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:
Nov. 09, 1982
Filed:
Mar. 09, 1979
Applicant:
Inventors:
Alberto Paggini, Spino D'Adda, IT;
Ugo Romano, Milan, IT;
Donato Furlone, Novate Milanese, IT;
Domenico Sanfilippo, Milan, IT;
Assignee:
Snamprogetti, S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568867 ;
Abstract
A method is disclosed for obtaining high-purity ethylene glycols in which the improvement consists in reducing the oxygen-containing organic impurities by treating their aqueous solutions as obtained during the processing of ethylene oxide with a solution of an alkali metal borohydride, sodium borohydride being preferred. A definitely alkaline environment is preferred. Ethylene glycols can thus be obtained which are particularly suitable for use in the fibre-manufacturing industry. Such glycols have extremely low UV-absorbance values.