Sulfonation of polyether sulfone (PES)! We have successfully achieved a high introduction rate of sulfonic acid groups 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 and hydrophilicity, 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 a decrease in molecular weight. (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.
Inquire About This Product
basic information
For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
【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.
catalog（1）
Download All Catalogs
Company information
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, specialty 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.