公开(公告)号：US3651135A

公开(公告)日：1972-03-21

申请号：US3651135D

申请日：1969-12-01

Applicant: RHONE POULENC SA

Inventor： BOICHARD JACQUES ,  BROSSAR BERNARD PIERRE ,  DUROUX JACQUES MARIUS ,  JANIN RAYMOND MARC CLEMENT

IPC: C07C51/275 ,  C07C55/06

CPC classification number: C07C51/275 ,  C07C55/06

Abstract: OXALIC ACID IS MADE BY OXIDIZING PROPYLENE WITH AT LEAST 50% NITRIC ACID AT 40 TO 80*C.

公开(公告)号：US3607924A

公开(公告)日：1971-09-21

申请号：US3607924D

申请日：1966-09-15

Applicant: RHONE POULENC SA

Inventor： BOICHARD JACQUES ,  BROSSARD BERNARD PIERRE ,  GAY MICHEL LOUIS MARIE JOSEPH ,  JANIN RAYMOND MARC CLEMENT

IPC: C07C59/153 ,  C07C51/00 ,  C07C51/275 ,  C07C67/00 ,  C07C59/30

CPC classification number: C07C51/275 ,  C07C59/153

Abstract: Glyoxylic acid is produced in good yield by oxidizing ethylene with 10 to 14.5 percent aqueous nitric acid.

公开(公告)号：US3562322A

公开(公告)日：1971-02-09

申请号：US3562322D

申请日：1966-06-24

Applicant: RHONE POULENC SA

Inventor： BOICHARD JACQUES ,  BROSSARD BERNARD PIERRE ,  GAY MICHEL LOUIS MARIE JOSEPH ,  JANIN RAYMOND MARC CLEMENT

IPC: C07C51/275 ,  C07C51/32

CPC classification number: C07C51/275 ,  C07C55/06

Abstract: OXALIC ACID IS PREPARED FROM ETHYLENE BY OXIDATION WITH NITRIC ACID. THE CONCENTRATION OF THE NITRIC ACID IS MAINTAINED AT LEAST 16% THROUGHOUT THE REACTION WHICH IS EFFECTED IN THE PRESENCE OF A PALLADIUM OR MERCURY CATALYST.

公开(公告)号：US3428675A

公开(公告)日：1969-02-18

申请号：US3428675D

申请日：1966-07-01

Applicant: RHONE POULENC SA

Inventor： BROSSARD BERNARD PIERRE ,  GAY MICHEL LOUIS MARIE JOSEPH ,  JANIN RAYMOND MARC CLEMENT ,  PICHON LOUIS MARIUS ELIE ,  BOICHARD JACQUES

IPC: C07C51/275 ,  C07C51/20

CPC classification number: C07C51/275 ,  C07C55/06