Processing

Please wait...

Settings

Settings

Goto Application

1. FR2902096 - PROCEDE DE PREPARATION DE DIHYDROXYBENZENEDISULFONATES METALLIQUES

Office France
Application Number 0605242
Application Date 13.06.2006
Publication Number 2902096
Publication Date 14.12.2007
Grant Number
Grant Date 18.03.2011
Publication Kind B1
IPC
C07C 309/42
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
309Sulfonic acids; Halides, esters, or anhydrides thereof
01Sulfonic acids
28having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
41containing singly-bound oxygen atoms bound to the carbon skeleton
42having the sulfo groups bound to carbon atoms of non-condensed six-membered aromatic rings
C07C 303/06
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
303Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
02of sulfonic acids or halides thereof
04by substitution of hydrogen atoms by sulfo or halosulfonyl groups
06by reaction with sulfuric acid or sulfur trioxide
C07C 303/32
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
303Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
32of salts of sulfonic acids
CPC
C07C 303/06
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
303Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
02of sulfonic acids or halides thereof
04by substitution of hydrogen atoms by sulfo or halosulfonyl groups
06by reaction with sulfuric acid or sulfur trioxide
C07C 303/32
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
CACYCLIC OR CARBOCYCLIC COMPOUNDS
303Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
32of salts of sulfonic acids
Applicants RHODIA RECHERCHES & TECH
Inventors DURY MICHEL
BRES HERVE
Priority Data 0605242 13.06.2006 FR
Title
(FR) PROCEDE DE PREPARATION DE DIHYDROXYBENZENEDISULFONATES METALLIQUES
Abstract
(FR)
La présente invention a pour objet un procédé perfectionné de préparation de dihydroxybenzènedisulfonates métalliques, de préférence de métaux alcalins, à partir d'acides dihydroxybenzènedisulfoniques correspondants.Le procédé de préparation d'un dihydroxybenzènedisulfonate métallique selon l'invention, à partir d'un acide dihydroxybenzènedisulfonique correspondant est caractérisé par le fait qu'il comprend la réaction de l'acide dihydroxybenzènedisulfonique présent en milieu sulfurique avec une quantité suffisante d'un sel comprenant un anion sulfate ou hydrogénosulfate.