MX9400237A - Lixiviacion por conveccion de peliculas de polibenzazol. - Google Patents

Lixiviacion por conveccion de peliculas de polibenzazol.

Info

Publication number
MX9400237A
MX9400237A MX9400237A MX9400237A MX9400237A MX 9400237 A MX9400237 A MX 9400237A MX 9400237 A MX9400237 A MX 9400237A MX 9400237 A MX9400237 A MX 9400237A MX 9400237 A MX9400237 A MX 9400237A
Authority
MX
Mexico
Prior art keywords
leaching
convection
polybenzazole
films
polybenzazole films
Prior art date
Application number
MX9400237A
Other languages
English (en)
Inventor
Peter E Pierini
Lalitha Reddy
William E Rochefort
Ming-Biann Liu
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of MX9400237A publication Critical patent/MX9400237A/es

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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/0009—After-treatment of articles without altering their shape; Apparatus therefor using liquids, e.g. solvents, swelling agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, 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
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08J2379/06—Polyhydrazides; Polytriazoles; Polyamino-triazoles; Polyoxadiazoles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Abstract

Las películas a partir de adiciones de polibenzazol, se pueden lixiviar rápidamente para remover el ácido polifosfórico y otros solventes residuales, pasando un fluido de lixiviación, tal como un vapor, a través de los poros de la película húmeda, nunca secada. El procedimiento puede alcanzar niveles de fósforo residual aceptables (de 1500 a 2500 ppm) en tan poco como 2 ó 3 minutos.
MX9400237A 1993-01-05 1994-01-04 Lixiviacion por conveccion de peliculas de polibenzazol. MX9400237A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/000,848 US5292470A (en) 1993-01-05 1993-01-05 Convective leaching of polybenzazole films

Publications (1)

Publication Number Publication Date
MX9400237A true MX9400237A (es) 1994-08-31

Family

ID=21693266

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9400237A MX9400237A (es) 1993-01-05 1994-01-04 Lixiviacion por conveccion de peliculas de polibenzazol.

Country Status (3)

Country Link
US (1) US5292470A (es)
MX (1) MX9400237A (es)
WO (1) WO1994016001A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994025256A1 (en) * 1993-04-30 1994-11-10 The Dow Chemical Company Three-dimensional polybenzazole structures
US5393478A (en) * 1993-08-20 1995-02-28 The Dow Chemical Company Process for coagulation and washing of polybenzazole fibers
US6588099B2 (en) * 2001-01-22 2003-07-08 Sankyo Kasei Kabushiki Kaisha Process for manufacturing molded circuit board

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB393011A (en) * 1932-01-18 1933-06-01 Ig Farbenindustrie Ag Manufacture of new thio-derivatives
US3584104A (en) * 1969-04-30 1971-06-08 Celanese Corp Production of polybenzimidazole fibers
US3760054A (en) * 1969-09-08 1973-09-18 Du Pont Process for preparing porous aromatic polyamide fibers
US3699038A (en) * 1970-04-22 1972-10-17 Celanese Corp Production of improved semipermeable polybenzimidazole membranes
US4263245A (en) * 1979-04-23 1981-04-21 Celanese Corporation Process for producing high-strength, ultralow denier polybenzimidazole (PBI) filaments
US4377546A (en) * 1981-08-11 1983-03-22 The United States Of America As Represented By The Secretary Of The Air Force Process for producing aromatic heterocyclic polymer alloys
US4606875A (en) * 1983-04-11 1986-08-19 Celanese Corporation Process for preparing shaped articles of rigid rod heterocyclic liquid crystalline polymers
JPS6128530A (ja) * 1984-07-19 1986-02-08 Asahi Chem Ind Co Ltd 複素環芳香族ポリマーからなるフイルムおよびその製法
JPS6253339A (ja) * 1985-09-03 1987-03-09 Asahi Chem Ind Co Ltd 複素環芳香族ポリマ−からなるフイルムの製法
US4845150A (en) * 1985-09-26 1989-07-04 Foster-Miller Inc. Interpenetrated polymer films
US4973442A (en) * 1985-09-26 1990-11-27 Foster Miller Inc. Forming biaxially oriented ordered polymer films
US4717619A (en) * 1985-10-29 1988-01-05 Hoechst Celanese Corporation Process for the production of molded polybenzimidazole articles and the resultant articles
US5102601A (en) * 1986-08-25 1992-04-07 Farris Richard J Process for fabricating novel compostes based on reinforcement with microfibrillar networks of rigid-rod polymers
JPS6374612A (ja) * 1986-09-19 1988-04-05 Asahi Chem Ind Co Ltd フイルムの製法
JPS63210138A (ja) * 1987-02-27 1988-08-31 Asahi Chem Ind Co Ltd 複素環芳香族ポリマ−よりなるフイルムおよびその製法
US4927909A (en) * 1987-09-18 1990-05-22 Hoechst Celanese Corp. Fabrication of high performance polybenzimidazole films
US4898924A (en) * 1989-01-11 1990-02-06 Hoechst Celanese Corporation Process for the production of biaxially oriented rigid rod heterocyclic liquid crystalline polymer films
US4977223A (en) * 1989-02-02 1990-12-11 The United State Of America As Represented By The Secretary Of The Air Force Thermoset rigid rod molecular composite system
US5164131A (en) * 1990-09-19 1992-11-17 The Dow Chemical Company Methods for synthesizing pulps and short fibers containing polybenzazole polymers
US5302334A (en) * 1992-05-21 1994-04-12 The Dow Chemical Company Process for coagulating and washing lyotropic polybenzazole films

Also Published As

Publication number Publication date
WO1994016001A1 (en) 1994-07-21
US5292470A (en) 1994-03-08

Similar Documents

Publication Publication Date Title
JPS5416378A (en) Polysulfone semipermeable membrane
WO2003053603A3 (en) Remediation of mercury contaminated soil
DK1062301T3 (da) Totrinshydrobearbejdning med damp-væske-kontakt i mellemtrin til dampfjernelse af heteroatom
BRPI0309662A2 (pt) equipamento de secagem por congelamento
BRPI0401650A (pt) Extração rápida de rna de células e tecidos
AR026302A1 (es) Un metodo para estabilizar solventes siliconados para la limpieza en seco, un adsorbente y un proceso de limpieza en seco.
PE27097A1 (es) Metodo para recuperar un extractante
MX9400237A (es) Lixiviacion por conveccion de peliculas de polibenzazol.
ATE268745T1 (de) Verfahren und vorrichtung zur nutzung der bei der herstellung von 1,2-dichlorethan anfallenden reaktionswärme
ATE273052T1 (de) Zusammensetzung enthaltend folsäure und zink für das verbessern der semen qualität
ES2075187T3 (es) Extractos de equinaceas, un procedimiento para su preparacion y formulaciones que los contienen.
HUP0200331A2 (en) Oil treatment process
PE103799A1 (es) Procedimiento de purificacion de mesilato de alatrofloxacino
HUP0500329A2 (hu) Eljárás karbapenemvegyületek előállítására
ES2067135T3 (es) Procedimiento para la depuracion de gas de escape.
WO2000038660A3 (de) Verwendung von bisphosphonaten zur prophylaxe und zur behandlung von infektiösen prozessen
ES2183092T3 (es) Proceso para la preparacion de iohexol cristalino purificado.
ATE393635T1 (de) Vorrichtung zum sterilisieren von zu befüllenden behältern
MX9400238A (es) Procedimiento mejorado para la coagulacion, el lavado y el lixiviado de articulos formados de polibenzazol.
BR9907806A (pt) Processo para revestir pelo menos uma superfìcie de um substrato feito de vidro orgânico, e, solução de tratamento aquosa
ES2135224T3 (es) Metodo para la descontaminacion microbiana de plaquetas sanguineas.
BR9811606A (pt) Método para remover pelo menos uma porção de biguanida presente numa fonte aquosa
AR053562A1 (es) Proceso para la preparacion de la forma i cristalina de olanzapina
DK164171C (da) Hidtil ukendte phosphonamidothioatforbindelser; fremgangsmaade til fremstilling af saadanne forbindelser; et plantebeskyttelsespraeparat indeholdende en saadan forb.; en fremg. til bekaempelse af insekter,mider og/eller nematoder paa et sted ved behandling af stedet med en saadan forb. eller et saadant praep.; og anven.af en saadan for. eller et saadant praep. som insekticid, miticid og/eller nematicid
ES2101474T3 (es) Procedimiento y dispositivo para la separacion continua de los componentes de un baño de grabado.