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US 9,441,078 B2Granted
Self-assembling polymers—I
AssigneePall Corporation
InventorKhaled Abdel-Hakim Helmy Aamer
Life of this patent
Estimating the term…
Abstract
Disclosed are self-assembling diblock copolymers of the formula (I): wherein R1-R4, 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 copolymers.
Claims20
A diblock copolymer of the formula (I):
- wherein:
- R1 is a C6-C22 alkyl group optionally substituted with a substituent selected from halo, alkoxy, alkylcarbonyl, alkoxycarbonyl, amido, or nitro, or a C3-C11 cycloalkyl group, optionally substituted with a substituent selected from alkyl, halo, alkoxy, alkylcarbonyl, alkoxycarbonyl, amido, or nitro;
- R2 is a C6-C20 aryl group or a heteroaryl group, optionally substituted with a substituent selected from hydroxy, amino, halo, alkoxy, alkylcarbonyl, alkoxycarbonyl, amido, or nitro;
- one of R3 and R4 is a C6-C14 aryl group, optionally substituted with a substituent selected from hydroxy, halo, amino, or nitro, and the other of R3 and R4 is a C1-C22 alkoxy group, optionally substituted with a substituent selected from carboxy, amino, mercapto, alkynyl, alkenyl, halo, azido, and heterocyclyl;
- and
- n and m are independently 2 to about 2000.
3 more elements
A diblock copolymer of the formula (I):
- wherein:
- R1 is a C1-C22 alkyl group optionally substituted with a substituent selected from alkoxy, alkylcarbonyl, alkoxycarbonyl, amido, or nitro, or a C3-C11 cycloalkyl group, optionally substituted with a substituent selected from alkyl, halo, alkoxy, alkylcarbonyl, alkoxycarbonyl, amido, or nitro;
- R2 is a C6-C20 aryl group or a heteroaryl group, optionally substituted with a substituent selected from hydroxy, amino, alkoxy, alkylcarbonyl, alkoxycarbonyl, amido, or nitro;
- one of R3 and R4 is a C6-C14 aryl group, optionally substituted with a substituent selected from hydroxy, halo, amino, or nitro, and the other of R3 and R4 is a C1-C22 alkoxy group, optionally substituted with a substituent selected from carboxy, amino, mercapto, alkynyl, alkenyl, halo, azido, and heterocyclyl;
- and
- n and m are independently 2 to about 2000.
3 more elements
A method of preparing a diblock copolymer of the formula (I):
- wherein:
- R1 is a C1-C22 alkyl group optionally substituted with a substituent selected from halo, alkoxy, alkylcarbonyl, alkoxycarbonyl, amido, or nitro, or a C3-C11 cycloalkyl group, optionally substituted with a substituent selected from alkyl, halo, alkoxy, alkylcarbonyl, alkoxycarbonyl, amido, or nitro;
- R2 is a C6-C20 aryl group or a heteroaryl group, optionally substituted with a substituent selected from hydroxy, amino, halo, alkoxy, alkylcarbonyl, alkoxycarbonyl, amido, or nitro;
- one of R3 and R4 is a C6-C14 aryl group, optionally substituted with a substituent selected from hydroxy, halo, amino, or nitro, and the other of R3 and R4 is a C1-C22 alkoxy group, optionally substituted with a substituent selected from carboxy, amino, mercapto, alkynyl, alkenyl, halo, azido, and heterocyclyl;
- and
- n and m are independently 2 to about 2000, comprising:
- (i) polymerizing one of the two monomers of the formulas:
- with a ring opening metathesis polymerization (ROMP) catalyst to obtain a ring-opened polymer having a living chain end;
- (ii) polymerizing the other of the two monomers on the living end of the ring-opened polymer obtained in (i) to obtain a diblock copolymer having a living end;
- and
- (iii) terminating the living end of the diblock copolymer obtained in (ii) with an optionally substituted alkyl vinyl ether;
- wherein the ROMP catalyst is of the formula:
9 more elements
Dependencies are inferred from the claim text.