AR003076A1 - Proceso para remover acetaldehido de poliester y articulos polimericos formados, extruidos o moldeados que tienen bajo contenido de acetaldehidoproducidos por dicho proceso. - Google Patents

Proceso para remover acetaldehido de poliester y articulos polimericos formados, extruidos o moldeados que tienen bajo contenido de acetaldehidoproducidos por dicho proceso.

Info

Publication number
AR003076A1
AR003076A1 ARP960103796A AR10379696A AR003076A1 AR 003076 A1 AR003076 A1 AR 003076A1 AR P960103796 A ARP960103796 A AR P960103796A AR 10379696 A AR10379696 A AR 10379696A AR 003076 A1 AR003076 A1 AR 003076A1
Authority
AR
Argentina
Prior art keywords
acetaldehyde
polyester
extruder
extruded
molded
Prior art date
Application number
ARP960103796A
Other languages
English (en)
Original Assignee
Eastman Chem 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 Eastman Chem Co filed Critical Eastman Chem Co
Publication of AR003076A1 publication Critical patent/AR003076A1/es

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
    • C08G63/88—Post-polymerisation treatment
    • C08G63/90—Purification; Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/84—Venting or degassing ; Removing liquids, e.g. by evaporating components
    • B29B7/845—Venting, degassing or removing evaporated components in devices with rotary stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/86—Component parts, details or accessories; Auxiliary operations for working at sub- or superatmospheric pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/765—Venting, drying means; Degassing means in the extruder apparatus
    • B29C48/766—Venting, drying means; Degassing means in the extruder apparatus in screw extruders
    • B29C48/767—Venting, drying means; Degassing means in the extruder apparatus in screw extruders through a degassing opening of a barrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0002—Condition, form or state of moulded material or of the material to be shaped monomers or prepolymers

Abstract

Un proceso para remover acetaldehido de poliéster caracterizado porque comprende las etapas de: a) transportar poliéster fundido a un transportadorsin fin con ventilación que tiene una zona de compresión de polímeros; b) rotar el tornillo sinfi n de dicho transportador para comprimir y transportar através del extrusor el polímero fundido durante un tiempo de menos de 15 minutos y a una temperatura de menos de 300°C; c) simultáneamente con la etapab), hacer fluir un agente depurga de ntro y fuera de dicho extrusor para de este modo remover impurezas volátiles a partir de dicho poliéster fundido yevitar el apreciable incremento gradual de acetaldehido; y d) transportar la fusión del polímero desvolatizado hasta undispositi vo formador en donde seforma un artículo de manufactura. Preferentemente, el transportador es un extrusor. Este proceso se utiliza preferentemente para producir poliésteresque tienen bajos niveles de acetaldehido. De preferencia elpoliéster es el producto resultante de la polimerización de un glicol, el cual espreferentemente por lo menos 80% en moles de etilenglicol y un ácido dicarboxílico que es preferentemente por lo menos 80% en moles de ácidotereftálico.También se da n a conocer artículos poliméricos formados, extruidos o moldeados que tienen bajo contenido de acetaldehido producidos por dichoproceso.
ARP960103796A 1995-08-01 1996-07-29 Proceso para remover acetaldehido de poliester y articulos polimericos formados, extruidos o moldeados que tienen bajo contenido de acetaldehidoproducidos por dicho proceso. AR003076A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/624,028 US5597891A (en) 1995-08-01 1995-08-01 Process for producing polyester articles having low acetaldehyde content

Publications (1)

Publication Number Publication Date
AR003076A1 true AR003076A1 (es) 1998-05-27

Family

ID=24500342

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP960103796A AR003076A1 (es) 1995-08-01 1996-07-29 Proceso para remover acetaldehido de poliester y articulos polimericos formados, extruidos o moldeados que tienen bajo contenido de acetaldehidoproducidos por dicho proceso.

Country Status (16)

Country Link
US (1) US5597891A (es)
EP (1) EP0842211B1 (es)
JP (1) JP3547761B2 (es)
CN (1) CN1080274C (es)
AR (1) AR003076A1 (es)
AT (1) ATE217892T1 (es)
AU (1) AU6684996A (es)
BR (1) BR9609746A (es)
CA (1) CA2227609A1 (es)
CO (1) CO4560426A1 (es)
DE (1) DE69621340T2 (es)
ES (1) ES2177795T3 (es)
MX (1) MX9800876A (es)
MY (1) MY132235A (es)
WO (1) WO1997005187A1 (es)
ZA (1) ZA966251B (es)

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US5968429A (en) * 1997-03-20 1999-10-19 Eastman Chemical Company Apparatus and method for molding of polyester articles directly from a melt
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MXPA06003846A (es) * 2003-10-10 2006-07-03 Asahi Kasei Chemicals Corp Procedimiento para producir tereftalato de polialquileno, procedimiento para producir moldeado de tereftalato de polialquileno y moldeado de tereftalato de polialquileno.
DE10348425B4 (de) * 2003-10-14 2008-07-24 Bühler AG Verfahren zur Herstellung eines Profils aus einem Polykondensat
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US7459113B2 (en) * 2004-03-08 2008-12-02 Eastman Chemical Company Process of making a container from polyester polymer particles having a small surface to center intrinsic-viscosity gradient
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US7541407B2 (en) * 2004-05-27 2009-06-02 Eastman Chemical Company Process for adding methine UV light absorbers to PET prepared by direct esterification
US20050267283A1 (en) * 2004-05-27 2005-12-01 Weaver Max A Process for adding nitrogen containing methine light absorbers to poly(ethylene terephthalate)
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Also Published As

Publication number Publication date
CN1198756A (zh) 1998-11-11
ZA966251B (en) 1997-02-11
JPH11511187A (ja) 1999-09-28
ES2177795T3 (es) 2002-12-16
MX9800876A (es) 1998-04-30
EP0842211A1 (en) 1998-05-20
CA2227609A1 (en) 1997-02-13
EP0842211B1 (en) 2002-05-22
DE69621340T2 (de) 2002-11-14
BR9609746A (pt) 1999-03-30
ATE217892T1 (de) 2002-06-15
MY132235A (en) 2007-09-28
CN1080274C (zh) 2002-03-06
JP3547761B2 (ja) 2004-07-28
CO4560426A1 (es) 1998-02-10
WO1997005187A1 (en) 1997-02-13
DE69621340D1 (de) 2002-06-27
US5597891A (en) 1997-01-28
AU6684996A (en) 1997-02-26

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