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:
May. 19, 1992
Filed:
Aug. 22, 1990
Applicant:
Inventors:
Elias Suokas, Espoo, FI;
Reijo Aksela, Oulu, FI;
Assignee:
Kemira OY, Helsinki, FI;
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423588 ; 25218212 ; 25218643 ;
Abstract
The invention concerns a method for producing hydrogen peroxide using a process based on anthraquinone derivatives. According to the invention the solvent system of the working solution in said process contains carbamate having a general formula ##STR1## where groups R.sup.1 and R.sup.2, which can be the same or different ones, are a hydrogen atom or a hydrocarbon group and R.sup.3 is a hydrocarbon group, whereby the groups R.sup.1, R.sup.2 and R.sup.3 can optionally be part of a cyclic structure and/or substituted by groups which are inert to the process.