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
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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.
Claims8
A process for the production of an alkylphosphonous acid, alkylphosphonous salt or alkylphosphonous ester, 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, wherein the catalyst is a transition metal, transition metal compound or wherein the catalyst system is a transition metal, a transition metal compound, and at least one ligand, wherein the one or more olefins are ethylene, 1-propylene, 1-butene, 1,3-butadiene, 3 methyl-but-1-ene or a mixture thereof, wherein the transition metal and transition metal compound are rhodium, nickel, palladium, platinum or a combination thereof and wherein the partial pressure of the olefin during the reaction is from 0.1 to 10 bar.
Dependencies are inferred from the claim text.