GB1257967A - - Google Patents

Info

Publication number
GB1257967A
GB1257967A GB1257967DA GB1257967A GB 1257967 A GB1257967 A GB 1257967A GB 1257967D A GB1257967D A GB 1257967DA GB 1257967 A GB1257967 A GB 1257967A
Authority
GB
United Kingdom
Prior art keywords
vessel
crystallised
inert gas
pellets
enters
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
Other languages
English (en)
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 filed Critical
Publication of GB1257967A publication Critical patent/GB1257967A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • 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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • B29B13/065—Conditioning or physical treatment of the material to be shaped by drying of powder or pellets
    • 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
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B29B9/065—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion under-water, e.g. underwater pelletizers
    • 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
    • B29B9/00—Making granules
    • B29B9/16—Auxiliary treatment of granules
    • 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
    • C08G63/88—Post-polymerisation treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/08—Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment
    • 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
    • B29B9/00—Making granules
    • B29B9/16—Auxiliary treatment of granules
    • B29B2009/165—Crystallizing granules
    • 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
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
GB1257967D 1968-03-26 1969-02-04 Expired GB1257967A (OSRAM)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71608968A 1968-03-26 1968-03-26

Publications (1)

Publication Number Publication Date
GB1257967A true GB1257967A (OSRAM) 1971-12-22

Family

ID=24876698

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1257967D Expired GB1257967A (OSRAM) 1968-03-26 1969-02-04

Country Status (6)

Country Link
US (1) US3544525A (OSRAM)
BE (1) BE727929A (OSRAM)
DE (1) DE1905677A1 (OSRAM)
ES (1) ES363300A1 (OSRAM)
FR (1) FR2004707A1 (OSRAM)
GB (1) GB1257967A (OSRAM)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340550A (en) 1980-11-24 1982-07-20 E. I. Du Pont De Nemours And Company Oligomer pellets of ethylene terephthalate
GB2205154A (en) * 1987-05-21 1988-11-30 Tioxide Group Plc Drying polymer particles
AT398574B (de) * 1986-11-21 1994-12-27 Cobarr Spa Verfahren zur herstellung von polyesterharzen mit hohem molekulargewicht
WO1996022319A1 (en) * 1995-01-20 1996-07-25 E.I. Du Pont De Nemours And Company Production of poly(ethylene terephthalate)
WO1996022320A1 (en) * 1995-01-20 1996-07-25 E.I. Du Pont De Nemours And Company Process for pellet formation from amorphous polyester

Families Citing this family (79)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080317A (en) * 1970-10-23 1978-03-21 Ciba-Geigy Ag High molecular weight polycondensates from solid phase condensation
US3960817A (en) * 1970-10-23 1976-06-01 Ciba-Geigy Ag Solid phase polyester polycondensation
US3969324A (en) * 1972-01-13 1976-07-13 Monsanto Company Continuous process for drying, crystallizing and solid state polymerizing polyesters
US3949039A (en) * 1972-04-03 1976-04-06 Japan Steel Works, Ltd. Method for pelletizing synthetic resins having a high melting point
DE2559290B2 (de) * 1975-12-31 1979-08-02 Davy International Ag, 6000 Frankfurt Verfahren zur kontinuierlichen Herstellung von hochmolekularem PoIyäthylenterephthalat
FR2355863A1 (fr) * 1976-06-22 1978-01-20 Neu Ets Procede et dispositif pour la cristallisation et le sechage en continu de granules de polymere polyester
DE2642102C3 (de) * 1976-09-18 1984-10-04 Bühler-Miag GmbH, 3300 Braunschweig Vorrichtung zum Kristallisieren von Kunststoffgranulat
US4223128A (en) * 1978-05-16 1980-09-16 Celanese Corporation Process for preparing polyethylene terephthalate useful for beverage containers
US4258178A (en) * 1978-12-01 1981-03-24 Basf Aktiengesellschaft Discharging granular linear polycondensates
DE2941645B1 (de) * 1979-10-15 1981-03-19 Basf Ag, 6700 Ludwigshafen Verfahren und Vorrichtung zum Heissgranulieren niedrigviskoser Polymerschmelzen mit engem Schmelzebereich
US4289871A (en) * 1980-03-27 1981-09-15 Allied Chemical Corporation Method to increase reactor capacity for polycondensation of polyesters
DE3213025C2 (de) * 1982-04-02 1997-06-12 Fischer Karl Ind Gmbh Verfahren zur Nachkondensation von Polykondensaten
CH656391A5 (de) * 1982-04-21 1986-06-30 Inventa Ag Verfahren zur herstellung von hochmolekularen polyestern.
US4379912A (en) * 1982-08-12 1983-04-12 Eastman Kodak Company Method of making polyester prepolymers
US4446303A (en) * 1983-07-26 1984-05-01 Eastman Kodak Company Process for preparing high molecular weight polyesters
DE3522359A1 (de) * 1985-06-22 1987-01-02 Basf Ag Verfahren zum konfektionieren von kristallinen, organischen materialien
ATE96369T1 (de) * 1988-12-23 1993-11-15 Buehler Ag Verfahren und vorrichtung zum kontinuierlichen kristallisieren von polyestermaterial.
DE4200789A1 (de) 1991-03-01 1992-09-03 Bayer Ag Verfahren zur nachkristallisation von teilkristallinen thermoplasten
US5408035A (en) * 1991-10-16 1995-04-18 Shell Oil Company Solid state polymerization
WO1994001484A1 (de) * 1992-07-06 1994-01-20 Buehler Ag Verfahren zur reduktion des gelbwertes von nachkondensiertem polyestergranulat
DE4314162C1 (de) * 1993-04-29 1994-04-28 Rieter Automatik Gmbh Verfahren zur gleichzeitigen Trocknung und Kristallisation von kristallisationsfähigem thermoplastischem Kunststoff
US5391355A (en) * 1993-07-21 1995-02-21 Eastman Chemical Company Vessel for the treatment of particulate materials
IT1271073B (it) * 1994-11-21 1997-05-26 M & G Ricerche Spa Procedimento per la cristallizzazione di resine poliestere
US5714262A (en) * 1995-12-22 1998-02-03 E. I. Du Pont De Nemours And Company Production of poly(ethylene terephthalate)
US5510454A (en) * 1995-01-20 1996-04-23 E. I. Du Pont De Nemours And Company Production of poly(ethylene terephthalate)
US5830982A (en) * 1995-01-20 1998-11-03 E. I. Du Pont De Nemours And Company Production of poly (ethylene terephthalate)
IT1283166B1 (it) 1996-07-18 1998-04-07 Sinco Eng Spa Procedimento perfezionato per la produzione di resine poliestere
IT1283644B1 (it) * 1996-08-01 1998-04-23 Sinco Eng Spa Procedimento perfezionato per la produzione di resine poliestere
DE19849485B9 (de) * 1998-10-27 2006-09-14 Uhde Gmbh Verfahren und Anlage zum Herstellen von Granulat aus polyfunktionellen Carbonsäuren und Alkoholen, insbesondere PET-Granulat
FR2786494B1 (fr) * 1998-11-27 2001-01-05 Tergal Fibres Procede de fabrication de copolyesters poly(ethylene terephtalate)-poly(ethylene isophtalate)
DE19902458A1 (de) * 1999-01-22 2000-07-27 Buehler Ag Vorrichtung und Verfahren zum Behandeln von Kunststoffmaterial
WO2000046004A1 (en) * 1999-02-04 2000-08-10 Bühler AG Process for upgrading plastic material
DE19938583A1 (de) * 1999-08-18 2001-02-22 Buehler Ag Verfahren und Vorrichtung zur Herstellung von kristallisationsfähigem Kunststoffmaterial
DE10042476A1 (de) * 2000-08-29 2002-03-28 Tessag Ind Anlagen Gmbh Verfahren und Vorrichtung zum Herstellen kugelförmiger Partikel aus einer Polymerschmelze
US6451966B1 (en) 2001-08-10 2002-09-17 E. I. Du Pont De Nemours And Company Method for increasing solid state polymerization rate
AT410942B (de) * 2001-10-29 2003-08-25 Fellinger Markus Verfahren und vorrichtung zur erhöhung der grenzviskosität von polyester
WO2004033174A1 (de) * 2002-10-04 2004-04-22 Kreyenborg Verwaltungen Und Beteiligungen Gmbh & Co. Kg Verfahren zur granulierung von kunststoffen
US20050167876A1 (en) * 2002-10-04 2005-08-04 Jan-Udo Kreyenborg Method for granulating plastics
ATE552291T1 (de) * 2003-06-12 2012-04-15 Basell Poliolefine Srl Nachbehandlung für polymerkörnchen
EP1522295A3 (en) * 2003-10-08 2005-04-20 Pride Mobility Products, Corporation Active anti-tip system for power wheelchairs
DE502004000842D1 (de) * 2003-10-17 2006-08-03 Bkg Bruckmann & Kreyenborg Granuliertechnik Gmbh Verfahren zur thermischen behandlung von polyesterpellets
US7157032B2 (en) * 2003-11-21 2007-01-02 Gala Industries, Inc. Method and apparatus for making crystalline PET pellets
DE202004002870U1 (de) * 2004-02-25 2004-05-19 Bauerfeind Ag Einlegesohle
DE102004015515A1 (de) * 2004-03-28 2004-09-16 Zimmer Ag Verfahren zur Herstellung von hochkondensiertem Polyestergranulat
EP1671773A1 (en) * 2004-12-20 2006-06-21 Total Petrochemicals Research Feluy Pellet treatment unit
WO2006127698A2 (en) * 2005-05-26 2006-11-30 Gala Industries, Inc. Method and apparatus for making crystalline polymeric pellets and granules
US9032641B2 (en) 2005-05-26 2015-05-19 Gala Industries, Inc. Method and apparatus for making crystalline polymeric pellets and granules
DE102005026354A1 (de) * 2005-06-01 2006-12-07 Bkg Bruckmann & Kreyenborg Granuliertechnik Gmbh Verfahren zur thermischen Behandlung von Polyesterpellets, um eine Teilkristallisation zu erreichen
WO2007052294A2 (en) * 2005-08-22 2007-05-10 Reliance Industries Ltd. An improved process for the production of slow crystallizing polyester resin
TWI440658B (zh) * 2005-08-31 2014-06-11 Gala Inc 用於水中粒化具減低含水量的聚合體生物材料複合物之方法及裝置
US20070149756A1 (en) * 2005-12-26 2007-06-28 Futura Polyesters Limited Compositions and methods of manufacturing polytrimethylene naphthalate
US20070265429A1 (en) * 2006-05-10 2007-11-15 Hudson Andrew S Use of a vibratory spiral elevator for crystallizing and/or drying of plastic pellets
US7790840B2 (en) * 2006-05-24 2010-09-07 Eastman Chemical Company Crystallizing conveyor
US7638593B2 (en) * 2006-05-24 2009-12-29 Eastman Chemical Company Crystallizer temperature control via fluid control
US7638596B2 (en) * 2006-05-24 2009-12-29 Eastman Chemical Company Crystallizer temperature control via jacketing/insulation
DE102007027543A1 (de) * 2006-11-27 2008-05-29 Bühler AG Stranggranulationsverfahren und -vorrichtung sowie daraus hergestellte Granulate
DE102006058642A1 (de) * 2006-12-11 2008-06-12 Bühler AG Verfahren zur Herstellung homogen kristallisierter Polykondensatgranulate
DE102006058510A1 (de) * 2006-12-12 2008-06-19 Bühler AG Verfahren und Vorrichtung zur Herstellung und Behandlung von Granulatkörnern
DE102007040135A1 (de) * 2007-08-24 2009-02-26 Bkg Bruckmann & Kreyenborg Granuliertechnik Gmbh Verfahren zur Herstellung von Polyester-Granulaten aus hochviskosen Polyester-Schmelzen sowie Vorrichtung zur Herstellung der Polyester-Granulate
DE102007055242A1 (de) 2007-11-16 2009-05-20 Bühler AG Verfahren zur Kristallisation von kristallisierbaren Polymeren mit hoher Klebeneigung
DE102008062480A1 (de) * 2008-12-16 2010-06-17 Automatik Plastics Machinery Gmbh Verfahren zum Granulieren von Kunststoff mit hoher Erweichungstemperatur
AT508252B1 (de) 2009-12-28 2010-12-15 Erema Verfahren und vorrichtung zur herstellung von teilkristallinem polymermaterial
US20110245452A1 (en) * 2010-03-31 2011-10-06 Uop Llc Integrated Underwater Melt Cutting, Solid-State Polymerization Process
US20110256331A1 (en) 2010-04-14 2011-10-20 Dak Americas Llc Ultra-high iv polyester for extrusion blow molding and method for its production
ITTV20110050A1 (it) * 2011-04-13 2012-10-14 Smc Technology Srl Apparecchiatura essiccatore, deumidificatore, a sviluppo verticale del tipo a microonde per l essiccazione rapida e continua di materiale plastico in granuli, pellet o scaglie per l alimentazione d un impianto di stampaggio ad iniezione od estrusione
EP2570247B1 (de) 2011-09-19 2018-03-28 Uhde Inventa-Fischer GmbH Trocknungs-/Entgasungsvorrichtung sowie Vorrichtung und Verfahren zur direkten Herstellung von Formkörpern aus Polyesterschmelzen
PL2712881T3 (pl) 2012-09-26 2015-10-30 Polymetrix Ag Sposób i urządzenie do bezpośredniej krystalizacji polimerów w atmosferze gazu obojętnego
US10745517B2 (en) 2012-09-26 2020-08-18 Polymetrix Ag Process and apparatus for direct crystallization of polycondensates
SI2749679T1 (sl) * 2012-12-28 2017-07-31 Omya International Ag CaCO3 V POLIESTRU ZA NETKANINE IN VLAKNA
US10393455B2 (en) 2013-07-22 2019-08-27 Ineos Europe Ag Method of cleaning a heat exchanger
CN107107388B (zh) * 2014-12-18 2021-03-19 陶氏环球技术有限责任公司 用于处理低粘度聚合物的系统和方法
DE102015220887A1 (de) * 2015-10-26 2017-04-27 Coperion Gmbh Verfahren und Vorrichtung zum Trocknen von Kunststoff-Granulat
CN108602961B (zh) 2016-06-21 2021-09-07 环球油品公司 用于结晶和提高聚合物粒子的分子量的方法和装置
US11298853B2 (en) 2016-06-21 2022-04-12 Uop Llc Processes and apparatuses for conditioning polymer particles for an SSP reactor
EA037788B1 (ru) * 2016-08-17 2021-05-21 Коперион Гмбх Способ и устройство для производства окрашенного и неокрашенного расплава пластика
DE202016105613U1 (de) 2016-10-07 2018-01-09 Erwin Müller GmbH Aufnahme für eine Toilettenpapierrolle
EP4257629A3 (de) 2017-02-17 2024-01-10 Polymetrix AG Verfahren und vorrichtung zur direktkristallisation von polykondensaten
KR102647116B1 (ko) * 2017-12-27 2024-03-13 베르살리스 에스.피.에이. 과립형 팽창성 중합체의 연속 대량 생산을 위한 플랜트에서 과도현상을 관리하기 위한 회로 및 방법
EP3650186B1 (de) 2018-11-08 2023-07-19 Polymetrix AG Verfahren und vorrichtung zur direktkristallisation von polykondensaten

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850764A (en) * 1953-09-01 1958-09-09 Ici Ltd Process and apparatus for converting thermoplastic material to granular form
BE592181A (OSRAM) * 1955-12-22
US3075952A (en) * 1959-01-21 1963-01-29 Eastman Kodak Co Solid phase process for linear superpolyesters
US2975483A (en) * 1959-02-19 1961-03-21 Du Pont Process for producing polymeric pellets by cutting surface cooled strands
GB1066162A (en) * 1965-04-08 1967-04-19 Ici Ltd Poly(ethylene terephthalate)
US3405098A (en) * 1965-10-29 1968-10-08 Du Pont Process for preparing high viscosity linear condensation polyesters from partially polymerized glycol terephthalates
US3342782A (en) * 1967-01-30 1967-09-19 Eastman Kodak Co Polyester prepolymers and processes for their manufacture

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340550A (en) 1980-11-24 1982-07-20 E. I. Du Pont De Nemours And Company Oligomer pellets of ethylene terephthalate
AT398574B (de) * 1986-11-21 1994-12-27 Cobarr Spa Verfahren zur herstellung von polyesterharzen mit hohem molekulargewicht
GB2205154A (en) * 1987-05-21 1988-11-30 Tioxide Group Plc Drying polymer particles
US4974338A (en) * 1987-05-21 1990-12-04 Tioxide Group, Plc Drying process
GB2205154B (en) * 1987-05-21 1991-03-13 Tioxide Group Plc Drying process
WO1996022319A1 (en) * 1995-01-20 1996-07-25 E.I. Du Pont De Nemours And Company Production of poly(ethylene terephthalate)
WO1996022320A1 (en) * 1995-01-20 1996-07-25 E.I. Du Pont De Nemours And Company Process for pellet formation from amorphous polyester
AU710116B2 (en) * 1995-01-20 1999-09-16 Invista Technologies S.A.R.L. Production of poly(ethylene terephthalate)
AU712942B2 (en) * 1995-01-20 1999-11-18 E.I. Du Pont De Nemours And Company Process for pellet formation from amorphous polyester
CN1075082C (zh) * 1995-01-20 2001-11-21 纳幕尔杜邦公司 从无定形聚酯形成粒料的工艺
CN1113075C (zh) * 1995-01-20 2003-07-02 纳幕尔杜邦公司 聚对苯二甲酸乙二醇酯的生产

Also Published As

Publication number Publication date
FR2004707A1 (OSRAM) 1969-11-28
DE1905677A1 (de) 1969-10-09
ES363300A1 (es) 1970-12-16
BE727929A (OSRAM) 1969-08-05
US3544525A (en) 1970-12-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees