PRODUCTION OF SULFONATED 1,2-POLYBUTADIENE
PURPOSE:To obtain a sulfonated 1,2-polybutadiene having high ion exchange capacity and ion exchange speed, by reacting a polybutadiene containing a specific amount of vinyl bond with a specific sulfonation agent. CONSTITUTION:A polybutadiene containing >=70% vinyl bond is dissolved in a solvent (...
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| creator | OKUYA EITARO ONO TOSHIO IWAMA ICHIRO |
| description | PURPOSE:To obtain a sulfonated 1,2-polybutadiene having high ion exchange capacity and ion exchange speed, by reacting a polybutadiene containing a specific amount of vinyl bond with a specific sulfonation agent. CONSTITUTION:A polybutadiene containing >=70% vinyl bond is dissolved in a solvent (preferably dichloroethane, etc.) at a concentration of 5-15wt%, and is made to react with one or more sulfonation agents selected from concen trated sulfuric acid, chlorosulfonic acid, sulfuric anhydride and fuming sulfuric acid preferably at -20-+150 deg.C. USE:The polymer is used as an ion exchange resin for the production of purified water, the softening of hard water, the treatment of waste water, etc. |
| format | Patent |
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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING |
| title | PRODUCTION OF SULFONATED 1,2-POLYBUTADIENE |
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