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:
Dec. 16, 2014
Filed:
Jun. 24, 2011
Wolfgang Grabarse, Mannheim, DE;
Hannah Maria Koenig, Mannheim, DE;
Christian Tock, Alzingen, LU;
Cornelia Roeger-goepfert, Schwetzingen, DE;
Ludwig Voelkel, Limburgerhof, DE;
Harald Boehnke, Mannheim, DE;
Wolfgang Grabarse, Mannheim, DE;
Hannah Maria Koenig, Mannheim, DE;
Christian Tock, Alzingen, LU;
Cornelia Roeger-Goepfert, Schwetzingen, DE;
Ludwig Voelkel, Limburgerhof, DE;
Harald Boehnke, Mannheim, DE;
Basf SE, Ludwigshafen, DE;
Abstract
A quaternized copolymer obtainable by: (A) copolymerization of straight-chain, branched or cyclic, ethylenically unsaturated Cto Chydrocarbons, which may bear oxygen- or nitrogen-functional substituents which cannot be reacted with amines to give amides or imides or with alcohols to give esters, with ethylenically unsaturated C- to C-mono- or dicarboxylic acids or acid derivatives, which can be reacted with amines to give amides or imides or with alcohols to give esters, to give a copolymer with a number-average molecular weight of 500 to 20 000; (B) partial or full amidation or imidation or esterification of the carboxylic acid functions by reacting them with oligoamines having 2 to 6 nitrogen atoms or alcoholamines, each of which comprises primary or secondary nitrogen atom or a hydroxyl group and a quaternizable tertiary nitrogen atom; (C) partial or full quaternization of the tertiary nitrogen atom with a quaternizing agent. The quaternized copolymer thus prepared is suitable as a fuel additive in direct-injection diesel engines.