Membranes are:

Sulfone polymers (UDEL® Polysulfone PSF, RADEL® A Polyethersulfone PES, and RADEL® R Polyphenylsulfone PPSU) and fluoropolymers (SOLEF® Polyvinylidene Fluoride PVDF) are thermoplastic resins that are especially well suited for fabrication of porous polymeric membranes (such as hollow fibers, spiral wound, plate-type and tubular membranes) for various filtration applications:

• Water treatment: potable water (from surface, ground, brackish, and salty waters), wastewater, and point-of-use POU / point-of-entry POE.
• Medical purification: HemoDialysis HD, proteins and pharmaceutical.
• Gas separation.
• Miscellaneous: food & beverage concentration (alcohol, wine, fruit juice, sugar and raw beet juice), dairy filtration and ion exchange.

Our resins offer the membrane producers the following benefits:

Thermal and mechanical benefits:

• High fiber strength.
• Continuous use up to 150°C for SOLEF® PVDF (degree symbol is ANSI 0176) 
• Tg of 185°C for UDEL® PSU

Chemical benefits:

• Withstands the majority of membrane-cleaning methods.
• Tolerates feeds containing various contaminants.
• Excellent hydrolytic and oxidative stability.
• Readily soluble in industrial solvents used in membrane manufacturing.

Manufacturing benefits:

• Easy to process
• Reliable results
• Allow reproducible formation of good quality membranes
• Controllable pore sizes (for membranes ranging from RO to MF)
• Wide range of molecular weights available to create various solution viscosities.

Solvay Advanced Polymers. Let the benefits filter down to you, your products, and your customers.