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:
Nov. 01, 2016
Filed:
Dec. 09, 2013
Basf SE, Ludwigshafen, DE;
Stephan Hueffer, Ludwigshafen, DE;
Andreas Kramer, Friedelsheim, DE;
Frank Dietsche, Schriesheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
In a method of preparing polyalkyleneimines from alkyleneimines in the presence of a liquid solvent, and a catalyst, the preparing is effected semi-discontinuously in one reaction container. The preparing is optionally effected in the presence of further additives. Polyalkyleneimines obtained by such methods and formulations thereof likewise form part of the subject matter of the invention, especially those having a low proportion of chloride-containing compounds. Such polyalkyleneimines have uses in the field of medical technology, printing media, wastewater treatment, surface treatment, cosmetics, laundry detergents, biotechnology, packaging, electronics, paper, building construction chemistry, textiles, chromatography, ion exchangers, oil industry, ceramics, glass, membrane technology, catalysts, electroplating, biocides or wood protection. Further possible uses include as corrosion inhibitor, dispersant, additive in oils, for formulation of drugs, haircare products, scents and aromas, for preparing gene vectors, for functionalizing and modifying surfaces in electroplating and medical technology or for preparing cleaning systems for the semiconductor industry and lithium batteries.