Basf Se Corporation

Basf Aktiengesellschaft

Ludwig Völkel

Arno Lange

Alfred Oftring

Christian Bittner

Thomas Weiss

Bernhard Steinmetz

Rainer Dyllick-Brenzinger

Ivette Garcia Castro

Wolfgang Grabarse

Günter Oetter

Hansgeorg Ernst

Aaron Flores-Figueroa

Wolfgang Schrof

Markus Hansch

Maxim Peretolchin

Dietmar Posselt

Marc Walter

Stefan Becker

Andrea Misske

Frank Dietsche

Norbert Wagner

Christian Wulff

Nawid Kashani-Shirazi

Karl Beck

Ingo Münster

Cordula Mock-Knoblauch

Martin Scholtissek

Christian Tock

Boris Gaspar

Klaus Mühlbach

Klaus Krämer

Christian Lockemann

Muriel Ecormier

Susanne Petrovic

Hannah Maria König

Lysander Chrisstoffels

Matthias Klüglein

Dirk Rettemeyer

Michael Stösser

Oliver Hasselwander

Jörg Schröder

Andreas Fechtenkötter

Harald Böhnke

Karin Schein

Arno Kochner

Christian Seitz

Ulrike Sindel

Cornelia Röger-Göpfert

Jan Strittmatter

Björn Thomas Hahn

Hannah Maria KÖNIG

John V Sherman

Siegbert Brand

Klaus MÜHLBACH

Thomas Hayden

An olefin-carboxylic acid copolymer, containing at least one free carboxylic acid side group, or a nitrogen compound quaternized with epoxide in the presence of an olefin-carboxylic acid copolymer, containing at least one free carboxylic acid side group, can be used as a fuel additive or lubricant additive. Processes can be used for preparing additives of this kind and fuels and lubricants additized therewith, such as a detergent additive. These additives, fuels, and lubricants can be used for reduction or prevention of deposits in injection systems of direct injection diesel engines, especially in common rail injection systems; for reduction of fuel consumption of direct injection diesel engines, especially of diesel engines with common rail injection systems; and for minimization of power loss in direct injection diesel engines, especially in diesel engines with common rail injection systems. The additives can also be used for gasoline fuels, especially for operation of DISI engines.

Polycarboxylic acid-based additives for fuels and lubricants

The present invention relates to the use of an olefin-carboxylic acid copolymer, wherein the copolymer comprises at least one free carboxylic acid side group, or of a nitrogen compound quaternized with epoxide in the presence of an olefin-carboxylic acid copolymer, wherein the copolymer comprises at least one free carboxylic acid side group, as a fuel additive or lubricant additive; to processes for preparing additives of this kind, and to fuels and lubricants additized therewith; such as, more particularly, as a detergent additive; for reduction or prevention of deposits in the injection systems of direct injection diesel engines, especially in common rail injection systems, for reduction of the fuel consumption of direct injection diesel engines, especially of diesel engines with common rail injection systems, and for minimization of power loss in direct injection diesel engines, especially in diesel engines with common rail injection systems; and as an additive for gasoline fuels, especially for operation of DISI engines.

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&#xb0; 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&#xb0; C., and optionally (C) heating the reaction product from (B) to 125 to 280&#xb0; C. The resulting polytetrahydrobenzoxazines and bistetrahydrobenzoxazines are suitable as fuel or lubricant additives, especially as detergent additives for diesel fuels.

Polytetrahydrobenzoxazines and bistetrahydrobenzoxazines and use thereof as a fuel additive or lubricant additive

The present invention relates to the use of at least one heterocyclic compound of the formula (I) in which R is H or C-C-alkylas a frictional wear-reducing additive in fuel compositions; to corresponding additized fuel compositions and their preparation; and to additive concentrates which comprise such compounds.

Heterocyclic compounds containing nitrogen as a fuel additive in order to reduce abrasion

Crystalline ascorbate, in particular choline ascorbate in the form of crystals free from water of crystallization, processes for its preparation, and its used are described.

Crystalline choline ascorbate

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Limburgerhof, Germany

Ludwig Völkel