Novel membranes

Patent metadata

Field	Value
Publication number	US-2016158707-A1
Application number	US-201414902752-A
Country	US
Kind code	A1
Filing date	Jun 27, 2014
Priority date	Jul 4, 2013
Publication date	Jun 9, 2016
Grant date	—

Abstract

Membrane comprising a carrier and a rejection layer, wherein said membrane is a multiple channel membrane. The rejection layer is a polyamide layer. Process for making multiple channel membranes coated with a polyamide layer.

First claim

1 . A membrane comprising a carrier and a rejection layer, wherein the membrane is a multiple channel membrane.

2 . Membrane The membrane according to claim 1 , wherein the rejection layer is a polyamide layer.

3 . The membrane according to claim 1 , wherein the carrier is a multiple channel UF or MF carrier membrane.

4 . The membrane according to claim 1 , wherein the carrier consists essentially of polyarylene ether, polysulfone (PSU), polyethersulfone (PESU), polyphenylenesulfone (PPSU), polyamide (PA), polyvinylaleohol (PVA), Cellulose Acetate (CA), Cellulose Triacetate (CTA), CA-triacetate blend, Cellulose ester, Cellulose Nitrate, regenerated Cellulose, aromatic, aromatic/aliphatic or aliphatic Polyamide, aromatic, aromatic/aliphatic or aliphatic Polyimide, Polybenzimidazole (PBI), Polybenzimidazolone (PBIL), Polyacrylonitrile (PAN), PAN-poly(vinyl chloride) copolymer (PAN-PVC), PAN-methallyl sulfonate copolymer, polyetherketone (PEK), Polyetheretherketone (PEEK), sulfonated polyetheretherketone (SPEEK), Poly(dimethylphenylene oxide) (PPO), Polycarbonate, Polyester, Polytetrafluroethylene PTFE, Poly(vinylidene fluoride) (PVDF), Polystyrene (PS), Polypropylene (PP), Polyelectrolyte complexes, Poly(methyl methacrylate) PMMA, Polydimethylsiloxane (PDMS), aromatic, aromatic/aliphatic or aliphatic polyimide urethanes, aromatic, aromatic/aliphatic or aliphatic polyamidimides, crosslinked polyimides or mixtures thereof.

5 . The membrane according to claim 1 , wherein the carrier consists essentially of polysulfone, polyethersulfone, polyphenylene sulfone, PVDF or cellulose acetate.

6 . The membrane according to claim 1 , wherein the membrane comprises 2 to 19 longitudinal channels.

7 . The membrane according to claim 1 , wherein the membrane comprises 7 longitudinal channels.

8 . The membrane according to claim 2 , wherein the polyamide rejection layer is located on the inside of each channel of the multiple channel carrier membrane.

9 . The membrane according to claim 2 , wherein the polyamide rejection layer has a thickness of 10 to 1000 nm.

10 . The membrane according to claim 2 , wherein the polyamide rejection layer and/or carrier comprises particles in the of a nanometer size range.

11 . The membrane according to claim 1 , further comprising a protective layer on the rejection layer.

12 . The membrane according to claim 1 , wherein the membrane is an FO or RO membrane.

13 . A membrane module comprising at least one membrane according to claim 1 .

14 . A filtration system comprising at least one membrane module according to claim 13 .

15 . A process for making the membrane of claim 1 , comprising coating a multiple channel UF or MF carrier membrane is coated with a polyamide layer.

16 . The process according to claim 15 , wherein the multiple channel UF or MF carrier membrane is coated with a polyamide layer using an interfacial polymerization process.

17 . The process according to claim 15 , wherein the multiple channel UF or MF carrier membrane is coated with a polyamide layer in an interfacial polymerization process using at least one polyamine and at least one polyfunctional acyl halide.

18 . The process according to claim 15 , comprising:
a) contacting the multiple channel UF or MF carrier membrane with a composition A1 comprising at least one polyamine monomer having at least two amine groups and at least one solvent S1; and b) contacting the multiple channel UF or MF carrier membrane with a composition A2 comprising at least one polyacylhalide monomer having at least two acyl halide groups and at least one solvent S2 to form a film layer (F) on the multiple channel UF or MF carrier membrane.

19 . (canceled)

Assignees

• Basf Se

Inventors

• Heijnen Martin
• Weber Martin
• Staudt Claudia
• Jung Marc
• Widjojo Natalia
• Zhong Peishan
• Low Jia Le

Classifications

• B01D69/10 Primary

  Supported membranes; Membrane supports · CPC title

• B01D71/56

  Polyamides, e.g. polyester-amides · CPC title

• B01D67/0088

  Physical treatment with compounds, e.g. swelling, coating or impregnation · CPC title

• B01D67/0006

  by chemical reactions (in-situ polymerisation, polycondensation, cross-linking or reaction for manufacturing composite membranes B01D69/125) · CPC title

• B01D61/02

  Reverse osmosis; Hyperfiltration {; Nanofiltration} · CPC title