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:
Jul. 14, 2015
Filed:
Nov. 29, 2012
Basf S.e., Ludwigshafen, DE;
Jochen Mezger, Lautersheim, DE;
Burkhard Walther, Garching, DE;
Joanna Mecfel-Marczewski, Limburgerhof, DE;
Rainer Klopsch, Worms, DE;
BASF SE, Ludwigshafen, DE;
Abstract
An improved process is proposed for preparing cyclocarbonate-functionalized compounds of the general formula (I) where Rand Rin each occurrence are independently selected from hydrogen, methyl and ethyl, l in each occurrence independently is from 2 to 50, m in each occurrence independently is 0 or 1, and n is =3, subject to the proviso that the sum of all l values in the molecule is from 5 to 100, by reacting a chloroformate of formula (II) with a trifunctional amine of the general formula (III) characterized in that the reacting is carried out in an aqueous/organic two-phase system in the presence of an auxiliary base and of a phase transfer catalyst.