Mixtures Of At Least One Dialkylphosphinic Acid With At Least One Other Dialkylphosphinic Acid That Is Different Therefrom, Method For Production Thereof, And Use Thereof
AssigneeClariant Finance (BVI) Limited
InventorsFabian Schneider, Frank Osterod, Harald Bauer, Martin Sicken
Life of this patent
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Abstract
The invention relates to a mixture of at least one dialkylphosphinic acid of the formula (I) in which R1, R2 are the same or different and are each C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl, C7-C18-alkylaryl, with at least one different dialkylphosphinic acid of the formula (II) in which R3, R4 are the same or different and are each C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl and/or C7-C18-alkylaryl, with the proviso that at least one of the R3 and R4 radicals is different than R1 and R2.
Claims23
A mixture of at least one dialkylphosphinic acid of the formula (I)
- wherein
- R1, R2 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with at least one different dialkylphosphinic acid of the formula (II)
- wherein
- R3, R4 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with the proviso that at least one of the R3 and R4 radicals is different than R1 and R2.
A process for preparing a mixture of at least one dialkylphosphinic acid of the formula (I)
- wherein
- R1, R2 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with at least one different dialkylphosphinic acid of the formula (II)
- wherein
- R3, R4 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with the proviso that at least one of the R3 and R4 radicals is different than R1 and R2, comprising the steps of reacting a phosphorus source with an initiator and an olefin and treating the alkylated phosphorus compound thus obtained with a mineral acid and converting it, by concentration and workup, to a mixture of at least one dialkylphosphinic acid of the formula (I) and at least one different dialkylphosphinic acid of the formula (II).
An intermediate for further syntheses, a binder, a crosslinker or accelerator in the curing of epoxy resins, polyurethanes and unsaturated polyester resins, a polymer stabilizer, a crop protection composition, a sequestrant, a mineral oil additive, an anticorrosive, a washing composition, a cleaning composition or an electronic composition comprising a mixture of at least one dialkylphosphinic acid of the formula (I)
- wherein
- R1, R2 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with at least one different dialkylphosphinic acid of the formula (II)
- wherein
- R3. R4 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with the proviso that at least one of the R3 and R4 radicals is different than R1 and R2.
A flame retardant, as a flame retardant for clearcoats and intumescent coatings, a flame retardant for wood and other cellulosic products, a reactive and a nonreactive flame retardant for polymers, a flame-retardant polymer molding a flame-retardant for rendering polyester and pure and blended cellulose fabrics flame-retardant by impregnation, or a synergist comprising a mixture of at least one dialkylphosphinic acid of the formula (I)
- wherein
- R1, R2 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with at least one different dialkylphosphinic acid of the formula (II)
- wherein
- R3, R4 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with the proviso that at least one of the R3 and R4 radicals is different than R1 and R2.
A flame-retardant thermoplastic or thermoset polymer molding composition or polymer molding, film, filament or fiber comprising 0.5 to 45% by weight of a mixture of at least one dialkylphosphinic acid of the formula (I)
- wherein
- R1, R2 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with at least one different dialklophosphinic acid of the formula (II)
- wherein
- R3, R4 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with the proviso that at least one of the R3 and R4 radicals is different than R1 and R2, 0.5 to 99.5% by weight of thermoplastic or thermoset polymer or mixtures thereof, 0 to 55% by weight of additives and 0 to 55% by weight of filler or a reinforcing material, where the sum of the components is 100% by weight.
A flame-retardant thermoplastic or thermoset polymer molding composition or polymer molding, film, filament or fiber comprising 1 to 30% by weight of a mixture of at least one dialkylphosphinic acid of the formula (I)
- wherein
- R1, R2 are the same or different and are C1-C18-alkyl. C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with at least one different dialkylphosphinic acid of the formula (II)
- wherein
- R3, R4 are the same or different and are C1-C18-alkyl, C2-C18-alkenyl, C6-C18-aryl or C7-C18-alkylaryl,
- with the proviso that at least one of the R3 and R4 radicals is different than R1 and R2, 10 to 95% by weight of thermoplastic or thermoset polymer or mixtures thereof, 2 to 30% by weight of additives and 2 to 30% by weight of filler or a reinforcing material, where the sum of the components is 100% by weight.
Dependencies are inferred from the claim text.