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:
Mar. 30, 2021
Filed:
Mar. 06, 2018
Basf SE, Ludwigshafen am Rhein, DE;
Nicolas Vautravers, Ludwigshafen am Rhein, DE;
Joaquim Henrique Teles, Ludwigshafen am Rhein, DE;
Henning Althoefer, Ludwigshafen am Rhein, DE;
Harald Dietl, Ludwigshafen am Rhein, DE;
Abstract
A process for preparing an anticorrosion component for an antifreeze by oxidizing an oxydiol of the formula (I) with molecular oxygen at a temperature of 20 to 100° C. and a partial oxygen pressure of 0.01 to 2 MPa in the presence of water and of a heterogeneous catalyst. The catalyst contains platinum to form an oxydicarboxylic acid of the formula (II) The process has the steps of conducting the oxidation(a) at a molar ratio of0.002≤(Pt)/[(oxydiol (I))+(oxydicarboxylic acid (II))]≤0.019;(b) at a concentration of water of 50% to 95% by weight in the liquid phase; and(c) at a pH of 1 to 7.