MAGNESIUM-IRON LAYERED DOUBLE HYDROXIDES, THEIR MANUFACTURE AND THEIR USE FOR TREATMENT OF HYPERPHOSPHATAEMIA
There is provided a method of producing a mixed metal compound comprisingat least Mg2+and at least Fe3+having an aluminium content of less than 10000 ppm,having an average crystal size of less than 20nm (200A)comprising the steps of:(a) combining a Mg2+salt and a Fe3+salt with Na2CO3and NaOH to prod...
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| creator | RHODES, Nigel Peter APPLEWHITE, Richard Jonathan MORRISON, James David RICKARD, Christopher John NEWTON, Maurice Sydney |
| description | There is provided a method of producing a mixed metal compound comprisingat least Mg2+and at least Fe3+having an aluminium content of less than 10000 ppm,having an average crystal size of less than 20nm (200A)comprising the steps of:(a) combining a Mg2+salt and a Fe3+salt with Na2CO3and NaOH to produce a slurry, wherein the pH of the slurry is maintained at from 9.5 to 11 , and wherein the Na2CO3is provided at an excess of 0 to 4.0 moles than is required to complete the reaction(b) subjecting the slurry to mixing under conditions providing a power per unit volume of 0.03 to 1.6kW/m3(c) separating the mixed metal compound from the slurry, to obtain a crude product having a dry solid content of at least 10 wt%(d) drying the crude product either by(i) heating the crude product to a temperature of no greater than 150°C and sufficient to provide a water evaporation rate of 0.05 to 1.5 kg water per hour per kg of dry product, or(ii) exposing the crude product to rapid drying at a water evaporation rate of 500 to 50000 kg water per hour per kg of dry product. |
| format | Patent |
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MORRISON, James David ; RICKARD, Christopher John ; NEWTON, Maurice Sydney</creatorcontrib><description>There is provided a method of producing a mixed metal compound comprisingat least Mg2+and at least Fe3+having an aluminium content of less than 10000 ppm,having an average crystal size of less than 20nm (200A)comprising the steps of:(a) combining a Mg2+salt and a Fe3+salt with Na2CO3and NaOH to produce a slurry, wherein the pH of the slurry is maintained at from 9.5 to 11 , and wherein the Na2CO3is provided at an excess of 0 to 4.0 moles than is required to complete the reaction(b) subjecting the slurry to mixing under conditions providing a power per unit volume of 0.03 to 1.6kW/m3(c) separating the mixed metal compound from the slurry, to obtain a crude product having a dry solid content of at least 10 wt%(d) drying the crude product either by(i) heating the crude product to a temperature of no greater than 150°C and sufficient to provide a water evaporation rate of 0.05 to 1.5 kg water per hour per kg of dry product, or(ii) exposing the crude product to rapid drying at a water evaporation rate of 500 to 50000 kg water per hour per kg of dry product.</description><language>eng ; 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APPLEWHITE, Richard Jonathan ; MORRISON, James David ; RICKARD, Christopher John ; NEWTON, Maurice Sydney</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3611131A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2020</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F</topic><topic>HUMAN NECESSITIES</topic><topic>HYGIENE</topic><topic>INORGANIC CHEMISTRY</topic><topic>MEDICAL OR VETERINARY SCIENCE</topic><topic>METALLURGY</topic><topic>PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES</topic><toplevel>online_resources</toplevel><creatorcontrib>RHODES, Nigel Peter</creatorcontrib><creatorcontrib>APPLEWHITE, Richard Jonathan</creatorcontrib><creatorcontrib>MORRISON, James David</creatorcontrib><creatorcontrib>RICKARD, Christopher John</creatorcontrib><creatorcontrib>NEWTON, Maurice Sydney</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>RHODES, Nigel Peter</au><au>APPLEWHITE, Richard Jonathan</au><au>MORRISON, James David</au><au>RICKARD, Christopher John</au><au>NEWTON, Maurice Sydney</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>MAGNESIUM-IRON LAYERED DOUBLE HYDROXIDES, THEIR MANUFACTURE AND THEIR USE FOR TREATMENT OF HYPERPHOSPHATAEMIA</title><date>2020-02-19</date><risdate>2020</risdate><abstract>There is provided a method of producing a mixed metal compound comprisingat least Mg2+and at least Fe3+having an aluminium content of less than 10000 ppm,having an average crystal size of less than 20nm (200A)comprising the steps of:(a) combining a Mg2+salt and a Fe3+salt with Na2CO3and NaOH to produce a slurry, wherein the pH of the slurry is maintained at from 9.5 to 11 , and wherein the Na2CO3is provided at an excess of 0 to 4.0 moles than is required to complete the reaction(b) subjecting the slurry to mixing under conditions providing a power per unit volume of 0.03 to 1.6kW/m3(c) separating the mixed metal compound from the slurry, to obtain a crude product having a dry solid content of at least 10 wt%(d) drying the crude product either by(i) heating the crude product to a temperature of no greater than 150°C and sufficient to provide a water evaporation rate of 0.05 to 1.5 kg water per hour per kg of dry product, or(ii) exposing the crude product to rapid drying at a water evaporation rate of 500 to 50000 kg water per hour per kg of dry product.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F HUMAN NECESSITIES HYGIENE INORGANIC CHEMISTRY MEDICAL OR VETERINARY SCIENCE METALLURGY PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES |
| title | MAGNESIUM-IRON LAYERED DOUBLE HYDROXIDES, THEIR MANUFACTURE AND THEIR USE FOR TREATMENT OF HYPERPHOSPHATAEMIA |
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