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1. 发明专利

JPH10101597A PRODUCTION OF CHLORINATED AROMATIC HYDROCARBONS 失效
公开(公告)号：JPH10101597A
公开(公告)日：1998-04-21
申请号：JP25971596
申请日：1996-09-30
申请人： NIPPON LIGHT METAL CO
发明人： SUGIYAMA YUKIHIRO , NOMOTO EIGO , TSUNEIZUMI TOKUJI
IPC分类号： C07B39/00 , C07C17/12 , C07C17/383 , C07C25/02 , C07C25/06 , C07C25/08 , C07C25/10 , C07C25/125
摘要： PROBLEM TO BE SOLVED: To provide a method for producing chlorinated aromatic hydrocarbons by which an organic waste liquor from a hydrochloric acid producing step thereof is dehydrated by distillation to return the resultant dehydrated organic waste liquor as a raw material to a reactional step for reacting aromatic hydrocarbons with chlorine gas or hydrogen chloride gas, and the organic waste liquor from the hydrochloric acid producing step that has been discarded can effectively be utilized in the method for producing the chlorinated aromatic hydrocarbons. SOLUTION: This method for producing chlorinated aromatic hydrocarbons comprises a reactional step for reacting aromatic hydrocarbons with chlorine gas or hydrogen chloride gas and synthesizing the chlorinated aromatic hydrocarbons, an absorbing step for absorbing a waste gas containing the hydrogen chloride formed as a by-product in the reactional step in water and a hydrochloric acid recovering step for carrying out the liquid-liquid separation of an absorbent prepared in the absorbing step and recovering the hydrochloric acid. In this case, the method further comprises a dehydrating step for dehydrating the organic waste liquor recovered when performing the liquid-liquid separation of the absorbent in the hydrochloric acid recovering step to

2. 发明专利

JP2001072621A PRODUCTION OF CHLOROMETHYLSTYRENES 失效
公开(公告)号：JP2001072621A
公开(公告)日：2001-03-21
申请号：JP24878799
申请日：1999-09-02
申请人： NIPPON LIGHT METAL CO , NOF CORP
发明人： NOMOTO EIGO , AITO HIROSHI , NISHIMURA YASUSHI , NAKAMURA TOMOYUKI
IPC分类号： C07C17/25 , C07B39/00 , C07B61/00 , C07C17/14 , C07C17/386 , C07C22/04
摘要： PROBLEM TO BE SOLVED: To provide a method for producing chloromethylstyrenes by which the highly pure chloromethylstyrenes are produced in high yield by an easily operable liquid phase method. SOLUTION: This method for producing chloromethylstyrenes comprises adding hydrogen chloride to methylstyrenes to provide α-chloroethyltoluenes, chlorinating the methyl groups of the obtained α-chloroethyltoluenes to provide α-chloroethylbenzyl chlorides, and dehydrochlorinating the obtained α- chloroethylbenzyl chlorides to provide the objective chloromethylstyrenes.

3. 发明专利

JP2002255869A METHOD FOR PRODUCING CHLORINE-SUBSTITUTED HYDROCARBON COMPOUND 失效
公开(公告)号：JP2002255869A
公开(公告)日：2002-09-11
申请号：JP2001050770
申请日：2001-02-26
申请人： NIPPON LIGHT METAL CO
发明人： NOMOTO EIGO , SUGIYAMA YUKIHIRO , AITO HIROSHI
IPC分类号： C07C17/12 , C07C25/08
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a chlorine-substituted hydrocarbon compound by which hydrogen chloride in the reaction mixture can be precisely removed without complicating the production steps and hardly causing problems of generation of a large amount of cleaning waste water or the like. SOLUTION: This method for producing the chlorine-substituted hydrocarbon compound comprises purifying the reaction mixture having

4. 发明专利

JP2001072622A PRODUCTION OF CHLOROMETHYLSTYRENES 失效
公开(公告)号：JP2001072622A
公开(公告)日：2001-03-21
申请号：JP25256599
申请日：1999-09-07
申请人： NIPPON LIGHT METAL CO , NOF CORP
发明人： NOMOTO EIGO , AITO HIROSHI , UJIGAWA NORIHISA , NAKAMURA TOMOYUKI
IPC分类号： B01J31/26 , C07B61/00 , C07C17/25 , C07C22/04
摘要： PROBLEM TO BE SOLVED: To provide a method for producing chloromethylstyrenes in high yield by dehydrochlorinating α-chloroethylbenzyl chlorides by a liquid phase method. SOLUTION: This method for producing chloromethylstyrenes comprises reacting a metal alkoxide comprising a metal salt of a tertiary alcohol with α-chloroethylbenzyl chlorides in the presence of the tertiary alcohol and a phase transfer catalyst to dehydrochlorinating the α-chloroethylbenzyl chlorides and to provide the objective chloromethylstyrenes. Preferably, the α-chloroethylbenzyl chlorides are p-(α-chloroethyl)benzyl chloride. The phase transfer catalyst is preferably a tertiary ammonium salt, and a cocatalyst is preferably used with the phase transfer catalyst.

5. 发明专利

JP2001072619A INDUSTRIAL PRODUCTION OF CHLOROMETHYLSTYRENES 失效
公开(公告)号：JP2001072619A
公开(公告)日：2001-03-21
申请号：JP24878699
申请日：1999-09-02
申请人： NIPPON LIGHT METAL CO , NOF CORP
发明人： NOMOTO EIGO , AITO HIROSHI , NAKAMURA TOMOYUKI
IPC分类号： C07C17/10 , C07B61/00 , C07C17/383 , C07C22/04
摘要： PROBLEM TO BE SOLVED: To provide an industrial production method of chloromethylstyrenes by which the highly pure chloromethylstyrenes are produced in high yield by a liquid phase method. SOLUTION: This industrial method for producing chloromethylstyrenes comprises a hydrogen chloride-adding step for producing α-chloroethyltoluenes by adding hydrogen chloride to methylstyrenes, a methyl-chlorinating step for producing α-chloroethylbenzyl chlorides by chlorinating the methyl group of the α-chloroethyltoluenes obtained by the hydrogen chloride-adding step, and a heating and dehydrochlorinating step for heating and dehydrochlorinating the α-chloroethylbenzyl chlorides obtained at the methyl-chlorinating step under a distillation condition of the chloromethylstyrenes to distil off the objective chloromethylstyrenes, and optionally has a rectifying step in the presence of a polymerization initiator.

6. 发明专利

JP2002020380A METHOD FOR MANUFACTURING HIGH-PURITY TETRACHLOROPHTHALIC ANHYDRIDE 失效
公开(公告)号：JP2002020380A
公开(公告)日：2002-01-23
申请号：JP2000200680
申请日：2000-07-03
申请人： NIPPON LIGHT METAL CO
发明人： NOMOTO EIGO , HAMABE NOBUHIKO , TAKASHIMA CHIHIRO
IPC分类号： C07D307/89 , C07B61/00
摘要： PROBLEM TO BE SOLVED: To provide a method for industrially manufacturing a high-purity tetrachlorophthalic anhydride whose HCB content is reduced as low as possible. SOLUTION: The method for manufacturing a high-purity tetrachlorophthalic anhydride comprises manufacturing tetrachlorophthalic anhydride by subjecting phthalic anhydride to a nuclear chlorination reaction using chlorine gas in the presence of iodine or iodine chloride in a chlorosulfonic acid solvent. In the reaction, the reaction temperature is controlled at 50-150 deg.C, and the thermal point of the reaction is controlled at a degree of chlorination of 3.90-3.98.

7. 发明专利

JP2000044500A AROMATIC MONO-NUCLEAR CHLORINATION OF ALKYL AROMATIC HYDROCARBON AND ITS AROMATIC NUCLEAR CHLORINATION CATALYST 失效
公开(公告)号：JP2000044500A
公开(公告)日：2000-02-15
申请号：JP21792498
申请日：1998-07-31
申请人： NIPPON LIGHT METAL CO
发明人： NOMOTO EIGO , AITO HIROSHI
IPC分类号： B01J27/10 , C07B61/00 , C07C17/12 , C07C25/06
摘要： PROBLEM TO BE SOLVED: To provide a mono-nuclear chlorination process for an alkylaromatic hydrocarbon with reduced formation of poly-nuclear chlorinated by-products, as a high O/P ratio and high chlorine utilization are retained and a catalyst for mono-nuclear chlorination to be used in this process. SOLUTION: When an alkylaromatic hydrocarbon is mono-nuclear chlorinated with a chlorine gas, a chloride of an element in the group Va in the periodic table is used as a nuclear chlorination catalyst. The catalyst is used in this mono-nuclear chlorination of an alkylaromatic hydrocarbon and mainly comprises a chloride of an element in the group Va in the periodic table.

8. 发明专利

JPH11246449A PRODUCTION OF CHLORINATED AROMATIC HYDROCARBONS 失效
公开(公告)号：JPH11246449A
公开(公告)日：1999-09-14
申请号：JP4352398
申请日：1998-02-25
申请人： NIPPON LIGHT METAL CO
发明人： SUGIYAMA YUKIHIRO , NOMOTO EIGO , TSUNEIZUMI TOKUJI
IPC分类号： C07C17/12 , C07C17/14 , C07C17/38 , C07C17/389 , C07C22/04 , C07C22/06 , C07C25/06 , C07C25/08 , C07C25/10
摘要： PROBLEM TO BE SOLVED: To provide a method for producing chlorinated aromatic hydrocarbons by which an organic waste liquor from a step for producing hydrochloric acid of the method is dehydrated by adsorption, the resultant dehydrated organic waste liquor as a raw material is returned to a step for reacting the aromatic hydrocarbons with chlorine gas or hydrogen chloride gas and the conventionally disposed organic waste liquor from the step for producing the hydrochloric acid can effectively be utilized. SOLUTION: This method for producing chlorinated aromatic hydrocarbons includes a dehydrating step for dehydrating an organic waste liquor recovered at the time of carrying out the liquid-liquid separation of an absorbent in a hydrochloric acid recovering step to

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