1
Daniel Mullette, Heinz Joachim Muller: Poly(ethylene chlorotrifluoroethylene) membranes. Siemens Water Technologies, July 24, 2007: US07247238 (65 worldwide citation)

Porous polymeric membranes including Halar (poly (ethylene chlorotrifluoroethylene)) and related compounds and the methods of production thereof which avoid the use of toxic solvents. Preferred solvents, coating agents and pore forming agents are citric acid ethyl ester or glycerol triacetate. The m ...


2
Heinz Joachim Muller, Daniel Mullette: Membrane polymer compositions. Siemens Water Technology, June 5, 2007: US07226541 (59 worldwide citation)

The invention relates to a terpolymer of tetrafluoroethylene (TFE) monomer, polyvinylidene fluoride (PVDF) monomer and hexafluoropropylene (HFP) monomer for forming an ultrafiltration or microfiltration membrane, method of forming said membranes, and to the ultrafiltration or microfiltration membran ...


3
Daniel Mullette, Heinz Joachim Muller: Poly(ethylene chlorotrifluoroethylene) membranes. Siemens Water Technologies, December 15, 2009: US07632439 (47 worldwide citation)

Porous polymeric membranes including HALARĀ® (poly(ethylene chlorotrifluoroethylene)) and related compounds and the methods of production thereof which avoid the use of toxic solvents. Preferred solvents, coating agents and pore forming agents are citric acid ethyl ester or glycerol triacetate. The m ...


4
Daniel Mullette, Joachim Muller, Neeta Patel: Membrane post treatment. Siemens Water Technologies, February 16, 2010: US07662212 (44 worldwide citation)

The invention relates to polymeric ultrafiltration or microfiltration membranes of, for instance, Halar, PVDF or PP, incorporating PVME or vinyl methyl ether monomers. The PVME may be present as a coating on the membrane or dispersed throughout the membrane or both. The membranes are preferably hydr ...


5
Daniel Mullette: Membrane post treatment. Siemens Water Technologies, Lando & Anastasi, January 11, 2011: US07867417 (7 worldwide citation)

Hydrophilic porous polymeric membranes with high permeabilities, and processes for the preparation thereof are disclosed. Membranes may be prepared by including a preferably hydrophilic cross-linkable component such as PVP (either by inclusion into the polymer dope prior to casting, or coating or qu ...


6
Heinz Joachim Muller, Daniel Mullette: Hydrophilic membranes. Siemens, September 3, 2013: US08524794

A method of coating a polymer comprising the step of treating the polymer with an activating agent to produce a reactive polymer, for example treating a polymer bearing at least one X (halogen) group and at least one H with base to eliminate HX. The reactive polymer is then reacted with a reactive c ...


7
Daniel Mullette, Joachim Muller, Neeta Patel: Membrane post treatment. Siemens, September 11, 2012: US08262778

The invention relates to polymeric ultrafiltration or microfiltration membranes of, for instance, poly(ethylene chlorotrifluoroethylene) (HALARĀ®), PVDF or PP, incorporating PVME or vinyl methyl ether monomers. The PVME may be present as a coating on the membrane or dispersed throughout the membrane ...


8
Daniel Mullette, Joachim Muller, Neeta Patel: Membrane post treatment. Siemens, November 15, 2011: US08057574

The invention relates to polymeric ultrafiltration or microfiltration membranes of, for instance, Halar, PVDF or PP, incorporating PVME or vinyl methyl ether monomers. The PVME may be present as a coating on the membrane or dispersed throughout the membrane or both. The membranes are preferably hydr ...


9
Heinz Joachim Muller, Daniel Mullette: Membrane polymer compositions. Knobbe Martens Olson & Bear, September 30, 2004: US20040191894-A1

The invention relates to a terpolymer of tetrafluoroethylene (TFE) monomer, polyvinylidene fluoride (PVDF) monomer and hexafluoropropylene (HFP) monomer for forming an ultrafiltration or microfiltration membrane, method of forming said membranes, and to the ultrafiltration or microfiltration membran ...


10
Daniel Mullette, Heinz Joachim Muller: Chemical and process for cleaning membranes. Siemens Water Technologies, Siemens Corporation, September 13, 2007: US20070210002-A1

A method for cleaning a microfiltration or ultrafiltration membrane comprising the step of contacting said membrane with a hydroxyl radical. The method is particularly suited for oxidation resistant membranes, such as Halar, with biological or organic fouling. The hydroxyl radicals for example are g ...