Abstract: The present invention is relative to a water-immersed switch which does not conduct electricity in the absence of a dielectric liquid, such as water, and which conducts electricity in the presence of the dielectric liquid. The water-immersed switch includes a modified copolymer containing acrylonitrile and at least one of styrene and/or a conjugated diene, as constituent units, and acidic groups introduced into said modified copolymer, and a plurality of electrically conductive electrodes.

Abstract: The present invention is relative with an organic liquid absorbent resin comprised of a water-insoluble resin to which have been introduced hydrophilic polar groups. This organic liquid absorbent resin is produced on introducing hydrophilic groups to the water-insoluble resin. This organic liquid absorbent resin is inexpensive, high in safety and superior in is performance in absorbing not only hydrophilic solvents but also oleophilic solvents.

Abstract: The present invention is a process for regenerating a used resin and prevents deterioration in the quality of the resin by adding to the used resin an another resin having given physical properties superior to those of the used resin and then regenerating the resin.

Abstract: A method for preparing aluminum sulfate which comprises subjecting sulfuric acid and aluminum hydroxide to reaction, wherein the reaction is advanced in the presence of at least one member selected from the group consisting of nitric acid and a peroxide. An industrial composition comprising aluminum sulfate. By the method of the present invention, aluminum sulfate can be efficiently and commercially advantageously prepared. Further, the industrial composition of the present invention can be advantageously used in various industrial fields as, for example, a waste water treatment agent, a paper sizing agent, a tanning agent for hides, a clarifying agent for fats and oils, or a catalyst for industrial use.

Abstract: The present invention relates to an aqueous electrolyte solution absorber including an aqueous electrolyte solution absorbent polymer obtained by introducing a hydrophilic polar group to a water insoluble polymer and a material to be sucked. The aqueous electrolyte solution absorber is produced by filling a water permeable bag type member with the aqueous electrolyte solution absorbent polymer obtained by introducing the hydrophilic polar group to the water insoluble polymer and a material to be sucked. The aqueous electrolyte solution absorber is inexpensive and has a high safety, a broad applicable range and a good handling property upon transportation or storage. Thus, a large amount of aqueous electrolyte solution absorbers can be rapidly conveyed at one time even to a risky place where persons are endangered to convey the absorbers.

Abstract: Sulfonated styrene polymer and/or its salt, a waste water treatment material and sludge dehydrating agent each containing the sulfonated styrene polymer and/or its salt as an effective component thereof are disclosed. The waste water treatment material is used such that the sulfonated styrene polymer and/or its salt, which has a viscosity of 10 mPa·S to 20,000 mPa·S at 25° C. after 0.01 N to 5 N of a neutral salt has been added to the 1 wt % water solution of the sulfonated styrene polymer and/or its salt, is added to each waste water so that waste water is purified. When a sludge dehydrating agent is required, the sulfonated styrene polymer and/or its salt having a weight average molecular weight of 1,100,000 or greater is combined with a cation polymer flocculating agent or an inorganic flocculating agent.

Abstract: A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.

Abstract: A high-molecular flocculant rendered water-soluble by conversion of cyano groups contained in a high-molecular material, a method for producing the flocculant, and a method for efficiently processing water using the flocculant. A high-molecular material containing acrylonitrile as a monomer is processed safely to impart hydrophilicity to the material and the resulting product is used for water processing to contribute to environmental conservation. An amino compound is added to a cyano group containing high-molecular material to convert at least a portion of the cyano group (—C≡N) into a molecular structure portion having an imidamino structure and, if necessary, to convert at, least the portion into one of an acid salt, a quaternary ammonium salt or a hydrolyzate structure portion to give a high-molecular flocculant.

Abstract: To provide a plastic material suitable for preservation of the environment and a method for producing the same by adding organic or inorganic sludge to a resin derived from waste plastics to form a flame-retarded resin, an antistatic resin, or a biodegradable resin so that the electrical and physical properties of the resin are improved and sludge and waste plastics are effectively utilized.

Abstract: A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.

Abstract: In a cleaning treatment of a substrate using an aqueous solution of ammonium fluoride or a mixture of an aqueous solution of ammonium fluoride and hydrofluoric acid as a cleaning liquid, the cleaning liquid is replenished by at least one liquid selected from the group consisting of water, ammonia, aqueous ammonia, and an aqueous solution of ammonium fluoride with the lapse of time during the use of the cleaning liquid, in which the required amount of the liquid to be added according to the time lapse is calculated based on the measurement date and controlled, or the component concentration of the cleaning liquid is detected and the liquid is added according to the obtained result, so that not only can the substrate be cleaned uniformly and stably, but also a resource saving and a reduction in waste can be achieved.

Abstract: A water absorber for absorbing and removing water remaining on floors resulting from leakage or flooding, and comprising a water-permeable bag-shaped casing made of cotton cloth filled with an antibacterial water-absorbing agent comprised of a modified polymer compound. The water absorber absorbs water to swell. The water absorber is filled with the antibacterial water-absorbing agent, and therefore, even after absorbing water, the water absorber is not under unsanitary conditions such that bacteria propagate. When the water absorber is dried, it regains water-absorbing property and can be reused as a water absorber. The antibacterial water-absorbing agent (modified polymer compound) is produced by subjecting to acid treatment and metal-salt forming treatment a scrap material of typical organic resins, such as an ABS resin, and has a nitrile group, a hydrolysis product of the nitrile group, and an acid group introduced as a substituent in the form of a metal salt.

Abstract: A water-absorbing resin having superior water absorption properties, and a method for manufacturing the water-absorbing resin having superior water absorption properties in a short time, in which used waste materials are used for effective utilization of resources. To this end, a high-molecular material containing acrylonitrile, styrene and conjugated dienes as constituent units are processed with acid and/or alkali.

Abstract: A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.

Abstract: A technique of utilizing a sulfuric acid/peroxide liquid mixture, for example, its waste liquid material, is to be developed so that the waste liquid can be re-utilized and effectively applied to obviate the problem resulting from disposal. To this end, there is provided a method for utilizing a sulfuric acid/peroxide liquid mixture, for example, its waste liquid, in which peroxide in the sulfuric acid/peroxide liquid mixture is decomposed to render it possible to utilize the liquid mixture as sulfuric acid.

Abstract: A high-molecular flocculant rendered water-soluble by conversion of cyano groups contained in a high-molecular material, a method for producing the flocculant, and a method for efficiently processing water using the flocculant. A high-molecular material containing acrylonitrile as a monomer is processed safely to impart hydrophilicity to the material and the resulting product is used for water processing to contribute to environmental conservation. An amino compound is added to a cyano group containing high-molecular material to convert at least a portion of the cyano group (—C≡N) into a molecular structure portion having an imidamino structure and, if necessary, to convert at least the portion into one of an acid salt, a quaternary ammonium salt or a hydrolyzate structure portion to give a high-molecular flocculant.

Abstract: An antimicrobial agent utilizes a resin having acrylonitrile and styrene and/or a conjugated diene as units. The antimicrobial agent includes a metal-salt-containing copolymer, and the metal-salt-containing copolymer is obtained by treating a copolymer containing acrylonitrile and at least one of styrene and a conjugated diene as units with an acid to thereby introduce acid radicals into the copolymer, and converting at least part of the acid radicals into a salt of at least one metal selected from among Ag, Cu, and Zn.

Abstract: A method of manufacturing a polyelectrolyte having the step of sulfonating polystyrene resin in a state where the polystyrene resin has been dissolved or dispersed in solvent composed of alicyclic compounds.

Abstract: A polymer electrolyte which contains an inorganic pigment, having a sulfonated polystyrene resin as a principal ingredient, and is soluble to water.

Abstract: Ascorbic acid and/or ascorbic acid salt is made to act together with oxygen on an organic compound. Alternatively, light radiation is applied during chemical action with oxygen so as to improve a composition efficiency of an organic compound and obtain a preferable decomposition amount. This reduces the load caused by an organic compound decomposition on the environment.