE3781133T2 (de)
ES (1) ES2052551T3 (de)
GR (1) GR3006204T3 (de)

Families Citing this family (116)

* Cited by examiner, † Cited by third party
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WO1988010260A1 (en) * 1987-06-16 1988-12-29 Boehringer Ingelheim Kg ''meso-lactide'' and process for manufacturing it
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US5319107A (en) * 1990-09-18 1994-06-07 Biopak Technology, Ltd. Method to produce cyclic esters
US5767222A (en) * 1988-08-08 1998-06-16 Chronopol, Inc. Degradable polydioxaneone-based materials
US5274127A (en) * 1990-09-18 1993-12-28 Biopak Technology, Ltd. Lactide production from dehydration of aqueous lactic acid feed
US6323307B1 (en) 1988-08-08 2001-11-27 Cargill Dow Polymers, Llc Degradation control of environmentally degradable disposable materials
US5180765A (en) * 1988-08-08 1993-01-19 Biopak Technology, Ltd. Biodegradable packaging thermoplastics from lactides
JP2714454B2 (ja) * 1988-11-07 1998-02-16 三井東圧化学株式会社 生体吸収性ポリエステルの製造方法
US5149833A (en) * 1989-05-26 1992-09-22 Boehringer Ingelheim Gmbh Process for preparing D,L-Lactide
DE3917178A1 (de) * 1989-05-26 1990-11-29 Boehringer Ingelheim Kg Verbessertes verfahren zur herstellung von d,l-lactid
US5091544A (en) * 1990-05-08 1992-02-25 E. I. Du Pont De Nemours And Company Process for rapid conversion of oligomers to cyclic esters
JP2744696B2 (ja) * 1990-07-13 1998-04-28 イー・アイ・デユポン・ドウ・ヌムール・アンド・カンパニー ラクチドの高収率再生方法
US5076983A (en) * 1990-07-16 1991-12-31 E. I. Du Pont De Nemours And Company Polyhydroxy acid films
US5332839A (en) * 1990-09-18 1994-07-26 Biopak Technology, Ltd. Catalytic production of lactide directly from lactic acid
US5117008A (en) * 1990-10-23 1992-05-26 E. I. Du Pont De Nemours And Company Solvent scrubbing recovery of lactide and other dimeric cyclic esters
US5089632A (en) * 1991-01-30 1992-02-18 E. I. Du Pont De Nemours And Company Process for preparing cyclic esters using a fluorocarbon
US5264614A (en) * 1991-11-22 1993-11-23 E. I. Du Pont De Nemours And Company Recovery of polyhydroxy acids
US5268507A (en) * 1991-11-22 1993-12-07 E. I. Du Pont De Nemours And Company Preparation of amide derivatives of hydroxy acids
US5264617A (en) * 1991-11-22 1993-11-23 E. I. Du Pont De Nemours And Company Preparation of alkyl esters by depolymerization
US5264626A (en) * 1991-11-22 1993-11-23 E. I. Du Pont De Nemours And Company Rapid depolymerization of polyhydroxy acids
US5229528A (en) * 1991-11-22 1993-07-20 E. I. Du Pont De Nemours And Company Rapid depolymerization of polyhydroxy acids
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US5247059A (en) * 1992-01-24 1993-09-21 Cargill, Incorporated Continuous process for the manufacture of a purified lactide from esters of lactic acid
US5142023A (en) * 1992-01-24 1992-08-25 Cargill, Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
US5247058A (en) * 1992-01-24 1993-09-21 Cargill, Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
US5258488A (en) * 1992-01-24 1993-11-02 Cargill, Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
US6005067A (en) * 1992-01-24 1999-12-21 Cargill Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
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US5675021A (en) * 1992-03-19 1997-10-07 Chronopol, Inc. Method to produce and purify cyclic esters
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Also Published As

Publication number Publication date
CA1331193C (en) 1994-08-02
EP0275581B1 (de) 1992-08-12
GR3006204T3 (de) 1993-06-21
EP0275581A1 (de) 1988-07-27
ES2052551T3 (es) 1994-07-16
DE3781133T2 (de) 1993-06-24
ATE79386T1 (de) 1992-08-15
US4797468A (en) 1989-01-10
JPS63165430A (ja) 1988-07-08

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8370 Indication related to discontinuation of the patent is to be deleted
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