Alkylphosphonous Acids, Salts and Esters, Methods for the Production Thereof, and Use of the Same
AssigneeClariant Finance (BVI) Limited
InventorsMichael Hill, Harald Bauer, Werner Krause
Life of this patent
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Abstract
The invention relates to alkylphosphonous acids, salts and esters of formula (I) A-P(═O)(OX)—H (I) wherein A is C2-C20alkyl, C2-C20alkylene, and C8-C20 alkaryl are optionally substituted, and X is H, alkyl, aryl, alkylaryl, alkenyl, substituted alkyl, aryl, alkaryl, alkenyl, ammonium, primary, secondary, tertiary, quaternary alkyl and/or aryl ammonium, an alkali metal, an alkaline earth metal, a metal of the third and fourth main group and the second, fourth and eight sub-group or a metal of the lanthanoid group. The invention also relates to methods for producing same and to the uses of said compounds.
Claims23
An alkylphosphonous acid, alkylphosphonous salt, or alkylphosphonous ester of the formula (I)
- A-P(═O)(OX)—H (I)
- wherein
- A is C2-C20-alkyl, C2-C20-alkylene, C8-C20-alkaryl, optionally substituted, and
- X is H, alkyl, aryl, alkylaryl, alkenyl, substituted alkyl, aryl, alkaryl, alkenyl, ammonium, or primary, secondary, tertiary, or quaternary alkyl- or arylammonium, alkali metal, alkaline earth metal, metal of the third or fourth main group or of the second, fourth or eighth transition group, or a metal of the lanthanoid group.
A process for the production of alkylphosphonous acids, of alkylphosphonous salts, and of alkylphosphonous esters, comprising the step of reacting a source of phosphinic acid with one or more olefins in the presence of a catalyst or a catalyst system, and where the source of phosphinic acid is phosphinic acid, a salt of phosphinic acid, an ester of phosphinic acid, or a mixture of these.
Dependencies are inferred from the claim text.