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:
Aug. 03, 2021
Filed:
Nov. 07, 2017
Covestro Deutschland Ag, Leverkusen, DE;
Thomas Rölle, Leverkusen, DE;
Horst Berneth, Leverkusen, DE;
Dennis Hönel, Zülpich-Wichterich, DE;
Friedrich-Karl Bruder, Krefeld, DE;
Covestro Deutschland AG, Leverkusen, DE;
Abstract
Provided herein is a process for preparing triaryl organoborates proceeding from alkyl or cycloalkyl boronates in the presence of an n-valent cation 1/n Kto obtain organoborates of the formula 1/n KRB—R(IV), where one equivalent of organoboronic ester of the formula B—R(OR)(OR) (I) is initially charged together with 1/n equivalents of salt KnX(II) and 3 equivalents of metal M in a solvent or a solvent mixture, 3 equivalents of a haloaromatic R—Y (III) are added, and optionally a second organic solvent water is added and the compound 1/n KRB—R(IV) is separated off with the organic phase, and to the use of these substances as co-initiator in photopolymer formulations.