公开(公告)号：DE69205030D1

公开(公告)日：1995-11-02

申请号：DE69205030

申请日：1992-02-28

Applicant: UBE INDUSTRIES

Inventor： NISHIHIRA KEIGO ,  TANAKA SHUJI ,  KODAMA KUNIOKI ,  KANEKO TAKAYOSHI

IPC: B01J29/14 ,  C07B61/00 ,  C07C68/00 ,  C07C69/96

公开(公告)号：CA2086400A1

公开(公告)日：1993-09-07

申请号：CA2086400

申请日：1993-03-03

Applicant: UBE INDUSTRIES

Inventor： NISHIHIRA KEIGO ,  TANAKA SHUJI ,  KODAMA KUNIOKI ,  KANEKO TAKAYOSHI ,  KAWASHITA TETSURO ,  NISHIDA YUKI ,  MATSUZAKI TOKUO ,  ABE KOJI

IPC: C07C68/00 ,  C07C69/96

Abstract: s: Disclosed is a process for preparing carbonic diester comprising the formation of carbonic diester by the vapor phase catalytic reaction of an alkyl nitrite and carbon monoxide in the presence of a solid catalyst, wherein platinum group metal ion in the solid catalyst is exchanged on an ion exchange zeolite carrier.

公开(公告)号：DE69205030T2

公开(公告)日：1996-03-21

申请号：DE69205030

申请日：1992-02-28

Applicant: UBE INDUSTRIES

Inventor： NISHIHIRA KEIGO ,  TANAKA SHUJI ,  KODAMA KUNIOKI ,  KANEKO TAKAYOSHI

IPC: B01J29/14 ,  C07B61/00 ,  C07C68/00 ,  C07C69/96

公开(公告)号：ES2077264T3

公开(公告)日：1995-11-16

申请号：ES92103454

申请日：1992-02-28

Applicant: UBE INDUSTRIES

Inventor： NISHIHIRA KEIGO ,  TANAKA SHUJI ,  KODAMA KUNIOKI ,  KANEKO TAKAYOSHI

IPC: B01J29/14 ,  C07B61/00 ,  C07C68/00 ,  C07C69/96

公开(公告)号：JPH0543517A

公开(公告)日：1993-02-23

申请号：JP1086792

申请日：1992-01-24

Applicant: UBE INDUSTRIES

Inventor： NISHIHIRA KEIGO ,  TANAKA HIDEJI ,  KODAMA KUNIOKI ,  KANEKO TAKAYOSHI

IPC: B01J29/14 ,  C07B61/00 ,  C07C68/00 ,  C07C69/96

Abstract: PURPOSE:To obtain a carbonic acid diester useful as a raw material for aromatic polycarbonate, etc., or as a solvent in high selectivity and yield under mild reaction condition without causing the corrosion of the reaction apparatus while keeping the catalyst in highly active state over a long period. CONSTITUTION:A carbonic acid diester is produced by the vapor-phase reaction of carbon monoxide and a nitrous acid ester. The reaction is carried out under mild condition by using a catalyst produced by exchanging the alkali metal ion, alkaline-earth metal ion, hydrogen ion or ammonium ion of a zeolite with (i) a platinum group metal ion (preferably Pd, Pt, In, Ru or Rh, especially Pd) and (ii) one or more metal ions selected from Cu, Fe, Sn, Ni, Co, Ce, Ag and Mn, preferably from Cu, Fe and Mn, especially Cu. The objective compound can be produced in high selectivity and yield by the use of the above catalyst. Since the catalyst is free from chlorine, there is no corrosion of the reaction apparatus and the catalytic life can remarkably be prolonged.

公开(公告)号：JPH04202160A

公开(公告)日：1992-07-22

申请号：JP33010690

申请日：1990-11-30

Applicant: UBE INDUSTRIES

Inventor： NISHIHIRA KEIGO ,  TANAKA HIDEJI ,  KODAMA KUNIOKI

IPC: C07C201/04 ,  C07C203/00

Abstract: PURPOSE:To suppress formation of impurities and to obtain the title high-purity compound simply, inexpensively and in high yield by reacting a nitrite with an aliphatic monohydric alcohol while adjusting pH of the reaction solution with nitric acid instead of sulfuric acid. CONSTITUTION:4-6C aliphatic monofunctional alcohol is blended with an aqueous solution of an alkali metal salt (preferably sodium salt) of nitrous acid and maintained at 0-30 deg.C, preferably 0-15 deg.C while stirring. An aqueous solution of nitric acid is dripped to the mixed solution until the pH value of the water phase of the prepared reaction solution becomes 1-3. After the water phase of the prepared reaction solution is separated and removed, the organic phase is washed with water until the washed solution becomes pH >=4.