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AR032364A1 - Composicion adecuada para la catalisis en un procedimiento para la fabricacion de poliester y dicho poliester - Google Patents

Composicion adecuada para la catalisis en un procedimiento para la fabricacion de poliester y dicho poliester

Info

Publication number
AR032364A1
AR032364A1 ARP010104363A ARP010104363A AR032364A1 AR 032364 A1 AR032364 A1 AR 032364A1 AR P010104363 A ARP010104363 A AR P010104363A AR P010104363 A ARP010104363 A AR P010104363A AR 032364 A1 AR032364 A1 AR 032364A1
Authority
AR
Argentina
Prior art keywords
polyester
manufacture
carboxyl
component
groups
Prior art date
Application number
ARP010104363A
Other languages
English (en)
Inventor
B Otto
E Seidl
T Steinbrecher
Original Assignee
Zimmer Ag
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 Zimmer Ag filed Critical Zimmer Ag
Publication of AR032364A1 publication Critical patent/AR032364A1/es

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
    • B01J31/0255—Phosphorus containing compounds
    • B01J31/0269—Phosphorus containing compounds on mineral substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/0234—Nitrogen-, phosphorus-, arsenic- or antimony-containing compounds
    • B01J31/0255—Phosphorus containing compounds
    • B01J31/0257—Phosphorus acids or phosphorus acid esters
    • B01J31/0259—Phosphorus acids or phosphorus acid esters comprising phosphorous acid (-ester) groups ((RO)P(OR')2) or the isomeric phosphonic acid (-ester) groups (R(R'O)2P=O), i.e. R= C, R'= C, H
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/04—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts
    • 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
    • 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
    • C08G63/84—Boron, aluminium, gallium, indium, thallium, rare-earth metals, or compounds thereof
    • 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
    • C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/08—Silica
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/18—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
    • B01J35/45—Nanoparticles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/613—10-100 m2/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/617—500-1000 m2/g
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

Una composicion adecuada para la catálisis en un procedimiento para la fabricacion de poliéster, que comprende como componente I una substancia portadora en la cual los compuestos de metal catalíticamente eficaces son adsorbidos, en donde dicho componente I puede contener también un agente de suspension elegido entre un alcanol y/o diol de alcano; y como componente II un compuesto de ácido fosfonico de la formula (1), en donde: a) dos de los grupos R1, R2 y R3 son -H y el tercer grupo es -H o alquilo C1-10, cicloalquilo o -arilo y R es alquilen C1-10-carboxilo, -cicloalquilen-carboxilo o -arilén-carboxilo, con lo cual el grupo carboxilo es adyacente a R1; y/o b) R es O, por lo cual R1, R2 y R3 son grupos glicol tris-trialquileno. La sustancia portadora se selecciona de carbono activo, tierra de diatomeas, zeolitas, silicatos sintéticos, silicatos naturales, oxidos de silicio, hidratos de silicio, fulerenos o polímeros reticulados con un tamano de grano medio d de 0,05 a 2,0 mm y un área específica de las partículas, segun el método BET, > 50 m2/g. El componente catalíticamente eficaz puede contener por lo menos uno de los compuestos de metal Ti, Zr, Sb, Ge, Sn y Al, y el metal está ionicamente presente en una proporcion en peso de sustancia portadora respecto del metal es 1:50 a 50:1. Un procedimiento para la fabricacion de poliéster que se obtiene por la esterificacion o transesterificacion, precondensacion y policondensacion, que incluye las siguientes etapas: proveer una mezcla de la reaccion de un alcohol polivalente y un ácido carboxílico que contiene por lo menos dos grupos carboxilo o sus ésteres, y el agregado de catalizadores, en donde los dos componentes I y II son agregados a la mezcla de reaccion como catalizadores. Poliéster que puede obtenerse de acuerdo con el procedimiento descripto y su uso para la fabricacion de botellas, películas, láminas, materiales de fibras y plásticos técnicos. Uso de la composicion anteriormente descripta como catalizador en la fabricacion de poliéster.
ARP010104363A 2001-05-03 2001-09-14 Composicion adecuada para la catalisis en un procedimiento para la fabricacion de poliester y dicho poliester AR032364A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10121542A DE10121542A1 (de) 2001-05-03 2001-05-03 Zusammensetzung und Verfahren zur Herstellung von Polyester

Publications (1)

Publication Number Publication Date
AR032364A1 true AR032364A1 (es) 2003-11-05

Family

ID=7683509

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP010104363A AR032364A1 (es) 2001-05-03 2001-09-14 Composicion adecuada para la catalisis en un procedimiento para la fabricacion de poliester y dicho poliester

Country Status (6)

Country Link
US (1) US7335410B2 (es)
CN (1) CN100513454C (es)
AR (1) AR032364A1 (es)
DE (1) DE10121542A1 (es)
TW (1) TW583217B (es)
WO (1) WO2002090419A1 (es)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10256084A1 (de) * 2002-11-29 2004-06-17 Crompton Gmbh Katalysatoren für die Herstellung von Polyestern, insbesondere Poly(alkylenterephthalaten), deren Verwendung und Verfahren zu deren Anwendung
EP1482077A1 (en) * 2003-05-21 2004-12-01 Zimmer AG Polyester multi-filament yarns, process for their production and winding and winding device
US7138356B2 (en) * 2004-03-26 2006-11-21 E. I. Du Pont De Nemours And Company Alkoxylated phosphite ester and process therefor
DE102004046771A1 (de) * 2004-09-24 2006-04-06 Zimmer Ag Mischung, Polyesterzusammensetzung, Folie sowie Verfahren zu deren Herstellung
KR101159842B1 (ko) * 2004-12-29 2012-06-25 에스케이케미칼주식회사 폴리에스테르 수지 및 이의 제조방법
US20060287471A1 (en) * 2005-06-16 2006-12-21 Schreiber Benjamin R Accelerated acetaldehyde testing of polymers
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
US7932345B2 (en) 2005-09-16 2011-04-26 Grupo Petrotemex, S.A. De C.V. Aluminum containing polyester polymers having low acetaldehyde generation rates
US7655746B2 (en) * 2005-09-16 2010-02-02 Eastman Chemical Company Phosphorus containing compounds for reducing acetaldehyde in polyesters polymers
US7838596B2 (en) 2005-09-16 2010-11-23 Eastman Chemical Company Late addition to effect compositional modifications in condensation polymers
US9267007B2 (en) * 2005-09-16 2016-02-23 Grupo Petrotemex, S.A. De C.V. Method for addition of additives into a polymer melt
US8431202B2 (en) 2005-09-16 2013-04-30 Grupo Petrotemex, S.A. De C.V. Aluminum/alkaline or alkali/titanium containing polyesters having improved reheat, color and clarity
DE102006020558A1 (de) 2006-05-03 2007-11-08 Lurgi Zimmer Gmbh Katalysator zur Polyesterherstellung, Verwendung des Katalysatoren zur Herstellung von Polyester sowie Polyester, erhalten unter Einsatz des Katalysatoren
US7709593B2 (en) * 2006-07-28 2010-05-04 Eastman Chemical Company Multiple feeds of catalyst metals to a polyester production process
US20080027207A1 (en) * 2006-07-28 2008-01-31 Jason Christopher Jenkins Non-precipitating alkali/alkaline earth metal and aluminum compositions made with mono-ol ether solvents
US7709595B2 (en) * 2006-07-28 2010-05-04 Eastman Chemical Company Non-precipitating alkali/alkaline earth metal and aluminum solutions made with polyhydroxyl ether solvents
US7745368B2 (en) * 2006-07-28 2010-06-29 Eastman Chemical Company Non-precipitating alkali/alkaline earth metal and aluminum compositions made with organic hydroxyacids
US8563677B2 (en) * 2006-12-08 2013-10-22 Grupo Petrotemex, S.A. De C.V. Non-precipitating alkali/alkaline earth metal and aluminum solutions made with diols having at least two primary hydroxyl groups
US8207289B2 (en) 2007-05-23 2012-06-26 Grupo Petrotemex, S.A. De C.V. High molecular weight polyester polymers with reduced acetaldehyde
EP2566902B1 (en) * 2010-05-03 2014-06-11 Arkema France Uv curable encapsulant
JP6625111B2 (ja) * 2016-12-19 2019-12-25 キヤノン株式会社 電子写真用ベルトおよび電子写真画像形成装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD144674A1 (de) * 1979-06-28 1980-10-29 Rema S Barshtein Verfahren zur herstellung der polyestern
JPH04345617A (ja) * 1991-05-24 1992-12-01 Diafoil Co Ltd ポリエステルの製造方法
DE4432839A1 (de) * 1994-09-15 1996-03-21 Zimmer Ag Verfahren zur Einstellung des Trübungsgrades von Ethylenterephthalat-Polymeren
US5789528A (en) * 1995-12-08 1998-08-04 Akzo Nobel Nv Process for the preparation of polyesters and copolyesters
JP3657700B2 (ja) * 1996-06-18 2005-06-08 新日本石油化学株式会社 カサ高性不織布の製造方法
DE19627591A1 (de) * 1996-07-09 1997-01-02 Thueringisches Inst Textil Verfahren zur katalytischen Beschleunigung der Polykondensation von Polyestern mit Silikaten
DE19631069A1 (de) * 1996-08-01 1998-02-05 Zimmer Ag POY-Polyesterfaser für Strecktexturierung und Verfahren zu deren Herstellung
DE19631068B4 (de) * 1996-08-01 2006-06-01 Zimmer Ag Verfahren zur Beschleunigung der Polykondensation von Polyester
DE19638549A1 (de) * 1996-09-20 1998-03-26 Zimmer Ag Zeolith-Katalysator zur Polykondensation von Polyester
US5856424A (en) * 1996-10-16 1999-01-05 Eastman Chemical Company Process for making polyesters containing low concentrations of diethylene glycol
JPH10231357A (ja) * 1997-02-17 1998-09-02 Nippon Ester Co Ltd ポリエステルの製造法
DE19753378A1 (de) * 1997-12-02 1999-06-10 Lurgi Zimmer Ag Verfahren zur Herstellung von Polyestern mit Mischkatalysatoren
DE19908628A1 (de) * 1999-02-27 2000-08-31 Lurgi Zimmer Ag Katalysator, Verfahren zu dessen Herstellung und Verwendung des Katalysators
AU780389B2 (en) * 1999-11-11 2005-03-17 Mitsubishi Chemical Corporation Polyester resin and its production process
JP3209336B1 (ja) * 2000-05-17 2001-09-17 エスケー ケミカルズ カンパニー リミテッド １，４−シクロヘキサンジメタノールが共重合されたポリエステル樹脂の製造方法

Also Published As

Publication number Publication date
WO2002090419A1 (de) 2002-11-14
US20030018160A1 (en) 2003-01-23
DE10121542A1 (de) 2003-02-06
TW583217B (en) 2004-04-11
CN100513454C (zh) 2009-07-15
CN1643031A (zh) 2005-07-20
US7335410B2 (en) 2008-02-26

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