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:
Oct. 25, 1977
Filed:
Nov. 29, 1973
Applicant:
Inventors:
Assignee:
Societa' Italina Resine S.I.R. S.p.A., Milan, IT;
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
26034834 ;
Abstract
Ethylene oxide is prepared by supplying a gaseous mixture containing ethylene, oxygen and a moderator of the oxidation reaction to a first reaction zone containing a silver-based catalyst, cooling the gas stream leaving this zone, supplying it after enrichment with oxygen and moderator to a second reaction zone containing the silver-based catalyst, recovering ethylene oxide and recycling the residual gases after being combined with fresh reacting gases, the reaction temperature of the second zone being at least 5.degree. C less than the temperature of the first zone.