公开(公告)号：IN190240B

公开(公告)日：2003-07-05

申请号：IN1032DE1995

申请日：1995-06-06

Applicant: DAICEL CHEM

Inventor： MIURA HIROYUKI ,  SHIMIZU MASAHIKO ,  SATO TAKASHI ,  MORIMOTO YOSHIAKI ,  KAGOTANI MASAHIRO

IPC: C07C51/00 ,  C07C53/00

公开(公告)号：GB2189795A

公开(公告)日：1987-11-04

申请号：GB8708431

申请日：1987-04-08

Applicant: DAICEL CHEM

Inventor： SATO TAKASHI ,  ONTANI KISAKU

IPC: C08G63/08 ,  C08G63/664 ,  C08G63/78 ,  C08G63/66

Abstract: A poly- epsilon -caprolactone resin having an enhanced stability to hydrolysis is obtained by ring-opening polymerization of epsilon -caprolactone with 0.01 to 5.0% by weight, based on the epsilon -caprolactone, of an epichlorohydrin-bisphenol A type epoxy compound of the formula: +TR

公开(公告)号：MY118500A

公开(公告)日：2004-11-30

申请号：MYPI9701658

申请日：1997-04-16

Applicant: DAICEL CHEM

Inventor： MIURA HIROYUKI ,  KAYAJIMA MASANOBU ,  SATO TAKASHI

IPC: B01J39/08 ,  C07C51/42 ,  C07B63/02 ,  C07C51/47 ,  C07C51/573 ,  C07C53/08 ,  C07C53/12

Abstract: AN OBJECT OF THE PRESENT INVENTION IS TO PROVIDE AN OPERATING METHOD WHICH CAN REDUCE THE AMOUNT OF SILVER OR MERCURY DISSOLVED IN A SOLUTION AFTER CONTACT AND CAN INCREASE THE USAGE OF SILVER OR MERCURY WITHOUT INSTALLING NEW TREATING FACILITIES IN A PROCESS FOR REMOVING IODINE COMPOUNDS CONTAINED IN AN ORGANIC MEDIUM, PARTICULARLY ACETIC ACID OR A MIXTURE OF ACETIC ACID OR ACETIC ANHYDRIDE, BY CONTACTING THEM WITH A CATION EXCHANGE RESIN IN WHICH AT LEAST 1OF THE ACTIVE SITES ARE CONVERTED TO A SILVER FORM OR A MERCURY FORM. THE OPERATING METHOD DESCRIBED ABOVE IS CHARACTERIZED BY CARRYING OUT THE OPERATION WHILE ELEVATING THE TEMPERATURES IN STAGES WHILE CONTACTING THE ORGANIC MEDIUM, PARTICULARLY ACETIC ACID OR A MIXTURE OF ACETIC ACID AND ACETIC ANHYDRIDE, CONTAINING THE IODINE COMPOUNDS WITH A CATION EXCHANGE RESIN.

公开(公告)号：BR9502786A

公开(公告)日：1996-03-12

申请号：BR9502786

申请日：1995-06-13

Applicant: DAICEL CHEM

Inventor： MIURA HIROYUKI ,  SHIMIZU MASAHIKO ,  SATO TAKASHI ,  MORIMOTO YOSHIAKI ,  KAGOTANI MASAHIRO

IPC: C07C51/12 ,  C07C51/44 ,  C07C53/08

Abstract: A high purity acetic acid is prepared by reacting methanol with carbon monoxide in the presence of a rhodium catalyst, iodide salts, and methyl iodide, wherein an acetaldehyde concentration in the reaction liquid is maintained at 400 ppm or lower. This may be attained by contacting the liquid containing carbonyl impurities with water to separate and remove the carbonyl impurities. After that, the liquid can be returned to the reactor.

公开(公告)号：DE69505190T3

公开(公告)日：2007-10-31

申请号：DE69505190

申请日：1995-06-13

Applicant: DAICEL CHEM

Inventor： MIURA HIROYUKI ,  SHIMIZU MASAHIKO ,  SATO TAKASHI ,  MORIMOTO YOSHIAKI ,  KAGOTANI MASAHIRO

IPC: C07C51/12 ,  C07C53/08 ,  C07C51/44

Abstract: A high purity acetic acid is prepared by reacting methanol with carbon monoxide in the presence of a rhodium catalyst, iodide salts, and methyl iodide, wherein an acetaldehyde concentration in the reaction liquid is maintained at 400 ppm or lower. This may be attained by contacting the liquid containing carbonyl impurities with water to separate and remove the carbonyl impurities. After that, the liquid can be returned to the reactor.

公开(公告)号：AU2051495A

公开(公告)日：1995-12-21

申请号：AU2051495

申请日：1995-06-06

Applicant: DAICEL CHEM

Inventor： MIURA HIROYUKI ,  SHIMIZU MASAHIKO ,  SATO TAKASHI ,  MORIMOTO YOSHIAKI ,  KAGOTANI MASAHIRO

IPC: C07C51/12 ,  C07C51/44 ,  C07C53/08

Abstract: A high purity acetic acid is prepared by reacting methanol with carbon monoxide in the presence of a rhodium catalyst, iodide salts, and methyl iodide, wherein an acetaldehyde concentration in the reaction liquid is maintained at 400 ppm or lower. This may be attained by contacting the liquid containing carbonyl impurities with water to separate and remove the carbonyl impurities. After that, the liquid can be returned to the reactor.

公开(公告)号：DE3712578C2

公开(公告)日：1999-08-12

申请号：DE3712578

申请日：1987-04-14

Applicant: DAICEL CHEM

Inventor： SATO TAKASHI ,  OTANI KISAKU

IPC: C08G63/08 ,  C08G63/664 ,  C08G63/78 ,  C08G63/42

Abstract: A poly- epsilon -caprolactone resin having an enhanced stability to hydrolysis is obtained by ring-opening polymerization of epsilon -caprolactone with 0.01 to 5.0% by weight, based on the epsilon -caprolactone, of an epichlorohydrin-bisphenol A type epoxy compound of the formula: +TR

公开(公告)号：DE69505190T2

公开(公告)日：1999-03-04

申请号：DE69505190

申请日：1995-06-13

Applicant: DAICEL CHEM

Inventor： MIURA HIROYUKI ,  SHIMIZU MASAHIKO ,  SATO TAKASHI ,  MORIMOTO YOSHIAKI ,  KAGOTANI MASAHIRO

IPC: C07C51/12 ,  C07C51/44 ,  C07C53/08

Abstract: A high purity acetic acid is prepared by reacting methanol with carbon monoxide in the presence of a rhodium catalyst, iodide salts, and methyl iodide, wherein an acetaldehyde concentration in the reaction liquid is maintained at 400 ppm or lower. This may be attained by contacting the liquid containing carbonyl impurities with water to separate and remove the carbonyl impurities. After that, the liquid can be returned to the reactor.

公开(公告)号：SG60062A1

公开(公告)日：1999-02-22

申请号：SG1997001444

申请日：1997-04-16

Applicant: DAICEL CHEM

Inventor： MIURA HIROYUKI ,  KAYAJIMA MASANOBU ,  SATO TAKASHI

IPC: B01J39/08 ,  C07B63/02 ,  C07C51/47 ,  C07C53/08 ,  C07C53/12 ,  B01D15/04

公开(公告)号：AU684005B2

公开(公告)日：1997-11-27

申请号：AU2051495

申请日：1995-06-06

Applicant: DAICEL CHEM

Inventor： MIURA HIROYUKI ,  SHIMIZU MASAHIKO ,  SATO TAKASHI ,  MORIMOTO YOSHIAKI ,  KAGOTANI MASAHIRO

IPC: C07C51/12 ,  C07C51/44 ,  C07C53/08

Abstract: A high purity acetic acid is prepared by reacting methanol with carbon monoxide in the presence of a rhodium catalyst, iodide salts, and methyl iodide, wherein an acetaldehyde concentration in the reaction liquid is maintained at 400 ppm or lower. This may be attained by contacting the liquid containing carbonyl impurities with water to separate and remove the carbonyl impurities. After that, the liquid can be returned to the reactor.