Fluoropolymer forms durable water-purification membranes.

Press Release Summary:

HALAR® ECTFE offers heat and chemical resistance and is stable at high pH levels. Membranes made with copolymer of ethylene and chlorotrifluoroethylene are not affected by direct exposure to strong bases, mineral and oxidizing acids, or chlorinated compounds. Product is also resistant to aggressive cleaning agents and strong polar solvents such as dimethylformamide, dimethylacetamide, and N-methyl pyrrolidone.

Original Press Release:

Solvay Advanced Polymers Adds HALAR® ECTFE to Product Portfolio for Membranes

Fluoropolymer boosts performance of membranes used in water purification

Alpharetta, Ga. -- Solvay Advanced Polymers, L.L.C. announces the addition of HALAR® ECTFE to its portfolio of high-performance polymers for the membrane industry. The exceptional chemical resistance and stability at high pH levels of this fluoropolymer broadens the performance capabilities of the company's product offering.

This product will be featured in the company's exhibit at the upcoming American Water Works Association (AWWA) annual conference and exposition being held in Anaheim, Calif., June 15-19, 2003.

HALAR® ECTFE is a copolymer of ethylene and chlorotrifluoroethylene that brings advantages to membranes used in water purification systems used for both potable and waste water treatment. It has excellent resistance to aggressive cleaning agents. The more aggressive the cleaning agent, the cleaner the membrane. The cleaner the membrane, the higher its flux and better overall operating efficiency.

Membranes made with HALAR® ECTFE can last longer and require fewer replacements because of the polymer's resistance to a wide range of chemicals. These membranes are not affected by direct exposure to strong bases (such as sodium and potassium hydroxides), strong mineral and oxidizing acids (such as sulfuric and hydrofluoric acids), and chlorinated compounds (such as methylene chloride and sodium hypochlorite). This is a significant performance advantage over many other materials used for polymeric membranes today.

HALAR® ECTFE is also resistant to strong polar solvents, such as dimethylformamide (DMF), dimethylacetamide (DMAC), and N-methyl pyrrolidone (NMP), which are typically used to fabricate polymeric membranes.

The company currently offers two grades of HALAR® ECTFE designed especially for the membrane industry.


HALAR® ECTFE is a high-purity fluoropolymer that offers a unique combination of mechanical properties, heat and chemical resistance, and good processing characteristics. It is manufactured and sold by Solvay Solexis, a new organization created by the Solvay Group following the company's acquisition of Ausimont, a global fluorinated specialties manufacturer, in May of 2002.

About Solvay Advanced Polymers

Solvay Advanced Polymers, L.L.C. is an indirect subsidiary of Solvay America, Inc., the U.S. holding company of Solvay, S.A. The company offers the widest range of high-performance polymers for membranes in the world today. This includes a full line of sulfone polymers and fluoropolymers that are used to create porous filaments or flat sheet used in micro, ultra and reverse osmosis membranes. These membranes can be used in applications ranging from artificial kidneys for blood purification to wastewater recovery as well as food and beverage processing. For more information, please visit our website at www.solvaymembranes.com.

Solvay Advanced Polymers also manufactures a comprehensive line of high-performance plastics used in a wide range of demanding applications in the automotive, aerospace, industrial, food service, medical and electronics industries worldwide. Products include the IXEF® polyarylamide and PRIMEF® polyphenylene sulfide product lines of Solvay S.A. combined with a portfolio of materials that had comprised BPAmoco's engineering resins business. For more information about this and other Solvay Advanced Polymers products and services, please visit our website at www.solvayadvancedpolymers.com.

Solvay S.A. is an international pharmaceuticals and chemicals group with headquarters in Brussels, Belgium, employing about 30,000 people in 50 countries. In 2002, its consolidated sales amounted to EUR 7.9 billion generated by its four activity sectors: Pharmaceuticals, Chemicals, Plastics, and Plastics Processing. Solvay S.A. is listed in the Euronext 100 index of top European companies. Details are available at www.solvay.com.

Customer Inquiries:

Solvay Advanced Polymers, L.L.C.

4500 McGinnis Ferry Road

Alpharetta, GA 30005-3914 USA

Phone: 800.621.4557 (USA only) or +1.770.772.8200


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