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1. WO1999000324 - SOLUBLE ACID POLYPHOSPHATES AND DEVICE FOR THEIR PRODUCTION

Publication Number WO/1999/000324
Publication Date 07.01.1999
International Application No. PCT/EP1998/003823
International Filing Date 23.06.1998
Chapter 2 Demand Filed 16.01.1999
IPC
A23C 19/082 2006.1
AHUMAN NECESSITIES
23FOODS OR FOODSTUFFS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
CDAIRY PRODUCTS, e.g. MILK, BUTTER, CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
19Cheese; Cheese preparations; Making thereof
06Treating cheese curd after whey separation; Products obtained thereby
068Particular types of cheese
08Process cheese preparations; Making thereof, e.g. melting, emulsifying, sterilizing
082Adding substances to the curd before or during melting; Melting salts
C01B 25/41 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
25Phosphorus; Compounds thereof
16Oxyacids of phosphorus; Salts thereof
26Phosphates
38Condensed phosphates
40Polyphosphates
41of alkali metals
CPC
A23C 19/082
AHUMAN NECESSITIES
23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
CDAIRY PRODUCTS, e.g. MILK, BUTTER, CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
19Cheese; Cheese preparations; Making thereof
06Treating cheese curd after whey separation; Products obtained thereby
068Particular types of cheese
08Process cheese preparations; Making thereof, e.g. melting, emulsifying, sterilizing
082Adding substances to the curd before or during melting; Melting salts
C01B 25/41
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
25Phosphorus; Compounds thereof
16Oxyacids of phosphorus; Salts thereof
26Phosphates
38Condensed phosphates
40Polyphosphates
41of alkali metals
Applicants
  • BK GIULINI CHEMIE GMBH UND CO. OHG [DE]/[DE] (AllExceptUS)
  • KLEIN, Thomas [DE]/[DE] (UsOnly)
  • STAFFEL, Thomas [DE]/[DE] (UsOnly)
  • MAURER, Alexander [DE]/[DE] (UsOnly)
  • WAHL, Friedrich [DE]/[DE] (UsOnly)
Inventors
  • KLEIN, Thomas
  • STAFFEL, Thomas
  • MAURER, Alexander
  • WAHL, Friedrich
Priority Data
197 27 144.826.06.1997DE
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) LÖSLICHE, SAURE POLYPHOSPHATE UND VERFAHREN UND VORRICHTUNG ZU IHRER HERSTELLUNG
(EN) SOLUBLE ACID POLYPHOSPHATES AND DEVICE FOR THEIR PRODUCTION
(FR) POLYPHOSPHATES ACIDES SOLUBLES ET DISPOSITIF UTILISE POUR LEUR FABRICATION
Abstract
(DE) Die Erfindung betrifft ein Verfahren zur Herstellung von löslichen sauren Polyphosphaten mit einem Na/P-Verhältnis von 0,3 bis 0,6, einem P2O5-Gehalt von über 77 Gew.-%, einem Na2O-Gehalt von unter 20 % und einem Restwassergehalt von 3 bis 10 %, bei dem man zur Bildung kettenförmiger Polyphosphate mit mittleren Kettenlängen von 10 bis 30 eine wäßrige Lösung der Phosphate eintrocknet und bei Temperaturen von 400 bis 600° 30 bis 180 Minuten aufschmilzt und die Schmelze unter Bildung eines glasigen Produktes abkühlt, wobei während des Schmelzens ein Wasserdampfdruck der mit der Schmelze in Berühung stehenden Atmosphäre von 0,1 bis 0,5 bar aufrechterhalten wird, die nach diesem Verfahren herstellbaren Polyphosphate und ihre Verwendung.
(EN) The invention relates to a method for producing soluble acid polyphosphates with an Na/P ratio of 0.3 to 0.6, a P2O5 content of over 77 %wt., a Na2O content of under 20 % and a residual water content of 3-10 %. The invention is characterized in that an aqueous phosphate solution is dried in order to form chain-like polyphosphates with an average chain length of 10 to 30, and then fused for 30-180 minutes at temperatures of 400-600 °C. The fusion is cooled, forming a vitreous product. During fusion, steam pressure of 0.1 to 0.5 bar is maintained in the atmosphere in contact with the fusion. The invention also relates to the polyphosphates produced by this method and to their use.
(FR) L'invention concerne un procédé de fabrication de polyphosphates acides solubles de rapport Na/P de 0,3 à 0,6, ayant une teneur en P2O5 supérieure à 77 % en poids, une teneur en Na2O inférieure à 20 % et une teneur en eau résiduelle de 3 à 10 %, caractérisé en ce qu'on sèche une solution aqueuse de phosphate en vue de former des polyphosphates en chaînes, de longueur de chaînes moyenne comprise entre 10 et 30, on effectue la fusion à des températures de 400 à 600 °C pendant 30 à 180 minutes et on refroidit le composé fondu, ce qui donne lieu à la formation d'un produit vitreux, et en ce qu'on maintient, pendant la fusion, une pression de vapeur d'eau dans l'atmosphère en contact avec le composé fondu, comprise entre 0,1 et 0,5 bar. L'invention concerne également les polyphosphates fabriqués suivant ce procédé, ainsi que leur utilisation.
Related patent documents
US09446733This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.
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