Clariant Finance (Bvi) Limited

Clariant Produkte (Deutschland) Gmbh

Clariant International Ltd

Clariant Produkte Gmbh

Robert Janssen

Matthias Krull

Werner Reimann

The invention relates to the use of at least one oil-soluble compound B) which acts as a nucleating agent for paraffin crystallization and which is selected from ethylene copolymers and 2 to 10.5 mole % of at least one ethylenically unsaturated carbonic ester for improving the response of cold flow improvers for mineral oils C), which are different from B), in middle distillates that contain at least one ashless, nitrogenous detergent additive A), which is an oil-soluble, amphiphilic compound that comprises at least one alkyl or alkenyl group bound to a polar group, said alkyl or alkenyl group having 10 to 500 C atoms and the polar group having 2 or more nitrogen atoms.

Detergent additive-containing mineral oils having improved cold flow properties

The invention relates to the use of at least one oil-soluble olefin copolymer B) which acts as a nucleating agent for paraffin crystallization for improving the response of cold flow improvers for mineral oils C), which are different from B), in middle distillates that contain at least one ashless, nitrogenous detergent additive A), which is an oil-soluble, amphiphilic compound that comprises at least one alkyl or alkenyl group bound to a polar group, said alkyl or alkenyl group having 10 to 500 C atoms and the polar group having 2 or more nitrogen atoms.

The invention relates to the use of at least one oil-soluble compound B) which acts as a nucleating agent for paraffin crystallization and which is selected from substantially linear hydrocarbons with at least 22 C atoms, for improving the response of cold flow improvers for mineral oils C) in middle distillates that contain at least one ashless, nitrogenous detergent additive A), which is an oil-soluble, amphiphilic compound that comprises at least one alkyl or alkenyl group bound to a polar group, said alkyl or alkenyl group having 10 to 500 C atoms and the polar group having 2 or more nitrogen atoms.

The invention provides for the use of at least one oil-soluble polyoxyalkylene compound, this polyoxyalkylene compound being an oil-soluble ester, ether or ether/ester of alkoxylated polyols having at least three repeat alkoxy units derived from alkylene oxides having from 2 to 5 carbon atoms per OH group of the polyol which bears at least two aliphatic hydrocarbon radicals having from 12 to 30 carbon atomsfor improving the response behavior of mineral oil cold flow improvers in middle distillates which comprise at least one ashless, nitrogen-containing detergent additivewhich is an oil-soluble amphiphilic compound which comprises at least one alkyl or alkenyl radical which is bonded to a polar group, the alkyl or alkenyl radical comprising from 10 to 500 carbon atoms and the polar group comprising 2 or more nitrogen atoms.

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Bad Soden, Germany

Robert Janssen