Aluminum Hydrogen Phosphites, A Process for Preparing Them and Their Use
AssigneeClariant Finance (BVI) Limited
InventorsHarald Bauer, Sebastian Hoerold, Martin Sicken
Life of this patent
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Abstract
The invention relates to aluminum hydrogenphosphites of the formula (I) Al2.00(HPO3)v(H2PO3)y×(H2O) (I) in which v is 2 to 2.99, y is 2 to 0.01 and z 0 to 4; to a process for preparation thereof and to the use thereof.
Claims15
An aluminum hydrogenphosphite of the formula (I)
- Al2.00(HPO3)v(H2PO3)y×(H2O)z (I)
- wherein
- v is 2 to 2.99,
- y is 2 to 0.01 and
- z is 0 to 4.
A process for preparing aluminum hydrogenphosphites of the formula (I)
- Al2.00(HPO3)v(H2PO3)y×(H2O)z (I)
- wherein
- v is 2 to 2.99,
- y is 2 to 0.01 and
- z is 0 to 4.
- comprising the step of reacting, in a ratio of 2.5 to 3.5 mol, a phosphorus source with 2 mol of an aluminum source at 50 to 300° C. without using a solvent.
An intermediate for further synthesis, a binder, a crosslinker or accelerator in the curing of epoxy resins, polyurethanes, 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 a electronic composition comprising an aluminum hydrogenphosphite of the formula (I)
- Al2.00(HPO3)(H2PO3)y×(H2O)z (I)
- wherein
- v is 2 to 2.99,
- y is 2 to 0.01 and
- z is 0 to 4.
A flame retardant, a flame retardant for clearcoats and intumescent coatings, a flame retardant for wood and other cellulosic products, a reactive and nonreactive flame retardant for polymers, a flame-retardant polymer molding composition, a flame-retardant for rendering polyester and pure and blended cellulose fabrics flame-retardant by impregnation, a synergist or a synergist in flame-retardant mixtures and flame retardants comprising an aluminum hydrogenphosphite of the formula (I)
- Al2.00(HPO3)v(H2PO3)y×(H2O)z (I)
- wherein
- v is 2 to 2.99,
- y is 2 to 0.01 and
- z is 0 to 4.
A flame-retardant thermoplastic or thermoset polymer molding composition or polymer molding, film, filament or fiber comprising 0.1 to 45% by weight of an aluminum hydrogenphosphite of the formula (I)
- Al2.00(HPO3)v(H2PO3)y×(H2O)z (I)
- wherein
- v is 2 to 2.99,
- y is 2 to 0.01 and
- z is 0 to 4, 55 to 99.9% 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 0.1 to 45% by weight of a flame retardant mixture comprising 0.1 to 50% by weight of an aluminum hydrogenphosphite of the formula (I)
- Al2.00(HPO3)v(H2PO3)y×(H2O)z (I)
- wherein
- v is 2 to 2.99,
- y is 2 to 0.01 and
- z is 0 to 4, 50 to 99.9% by weight of a flame retardant, 55 to 99.9% 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.
Dependencies are inferred from the claim text.