Sulfonation of polyether sulfone (PES)! We have successfully achieved a high sulfonic acid group introduction rate while preventing a decrease in molecular weight.
KONISHI Chemical Industry Co., Ltd. has developed sulfonated polyether sulfone 'S-PES' by sulfonating polyether sulfone (PES). The sulfonic acid group exhibits ion exchange capacity, hydrophilicity, and other properties, imparting new functions to existing polymer compounds. A novel sulfonation method for aromatic polymers has been developed, successfully achieving a high sulfonic acid group introduction rate while preventing molecular weight reduction. (Patent No. 5824734) 【Quality Example】 ■ Appearance: Light brown powder ■ Sulfonic acid group introduction rate: 30% ■ Weight average molecular weight: 130,000 ■ Moisture: ≦3% ■ Development stage: Pilot results available *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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【Applications】 ■ Functional separation membranes (such as water treatment membranes) ■ Ion exchange membranes for redox flow batteries ■ Electrolyte membranes for solid polymer fuel cells *For more details, please refer to the PDF document or feel free to contact us.
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KONISHI Chemical Industry Co., Ltd. develops, manufactures, sells, and provides contract manufacturing of functional chemicals used in a wide range of applications, including information electronic materials, functional resins, special monomers, silicon-based organic/inorganic hybrid materials, and pharmaceutical intermediates. We strive to translate new technologies and customer needs into chemistry in our own way, challenging ourselves to design new functional materials.
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