公开(公告)号：US3664936A

公开(公告)日：1972-05-23

申请号：US3664936D

申请日：1970-05-08

Applicant: ASAHI CHEMICAL IND

Inventor： SEKO MAOMI ,  YOMIYAMA AKIRA ,  TAKAHASHI YASUNOBU ,  SETA SHIGETOSHI ,  NAKAGAWA KOJI

IPC: C25B3/10 ,  C07B29/06 ,  C07C121/26

CPC classification number: C25B3/105

Abstract: A method of producing adiponitrile by electrolytic hydrodimerization of acrylonitrile which comprises conducting the electrolysis while purifying the catholyte by recovering the conductive supporting salt in the waste catholyte by means of a cation exchange resin.

Abstract translation: 一种通过丙烯腈的电解加氢聚合生产己二腈的方法，其包括在通过阳离子交换树脂回收废弃阴极电解液中的导电支撑盐的同时对电解液进行纯化进行电解。

公开(公告)号：US3647855A

公开(公告)日：1972-03-07

申请号：US3647855D

申请日：1969-02-25

Applicant: ASAHI CHEMICAL IND

Inventor： SEKO MAOMI ,  TAKAHASHI YASUNOBU ,  IWAMOTO TAKEAKI ,  SENO SHIKAZO

CPC classification number: C07C255/00 ,  Y02P20/582

Abstract: PURIFICATION OF CRUDE ADIPONITRILE CONTAINING ACRYLONITRILE, PROPIONITRILE, HYDROZYPROPIONITRILE AND BIS-CAYANOETHYL ETHER (BCE) BY DECOMPOSING THE BCE BY TREATING THE CRUDE AT ABOUT 0 TO 400*C. IN THE PRESENCE OF PREFERABLY ABOUT 0.001 TO 0.1 MOLE OF A POLYVALENT METAL CATALYST IN A VALENCE STATE OF AT LEAST 3 PER MOLE OF BCE. THE METAL CATALYST IS AT LEAST ONE COMPOUND OF CHROMINUM, MANGANESES, MOLYBDENUM, TUNGSTEN, AND/OR RHENIUM. THE METAL CATALYST MAY BE AN OXIDE OR ALKALI METAL, ALKALINE EARTH METAL, OR AMMONIUM COMPOUNDS CONTAINING AS THE ANIONIC PORTION THEREOF AN OXYGEN-POLYVALENT METAL MOIETY WHERE THE POLYVALENT METALIS AS STATED ABOVE. SUTIABLE ANIONS INCLUD CHROMATES, MANGANATES, ETC.; BICHROMATES, PERMANGANATES, ECT.; MONOSUBSITUTED CHROMIC SULFATE, MONOSUBSTITUTED MANGANIC SULFATE, ETC.

公开(公告)号：US3462394A

公开(公告)日：1969-08-19

申请号：US3462394D

申请日：1967-10-24

Applicant: ASAHI CHEMICAL IND

Inventor： ISHIDA SHIN ICHI ,  KATO TOSHIO ,  KURIHARA MASAKAZU ,  TAKAHASHI YASUNOBU ,  FUKUDA HIROMICHI

IPC: C08G2/32 ,  C08G1/22

CPC classification number: C08G2/32

公开(公告)号：US3896154A

公开(公告)日：1975-07-22

申请号：US41202073

申请日：1973-11-01

Applicant: ASAHI CHEMICAL IND

Inventor： TAKAHASHI YASUNOBU ,  SEKO MAOMI ,  IDE AKIRA ,  MATUMOTO SOZIRO ,  NISHIGAKI TAKASHI

IPC: C08G18/00 ,  C07C67/00 ,  C07C241/00 ,  C07C265/14 ,  C08G18/30 ,  C08G18/73 ,  C08G18/78 ,  C08G18/80 ,  C09D175/00 ,  C07C119/042

CPC classification number: C08G18/8045 ,  C08G18/305 ,  C08G18/73

Abstract: An aliphatic polyisocyanate is prepared by adding water to a mixture containing an aromatic hydrocarbon or a nucleus substituted derivative thereof and hexamethylene diisocyanate, which is preliminarily heated at a temperature in the range from 100* to 140*C, under agitation in an amount of 3/1 to 2/1 in terms of molar ratio of hexamethylene diisocyanate to water to react with hexamethylene diisocyanate at said temperature.

公开(公告)号：US3499874A

公开(公告)日：1970-03-10

申请号：US3499874D

申请日：1966-10-17

Applicant: ASAHI CHEMICAL IND

Inventor： TAKAHASHI YASUNOBU ,  FUKUOKA YOHEI

IPC: C08G69/08 ,  F02B61/04 ,  C08G20/06

CPC classification number: C08G69/08 ,  F02B61/045