The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 1981
Filed:
May. 22, 1979
Applicant:
Inventors:
Assignee:
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
203 92 ; 203 95 ; 568768 ; 568810 ;
Abstract
In the process for obtaining a concentrate of resorcin by acid-decomposing m-diisopropylbenzene hydroperoxide in an inert solvent in the presence of an acidic solid catalyst and distilling off acetone and the inert solvent from the resulting acid-decomposition reaction mixture, if water is added to this reaction mixture in an amount of 20 to 70% by weight based on resorcin and the reaction mixture is then subjected to distillation, resorcin can be obtained at a high recovery yield.