Method of acylating amino acids and uses of N-acyl amino acid products
AssigneeNewSouth Innovations Pty Limited
InventorsRichard Mark Pashley, Mojtaba Taseidifar
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Abstract
The present invention relates to a method of preparing N-acyl amino acids selected from N-acyl cysteine compounds, N-acyl serine compounds, N-acyl aspartic acid compounds and N-acyl glutamic acid compounds. The present invention also relates to the use of N-acyl cysteine, N-acyl serine, N-acyl aspartic acid and N-acyl glutamic acid surfactants, in removing per- and poly-fluoroalkyl substances (PFASs) from mixtures containing PFASs, such as soil and groundwater contaminated with PFASs and for use in cleaning compositions, detergent compositions and toothpaste compositions.
Claims13
A method of removing one or more per- and poly-fluoroalkyl substances (PFASs) from an aqueous phase comprising one or more PFASs, the method comprising dissolving in the aqueous phase a foaming agent of Formula (Ia):
- or a salt thereof,
- wherein R1 is SH, OH, CO2H or CH2CO2H;
- and
- Ra is a C5-C10 alkyl group, a C5-C10 alkenyl group, a C5-C10 alkynyl group, a fluorinated C5-C10 alkyl group, a fluorinated C5-C10 alkenyl group or a fluorinated C5-C10 alkynyl group;
- forming a foam from the aqueous phase and a gas;
- and
- separating the foam from the aqueous phase.
Dependencies are inferred from the claim text.