Patents Assigned to NIPPON FILCON CO., LIMITED
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Patent number: 9687814Abstract: Provided is a fibrous adsorbing material used for the adsorption and recovery of metals in a solution, which is a fibrous metal-adsorbing material that can be produced using existing production facilities without using special facilities or complicated operations, has high durability, is easy to diversify, and can be processed into various forms. The fibrous metal-adsorbing material is produced by a) a step of preparing an acrylate polymer having a large number of glycidyl groups in the molecule, b) a step of kneading a low-melting-point fiber matrix polymer therewith, c) a step of making the resulting mixture into a fibrous form by an melt-blend spinning method, and d) a step of allowing a long-chain ligand having an amino group or an imino group to react with glycidyl groups on the fiber surface to introduce a metal-adsorbing functional group. The fibrous metal-adsorbing material has high durability, is easy to diversify, and has various forms.Type: GrantFiled: August 26, 2013Date of Patent: June 27, 2017Assignee: NIPPON FILCON CO., LIMITEDInventors: Yoshinori Inoue, Toshifumi Katoh, Takehiro Kajiwara, Mitsuru Saito
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Patent number: 9592489Abstract: Problem The present invention provides, in a metal-adsorbing material used for the removal and recovery of a wide range of heavy metals in treated solutions such as industrial waste water, service water, and environmental water, a gel-like metal-adsorbing material having a large amount of metal adsorption and capable of meeting various demands; and also provide a metal adsorbent having a gel-like metal-adsorbing material supported on a porous carrier. Means for Resolution A metal-adsorbing polymer selected from polyethyleneimine and polyallylamine is crosslinked with a polyglycidyl ether, whereby a gel-like metal-adsorbing material having a large amount of metal adsorption and capable of meeting various demands is produced.Type: GrantFiled: January 27, 2013Date of Patent: March 14, 2017Assignee: NIPPON FILCON CO., LIMITEDInventors: Yoshinori Inoue, Takehiro Kajiwara, Toshifumi Katoh, Mitsuru Saito
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Patent number: 9452426Abstract: Problem To provide a method for easily producing an adsorbing material used for the removal and recovery of metals and ions in a solution, which is highly durable and has various adsorptive functional groups and forms applicable for various purposes.Type: GrantFiled: January 26, 2013Date of Patent: September 27, 2016Assignee: NIPPON FILCON CO., LIMITEDInventors: Yoshinori Inoue, Takehiro Kajiwara, Mitsuru Saito
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Patent number: 9199219Abstract: A metal adsorbent which can adsorb a wide variety of metals, can conform to various uses, and adsorbs metals in large amounts. Metal adsorbents in various forms, which have the property of highly efficiently adsorbing metals, are produced by (a) a method in which a polyamine polymer is chemically bonded and immobilized to a porous support, (b) a method in which a polyamine polymer is blended into a solution of a raw material for fibers and the mixture is formed into fibers by wet-spinning or dry spinning, and (c) a method in which a polyamine polymer is blended into a solution of a film-forming polymer and the mixture is formed into a film by a method of film formation from solution.Type: GrantFiled: April 16, 2010Date of Patent: December 1, 2015Assignee: NIPPON FILCON CO., LIMITEDInventors: Yoshinori Inoue, Mitsuru Saito, Hideyuki Yanai, Waka Kamichatani
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Patent number: 9174194Abstract: A metal adsorbent which can adsorb a wide variety of metals, can conform to various uses, and adsorbs metals in large amounts. Metal adsorbents in various forms, which have the property of highly efficiently adsorbing metals, are produced by (a) a method in which a polyamine polymer is chemically bonded and immobilized to a porous support, (b) a method in which a polyamine polymer is blended into a solution of a raw material for fibers and the mixture is formed into fibers by wet-spinning or dry spinning, and (c) a method in which a polyamine polymer is blended into a solution of a film-forming polymer and the mixture is formed into a film by a method of film formation from solution.Type: GrantFiled: November 4, 2014Date of Patent: November 3, 2015Assignee: NIPPON FILCON CO., LIMITEDInventors: Yoshinori Inoue, Mitsuru Saito, Hideyuki Yanai, Waka Kamichatani
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Publication number: 20150224474Abstract: Provided is a fibrous adsorbing material used for the adsorption and recovery of metals in a solution, which is a fibrous metal-adsorbing material that can be produced using existing production facilities without using special facilities or complicated operations, has high durability, is easy to diversify, and can be processed into various forms. The fibrous metal-adsorbing material is produced by a) a step of preparing an acrylate polymer having a large number of glycidyl groups in the molecule, b) a step of kneading a low-melting-point fiber matrix polymer therewith, c) a step of making the resulting mixture into a fibrous form by an melt-blend spinning method, and d) a step of allowing a long-chain ligand having an amino group or an imino group to react with glycidyl groups on the fiber surface to introduce a metal-adsorbing functional group. The fibrous metal-adsorbing material has high durability, is easy to diversify, and has various forms.Type: ApplicationFiled: August 26, 2013Publication date: August 13, 2015Applicant: NIPPON FILCON CO., LIMITEDInventors: Yoshinori Inoue, Toshifumi Katoh, Takehiro Kajiwara, Mitsuru Saito
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Publication number: 20150069292Abstract: Problem The present invention provides, in a metal-adsorbing material used for the removal and recovery of a wide range of heavy metals in treated solutions such as industrial waste water, service water, and environmental water, a gel-like metal-adsorbing material having a large amount of metal adsorption and capable of meeting various demands; and also provide a metal adsorbent having a gel-like metal-adsorbing material supported on a porous carrier. Means for Resolution A metal-adsorbing polymer selected from polyethyleneimine and polyallylamine is crosslinked with a polyglycidyl ether, whereby a gel-like metal-adsorbing material having a large amount of metal adsorption and capable of meeting various demands is produced.Type: ApplicationFiled: January 27, 2013Publication date: March 12, 2015Applicant: NIPPON FILCON CO., LIMITEDInventors: Yoshinori Inoue, Takehiro Kajiwara, Toshifumi Katoh, Mitsuru Saito
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Publication number: 20150065617Abstract: A metal adsorbent which can adsorb a wide variety of metals, can conform to various uses, and adsorbs metals in large amounts. Metal adsorbents in various forms, which have the property of highly efficiently adsorbing metals, are produced by (a) a method in which a polyamine polymer is chemically bonded and immobilized to a porous support, (b) a method in which a polyamine polymer is blended into a solution of a raw material for fibers and the mixture is formed into fibers by wet-spinning or dry spinning, and (c) a method in which a polyamine polymer is blended into a solution of a film-forming polymer and the mixture is formed into a film by a method of film formation from solution.Type: ApplicationFiled: November 4, 2014Publication date: March 5, 2015Applicant: NIPPON FILCON CO., LIMITEDInventors: Yoshinori INOUE, Mitsuru SAITO, Hideyuki YANAI, Waka KAMICHATANI
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Publication number: 20140332714Abstract: Problem To provide a method for easily producing an adsorbing material used for the removal and recovery of metals and ions in a solution, which is highly durable and has various adsorptive functional groups and forms applicable for various purposes.Type: ApplicationFiled: January 26, 2013Publication date: November 13, 2014Applicant: NIPPON FILCON CO., LIMITEDInventors: Yoshinori Inoue, Takehiro Kajiwara, Mitsuru Saito