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公开(公告)号：DE10006903A1
公开(公告)日：2000-11-23
申请号：DE10006903
申请日：2000-02-16
Applicant: AGENCY IND SCIENCE TECHN , SHIN NIPPON AIR TECH CO LTD
Inventor： SAKO TAKESHI , GODO MASAZUMI , ISHIDA SEIJI , MIURA KUNIO , TSUGUMI MASAYUKI
IPC: C07C27/02 , C07C29/128 , C07C67/03 , C07C69/773 , C07C67/00 , C07C67/48 , C07C69/82 , C07C29/74 , C07C31/20 , C07B37/06 , B09B3/00
Abstract: A process for the continuous production of monomer components of an aromatic polyester, by reaction of the aromatic polyester (A) with a super critical alcohol (B) to form an aromatic divalent carboxylic acid ester (C) and a divalent alcohol (D) is carried out in a reactor which is maintained under supercritical conditions for (B). A process for the continuous production of monomer components of an aromatic polyester, by reaction of the aromatic polyester (A) with a super critical alcohol (B) to form an aromatic divalent carboxylic acid ester (C) and a divalent alcohol (D) comprises continuous addition of the aromatic polyester (A) and the monovalent alcohol (B) into a reactor which is maintained under supercritical conditions for (B); reaction of (A) and (B) with continuous removal of (C), (D) and (B) from the reactor and separation and recovery of (C) and (D).
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公开(公告)号：DE19712045A1
公开(公告)日：1997-12-11
申请号：DE19712045
申请日：1997-03-21
Applicant: AGENCY IND SCIENCE TECHN
Inventor： SAKO TAKESHI , SATO MASAHITO , SUGETA TSUTOMU , OTAKE KATSUTO , TSUGUMI MASAYUKI
IPC: A62D3/20 , A62D3/38 , A62D101/08 , A62D101/22 , A62D101/26 , A62D101/28 , B09B3/00 , A62D3/00
Abstract: A method of decomposing dioxin compounds, such as polychlorodibenzo-p-dioxins and polychlorodibenzofurans, contained in a waste material into unharmful substances, wherein the waste material is treated with a supercritical water at a temperature higher than the critical temperature of water and a pressure higher than the critical pressure of water.
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公开(公告)号：GB2314079B
公开(公告)日：2000-06-28
申请号：GB9706070
申请日：1997-03-24
Applicant: AGENCY IND SCIENCE TECHN
Inventor： SAKO TAKESHI , SATO MASAHITO , SUGETA TSUTOMU , OTAKE KATSUTO , TSUGUMI MASAYUKI
IPC: A62D3/20 , A62D3/38 , A62D101/08 , A62D101/22 , A62D101/26 , A62D101/28 , B09B3/00 , A62D3/00
Abstract: A method of decomposing dioxin compounds, such as polychlorodibenzo-p-dioxins and polychlorodibenzofurans, contained in a waste material into unharmful substances, wherein the waste material is treated with a supercritical water at a temperature higher than the critical temperature of water and a pressure higher than the critical pressure of water.
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Patent Agency Ranking
公开(公告)号：GB2314079A
公开(公告)日：1997-12-17
申请号：GB9706070
申请日：1997-03-24
Applicant: AGENCY IND SCIENCE TECHN
Inventor： SAKO TAKESHI , SATO MASAHITO , SUGETA TSUTOMU , OTAKE KATSUTO , TSUGUMI MASAYUKI
IPC: A62D3/20 , A62D3/38 , A62D101/08 , A62D101/22 , A62D101/26 , A62D101/28 , B09B3/00 , A62D3/00
Abstract: A method of decomposing dioxin compounds, such as polychlorodibenzo-p-dioxins and polychlorodibenzofurans, contained in a waste material into unharmful substances, wherein the waste material is treated with a supercritical water at a temperature higher than the critical temperature of water and a pressure higher than the critical pressure of water.
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公开(公告)号：JP2001039908A
公开(公告)日：2001-02-13
申请号：JP21448999
申请日：1999-07-29
Applicant: AGENCY IND SCIENCE TECHN , SHIN NIPPON AIR TECH CO LTD
Inventor： SAKO TAKESHI , KANBE MASAZUMI , ISHIDA SEIJI , MIURA KUNIO , TSUGUMI MASAYUKI
Abstract: PROBLEM TO BE SOLVED: To provide a monomer production process from aromatic polyester of any kinds without screening through the continuous operations. SOLUTION: Aromatic polyester and a monohydric alcohol are continuously charged into a reaction vessel 4 and the inside of the reactor is kept under the supercritical conditions of the monohydric alcohol thereby allowing the aromatic polyester to react with the supercritical monohydric alcohol. Then, the aromatic dicarboxylic ester and the dihydric alcohol formed by the above reaction are continuously taken out of the reactor 4 in the state that the aromatic dicarboxylic ester is saturatedly dissolved in the monohydric alcohol, then the aromatic dicarboxylic ester and the dihydric alcohol are separated and recovered from the reaction mixture taken out of the reactor vessel.
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公开(公告)号：JPH11209317A
公开(公告)日：1999-08-03
申请号：JP940198
申请日：1998-01-21
Applicant: AGENCY IND SCIENCE TECHN , SHIN NIPPON AIR TECH CO LTD
Inventor： SAKO TAKESHI , KANZAWA CHIYOJI , SUGATA TAKESHI , OTAKE KATSUTO , TSUGUMI MASAYUKI , SHUDO HARUHISA
Abstract: PROBLEM TO BE SOLVED: To provide a method for recovering monomers from polyethylene terephthalate, harmless to human bodies and natural environment, etc., and capable of simply carrying out separation and recovery, etc. of the monomer under industrially advantageous conditions. SOLUTION: This method for recovering monomers from polyethylene terephthalate comprises obtaining diethyl terephthalate and ethylene glycol which are monomers by reacting polyethylene terephthalate with supper critical ethanol.
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公开(公告)号：JP2000239199A
公开(公告)日：2000-09-05
申请号：JP3839699
申请日：1999-02-17
Applicant: AGENCY IND SCIENCE TECHN , SHIN NIPPON AIR TECH CO LTD
Inventor： SAKO TAKESHI , KANBE MASAZUMI , ISHIDA SEIJI , MIURA KUNIO , TSUGUMI MASAYUKI
Abstract: PROBLEM TO BE SOLVED: To continuously produce a monomer in high yield under a condition in which the recovery and separation of the monomer are simple and industrially advantageous. SOLUTION: An aromatic polyester and a monohydric alcohol are continuously fed to a reaction vessel, and the fed polyester and supercritical monohydric alcohol are reacted while keeping the condition in the reaction vessel to the supercritical condition. The aromatic divalent carboxylic ester and the dihydric alcohol produced by the reaction and dissolved in the supecritical methanol is continuously discharged from the reaction vessel together with the supercritical monohydric alcohol.
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公开(公告)号：JPH09327678A
公开(公告)日：1997-12-22
申请号：JP14694096
申请日：1996-06-10
Applicant: AGENCY IND SCIENCE TECHN
Inventor： SAKO TAKESHI , SATO SHINJI , SUGATA TAKESHI , OTAKE KATSUTO , TSUGUMI MASAYUKI
IPC: A62D3/20 , A62D3/38 , A62D101/08 , A62D101/22 , A62D101/26 , A62D101/28 , B09B3/00 , A62D3/00
Abstract: PROBLEM TO BE SOLVED: To make dioxins harmless by an industrially advantageous method wherein inorg. powder contg. dioxins is dispersed into supercritical water held at least at the critical temp. and at least under the critical pressure and dioxins are decomposed under this condition. SOLUTION: Inorg. powder contg. dioxins, water and open air are filled in a reactor and it is heated at 653-873K being at least critical temp. of water, pref. 653-773K. In this case, the reaction pressure is controlled by wt. of water filled in the reactor and 22-40MPa, pref. 25-35MPa is pref. After a specified reaction time passes, in the case where an oxidizing agent is not incorporated, at least 96.5% dioxins in the reactor are decomposed and in the case where such an oxidizing agent as hydrogen peroxide and oxygen gas is incorporated, at least 98.5% dioxins are decomposed. Thereby, dioxins can be made harmless by an industrially advantageous method without necessitating high reaction temp. and complicated reaction control.
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