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:
Apr. 14, 2015
Filed:
Dec. 07, 2011
Arno Lange, Duerkheim, DE;
Harald Böhnke, Mannheim, DE;
Wolfgang Grabarse, Mannheim, DE;
Hannah Maria König, Mannheim, DE;
Markus Hansch, Speyer, DE;
Ludwig Völkel, Limburgerhof, DE;
Ivette Garcia Castro, Ludwigshafen, DE;
Arno Lange, Duerkheim, DE;
Harald Böhnke, Mannheim, DE;
Wolfgang Grabarse, Mannheim, DE;
Hannah Maria König, Mannheim, DE;
Markus Hansch, Speyer, DE;
Ludwig Völkel, Limburgerhof, DE;
Ivette Garcia Castro, Ludwigshafen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Polytetrahydrobenzoxazines and bistetrahydrobenzoxazines, obtainable by (A) reacting at least one diamine of the formula HN-A-NHwith a C- to C-aldehyde and a C- to C-alkanol at 20 to 80° C. with elimination and removal of water, (B) reacting the condensation product from (A) with a phenol which bears a long-chain substituent at 30 to 120° C., and optionally (C) heating the reaction product from (B) to 125 to 280° C. The resulting polytetrahydrobenzoxazines and bistetrahydrobenzoxazines are suitable as fuel or lubricant additives, especially as detergent additives for diesel fuels.