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:
Sep. 30, 2025
Filed:
Feb. 21, 2020
Basf SE, Ludwigshafen am Rhein, DE;
Piotr Makarczyk, Ludwigshafen am Rhein, DE;
Boris Breitscheidel, Ludwigshafen am Rhein, DE;
Zsolt Szarka, Ludwigshafen am Rhein, DE;
Sonja Judat, Ludwigshafen am Rhein, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
The present invention relates to a process for purifying benzenepolycarboxylic esters and for preparing cyclohexanepolycarboxylic esters by hydrogenating the purified benzenepolycarboxylic esters. The invention further relates to benzenepolycarboxylic esters and cyclohexanepolycarboxylic esters having a small proportion of by-products, especially of dialkyl ethers, and especially to diisononyl cyclohexane-1,2-dicarboxylate having a small proportion of diisononyl ether. The invention also relates to the use of the cyclohexanepolycarboxylic esters as plasticizers, especially in products intended for human contact, such as children's toys, food packaging and medical articles.