NL162381C - Werkwijze ter bereiding van zo zuiver mogelijk beta-glycolide. - Google Patents

Werkwijze ter bereiding van zo zuiver mogelijk beta-glycolide.

Info

Publication number
NL162381C
NL162381C NL6810542.A NL6810542A NL162381C NL 162381 C NL162381 C NL 162381C NL 6810542 A NL6810542 A NL 6810542A NL 162381 C NL162381 C NL 162381C
Authority
NL
Netherlands
Prior art keywords
glycolide
beta
pure
preparing
beta glycolide
Prior art date
Application number
NL6810542.A
Other languages
English (en)
Other versions
NL6810542A (nl
NL162381B (nl
Original Assignee
American Cyanamid Co
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 American Cyanamid Co filed Critical American Cyanamid Co
Publication of NL6810542A publication Critical patent/NL6810542A/xx
Publication of NL162381B publication Critical patent/NL162381B/nl
Application granted granted Critical
Publication of NL162381C publication Critical patent/NL162381C/nl

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)
  • Medicinal Preparation (AREA)
  • Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
NL6810542.A 1967-08-22 1968-07-25 Werkwijze ter bereiding van zo zuiver mogelijk beta-glycolide. NL162381C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66230967A 1967-08-22 1967-08-22

Publications (3)

Publication Number Publication Date
NL6810542A NL6810542A (nl) 1969-02-25
NL162381B NL162381B (nl) 1979-12-17
NL162381C true NL162381C (nl) 1980-05-16

Family

ID=24657220

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6810542.A NL162381C (nl) 1967-08-22 1968-07-25 Werkwijze ter bereiding van zo zuiver mogelijk beta-glycolide.

Country Status (10)

Country Link
US (1) US3435008A (nl)
BE (1) BE713662A (nl)
DE (1) DE1668994B2 (nl)
DK (1) DK127477B (nl)
ES (1) ES357467A1 (nl)
FR (1) FR1560107A (nl)
GB (2) GB1188298A (nl)
IT (1) IT947017B (nl)
NL (1) NL162381C (nl)
SE (1) SE355809B (nl)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887699A (en) * 1969-03-24 1975-06-03 Seymour Yolles Biodegradable polymeric article for dispensing drugs
US3878284A (en) * 1971-08-12 1975-04-15 American Cyanamid Co Processes for making shaped articles such as filaments or films from solutions of polyglycolic acid
US3976071A (en) * 1974-01-07 1976-08-24 Dynatech Corporation Methods of improving control of release rates and products useful in same
US4727163A (en) * 1985-07-11 1988-02-23 E. I. Du Pont De Nemours And Company Process for preparing highly pure cyclic esters
US4650851A (en) * 1986-03-19 1987-03-17 Pfizer Hospital Products Group, Inc. Purification of glycolide
DE3781133T2 (de) * 1986-12-19 1993-06-24 Akzo Nv Herstellung von polymilchsaeure und copolymeren daraus.
US4835293A (en) * 1987-02-24 1989-05-30 E. I. Du Pont De Nemours And Company Atmospheric pressure process for preparing pure cyclic esters
US5274127A (en) * 1990-09-18 1993-12-28 Biopak Technology, Ltd. Lactide production from dehydration of aqueous lactic acid feed
US5319107A (en) * 1990-09-18 1994-06-07 Biopak Technology, Ltd. Method to produce cyclic esters
US5223630A (en) * 1989-10-10 1993-06-29 E. I. Du Pont De Nemours And Company Glycolide purification process
US5332839A (en) * 1990-09-18 1994-07-26 Biopak Technology, Ltd. Catalytic production of lactide directly from lactic acid
US5686630A (en) * 1993-09-29 1997-11-11 Chronopol, Inc. Purifying cyclic esters by aqueous solvent extraction
US5675021A (en) * 1992-03-19 1997-10-07 Chronopol, Inc. Method to produce and purify cyclic esters
US5420304A (en) * 1992-03-19 1995-05-30 Biopak Technology, Ltd. Method to produce cyclic esters
US5391768A (en) * 1993-03-25 1995-02-21 United States Surgical Corporation Purification of 1,4-dioxan-2-one by crystallization
US6074673A (en) * 1996-04-22 2000-06-13 Guillen; Manuel Slow-release, self-absorbing, drug delivery system
CN104619690B (zh) * 2012-11-22 2016-10-12 株式会社吴羽 具备通过气液逆流接触而进行的精馏工序的乙交酯的制造方法、以及粗乙交酯的精炼方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676945A (en) * 1950-10-18 1954-04-27 Du Pont Condensation polymers of hydroxyacetic acid
US2585427A (en) * 1951-01-11 1952-02-12 Process fob preparing condensation
US2668162A (en) * 1952-03-20 1954-02-02 Du Pont Preparation of high molecular weight polyhydroxyacetic ester
US3297033A (en) * 1963-10-31 1967-01-10 American Cyanamid Co Surgical sutures

Also Published As

Publication number Publication date
NL6810542A (nl) 1969-02-25
FR1560107A (nl) 1969-03-14
US3435008A (en) 1969-03-25
BE713662A (nl) 1968-10-14
GB1188297A (en) 1970-04-15
ES357467A1 (es) 1970-03-01
IT947017B (it) 1973-05-21
DE1668994C3 (nl) 1974-01-31
SE355809B (nl) 1973-05-07
DE1668994A1 (de) 1972-03-23
GB1188298A (en) 1970-04-15
NL162381B (nl) 1979-12-17
DE1668994B2 (de) 1973-07-05
DK127477B (da) 1973-11-12

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Legal Events

Date Code Title Description
VJC Lapsed due to non-payment of the due maintenance fee for the patent or patent application