ES249144A1 - A procedure for the preparation of 4,4'-dichlorodyphenyl sulphone (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of 4,4'-dichlorodyphenyl sulphone (Machine-translation by Google Translate, not legally binding)
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Sanofi Aventis France
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Roussel Uclaf SA
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Publication of ES249144A1publicationCriticalpatent/ES249144A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
A process for the preparation of 4,4'-dichlorodiphenylsulfone, characterized in particular by the fact that by the action of two molecules of sulfuric anhydride stabilized in the form of a trimer on dimethyl sulfate, a solution of one molecule of sulfuric anhydride is prepared in one molecule of methyl pyrosulfate, this hot solution is reacted on two molecules of chlorobenzene and the sulfone formed in water is precipitated. (Machine-translation by Google Translate, not legally binding)
ES0249144A1958-07-051959-05-04A procedure for the preparation of 4,4'-dichlorodyphenyl sulphone (Machine-translation by Google Translate, not legally binding)
ExpiredES249144A1
(en)
Procedure for the manufacture of proto-cellulose of woods of frondosas through simple cooking with solution anhydride sulfuroso (Machine-translation by Google Translate, not legally binding)