ADSORBENTS MADE OF STYRENE POLYMERS

• Main Authors: TSUJITA, YOSHIHARU, TOMOTSU, NORIO
• Format: Patent
• Language: English; French; Japanese
• Published: 16.11.2000
• Edition: 7
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

(1) An adsorbent made of a styrene polymer, characterized by being produced by dissolving a mainly syndiotactic styrene polymer in an organic compound having an affinity for the polymer, subjecting the obtained solution to molding, and removing the organic compound from the resulting molded article, (2) an adsorbent as set forth in the item (1) wherein the molding is conducted by melt casting, and (3) an adsorbent as set forth in the item (1) or (2) wherein the removal of the organic compound is conducted by vaporization under a reduced pressure. These adsorbents can selectively and efficiently adsorb organic compounds contained in gases or liquids. L'invention concerne (1) un adsorbant issu d'un polymère de styrène caractérisé en ce qu'il est obtenu par dissolution d'un polymère de styrène essentiellement syndiotactique dans un composé organique ayant une affinité pour ce polymère. La solution est moulée et le composé organique est extrait de l'article moulé obtenu, puis (2) l'adsorbant obtenu sous (1) est moulé par fusion et (3) le composé organique est éliminé par vaporisation sous une pression réduite. Ces adsorbants peuvent adsorber de manière efficace et sélective les composés organiques contenus dans les gaz ou liquides.