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. 11, 1976
Filed:
Oct. 04, 1973
August Sommer, Herne, DT;
Martin Urban, Gelsenkirchen-Buer, DT;
Veba-Chemie AG, Gelsenkirchen-Buer, DT;
Abstract
A water-free mixture of isopropyl alcohol, diisopropyl alcohol, diisopropyl ether and by-products is made by the catalytic hydration of propylene in the gaseous phase at temperatures of 140.degree.-170.degree.C under pressures of 25-40 atmospheres gauge. A water-to-propylene molar ratio of 0.1 to 0.25:1 is maintained in the hydration reaction. The crude product from the hydration reaction is dehydrated or dewatered in two columns without using a foreign withdrawing agent. Instead, diiosopropyl ether formed in the process itself is utilized as the withdrawing agent which is subsequently added to the water-free mixture together with additionally formed by-products. The water-free mixture formed according to the process can be used directly as an additive to gasoline fuel for motor vehicles.