ES8300121A1 - Procedimiento de preparacion de poli(tereftalato de etilen- glicol) - Google Patents

Procedimiento de preparacion de poli(tereftalato de etilen- glicol)

Info

Publication number
ES8300121A1
ES8300121A1 ES502313A ES502313A ES8300121A1 ES 8300121 A1 ES8300121 A1 ES 8300121A1 ES 502313 A ES502313 A ES 502313A ES 502313 A ES502313 A ES 502313A ES 8300121 A1 ES8300121 A1 ES 8300121A1
Authority
ES
Spain
Prior art keywords
pet
less
mol
ppm
recurring units
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
Application number
ES502313A
Other languages
English (en)
Spanish (es)
Other versions
ES502313A0 (es
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.)
Rhone Poulenc Industries SA
Original Assignee
Rhone Poulenc Industries SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9242152&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES8300121(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rhone Poulenc Industries SA filed Critical Rhone Poulenc Industries SA
Publication of ES502313A0 publication Critical patent/ES502313A0/es
Publication of ES8300121A1 publication Critical patent/ES8300121A1/es
Expired 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
    • 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
    • C08G63/80—Solid-state polycondensation
    • 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
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16—Dicarboxylic acids and dihydroxy compounds
    • 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
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16—Dicarboxylic acids and dihydroxy compounds
    • C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/181—Acids containing aromatic rings
    • C08G63/183—Terephthalic acids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1397—Single layer [continuous layer]

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)
  • Wrappers (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Peptides Or Proteins (AREA)
  • Detergent Compositions (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
ES502313A 1980-05-20 1981-05-19 Procedimiento de preparacion de poli(tereftalato de etilen- glicol) Expired ES8300121A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8011201A FR2482971A1 (fr) 1980-05-20 1980-05-20 Polyesters pour emballages a usage alimentaire et leur procede d'obtention

Publications (2)

Publication Number Publication Date
ES502313A0 ES502313A0 (es) 1982-10-01
ES8300121A1 true ES8300121A1 (es) 1982-10-01

Family

ID=9242152

Family Applications (1)

Application Number Title Priority Date Filing Date
ES502313A Expired ES8300121A1 (es) 1980-05-20 1981-05-19 Procedimiento de preparacion de poli(tereftalato de etilen- glicol)

Country Status (13)

Country Link
US (1) US4340721B1 (cg-RX-API-DMAC7.html)
EP (1) EP0041035B2 (cg-RX-API-DMAC7.html)
JP (1) JPS5716024A (cg-RX-API-DMAC7.html)
KR (1) KR840000468B1 (cg-RX-API-DMAC7.html)
AT (1) ATE10375T1 (cg-RX-API-DMAC7.html)
AU (1) AU540702B2 (cg-RX-API-DMAC7.html)
BR (1) BR8103108A (cg-RX-API-DMAC7.html)
CA (1) CA1164144A (cg-RX-API-DMAC7.html)
DE (1) DE3167283D1 (cg-RX-API-DMAC7.html)
ES (1) ES8300121A1 (cg-RX-API-DMAC7.html)
FR (1) FR2482971A1 (cg-RX-API-DMAC7.html)
MX (1) MX166409B (cg-RX-API-DMAC7.html)
PT (1) PT73056B (cg-RX-API-DMAC7.html)

Families Citing this family (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401805A (en) * 1982-03-01 1983-08-30 Eastman Kodak Company Modified poly(ethylene terephthalate) having improved gas barrier properties
DE3213025C2 (de) * 1982-04-02 1997-06-12 Fischer Karl Ind Gmbh Verfahren zur Nachkondensation von Polykondensaten
US4403090A (en) * 1982-09-07 1983-09-06 The Goodyear Tire & Rubber Company Polyisophthalates and copolymers thereof having high barrier properties
US4447595A (en) * 1982-09-07 1984-05-08 The Goodyear Tire & Rubber Company Polyterephthalates and copolymers thereof having high clarity and process for making same
JPS59219328A (ja) * 1983-05-28 1984-12-10 Toyobo Co Ltd 高重合度ポリエステルの製造方法
US4451641A (en) * 1983-06-13 1984-05-29 Eastman Kodak Company Radiation-resistant container material of poly(tetramethylene terephthalate)
US4619987A (en) * 1984-10-12 1986-10-28 Teijin Limited Process for preparation of high-molecular weight polyester
US4560741A (en) * 1985-04-12 1985-12-24 Eastman Kodak Company Polyester resins capable of forming containers having improved gas barrier properties
JPS63142028A (ja) * 1986-12-05 1988-06-14 Toyo Seikan Kaisha Ltd ポリエステル製容器及び包装体
US5256363A (en) * 1987-03-26 1993-10-26 Mitsui Petrochemical Industries, Ltd. Polyethylene terephthalate and uses thereof
GB8926631D0 (en) * 1989-11-24 1990-01-17 Ici Plc Polymer compositions
GB9013481D0 (en) * 1990-06-15 1990-08-08 Ici Plc Polyester polymer products
DE4223007A1 (de) * 1991-07-15 1993-02-04 Mitsubishi Chem Ind Copolyester und daraus hergestellte behaelter und gereckte folien
JP3136743B2 (ja) 1992-03-17 2001-02-19 三菱化学株式会社 共重合ポリエステルおよびその成形体
JP3136767B2 (ja) 1992-06-10 2001-02-19 三菱化学株式会社 共重合ポリエステルならびにそれより成る中空容器および延伸フィルム
JP3136768B2 (ja) 1992-06-10 2001-02-19 三菱化学株式会社 共重合ポリエステルならびにそれより成る中空容器および延伸フィルム
US5250333A (en) * 1992-10-26 1993-10-05 Hoechst Celanese Corporation Modified polyethylene terephthalate
DE69331734T2 (de) * 1992-12-04 2003-05-08 Toray Industries, Inc. Polyesterfilm für thermische laminierung
DE4429524C2 (de) * 1994-08-19 1997-12-18 Inventa Ag Verfahren zur Herstellung von linearen omega-Hydroxycarbonsäureeinheiten enthaltenden Copolyestern
US5648032A (en) * 1995-08-01 1997-07-15 Eastman Chemical Company Process for producing polyester articles having low acetaldehyde content
US5912307A (en) * 1996-05-03 1999-06-15 Bp Amoco Corporation Polyester compositions
US6048957A (en) * 1997-05-01 2000-04-11 Eastman Chemical Company Process for polyesters with improved properties
AU738285B2 (en) * 1997-08-18 2001-09-13 Teijin Limited A copolyester for molding a bottle
US6268026B1 (en) 1997-10-20 2001-07-31 Hoechst Celanese Corporation Multilayer laminate formed from a substantially stretched non-molten wholly aromatic liquid crystalline polymer and non-liquid crystalline polyester and method for forming same
US6312772B1 (en) 1997-10-20 2001-11-06 Hoechst Celanese Corporation Multilayer laminate formed from a substantially stretched non-molten wholly aromatic liquid crystalline polymer and non-polyester thermoplastic polymer
US6426128B1 (en) 1998-01-06 2002-07-30 Hna Holdings, Inc. Co-processable multi-layer laminates for forming high strength, haze-free, transparent articles and methods of producing same
IT1298635B1 (it) * 1998-03-17 2000-01-12 Sinco Ricerche Spa Resine poliestere aventi migliorate proprieta'
US6113997A (en) * 1998-05-26 2000-09-05 Shell Oil Company Process to prepare a polyester resin
US6312503B1 (en) 1999-10-13 2001-11-06 Arteva North America S.A.R.L. System to quench gasses and remove condensables
MXPA02003932A (es) 1999-10-27 2003-03-27 Coca Cola Co Proceso para la reduccion de acetaldehido y oxigeno en bebidas contenidas en envases basados en poliester.
FR2828129A1 (fr) * 2001-07-31 2003-02-07 Perrier Vittel Man Technologie Procedes de fabrication de preformes et de contenants en pet tels que bouteilles alimentaires, contenants et preformes intermediaires obtenus
FR2828199A1 (fr) * 2001-07-31 2003-02-07 Perrier Vittel Man Technologie Polyester a faible iv et faible taux d'acetaldehyde, preformes et contenants creux obtenus a partir de ce polymere
FR2830788B1 (fr) * 2001-10-12 2006-09-22 Tergal Fibres Procede de fabrication de corps creux, corps creux, preformes et bouteilles obtenus par ce procede
TWI311995B (en) * 2002-08-05 2009-07-11 Mitsubishi Chemical Corporatio Polyester resin and its production process
EP1433804A1 (en) * 2002-12-03 2004-06-30 Nan Ya Plastics Corp. Copolyester composition for manufacturing large volume polyester bottle
US7303795B2 (en) 2003-03-13 2007-12-04 Invista North America S.A. R.L. Molding of polypropylene with enhanced reheat characteristics
US7368523B2 (en) * 2004-11-12 2008-05-06 Eastman Chemical Company Polyester polymer and copolymer compositions containing titanium nitride particles
US20060051542A1 (en) * 2004-09-03 2006-03-09 Zhiyong Xia Polyester polymer and copolymer compositions containing metallic molybdenum particles
US7662880B2 (en) * 2004-09-03 2010-02-16 Eastman Chemical Company Polyester polymer and copolymer compositions containing metallic nickel particles
US7816436B2 (en) * 2004-11-08 2010-10-19 INVISTA North America S.à.r.l. Carbon black with large primary particle size as reheat additive for polyester and polypropylene resins
US20060105129A1 (en) * 2004-11-12 2006-05-18 Zhiyong Xia Polyester polymer and copolymer compositions containing titanium carbide particles
US7300967B2 (en) * 2004-11-12 2007-11-27 Eastman Chemical Company Polyester polymer and copolymer compositions containing metallic titanium particles
US20060122300A1 (en) * 2004-12-07 2006-06-08 Zhiyong Xia Polyester polymer and copolymer compositions containing steel particles
US20060222795A1 (en) * 2005-03-31 2006-10-05 Howell Earl E Jr Polyester polymer and copolymer compositions containing particles of one or more transition metal compounds
US8557950B2 (en) 2005-06-16 2013-10-15 Grupo Petrotemex, S.A. De C.V. High intrinsic viscosity melt phase polyester polymers with acceptable acetaldehyde generation rates
US7745512B2 (en) * 2005-09-16 2010-06-29 Eastman Chemical Company Polyester polymer and copolymer compositions containing carbon-coated iron particles
US7776942B2 (en) * 2005-09-16 2010-08-17 Eastman Chemical Company Polyester polymer and copolymer compositions containing particles of titanium nitride and carbon-coated iron
US9777111B2 (en) * 2005-10-20 2017-10-03 Grupo Petrotemex, S.A. De C.V. PET polymer with improved properties
US20070128389A1 (en) * 2005-12-06 2007-06-07 Dak Americas Llc Process for manufacturing co-polyester barrier resins without solid-state polymerization, co-polyester resins made by the process, and clear mono-layer containers made of the co-polyester resins
US7358324B2 (en) 2005-12-06 2008-04-15 Dak Americas Llc Manufacturing method of co-polyester resins for clear mono-layer containers with improved gas barrier characteristics
MX2008012458A (es) * 2006-03-29 2008-10-10 Nestle Waters Man & Technology Metodo para la produccion directa de articulos de poliester para propositos de envase y articulos obtenidos de los mismos.
US20070260002A1 (en) * 2006-05-04 2007-11-08 Zhiyong Xia Titanium nitride particles, methods of making them, and their use in polyester compositions
US20080058495A1 (en) * 2006-09-05 2008-03-06 Donna Rice Quillen Polyester polymer and copolymer compositions containing titanium and yellow colorants
US20090186177A1 (en) * 2008-01-22 2009-07-23 Eastman Chemical Company Polyester melt phase products and process for making the same
DE102009010597A1 (de) 2008-07-12 2010-01-14 Epc Industrial Engineering Gmbh Verfahren zur Herstellung von Polyester, insbesondere linearer Polyester, für Textilgarne und Textilfasern sowie für Flaschen und Anlage zur Durchführung des Verfahrens
EP2168751A1 (en) 2008-09-29 2010-03-31 Nestec S.A. Method of making a container such as a bottle from a preform made of thermoplastic polymer
PL2403894T3 (pl) 2009-03-03 2016-12-30 Opakowanie pochodzenia biologicznego z politereftalanu etylenu i sposób jego produkcji
CN101948567A (zh) * 2010-09-01 2011-01-19 华润包装材料有限公司 一种用于制造含气软饮料包装制品的改性共聚酯及其制备方法
EP2747981B1 (en) * 2011-08-25 2017-03-01 Plastipak Packaging, Inc. Extruded pet parison
WO2013034950A1 (en) * 2011-09-08 2013-03-14 Société Anonyme Des Eaux Minerales D'evian Method for producing a bio-pet polymer
PT2807082T (pt) * 2012-01-25 2018-11-09 Plastipak Packaging Inc Pré-forma de pet extrudada e recipiente produzido
EP3116933B1 (en) 2014-03-11 2018-05-09 Synvina C.V. Process for enhancing the molecular weight of a polyester
NL2015265B1 (en) 2015-08-04 2017-02-21 Furanix Technologies Bv Polyester composition.
NL2015266B1 (en) 2015-08-04 2017-02-21 Furanix Technologies Bv Poly(alkylene furandicarboxylate)-comprising polyester.
EP3387038B1 (en) 2015-12-11 2025-07-09 Société Anonyme des Eaux Minérales d'Evian et en Abrégé "S.A.E.M.E" Pet polymer with an anti-crystallization comonomer that can be bio-sourced

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049631A (en) * 1975-12-22 1977-09-20 Owens-Illinois, Inc. Isophthalic acid/p,p-sulfonyldibenzoic acid/ethylene glycol/neopentyl glycol polyester compositions and containers made therefrom
DE2706123A1 (de) * 1977-02-14 1978-08-17 Bayer Ag Schnell kristallisierende polyaethylenterephthalate und verfahren zu ihrer herstellung
US4154920A (en) * 1978-03-13 1979-05-15 Owens-Illinois, Inc. Methods for producing improved stable polyethylene terephthalate
US4230819A (en) * 1979-04-13 1980-10-28 The Goodyear Tire & Rubber Company Eliminating acetaldehyde from crystalline polyethylene terephthalate resin
US4225549A (en) * 1979-07-18 1980-09-30 The Mead Corporation Method to increase the heat deflection temperature of amorphous polyethylene terephthalate
US4256860A (en) * 1979-12-26 1981-03-17 Eastman Kodak Company Copolyetheresters

Also Published As

Publication number Publication date
KR830006372A (ko) 1983-09-24
EP0041035A1 (fr) 1981-12-02
ES502313A0 (es) 1982-10-01
ATE10375T1 (de) 1984-12-15
DE3167283D1 (en) 1985-01-03
PT73056A (fr) 1981-06-01
CA1164144A (fr) 1984-03-20
FR2482971B1 (cg-RX-API-DMAC7.html) 1985-04-12
EP0041035B2 (fr) 1992-03-18
KR840000468B1 (ko) 1984-04-09
AU7065681A (en) 1981-11-26
EP0041035B1 (fr) 1984-11-21
BR8103108A (pt) 1982-02-09
US4340721B1 (en) 1998-12-01
AU540702B2 (en) 1984-11-29
PT73056B (fr) 1982-07-01
FR2482971A1 (fr) 1981-11-27
MX166409B (es) 1993-01-07
JPH0121167B2 (cg-RX-API-DMAC7.html) 1989-04-20
US4340721A (en) 1982-07-20
JPS5716024A (en) 1982-01-27

Similar Documents

Publication Publication Date Title
US4340721B1 (en) Polyesters for the packaging of comestibles
CA1200948A (en) Polyisophthalates and copolymers thereof having high barrier properties
EP1433817B1 (en) Polyester compositions and processes for producing biaxially stretched polyester bottles
US20020010285A1 (en) Novel polyester and process for preparing polyester
EP0103531B1 (en) Polyethylene isophthalate having reduced cyclic dimer content and process therefor
EP0105826A1 (en) Polyester melt blends having high gas barrier properties
US5241046A (en) Process for treatment of polyethylene terephthalate, polyethylene terephthalate for molding purposes and process for preparation thereof
AR034951A1 (es) Poliesteres de reducida vi, y de reducido tenor de acetaldehido, preformados, y contenedores obtenidos con un polimero de este tipo
TW564251B (en) Polyester resin and production method thereof
EP0867458A2 (en) Polyethylene terephthalate chip
US5270444A (en) Process for treatment of polyethylene terephthalate, polyethylene terephthalate for molding purposes and process for preparation thereof
US3644291A (en) Titanium compounds as polycondensation catalysts in preparation of linear polyesters
MY120797A (en) Method for producing polyalkylene arylates
GB2228940A (en) Polyesters
US3536667A (en) Process of preparing polyethylene terephthalate using glyceryl antimonite as polycondensation catalyst
JP3427202B2 (ja) ポリエステル樹脂組成物
US3489720A (en) Use of metal stannate polycondensation catalysts in preparing polyethylene terephthalate
JP3639055B2 (ja) ポリエステル成形容器
US3509100A (en) Process of preparing linear polyesters using alkali metal trifluorostannite polycondensation catalysts
JP3646141B2 (ja) 生分解性ポリマーの製法
US3438945A (en) Antimony oxysulfide as a polycondensation catalyst
JPH11181257A (ja) ポリエステル樹脂組成物及び該組成物からなる成形品
JPH11130851A (ja) ボトル用ポリエチレン−２，６−ナフタレンジカルボキシレート樹脂及びそれからなる成形品
US3509101A (en) Process of preparing linear polyesters using tantalum alkali metal hexafluoride polycondensation catalysts
EP0823448A1 (en) Process for the preparation of polyhydroxycarboxylic acid