Pall Corporation

Pall Corportaion

Khaled Abdel-Hakim Helmy Aamer

Hassan Ait-Haddou

Selina Shi

Jian Qiu

Amarnauth Singh

Marcin Stasiak

David Lukas Grzenia

Frank Onyemauwa

Frank Okezie Onyemauwa

Marcin Lech Stasiak

Disclosed are polymers suitable for hydrophilically modifying the surface of porous fluoropolymer supports, for example, a copolymer of the formula:  Also disclosed are a method of preparing the polymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic fluoropolymer porous membranes prepared from the polymers, and a method of filtering fluids through the porous membranes.

Hydrophilically modified fluorinated membrane (I)

Disclosed is a porous membrane comprising a porous polytetrafluoroethylene (PTFE) substrate and a coating comprising a copolymer of formula (I):

Porous PTFE membranes for metal removal

Disclosed are self-assembling diblock copolymers of the formula (I): wherein R-R, n, and m are as described herein, which find use in preparing self-assembled structures and porous membranes. Embodiments of the self-assembled structures contain the diblock copolymer in a cylindrical morphology. Also disclosed is a method of preparing such copolymers.

Self-assembling polymers&#x2014;V

Disclosed are copolymers which are useful in hydrophilically modifying porous fluoropolymer supports. An example of the copolymers is: Also disclosed are a method of preparing such copolymers, a method of modifying porous fluoropolymer surfaces, and hydrophilic fluoropolymer porous membranes prepared therefrom. Also disclosed is a method of filtering fluids by the use of the hydrophilic fluoropolymer porous membranes.

Hydrophilically modified fluorinated membrane (II)

Disclosed are copolymers suitable for hydrophilically modifying the surface of fluoropolymer membranes. An example of the copolymers is: Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, hydrophilic porous fluoropolymer membranes prepared from the copolymers, and a method of filtering fluids by the use of the hydrophilic porous fluoropolymer membranes.

Hydrophilically modified fluorinated membrane (III)

Disclosed are hydrophilic porous PTFE membranes comprising PTFE and an amphiphilic copolymer, for example, a copolymer of the formula: wherein m and n are as described herein. Also disclosed are a method of preparing hydrophilic porous PTFE membranes and a method of filtering fluids through such membranes.

Hydrophilic porous polytetrafluoroethylene membrane (I)

Disclosed are copolymers which are useful in hydrophilically modifying fluoropolymer membranes. An example of the copolymers is: Also disclosed are a method of preparing such copolymers, a method of modifying fluoropolymer membrane surfaces, and hydrophilic fluoropolymer porous membranes prepared from the copolymers.

Hydrophilically modified fluorinated membrane (IV)

Disclosed are copolymers suitable for hydrophilically modifying the surface of fluoropolymer porous membranes, for example, a copolymer of the formula: wherein R, n, m, and x are as defined herein. Also disclosed are a method of preparing the copolymers, a method of hydrophilically modifying porous fluoropolymer supports, and composite hydrophilic fluoropolymer porous membranes prepared from the copolymers.

Hydrophilically modified fluorinated membrane (V)

Disclosed are membranes formed from self-assembling diblock copolymers of the formula (I): wherein R-R, n, and m are as described herein, which find use in preparing porous membranes. Embodiments of the membranes contain the diblock copolymer self-assembled into a cylindrical morphology. Also disclosed is a method of preparing such membrane which involves spray coating a polymer solution containing the diblock copolymer to obtain a thin film, followed by annealing the thin film in a solvent vapor and/or soaking in a solvent or mixture of solvents to form a nanoporous membrane.

Membrane comprising self-assembled block copolymer and process for producing the same by spray coating (Ic)

Disclosed are membranes formed from self-assembling block copolymers, for example, a diblock copolymer of the formula (I): wherein R&#x2014;R, n, and m are as described herein, which find use in preparing nanoporous membranes. Embodiments of the membranes contain the block copolymer that self-assembles into a cylindrical morphology. Also disclosed is a method of preparing such membrane which involves spray coating a polymer solution containing the diblock copolymer to obtain a thin film, followed by annealing the thin film in a solvent vapor and/or soaking in a solvent or mixture of solvents to form a nanoporous membrane.

Membrane comprising self-assembled block copolymer and process for producing the same by spray coating (IIc)

Disclosed are self-assembled structures formed from self-assembling block copolymers, for example, a diblock copolymer of the formula (I): wherein R-R, n, and m are as described herein, which find use in preparing nanoporous membranes. In an embodiment, the block copolymer self-assembles into a cylindrical morphology. Also disclosed is a method of preparing such membrane which involves spin coating a polymer solution containing the block copolymer to obtain a thin film, followed by solvent annealing of the film. Further disclosed is a method of preparing porous membranes from the self-assembled structures.

Self-assembled structure and membrane comprising block copolymer and process for producing the same by spin coating (VIa)

Disclosed are membranes formed from self-assembling block copolymers, for example, a diblock copolymer of the formula (I): wherein R-R, n, and m are as described herein, which find use in preparing nanoporous membranes. Embodiments of the membranes contain the block copolymer that self-assembles into a cylindrical morphology. Also disclosed is a method of preparing such membrane which involves hybrid casting a polymer solution containing the block copolymer to obtain a thin film, followed by evaporation of some of the solvent from the thin film, and coagulating the resulting this film in a bath containing a nonsolvent or poor solvent for the block copolymer.

Membrane comprising self-assembled block copolymer and process for producing the same by hybrid casting (IIb)

Disclosed are membranes formed from self-assembling diblock copolymers of the formula (I): wherein R-R, n, and m are as described herein, which find use in preparing porous membranes. Embodiments of the membranes contain the diblock copolymer that self-assembles into a cylindrical morphology. Also disclosed is a method of preparing such a membrane which involves hybrid casting a polymer solution containing the diblock copolymer to obtain a thin film, followed by evaporation of some of the solvent from the thin film, and coagulating the resulting this film in a bath containing a nonsolvent or poor solvent for the diblock copolymer.

Membrane comprising self-assembled block copolymer and process for producing the same by hybrid casting (Ib)

Disclosed are membranes formed from self-assembling block copolymers, for example, diblock copolymers of the formula (I): wherein R-R, n, and m are as described herein, which find use in preparing nanoporous membranes. Embodiments of the membranes contain a block copolymer that self-assembles into a cylindrical morphology. Also disclosed is a method of preparing such membrane which involves spin coating a polymer solution containing the block copolymer to obtain a thin film, followed by annealing the thin film in a solvent vapor and/or soaking in a solvent or mixture of solvents to form a nanoporous membrane.

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Port Washington, NY, United States of America

Khaled Abdel-Hakim Helmy Aamer