US 12,077,486 B2 · Quaternary fatty amidoamine detergents

Abstract

The invention relates to specific quaternary amidoamine detergents, the process to make them, and their use. The quaternary amidoamine detergents are obtainable by reacting a multifunctional acid with an amino amine, followed by quaternization, suitably with dimethyl carbonate, and subsequent reaction with a fatty acid. In the process to make the quaternary amidoamine detergents a multifunctional fatty acid is reacted with an amino amine, typically an amino alkylene amine, followed by quaternization with a quaternizing agent and subsequent replacement of the anion of said quaternizing agent with a fatty acid anion. The quaternary fatty amidoamine detergents are particularly useful as a surface-active compound that is soluble in an a-polar medium, for example when used as a stabilizer for solids in an a-polar medium.

Claims19

Dependent claims

Quaternary amidoamine obtained by

forming amidoamines by reacting one or more multifunctional fatty acids comprising from 8 to 26 carbon atoms per acid function of said multifunctional fatty acids with on average from 1.1 to 6.0 acid groups, with one or more amino amines of formula II)
(alkyl)2N-(alkylene-NX)nH II)
wherein each alkyl independently is selected from methyl, ethyl, propyl, and butyl, wherein each alkylene independently is selected from methylene, ethylene, propylene or (iso)butylene, and each X, independently, is H or C1-4 alkyl and n is 1, 2, 3, 4, 5, or 6,
followed by
quaternizing amine functions of the amidoamine with a quaternizing agent that is halogen-free, sulfur-free, and phosphate-free to form a quaternary ammonium compound, and
subsequently reacting the quaternary ammonium compound with one or more fatty acids comprising 8 to 26 carbon atoms to exchange an anion of the quaternizing agent by an anion of said fatty acid.

3 more elements

Dependencies are inferred from the claim text.

Quaternary fatty amidoamine detergents

Life of this patent

Quaternary fatty amidoamine detergents

Life of this patent

Abstract

Claims19