Composite membrane with coating comprising polyalkylene oxide and oxy-substituted phenyl compounds
AssigneeDow Global Technologies LLC
InventorsWilliam E. Mickols, Chunming Zhang
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Abstract
Composite membranes including a coating of polyalkylene oxide and oxy-substituted phenyl compounds along with various methods for making and using the same. In one embodiment, the composite membrane comprises a thin film polyamide layer including a coating of a reaction product of a polyalkylene oxide compound and an oxy-substituted phenyl compound. In another embodiment, the coating comprises a polymer including alkylene oxide repeating units and one or more oxy-substituted phenyl functional groups.
Claims10
A composite membrane comprising a microporous support, a thin film polyamide layer and a coating located upon a surface portion of the thin film polyamide layer, wherein the coating comprises a reaction product of a polyalkylene oxide compound and an oxy-substituted phenyl compound, wherein the polyalkylene oxide compound comprises a functional group capable of reacting with the oxy-substituted phenyl compound, or wherein the polyalkylene oxide compound and oxy-substituted phenyl compound are chemically linked by reaction with a multifunctional compound including multiple reactive functional groups;
- and wherein the oxy-substituted phenyl compound is represented by at least one of:
- wherein:
- X and Y are independently selected from:
- hydrogen, hydroxyl, halogen, aliphatic, alkoxy, sulfone, sulfoxide, sulfonate, sulfate, thiol, isocyanate, epoxy, amine and anhydrate;
- R7 and R8 are independently selected from hydrogen and aliphatic;
- and R12 is independently selected from hydrogen, aliphatic and alicyclic;
- and
- wherein X, Y and E are independently selected from:
- hydrogen, hydroxyl, halogen, aliphatic, alkoxy, sulfone, sulfoxide, sulfonate, sulfate, thiol, isocyanate, epoxy, amine and anhydrate.
A composite membrane comprising a microporous support, a thin film polyamide layer and a coating located upon a surface portion of the thin film polyamide layer, wherein the coating comprises a polymer comprising alkylene oxide repeating units and at least one oxy-substituted phenyl functional group represented by Formula VIII:
- wherein X, Y and E are independently selected from:
- hydrogen, hydroxyl, halogen, aliphatic, alkoxy, sulfone, sulfoxide, sulfonate, sulfate, thiol, isocyanate, epoxy, amine and anhydrate;
- and A is selected from:
- hydrogen, aliphatic and alicyclic.
A method of modifying a composite membrane comprising a microporous support and a thin film polyamide layer comprising the step of coating at least a portion of a surface of the thin film polyamide layer with a polyalkylene oxide compound and an oxy-substituted phenyl compound;
- wherein the polyalkylene oxide compound comprises a functional group capable of reacting with the oxy-substituted phenyl compound, or wherein the polyalkylene oxide compound and oxy-substituted phenyl compound are chemically linked by reaction with a multifunctional compound including multiple reactive functional groups;
- and wherein the oxy-substituted phenyl compound is represented by at least one of:
- wherein:
- X and Y are independently selected from:
- hydrogen, hydroxyl, halogen, aliphatic, alkoxy, sulfone, sulfoxide, sulfonate, sulfate, thiol, isocyanate, epoxy, amine and anhydrate;
- R7 and R8 are independently selected from hydrogen and aliphatic;
- and R12 is independently selected from hydrogen, aliphatic and alicyclic;
- and
- wherein X, Y and E are independently selected from:
- hydrogen, hydroxyl, halogen, aliphatic, alkoxy, sulfone, sulfoxide, sulfonate, sulfate, thiol, isocyanate, epoxy, amine and anhydrate.
Dependencies are inferred from the claim text.