-
公开(公告)号：DE3781774T2
公开(公告)日：1993-01-28
申请号：DE3781774
申请日：1987-11-09
Applicant: TOSOH CORP
Inventor： SHUYAMA HIDEO , OGAWA TSUKASA , TAKAHASHI MITSURU , HAMADA MICHIYUKI , YOSHIMITSU MITSUAKI , OYAMA KIYOTAKA
-
公开(公告)号：CA1240340A
公开(公告)日：1988-08-09
申请号：CA437828
申请日：1983-09-28
Applicant: TOSOH CORP
Inventor： KUBO MASASHIGE , YOSHIMITSU MITSUAKI , TSUTSUMI YUKIHIRO
Abstract: The invention is concerned with a process for producing condensed bromoacenaphthylene. The process of the invention comprises the steps of brominating and condensating acenaphthene with bromine in a halogenated hydrocarbon solvent in the presence of a Lewis acid catalyst; removing the Lewis acid catalyst and then continuing the bromination with bromine with an added radical initiator; and carrying out dehydrobromination reaction. The condensed bromoacenaphthylene can be purified by bringing it into contact with an adsorbent in an organic solvent. The process according to the invention is simple and impurities can be removed selectively and easily. The condensed bromoacenaphthylene thus purified does not adhere onto a roller when kneaded with a resin on rollers, supresses breeding from a shaped composition, and shaped compositions produced from the condensate have improved mechanical properties.
-
公开(公告)号：EP3336060A4
公开(公告)日：2018-06-20
申请号：EP16835181
申请日：2016-08-09
Applicant: TOSOH CORP
Inventor： ISHIKAWA TOMOYA , AOYAMA HIDEKAZU , YOSHIMITSU MITSUAKI , MAEHAMA SEIJI , MISHIMA TAKAYOSHI , TAKAMITSU YASUYUKI
IPC: C01B39/48
CPC classification number: C01B39/48
Abstract: Provided is a production method by which an AEI zeolite is obtained without inducing a structural transformation in a crystalline aluminosilicate having a Y-structure and without using fluorine or phosphorus, the method including a crystallization step of crystallizing a composition containing an alumina source, a silica source, a structure directing agent, a sodium source, and water, a weight proportion of crystalline aluminosilicate relative to a total weight of the alumina source and the silica source being from 0 wt.% to 10 wt.%, and the crystallization step satisfying at least one of the following conditions: a molar ratio of hydroxide ion to silica in the composition is 0.45 or greater, the composition contains a cation represented by (CH 3 ) 3 RN + (R represents an alkyl group having from 1 to 4 carbons, and the alkyl group may contain at least one substituent), and the crystallization time is 80 hours or longer.
-
公开(公告)号：MY186254A
公开(公告)日：2021-06-30
申请号：MYPI2018000267
申请日：2016-08-26
Applicant: TOSOH CORP
Inventor： TAKAMITSU YASUYUKI , ISHIKAWA TOMOYA , YOSHIMITSU MITSUAKI
Abstract: Provided is a method for producing an AEI zeolite without the use of a zeolite Y and a raw material containing fluorine and phosphorus, the method including a crystallization step of crystallizing a composition containing a structure directing agent, a sodium source, water, and a zeolite having at least one of the following structures as a silica alumina source.
-
公开(公告)号：MY184911A
公开(公告)日：2021-04-30
申请号：MYPI2018000189
申请日：2016-08-09
Applicant: TOSOH CORP
Inventor： ISHIKAWA TOMOYA , AOYAMA HIDEKAZU , YOSHIMITSU MITSUAKI , MAEHAMA SEIJI , MISHIMA TAKAYOSHI , TAKAMITSU YASUYUKI
Abstract: Provided is a production method by which an AEI zeolite is obtained without inducing a structural transformation in a crystalline aluminosilicate having a Y-structure and without using fluorine or phosphorus, the method including a crystallization step of crystallizing a composition containing an alumina source, a silica source, a structure directing agent, a sodium source, and water, a weight proportion of crystalline aluminosilicate relative to a total weight of the alumina source and the silica source being from 0 wt.% to 1 0 wt.%, and the crystallization step satisfying at least one of the following conditions: a molar ratio of hydroxide ion to silica in the composition is 0.45 or greater, the composition contains a cation represented by (CHJ)JRN+ (R represents an alkyl group having from l to 4 carbons, and the alkyl group may contain at least one substituent), and the crystallization time is 80 hours or longer.
-
Patent Agency Ranking
公开(公告)号：DE3781774D1
公开(公告)日：1992-10-22
申请号：DE3781774
申请日：1987-11-09
Applicant: TOSOH CORP
Inventor： SHUYAMA HIDEO , OGAWA TSUKASA , TAKAHASHI MITSURU , HAMADA MICHIYUKI , YOSHIMITSU MITSUAKI , OYAMA KIYOTAKA
-
公开(公告)号：JPH09291053A
公开(公告)日：1997-11-11
申请号：JP10764196
申请日：1996-04-26
Applicant: TOSOH CORP
Inventor： SOGA SHINICHI , YOSHIMITSU MITSUAKI , ISHIKAWA SHINICHI , EGUCHI HISAO
IPC: C07C37/055 , C07C39/10
Abstract: PROBLEM TO BE SOLVED: To obtain efficiently and inexpensively pyrogallol, which is useful as an intermediate material for production of photograph developing agents, analytical reagents, medicines and agrochemicals through particular three processes. SOLUTION: This production of pyrogallol comprises making phenol react with a brominating agent having at least one N-Br bond to obtain 2,6- dibromophenol (a bromination process), then 2,6-dibromophenol react with a metal alkoxide of the formula ROM (R is a lower alkyl; M is an alkali metal atom) to obtain 2,6-dibromophenol (an alkoxylation process), and lastly 2,6- dibromophenol react with hydrochloric acid and/or hydrobromic acid (a dealkylation process). Preferable brominating agents are amine derivatives of formula I (R is an alkyl; R is H or an alkyl) or formula II (R is an alkyl). A preferable reaction solvent is chlorobenzene.
-
公开(公告)号：JPH0920709A
公开(公告)日：1997-01-21
申请号：JP17484695
申请日：1995-07-11
Applicant: TOSOH CORP
Inventor： YOSHIMITSU MITSUAKI , SOGA SHINICHI , EGUCHI HISAO
IPC: C07C37/055 , C07B61/00 , C07C37/62 , C07C39/24
Abstract: PROBLEM TO BE SOLVED: To efficiently produce 3-bromocatechol useful as a raw material for medicines, agrochemicals, etc., by reacting an alkoxyphenol with a specific brominating agent and then converting the alkoxy group into OH group with a protonic acid or a Lewis acid. SOLUTION: (A) A 2-alkoxyphenol (preferably 2-methoxyphenol or 2- ethoxyphenol) is reacted with (B) a brominating agent having at least one set of N-Br bond, preferably an amine derivative of formula I (R is an alkyl; R is H or an alkyl) or formula II (R is an alkyl) to provide a 2-alkoxy-6- bromophenol. The alkoxy group thereof is subsequently converted into OH group with a protonic acid or a Lewis acid to afford 3-bromocatechol. For example, 2-methoxyphenol is reacted with N-bromo-t-butylamine to provide 2-bromo-6-methoxyphenol. Anhydrous aluminum chloride is then added to the resultant 2-bromo-6-methoxyphenol to afford 3-bromocatechol.
-
公开(公告)号：JP2508763B2
公开(公告)日：1996-06-19
申请号：JP27034987
申请日：1987-10-28
Applicant: TOSOH CORP
Inventor： SHUYAMA HIDEO , TAKAHASHI MITSURU , HAMADA MICHUKI , OGAWA TSUKASA , YOSHIMITSU MITSUAKI , KOYAMA KYOTAKA
-
公开(公告)号：JPH02240036A
公开(公告)日：1990-09-25
申请号：JP6069089
申请日：1989-03-15
Applicant: TOSOH CORP
Inventor： OGAWA TSUKASA , KUBO MASAJI , YOSHIMITSU MITSUAKI
IPC: C07C37/02 , B01J23/72 , B01J27/055 , B01J27/122 , C07B61/00 , C07C39/15
Abstract: PURPOSE:To provide the subject compound at a low temperature for a short time and in a high selectivity by hydrolyzing a 4,4'-dihalogenobiphenyl in an aqueous solution containing an alcohol and a phase transfer catalyst such as a large cyclic polyether. CONSTITUTION:When a 4,4'-dihalogenobiphenyl (the halogen is chlorine or fluorine) is hydrolyzed with an alkali metal hydroxide in the presence of a monovalent and/or divalent copper compound in an aqueous solution containing a 1-3C monovalent alcohol, the hydrolysis reaction is performed in the presence of a compound selected from large cyclic polyethers, quaternary ammonium salt compounds and phosphonium salt compounds (namely a phase transfer catalyst, e.g. 18-crown-6, triethylammonium bromide) to provide biphenyl-4,4'-diol. The method permits to perform the hydrolysis reaction under a mild condition in a state of the reduced load of a purification process without corroding equipments, thereby being profitable.
-
-
-
-
-
-
-
-
-
Search Results
39
records
(took 0.023 seconds)
