Use of substituted ureas or urethanes for improvement of the use properties of mineral and synthetic nonaqueous industrial fluids

Patent metadata

Field	Value
Publication number	US-2016010020-A1
Application number	US-201313783708-A
Country	US
Kind code	A1
Filing date	Mar 4, 2013
Priority date	Mar 7, 2012
Publication date	Jan 14, 2016
Grant date	—

Abstract

The use of substituted diureas, polyureas, bisurethanes or polyurethanes of the formula R 1 X—CO—NR 3 R 4 in which X is R 2 N or O and R 1 to R 4 are each independently hydrogen, alkyl radicals, alkenyl radicals, cycloalkyl radicals, aryl radicals or arylalkyl radicals, where at least one variable must be a radical having at least 4 carbon atoms and where the urea or urethane functionality must be replicated via bridging members, for improvement of the use properties of mineral and synthetic nonaqueous industrial fluids.

First claim

1 . The use of substituted ureas or urethanes of the general formula (I)
R 1 X—CO—NR 3 R 4   (I)

in which the variable X is R 2 N or O and the variables R 1 to R 4 are each independently hydrogen, C 1 - to C 30 -alkyl radicals which may be interrupted by one or more oxygen atoms, C 3 - to C 30 -alkenyl radicals, C 5 - to C 30 -cycloalkyl radicals, C 6 - to C 30 -aryl radicals or C 7 - to C 30 -arylalkyl radicals, where at least one of the variables R 1 to R 4 must be a radical having at least 4 carbon atoms and where one or more of the variables R 1 to R 4 must be a radical of the formula (Ia)
-A-(X′—CO-A′) n -X′—CO—NR 6 R 7   (Ia)

in which the variables A and A′ are each an aliphatic, cycloaliphatic, aromatic or aliphatic-aromatic bridging element having 1 to 20 carbon atoms, the variable X′ is NR 5 or O, the variable n is an integer from 0 to 50 and the variables R 5 , R 6 and R 7 are each independently hydrogen, C 1 - to C 30 -alkyl radicals which may be interrupted by one or more oxygen atoms, C 3 - to C 30 -alkenyl radicals, C 5 - to C 30 -cycloalkyl radicals, C 6 - to C 30 -aryl radicals or C 7 - to C 30 -arylalkyl radicals, where one or more of the variables R 5 to R 7 may be a radical having at least 4 carbon atoms, for improvement of the use properties of mineral and synthetic nonaqueous industrial fluids.

2 . The use of substituted ureas or urethanes of the general formula (I) according to claim 1 , in which the variable A in the formula (Ia) is 3,5,5-trimethylcyclohexan-1-ylene-3-methylene, 1,6-hexamethylene, 2,4-tolylene, 2,6-tolylene, dicyclohexylmethan-4,4′-ylene or diphenylmethan-4,4′-ylene.

3 . The use of substituted ureas or urethanes of the general formula (I) according to claim 1 or 2 , in which the variable X is R 2 N where R 2 is a radical of the formula (Ia) in which the variable n is 0, the variables R 1 , R 3 , R 5 and R 7 are each hydrogen and the variables R 4 and R 6 are each the same C 4 - to C 30 -alkyl radical which may be interrupted by one or more oxygen atoms, C 4 - to C 30 -alkenyl radical, C 5 - to C 30 -cycloalkyl radical, C 6 - to C 30 -aryl radical or C 7 - to C 30 -arylalkyl radical.

4 . The use of substituted ureas or urethanes according to claims 1 to 3 for improvement of the cold flow properties and/or the lubrication properties and/or the conductivity and/or the oxidation insensitivity and/or the dispersion characteristics of mineral oils and crude oils.

5 . The use of substituted ureas or urethanes of the general formula (I) according to claims 1 to 3 for improvement of the cold flow properties and/or the lubrication properties of fuels, especially of middle distillate fuels.

6 . The use of substituted ureas or urethanes of the general formula (I) according to claim 5 for dispersion or for promoting dispersion of paraffin crystals which precipitate out of fuels under cold conditions.

7 . The use of substituted ureas or urethanes of the general formula (I) according to claim 5 in combination with at least one organic compound which improves the cold flow characteristics of middle distillate fuels and is selected from
(a1) copolymers of a C 2 - to C 40 -olefin with at least one further ethylenically unsaturated monomer;
(a2) comb polymers;
(a3) polyoxyalkylenes;
(a4) polar nitrogen compounds;
(a5) sulfocarboxylic acids or sulfonic acids or derivatives thereof; and
(a6) poly(meth)acrylic esters.

8 . The use of substituted ureas or urethanes of the general formula (I) according to claims 1 to 3 for improvement of the cold flow properties and/or the lubrication properties of mineral and synthetic lubricants and lubricant formulations produced therefrom.

9 . A lubricant formulation produced from mineral and synthetic lubricants, comprising at least one substituted urea or one substituted urethane of the general formula (I) according to claims 1 to 3 and at least one further additive component customary for lubricant formulations.

10 . A mixture comprising
(i) 1 to 99% by weight of at least one substituted urea or substituted urethane of the general formula (I) according to claims 1 to 3 , (ii) 0 to 50% by weight of at least one further organic compound which is suitable for dispersion or for promoting dispersion of paraffin crystals which precipitate out of mineral oils or crude oils under cold conditions and (iii) 1 to 99% by weight of at least one organic compound which improves the cold flow characteristics of mineral oils or crude oils, where the sum of all components (i) to (iii) adds up to 100% by weight.

11 . The use of the mixture according to claim 10 as an additive to fuels, especially to middle distillate fuels.

12 . A fuel, especially middle distillate fuel, comprising a mixture according to claim 10 .

13 . The fuel according to claim 12 , comprising, as further additives in amounts customary therefor, flow improvers, further paraffin dispersants, conductivity improvers, anticorrosion additives, lubricity additives, antioxidants, metal deactivators, antifoams, demulsifiers, detergents, cetane number improvers, solvents or diluents, dyes or fragrances or mixtures thereof.

14 . A fuel additive concentrate comprising 10 to 70% by weight, based on the total amount of the concentrate, of a mixture according to claim 10 , dissolved in a hydrocarbon solvent.

15 . The fuel additive concentrate according to claim 14 , comprising, as further additives in amounts customary therefor, flow improvers, further paraffin dispersants, conductivity improvers, anticorrosion additives, lubricity additives, antioxidants, metal deactivators, antifoams, demulsifiers, detergents, cetane number improvers, solvents or diluents, dyes or fragrances or mixtures thereof.

Assignees

• Basf Se
• Basf Se

Inventors

• Strittmatter Jan
• Haeberle Karl
• Grabarse Wolfgang
• Garcia Castro Ivette
• Hansch Markus
• Troetsch-Schaller Irene
• Schenk Stephan
• Schroers Michael
• Lange Bernhard

Classifications

• C10M2203/1006

  used as base material · CPC title

• C07C275/04

  having nitrogen atoms of urea groups bound to acyclic carbon atoms · CPC title

• C10L10/08

  for improving lubricity; for reducing wear · CPC title

• C10L10/14 Primary

  for improving low temperature properties · CPC title

• C10L2200/0446

  Diesel · CPC title