GR900100721A - Πολυμερισμός λακτόνης που καταλύεται από ενώσεις υτρίου και σπανων γαιών. - Google Patents

Πολυμερισμός λακτόνης που καταλύεται από ενώσεις υτρίου και σπανων γαιών.

Info

Publication number
GR900100721A
GR900100721A GR900100721A GR900100721A GR900100721A GR 900100721 A GR900100721 A GR 900100721A GR 900100721 A GR900100721 A GR 900100721A GR 900100721 A GR900100721 A GR 900100721A GR 900100721 A GR900100721 A GR 900100721A
Authority
GR
Greece
Prior art keywords
yttrium
rare earth
earth compounds
lactone polymerization
biodegradable
Prior art date
Application number
GR900100721A
Other languages
English (en)
Inventor
Everton Neville Drysdale
James Stephan Mclain
Original Assignee
Du Pont
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 Du Pont filed Critical Du Pont
Publication of GR900100721A publication Critical patent/GR900100721A/el

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
    • 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
    • C08G63/78—Preparation processes
    • C08G63/82—Preparation processes characterised by the catalyst used
    • C08G63/823—Preparation processes characterised by the catalyst used for the preparation of polylactones or polylactides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

Μέθοδος δια τον πολυμερισμό λακτόνων ο οποίος καταλύεται από ένωση υττρίου και σπανίων γαιών και ζωντανές συνθέσεις πολυμερών τέτοιων πολυμερισμών, νέα προϊόντα πολυεστέρος τέτοιων πολυμερισμών και νέες ενώσεις υττρίου και σπανίων γαιών που είναι χρήσιμες ως καταλύτες στον πολυμερισμό βιοαποικοδομησίμων πολυμερών δια ιατρικές χρησιμοποιήσεις και εύκαμπτες μεμβράνες δια συσκευασία. ω
GR900100721A 1989-09-29 1990-09-28 Πολυμερισμός λακτόνης που καταλύεται από ενώσεις υτρίου και σπανων γαιών. GR900100721A (el)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/414,964 US5028667A (en) 1989-09-29 1989-09-29 Yttrium and rare earth compounds catalyzed lactone polymerization

Publications (1)

Publication Number Publication Date
GR900100721A true GR900100721A (el) 1992-01-20

Family

ID=23643768

Family Applications (1)

Application Number Title Priority Date Filing Date
GR900100721A GR900100721A (el) 1989-09-29 1990-09-28 Πολυμερισμός λακτόνης που καταλύεται από ενώσεις υτρίου και σπανων γαιών.

Country Status (20)

Country Link
US (1) US5028667A (el)
EP (1) EP0493529B1 (el)
JP (1) JP2858947B2 (el)
CN (1) CN1051367A (el)
AT (1) ATE124709T1 (el)
AU (1) AU6624490A (el)
BR (1) BR9007686A (el)
CA (1) CA2066029A1 (el)
DE (1) DE69020739T2 (el)
FI (1) FI921351A0 (el)
GR (1) GR900100721A (el)
IE (1) IE903483A1 (el)
IL (1) IL95804A0 (el)
MX (1) MX22628A (el)
NZ (1) NZ235503A (el)
PL (1) PL287107A1 (el)
PT (1) PT95470A (el)
WO (1) WO1991005001A1 (el)
YU (1) YU185290A (el)
ZA (1) ZA907797B (el)

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JP2717889B2 (ja) * 1991-04-12 1998-02-25 高砂香料工業株式会社 光学活性エーテルラクトン類、その光学活性ポリマーおよびそのポリマーの製造方法
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US5208297A (en) * 1991-12-30 1993-05-04 E. I. Du Pont De Nemours And Company Rare earth metal coordination compounds as lactone polymerization catalysts
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US6005067A (en) * 1992-01-24 1999-12-21 Cargill Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
US5247059A (en) * 1992-01-24 1993-09-21 Cargill, Incorporated Continuous process for the manufacture of a purified lactide from esters of lactic acid
US5258488A (en) * 1992-01-24 1993-11-02 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
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US5235031A (en) * 1992-03-13 1993-08-10 E. I. Du Pont De Nemours And Company Polymerization of lactide
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US5541346A (en) * 1992-10-21 1996-07-30 E. I. Du Pont De Nemours And Company Polymerization of, and depolymerization to, cyclic ethers using selected metal compound catalysts
US5317064A (en) * 1992-12-11 1994-05-31 E. I. Du Pont De Nemours And Company Manufacture of polylactide stereocomplexes
US5420235A (en) * 1993-01-21 1995-05-30 E. I. Du Pont De Nemours And Company Continuous poly (hydroxy acid) polymerization using a counter-current impeller mixing system
US5631066A (en) * 1993-01-25 1997-05-20 Chronopol, Inc. Process for making metalized films and films produced therefrom
US5202413A (en) * 1993-02-16 1993-04-13 E. I. Du Pont De Nemours And Company Alternating (ABA)N polylactide block copolymers
US5342969A (en) * 1993-03-03 1994-08-30 E. I. Du Pont De Nemours And Company Recovery of hydroxycarboxylic acid values from poly(hydroxycarboxylic acids)
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FR2707653B1 (fr) * 1993-07-16 1995-09-15 Vetoquinol Sa Conjugué entre un polymère biocompatible et biodégradable et une molécule notamment une molécule biologiquement active, à hydrogène mobile, son procédé de préparation et composition pharmaceutique comprenant ce conjugué.
US5382617A (en) * 1993-08-20 1995-01-17 E. I. Du Pont De Nemours And Company Stabilization of poly(hydroxy acid)s derived from lactic or glycolic acid
US5374743A (en) * 1993-09-30 1994-12-20 E. I. Du Pont De Nemours And Company Process for the synthesis of lactide or glycolide from lactic acid or glycolide acid oligomers
US5489651A (en) * 1994-02-14 1996-02-06 The Regents Of The University Of California Polymerization using bimetallic bis-lanthanoid initiators
US5639466A (en) * 1994-02-24 1997-06-17 Chronopol, Inc. Method for packaging foodstuffs
US5399666A (en) * 1994-04-21 1995-03-21 E. I. Du Pont De Nemours And Company Easily degradable star-block copolymers
US5475069A (en) * 1994-10-31 1995-12-12 E. I. Du Pont De Nemours And Company Polymerization of vinyl ethers
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US5618319A (en) * 1996-06-20 1997-04-08 Chevron Chemical Company Alkylamine polylactone aminocarbamates and fuel compositions containing the same
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US4719246A (en) * 1986-12-22 1988-01-12 E. I. Du Pont De Nemours And Company Polylactide compositions
JPS6368631A (ja) * 1986-09-09 1988-03-28 Daicel Chem Ind Ltd ポリε−カプロラクトン樹脂
BE1001149A6 (fr) * 1989-05-17 1989-08-01 Chimie Macromoleculaire Et De Procede de preparation de polymeres de lactones fonctionnels, polylactones telles qu'ainsi obtenues et leur utilisation.

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Title
CHEMICAL ABSTRACTS, vol. 110, no. 20, 15th May 1989, page 4, abstract no. 173825r, Columbus, Ohio, US; J. SUN et al.: "A new catalyst for the ring opening polymerization and copolymerization of lactide", & ZHEJIANG DAXUE XUEBAO, ZIRAN KEXUEBAN 1988, 22(6), 203 *
CHEMICAL ABSTRACTS, vol. 99, no. 16, 17th October 1983, page 650, abstract no. 132703k, Columbus, Ohio, US; H. SUGIMOTO et al.: "Preparation and characterization of some rare-earth complexes of the phthalocyanine radical", & CHEM. LETT. 1983, (8), 1167-70 *
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MACROMOLECULES, vol. 21, no. 2, February 1988, pages 286-293, Washington, DC, US; H.R. KRICHELDORF et al.: "Poly(lactones). 9. Polymerization mechanism of metal alkoxide initiated polymerizations of lactide and various lactones" *
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Also Published As

Publication number Publication date
EP0493529B1 (en) 1995-07-05
DE69020739T2 (de) 1995-11-23
FI921351A (fi) 1992-03-27
DE69020739D1 (de) 1995-08-10
WO1991005001A1 (en) 1991-04-18
MX22628A (es) 1993-11-01
FI921351A0 (fi) 1992-03-27
ATE124709T1 (de) 1995-07-15
US5028667A (en) 1991-07-02
CA2066029A1 (en) 1991-03-30
BR9007686A (pt) 1992-08-18
IL95804A0 (en) 1991-06-30
ZA907797B (en) 1992-05-27
YU185290A (sh) 1992-09-07
CN1051367A (zh) 1991-05-15
PT95470A (pt) 1991-05-22
NZ235503A (en) 1993-03-26
EP0493529A1 (en) 1992-07-08
US5028667B1 (el) 1993-02-09
JP2858947B2 (ja) 1999-02-17
JPH05500982A (ja) 1993-02-25
PL287107A1 (en) 1992-03-23
IE903483A1 (en) 1991-04-10
AU6624490A (en) 1991-04-28

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