Process for the preparation of alk(en)ylphosphoric ester salts
AssigneeClariant Produkte (Deutschland) GmbH
InventorsWolfgang Stehr, Matthias Loeffler, Roman Morschhaeuser
Life of this patent
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Abstract
A process for the preparation of alk(en)ylphosphonc ester salts of the formula (I) and/or of the formula (II) is described, in which R1 and R2 are identical or different and, independently of one another, are a linear or branched alkyl radical having 1 to 30 carbon atoms or are a linear or branched alkenyl radical having 2 to 30 carbon atoms and Xn+ is a cation with the valence n, which comprises reacting alk(en)ylphosphoric esters of the formula (Ill) and/or of the formula (IV) in which R1 and R2 have the meaning given above, in an aprotic solvent or aprotic solvent mixture with a base from which the cation Xn+ comes.
Claims19
A process for the preparation of an alk(en)ylphosphoric ester salt of the-formula (I) or of the formula (II) or mixtures thereof
- wherein
- n is 1,2, or 3,
- R1 and R2 are identical or different and, independently of one another, are a linear or branched alkyl radical having 1 to 30 carbon atoms or are a linear or branched alkenyl radical having 2 to 30 carbon atoms and
- Xn+ is a cation with the valence n,
- comprising the step of reacting an alk(en)ylphosphoric ester of the formula (III) or of the formula (IV) or mixtures thereof
- wherein
- R1 and R2 have the meaning given above,
- with a base in an aprotic solvent or aprotic solvent mixture,
- wherein the aprotic solvent or the aprotic solvent mixture is chosen from aliphatic hydrocarbons, cyclic hydrocarbons, aromatic solvents and mixtures of said solvents, and
- wherein the cation Xn+ comes from the base.
Dependencies are inferred from the claim text.