SG11202103540SA - A poymer layered hollow fiber membrane based on poly(2,5-benzimidazole), copolymers and substituted polybenzimidazole - Google Patents

A poymer layered hollow fiber membrane based on poly(2,5-benzimidazole), copolymers and substituted polybenzimidazole

Info

Publication number
SG11202103540SA
SG11202103540SA SG11202103540SA SG11202103540SA SG11202103540SA SG 11202103540S A SG11202103540S A SG 11202103540SA SG 11202103540S A SG11202103540S A SG 11202103540SA SG 11202103540S A SG11202103540S A SG 11202103540SA SG 11202103540S A SG11202103540S A SG 11202103540SA
Authority
SG
Singapore
Prior art keywords
poymer
benzimidazole
copolymers
poly
hollow fiber
Prior art date
Application number
SG11202103540SA
Other languages
English (en)
Inventor
Ulhas Kanhaiyalal Kharul
Harshal Dilip Chaudhari
Nishina Achuthan Shobhana
Nitin Madhukarrao Thorat
Saroj Shivram Gawas
Lavanya Alladi
Shebeeb Hassan Kunjattu
Vipin Kumar
Original Assignee
Council Scient Ind Res
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 Council Scient Ind Res filed Critical Council Scient Ind Res
Publication of SG11202103540SA publication Critical patent/SG11202103540SA/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/228Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081After-treatment of organic or inorganic membranes
    • B01D67/0088Physical treatment with compounds, e.g. swelling, coating or impregnation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08Hollow fibre membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08Hollow fibre membranes
    • B01D69/087Details relating to the spinning process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12Composite membranes; Ultra-thin membranes
    • B01D69/1212Coextruded layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12Composite membranes; Ultra-thin membranes
    • B01D69/1213Laminated layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12Composite membranes; Ultra-thin membranes
    • B01D69/1214Chemically bonded layers, e.g. cross-linking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12Composite membranes; Ultra-thin membranes
    • B01D69/1216Three or more layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/40Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
    • B01D71/42Polymers of nitriles, e.g. polyacrylonitrile
    • B01D71/421Polyacrylonitrile
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/58Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
    • B01D71/62Polycondensates having nitrogen-containing heterocyclic rings in the main chain
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/76Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/76Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
    • B01D71/82Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74 characterised by the presence of specified groups, e.g. introduced by chemical after-treatment
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1046Polyimides containing oxygen in the form of ether bonds in the main chain
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/18Polybenzimidazoles
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04Polysiloxanes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G79/00Macromolecular compounds obtained by reactions forming a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon with or without the latter elements in the main chain of the macromolecule
    • C08G79/08Macromolecular compounds obtained by reactions forming a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon with or without the latter elements in the main chain of the macromolecule a linkage containing boron
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D179/00Coating compositions based on 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 C09D161/00 - C09D177/00
    • C09D179/04Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D179/00Coating compositions based on 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 C09D161/00 - C09D177/00
    • C09D179/04Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C09D179/08Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2256/00Main component in the product gas stream after treatment
    • B01D2256/10Nitrogen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2256/00Main component in the product gas stream after treatment
    • B01D2256/18Noble gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2256/00Main component in the product gas stream after treatment
    • B01D2256/24Hydrocarbons
    • B01D2256/245Methane
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/10Single element gases other than halogens
    • B01D2257/102Nitrogen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/10Single element gases other than halogens
    • B01D2257/11Noble gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/50Carbon oxides
    • B01D2257/504Carbon dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2323/00Details relating to membrane preparation
    • B01D2323/30Cross-linking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2323/00Details relating to membrane preparation
    • B01D2323/36Introduction of specific chemical groups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2323/00Details relating to membrane preparation
    • B01D2323/60Co-casting; Co-extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/02Details relating to pores or porosity of the membranes
    • B01D2325/022Asymmetric membranes
    • B01D2325/0233Asymmetric membranes with clearly distinguishable layers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02CCAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00Capture or disposal of greenhouse gases
    • Y02C20/40Capture or disposal of greenhouse gases of CO2
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/151Reduction of greenhouse gas [GHG] emissions, e.g. CO2

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
  • Artificial Filaments (AREA)
SG11202103540SA 2018-10-20 2019-10-21 A poymer layered hollow fiber membrane based on poly(2,5-benzimidazole), copolymers and substituted polybenzimidazole SG11202103540SA (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201811014986 2018-10-20
PCT/IN2019/050776 WO2020079713A1 (en) 2018-10-20 2019-10-21 A poymer layered hollow fiber membrane based on poly(2,5-benzimidazole), copolymers and substituted polybenzimidazole

Publications (1)

Publication Number Publication Date
SG11202103540SA true SG11202103540SA (en) 2021-05-28

Family

ID=70283732

Family Applications (1)

Application Number Title Priority Date Filing Date
SG11202103540SA SG11202103540SA (en) 2018-10-20 2019-10-21 A poymer layered hollow fiber membrane based on poly(2,5-benzimidazole), copolymers and substituted polybenzimidazole

Country Status (7)

Country Link
US (1) US20210370239A1 (ko)
EP (1) EP3867316A4 (ko)
JP (1) JP7146080B2 (ko)
KR (1) KR102544127B1 (ko)
CN (1) CN113166538B (ko)
SG (1) SG11202103540SA (ko)
WO (1) WO2020079713A1 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11786861B2 (en) * 2020-12-14 2023-10-17 Uop Llc High selectivity polyimide/PES blend hollow fiber membrane for gas separations
WO2023160073A1 (zh) * 2022-02-23 2023-08-31 中国石油化工股份有限公司 中空纤维分离膜及其制备方法及应用

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6623639B2 (en) 1999-03-19 2003-09-23 Bend Research, Inc. Solvent-resistant microporous polybenzimidazole membranes
KR100644856B1 (ko) 2005-03-17 2006-11-24 한국과학기술연구원 연료전지 멤브레인 및 그 제조 방법
WO2008090412A2 (en) 2006-09-11 2008-07-31 Advent Technologies Proton conducting aromatic polyether polymers with pyridinyl side chains for fuel cells
WO2010042602A1 (en) 2008-10-07 2010-04-15 National University Of Singapore Polymer blends and carbonized polymer blends
CN102186565A (zh) * 2008-10-15 2011-09-14 新加坡国立大学 用作水再利用和蛋白质富集的正向渗透膜的具有增强通量的双层中空纤维
EP2539057B1 (en) * 2010-02-26 2017-08-30 Council of Scientific & Industrial Research A process for preparing a porous abpbi [phosphoric acid doped poly (2,5-benzimidazole)]membrane and the use of this membrane
US20110266222A1 (en) * 2010-04-29 2011-11-03 Yan Wang Polybenzimidazole-based membranes for the dehydration of organic liquids via pervaporation
CA2811166C (en) 2010-09-14 2019-10-01 Council Of Scientific & Industrial Research Quarternised polybenzimidazole
WO2015029070A1 (en) * 2013-08-30 2015-03-05 Council Of Scientific And Industrial Research Co-abpbi membranes and process for the preparation thereof
US9987599B2 (en) 2013-11-02 2018-06-05 Council Of Scientific & Industrial Research Asymmetric membranes based on BuPBI

Also Published As

Publication number Publication date
JP2022505389A (ja) 2022-01-14
WO2020079713A1 (en) 2020-04-23
EP3867316A4 (en) 2022-07-20
EP3867316A1 (en) 2021-08-25
US20210370239A1 (en) 2021-12-02
CN113166538A (zh) 2021-07-23
KR102544127B1 (ko) 2023-06-15
JP7146080B2 (ja) 2022-10-03
CN113166538B (zh) 2024-02-06
KR20210076966A (ko) 2021-06-24

Similar Documents

Publication Publication Date Title
SG11202103540SA (en) A poymer layered hollow fiber membrane based on poly(2,5-benzimidazole), copolymers and substituted polybenzimidazole
WO2006076016A3 (en) Conducting polymers
WO2008109098A3 (en) Medical devices having improved performance
WO2010107545A3 (en) Polymeric/inorganic composite materials for use in medical devices
MY168710A (en) Polyesters and fibers made therefrom
MX2020000970A (es) Materiales forosos a partir de arquitecturas de copolímeros en bloque complejas.
CO2019013129A2 (es) Indicadores de privacidad para controlar peticiones de autenticación
EP3885485A4 (en) KNITWEAR AND METHOD OF PRODUCTION, DEVICE USED AND CLOTHING MADE THEREOF
DE60329699D1 (de) Copolymer mit einer kontrollierten architektur enthaltendes antifaltenmittel für textilien
EP3904443A4 (en) LIGHT-RESISTANT, HEAT-RESISTANT AND DURABLE UV ABSORBENT
WO2018041731A3 (en) Multilayer hollow fibre membranes comprising amphiphilic copolymers
WO2020072115A8 (en) Carbon dioxide removal using sequestration materials that include salts in molten form, and related systems and methods
WO2019006398A3 (en) MONOMERS OF N-OXIDE AND ECTOIN, POLYMERS, COMPOSITIONS THEREOF, AND RELATED METHODS
EP3608011A4 (en) SPIRAL TYPE GAS SEPARATION MEMBRANE ELEMENT, GAS SEPARATION MEMBRANE MODULE AND GAS SEPARATION DEVICE
EP3836222A3 (en) Display device, mask assembly, and apparatus for manufacturing display device
TW200635845A (en) MEMS switches with deforming membranes
IL289865A (en) Anion conducting polymeric membrane
FR2829946B1 (fr) Nouvelles membranes inorganiques de nanofiltration
WO2021101659A3 (en) High-performance ladder polymers for membrane gas separation
DE60014713D1 (de) Membranen aus pfropfpolymeren und ionenaustausch-membranen daraus
EP3967389A4 (en) EXTERNAL PRESSURE HOLLOW FIBER MEMBRANE COMPONENT, FILTRATION MEMBRANE COMPONENT AND MEMBRANE FILTRATION MODULE
EP4011827A4 (en) POLY/MONO-HYPOPHOSPHITE HYDROGEN DIPHOSPHITE COMPOUND, PREPARATION AND USE THEREOF
GB202100274D0 (en) Copolymers, their preparation and use
EP3640286A4 (en) AROMATIC POLY (AMIDE-IMIDE) COPOLYMER FILM AND PROCESS FOR PRODUCING THE SAME
ITMI20001419A0 (it) Copolimeri termoprocessbili del tfe.