Solvent resistant polymeric membranes

Patent metadata

Field	Value
Publication number	US-10626276-B2
Application number	US-201715403530-A
Country	US
Kind code	B2
Filing date	Jan 11, 2017
Priority date	Mar 23, 2012
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

A radiation curable composition for preparing a polymeric membrane includes a) a membrane polymer selected from the group consisting of a polysulfone (PSU), a polyether sulfone (PES), a polyether etherketone (PEEK), a polyvinylchloride (PVC), a polyacrylonitrile (PAN), a polyvinylidene fluoride (PVDF), a polyimide (PI), a polyamide (PA) and copolymers thereof; b) a hydrophobic monomer or oligomer having at least two free radical polymerizable groups independently selected from the group consisting of an acrylate group, a methacrylate group, an acrylamide group, a methacrylamide group, a styrene group, a vinyl ether group, a vinyl ester group, a maleate group, a fumarate group, an itaconate group, and a maleimide group; and c) an organic solvent for the membrane polymer and the hydrophobic monomer. A polymeric membrane and a method for manufacturing the membrane are also disclosed.

First claim

What is claimed is:

1. A method for manufacturing a polymeric membrane, the method comprising, in order, the steps of:
a) preparing a radiation curable composition including:
a membrane polymer selected from the group consisting of a polysulfone (PSU), a polyether sulfone, a polyether etherketone, a polyvinylchloride, a polyacrylonitrile, a polyvinylidene fluoride, a polyimide, a polyamide, and copolymers thereof;
a hydrophobic monomer or oligomer including at least two free radical polymerizable groups independently selected from the group consisting of an acrylate group, a methacrylate group, an acrylamide group, a methacrylamide group, a styrene group, a vinyl ether group, a vinyl ester group, a maleate group, a fumarate group, an itaconate group, and a maleimide group;
an organic solvent for the membrane polymer and the hydrophobic monomer or oligomer; and
an acyl phosphineoxide photoinitiator having a maximum absorption at a wavelength above 320 nm;

b) coating a layer of the radiation curable composition onto a porous support;
c) phase inverting the coated layer by coagulating the radiation curable composition; and
d) curing the phase inverted coated layer by actinic radiation.

2. The method according to claim 1 , wherein the step b) is performed by roll to roll coating.

3. The method according to claim 1 , further comprising the step of:
e) conditioning the polymeric membrane by immersing the polymeric membrane in a solution including a conditioning agent and a solvent.

4. The method according to claim 1 , wherein the polymeric membrane includes the porous support.

5. The method according to claim 1 , wherein the porous support is selected from the group consisting of a woven fabric, a non-woven fabric, polyester, polytetrafluoroethylene, polyvinyl chloride, sintered glass, glass fibres, a ceramic support, and a metal mesh.

Assignees

• Agfa Gevaert
• Univ Leuven Kath

Inventors

• Struzynska-Piron Izabela
• Vankelecom Ivo
• Vanmaele Luc
• Loccufier Johan

Classifications

• C08F283/04

  on to polycarbonamides, polyesteramides or polyimides {(C08F283/004 takes precedence)} · CPC title

• B01D71/82

  characterised by the presence of specified groups, e.g. introduced by chemical after-treatment · CPC title

• B01D2323/34

  Use of radiation · CPC title

• C09D133/14

  of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen · CPC title

• B01D71/68

  Polysulfones; Polyethersulfones · CPC title