BR9007686A - Polimerizacao de lactona catalisada por compostos de itrio e de terras raras - Google Patents

Polimerizacao de lactona catalisada por compostos de itrio e de terras raras

Info

Publication number
BR9007686A
BR9007686A BR909007686A BR9007686A BR9007686A BR 9007686 A BR9007686 A BR 9007686A BR 909007686 A BR909007686 A BR 909007686A BR 9007686 A BR9007686 A BR 9007686A BR 9007686 A BR9007686 A BR 9007686A
Authority
BR
Brazil
Prior art keywords
polymerization
catalyed
itrium
lacton
compounds
Prior art date
Application number
BR909007686A
Other languages
English (en)
Portuguese (pt)
Inventor
Stephan James Mclain
Neville Everton Drysdale
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 BR9007686A publication Critical patent/BR9007686A/pt

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)
  • Biological Depolymerization Polymers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Medicinal Preparation (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
BR909007686A 1989-09-29 1990-09-05 Polimerizacao de lactona catalisada por compostos de itrio e de terras raras BR9007686A (pt)

Applications Claiming Priority (2)

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
PCT/US1990/004951 WO1991005001A1 (en) 1989-09-29 1990-09-05 Yttrium and rare earth compounds catalyzed lactone polymerization

Publications (1)

Publication Number Publication Date
BR9007686A true BR9007686A (pt) 1992-08-18

Family

ID=23643768

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909007686A BR9007686A (pt) 1989-09-29 1990-09-05 Polimerizacao de lactona catalisada por compostos de itrio e de terras raras

Country Status (20)

Country Link
US (1) US5028667A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0493529B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JP2858947B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CN (1) CN1051367A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) ATE124709T1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU6624490A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BR (1) BR9007686A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA2066029A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE69020739T2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FI (1) FI921351A0 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GR (1) GR900100721A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IE (1) IE903483A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IL (1) IL95804A0 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
MX (1) MX22628A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NZ (1) NZ235503A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
PL (1) PL287107A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
PT (1) PT95470A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
WO (1) WO1991005001A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
YU (1) YU185290A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ZA (1) ZA907797B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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US5225521A (en) * 1991-12-31 1993-07-06 E. I. Du Pont De Nemours And Company Star-shaped hydroxyacid polymers
US5142023A (en) * 1992-01-24 1992-08-25 Cargill, Incorporated Continuous process for manufacture of lactide polymers with controlled optical purity
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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
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US5635585A (en) * 1992-10-21 1997-06-03 E. I. Du Pont De Nemours And Company Polymerization of, and depolymerization to, cyclic ethers using selected metal compound catalysts
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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
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IN263389B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 2005-11-22 2014-01-31 Segetis Inc
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CN105061734B (zh) * 2015-08-07 2017-01-11 常州大学 具有催化乙交酯开环聚合性能的镧配位聚合物及制备方法
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Also Published As

Publication number Publication date
DE69020739T2 (de) 1995-11-23
ZA907797B (en) 1992-05-27
FI921351A7 (fi) 1992-03-27
CN1051367A (zh) 1991-05-15
US5028667A (en) 1991-07-02
US5028667B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-02-09
MX22628A (es) 1993-11-01
YU185290A (sh) 1992-09-07
CA2066029A1 (en) 1991-03-30
IL95804A0 (en) 1991-06-30
IE903483A1 (en) 1991-04-10
EP0493529B1 (en) 1995-07-05
ATE124709T1 (de) 1995-07-15
JPH05500982A (ja) 1993-02-25
PL287107A1 (en) 1992-03-23
JP2858947B2 (ja) 1999-02-17
WO1991005001A1 (en) 1991-04-18
GR900100721A (el) 1992-01-20
DE69020739D1 (de) 1995-08-10
NZ235503A (en) 1993-03-26
FI921351L (fi) 1992-03-27
AU6624490A (en) 1991-04-28
EP0493529A1 (en) 1992-07-08
FI921351A0 (fi) 1992-03-27
PT95470A (pt) 1991-05-22

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Free format text: PROCEDIMENTO AUTOMATICO DE RECLASSIFICACAO. AS CLASSIFICACOES IPC ANTERIORES ERAM: C08G 63/84; C08G 63/08; C07F 5/00; A61K 47/48.

Ipc: C08G 63/08 (2006.01), C08G 63/82 (2006.01)

Ipc: C08G 63/08 (2006.01), C08G 63/82 (2006.01)