EP1565401A2 - Procede de production de peroxydes alcalino-terreux exempts de poussiere - Google Patents

Procede de production de peroxydes alcalino-terreux exempts de poussiere

Info

Publication number
EP1565401A2
EP1565401A2 EP03788917A EP03788917A EP1565401A2 EP 1565401 A2 EP1565401 A2 EP 1565401A2 EP 03788917 A EP03788917 A EP 03788917A EP 03788917 A EP03788917 A EP 03788917A EP 1565401 A2 EP1565401 A2 EP 1565401A2
Authority
EP
European Patent Office
Prior art keywords
alkaline earth
compacting
dust
free alkaline
peroxides
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03788917A
Other languages
German (de)
English (en)
Inventor
Werner Dötsch
Ernst Buchholz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solvay Chemicals GmbH
Original Assignee
Solvay Interox GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Solvay Interox GmbH filed Critical Solvay Interox GmbH
Publication of EP1565401A2 publication Critical patent/EP1565401A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/04—Metal peroxides or peroxyhydrates thereof; Metal superoxides; Metal ozonides; Peroxyhydrates thereof
    • C01B15/043—Metal peroxides or peroxyhydrates thereof; Metal superoxides; Metal ozonides; Peroxyhydrates thereof of alkali metals, alkaline earth metals or magnesium or beryllium or aluminium

Definitions

  • the present invention relates to a process for producing agglomerates consisting of alkaline earth peroxide, in which primary alkaline earth peroxide particles are subjected to a compacting press agglomeration, and to the alkaline earth peroxide agglomerates obtainable by this process and alkaline earth peroxide granules obtainable therefrom.
  • Alkaline earth metal peroxides essentially mean the products magnesium peroxide, calcium peroxide and barium peroxide and the zinc peroxide chemically related to the products listed.
  • the production of these peroxides is known in the prior art.
  • DE 29 18 137 and DE 196 50 686 describe the production of peroxides by spray drying the respective concentrated suspensions, which were obtained from the reaction of hydrogen peroxide with the corresponding oxides or hydroxides.
  • alkaline earth peroxides are produced which correspond to a particle diameter of 1 -10 ⁇ m and thus have a high degree of fine particle size; Due to this high degree of fineness, the alkaline earth peroxides are very susceptible to dusting, which is associated with major disadvantages when the alkaline earth peroxides are processed in various applications.
  • the object was therefore to produce a more or less low-dust alkaline earth oxide which, on the one hand, has the advantageous properties of the finely divided starting product in later applications, but on the other hand can also be adapted with regard to the chemical properties.
  • the invention proposes a process for the production of alkaline earth peroxide agglomerates, which is characterized in that the finely divided alkaline earth peroxides prepared from known processes are used in the presence of compacting aids which have disintegrating or hydrophobic properties have, compressed by press agglomeration and optionally comminuted the alkaline earth peroxide thus obtained in the form of granules with the desired particle size.
  • alkaline earth metal peroxides to which compacting aids have been added, are subjected to a pressing process and compressed under the action of the pressing pressure used for this purpose, with a simultaneous vacuum in the compression zone.
  • Suitable additives can be added to the alkaline earth peroxides to be compressed with a view to later application.
  • the compacting aid is used in an amount of 0.1 to 10% by weight, preferably 1 to 5% by weight (based on the finished product).
  • compacting aids made from salts of long-chain fatty acids, preferably magnesium montanate, ie substances which have hydrophobic properties, are suitable.
  • the compacted alkaline earth peroxides produced in these two ways can be used directly - whereby a significantly lower dust pollution is to be expected compared to the starting product - or as a slurry - whereby, due to the disintegration agents available, only a very low expenditure of energy is required for resuspending.
  • the temperature range at which the press agglomeration process of the invention can be carried out preferably corresponds to the temperature range in which the alkaline earth metal peroxides used have high thermal stability and the process can be carried out without problems from a safety point of view.
  • the press agglomeration of the very small alkaline earth peroxide particles are e.g. B. in an advantageous embodiment of the invention at temperatures between about 0 to 60 ° C, preferably 20 to 60 ° C.
  • the process can be carried out without problems in this area with regard to the active oxygen content of the alkaline earth peroxide particles to be pressed; active oxygen losses that impair the product are not observed.
  • the process is preferably carried out in a vacuum.
  • the pressure is advantageously a maximum of 0.25 bar.
  • the size of the pressing pressure to be used to achieve the advantages of the invention and the level of the negative pressure to be used can be freely selected within wide limits and can therefore be adapted to special wishes or requirements with regard to the product. According to the lower values, however, the pressing pressure is determined by two specifications: the minimum pressing pressure to be applied should be sufficient to give the agglomerate of the alkaline earth primary particles sufficient strength to avoid annoying dusting in the later application.
  • the pressing pressure to be at least used to achieve the desired properties depends on the type of press machine used and can easily be determined by a person skilled in the art in a few preliminary tests with regard to the desired product properties.
  • the upper limit of the pressing pressure to be applied is not critical and is only limited by the maximum technically achievable or permissible pressing pressure used in the press agglomeration.
  • compression is carried out at pressures of 2.35 t per cm of roll length ( ⁇ 145 bar), with a (air) pressure of at most 0.25 bar being present in the compression zone of the press machine, that is to say working in a vacuum.
  • the agglomerates produced according to the invention can be shaped products, such as. B. tablets or agglomerate, such. B. be granules that are less prone to caking or dusting in use and can therefore be metered well. Both the physical properties such as agglomerate shape or granule shape and size can be adapted according to the requirements as well as the application properties described above. The desired product properties determine the appropriate process.
  • all conventional press agglomeration devices can be used for the method of the invention. Suitable press agglomeration devices are e.g. B. molding presses, punch presses or roller presses. Depending on the press agglomeration device used, the primary particles are under pressure, with simultaneous negative pressure in the compression zone in defined shapes, for. B. tablets or pressed into tight slugs. The slugs are crushed into granules of the desired size.
  • alkaline earth peroxide granules according to the invention are distinguished by the fact that they can be metered well and are low in dust and, depending on the compacting aid, are very easily resuspendable or are difficult to resuspend in granule form due to the hydrophobic properties and thus have an extended oxygen release.
  • the invention provides a simple method for producing dust-free alkaline earth peroxide granules.
  • alkaline earth peroxides produced according to the teaching of DE 29 18 137 and DE 196 50 686 were mixed after admixing additives such as magnesium montanate (manufacturer: Clariant, D-86368 Gersthofen), Arbocell (type TF 0406, a fibrous cellulose, manufacturer: Fa. J. Rettenmaier and Sons, D-73494 Rosenberg) or sodium bicarbonate for press granulation in a lightly structured roller press.
  • magnesium montanate manufactured by Clariant, D-86368 Gersthofen
  • Arbocell type TF 0406, a fibrous cellulose, manufacturer: Fa. J. Rettenmaier and Sons, D-73494 Rosenberg
  • sodium bicarbonate sodium bicarbonate for press granulation in a lightly structured roller press.
  • the primary particles were added with a press pressure of 2 t / cm roll length (-130 bar) to 2.35 t / cm roll length (-145 bar) and a vacuum of 0.75 bar (ie at a pressure of 0.25 bar) pressed into flakes with a thickness of 1 mm and then adjusted to the target grain size with the aid of a crusher using granulating screens.
  • abrasion index 70 g of sample were manually separated from fine fractions on a sieve. Then exactly 50 g were placed on the appropriate sieve (1.0 mm) for 3 min. shaken with the laboratory sieve machine JEL. The resulting fine fraction ⁇ 0.425 mm in [%] indicated the abrasion.
  • IXPER® 75C is a product of Solvay Interox GmbH with at least 75% by weight calcium peroxide.
  • IXPER® 35M is a product of Solvay Interox GmbH with at least 35% by weight magnesium peroxide.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Glanulating (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)

Abstract

L'invention concerne des peroxydes alcalino-terreux exempts de poussière. Selon l'invention, des peroxydes alcalino-terreux sont mélangés avec des agents auxiliaires de compactage et compactés à sec dans un compacteur, par exemple dans une presse à rouleaux. Comme agent auxiliaire de compactage, on utilise du bicarbonate de sodium, de la cellulose, du montanate de magnésium ou des composés de silicone réticulés.
EP03788917A 2002-10-18 2003-09-24 Procede de production de peroxydes alcalino-terreux exempts de poussiere Withdrawn EP1565401A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10248652 2002-10-18
DE10248652A DE10248652A1 (de) 2002-10-18 2002-10-18 Verfahren zur Herstellung von staubfreien Erdalkaliperoxiden
PCT/EP2003/010618 WO2004035470A2 (fr) 2002-10-18 2003-09-24 Procede de production de peroxydes alcalino-terreux exempts de poussiere

Publications (1)

Publication Number Publication Date
EP1565401A2 true EP1565401A2 (fr) 2005-08-24

Family

ID=32049423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03788917A Withdrawn EP1565401A2 (fr) 2002-10-18 2003-09-24 Procede de production de peroxydes alcalino-terreux exempts de poussiere

Country Status (9)

Country Link
US (1) US7488439B2 (fr)
EP (1) EP1565401A2 (fr)
JP (1) JP4478575B2 (fr)
CN (1) CN1299972C (fr)
AU (1) AU2003293317A1 (fr)
BR (1) BR0315321B1 (fr)
CA (1) CA2502652C (fr)
DE (1) DE10248652A1 (fr)
WO (1) WO2004035470A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1762252A1 (fr) * 2005-09-12 2007-03-14 SOLVAY (Société Anonyme) Solution aqueuse se prêtant à la stérilisation de matériaux d'emballage, procédé de préparation, et usage
EP2064156A1 (fr) * 2006-05-30 2009-06-03 Solvay S.A. Produit et procédé pour le traitement de plans d'eau, de sédiments et de sols
DE102020129850A1 (de) 2020-11-12 2022-05-12 Bwt Holding Gmbh Wasserinstallationssystem sowie Verfahren zur Aufbereitung von Trinkwasser
DE102020129852A1 (de) 2020-11-12 2022-05-12 Bwt Holding Gmbh Kartusche sowie Verfahren zur Mineralisierung von Trinkwasser

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2288410A (en) * 1940-11-19 1942-06-30 Bay Chemical Company Inc Stabilization of peroxide
US3490742A (en) * 1966-01-14 1970-01-20 Staley Mfg Co A E Compressed tablets
US3984342A (en) * 1973-11-23 1976-10-05 Fmc Corporation Process for agglomerating sodium carbonate peroxide
LU78545A1 (fr) * 1977-11-18 1979-06-13 Interox Particules solides de peroxyde de calcium et leur utilisation pour le traitement des eaux
DE2918137A1 (de) 1979-05-05 1980-11-20 Peroxid Chemie Gmbh Verfahren zur herstellung von alkali- oder erdalkaliperoxiden
US4601866A (en) * 1979-11-19 1986-07-22 Chinoin Process for tablet production
FR2471222A1 (fr) * 1979-12-12 1981-06-19 Interox Procede pour la stabilisation de particules contenant des composes peroxygenes et compositions de blanchiment contenant des particules stabilisees selon ce procede
US4405486A (en) * 1981-08-31 1983-09-20 Warner-Lambert Company Method for preparing granulated perborate salts containing a polymeric fluorocarbon
US4971782A (en) * 1983-09-14 1990-11-20 Peroxydent Group Periodontal composition and method
EP0199855A1 (fr) * 1985-05-02 1986-11-05 Gist-Brocades N.V. Comprimés contenant de la triméthothoprime et un sulfonamide
US5433959A (en) * 1986-02-13 1995-07-18 Takeda Chemical Industries, Ltd. Stabilized pharmaceutical composition
IT1201136B (it) * 1987-01-13 1989-01-27 Resa Farma Compressa per uso farmaceutico atta al rilascio in tempi successivi di sostanze attive
DE4018037A1 (de) * 1990-02-10 1991-08-14 Peroxid Chemie Gmbh Verfahren zur herstellung von peroxoborat-agglomeraten
DE4217920C2 (de) * 1992-05-30 1996-05-09 Goldwell Gmbh Verfahren zur Herstellung von pulverförmigen Mitteln zum Blondieren von menschlichen Haaren
CA2103683C (fr) * 1992-08-17 1998-06-16 George Weeks Methode anti-poussiere et compositions produites grace a ladite methode
US5599525A (en) * 1994-11-14 1997-02-04 Colgate Palmolive Company Stabilized dentifrice compositions containing reactive ingredients
DK0914818T3 (da) * 1996-06-14 2005-07-04 Kyowa Hakko Kogyo Kk Intraoralt hurtigt desintegrerbar tablet
DE19650686A1 (de) 1996-12-06 1998-06-10 Solvay Interox Gmbh Erdalkalimetallperoxid-Produkt
US20010014352A1 (en) * 1998-05-27 2001-08-16 Udit Batra Compressed tablet formulation
DE19857816C2 (de) * 1998-12-15 2001-02-01 Bionorica Arzneimittel Gmbh Fließfähige, pressfertige Arzneimittelvorprodukte für Tabletten, Pellets und Dragees, sowie Verfahren zu deren Herstellung
US20030161879A1 (en) * 1999-06-29 2003-08-28 Shinji Ohmori Tablets quickly disintegrating in mouth
US6858725B1 (en) * 1999-11-12 2005-02-22 R.P. Scherer Technologies, Inc. Microcrystalline cellulose cushioning granules
US6358526B1 (en) * 2000-08-16 2002-03-19 Rexall Sundown Method of making tablets and tablet compositions produced therefrom

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004035470A2 *

Also Published As

Publication number Publication date
DE10248652A1 (de) 2004-04-29
BR0315321A (pt) 2005-08-16
BR0315321B1 (pt) 2011-11-16
CN1299972C (zh) 2007-02-14
HK1081937A1 (en) 2006-05-26
US7488439B2 (en) 2009-02-10
CA2502652C (fr) 2012-01-31
WO2004035470A3 (fr) 2004-07-15
JP4478575B2 (ja) 2010-06-09
WO2004035470A2 (fr) 2004-04-29
CA2502652A1 (fr) 2004-04-29
JP2006502948A (ja) 2006-01-26
AU2003293317A1 (en) 2004-05-04
CN1688507A (zh) 2005-10-26
US20050239679A1 (en) 2005-10-27

Similar Documents

Publication Publication Date Title
DE69706537T2 (de) Verfahren zur herstellung von hohlen kieselsäureteilchen
DE69704360T2 (de) Zusammensetzung enthaltend nanofibrillen von cellulose und carboxylierte cellulose mit niedriegem substitutionsgrad
DE1667627C3 (de) Verfahren zur Herstellung von aktiven Ton oder !einteiliger Kieselsäure
EP0075818B2 (fr) Activateur de blanchiment granulaire
DE69606255T3 (de) Verfahren zur herstellung von fällungskieselsäure, zinkenthaltenden fällungskieselsäuren und deren verwendung zur verstärkung von elastomeren
DE69207727T2 (de) Verfahren zur Herstellung von Salzgranulaten
DE69022450T2 (de) Calciumcarbonatagglomerat niedriger Dichte.
DE3217751C2 (fr)
EP2531178B1 (fr) Carbonate d'hydroxyde de magnésium compressible par voie direct
DE2650225A1 (de) Verfahren zur herstellung von granulatfoermigem natriumperborat-monohydrat und das dabei erhaltene produkt
DE2512099C3 (fr)
DE3324740C2 (de) Verfahren zur Darstellung von Kieselsäuregel
EP1565401A2 (fr) Procede de production de peroxydes alcalino-terreux exempts de poussiere
DE2421489C2 (de) Verfahren zur Herstellung von Fermentations-Polysacchariden mit einer nicht faserigen Struktur
EP3507244B1 (fr) Procédé de préparation de granulats de chlorure de potassium
DE19900156A1 (de) Verfahren zur Herstellung eines qualitativ hochwertigen Pulvers aus amorpher Kieselsäure
DE69310289T2 (de) Herstellung von geförmten Zirkoniumoxid-Teilchen
EP1064331A1 (fr) Granules de suie
DE69721266T2 (de) Verwendung von kieselsäure aus dem abbau von bikarbonat kontrollierendem wirkstoff, mischung daraus und ihre verwendung
DE2435226C2 (de) Backhefepräparat
EP0939072A1 (fr) Formiate de calcium en morceaux
EP0446597B1 (fr) Procédé pour la fabrication d'agglomérats de peroxoborate
DE3035820A1 (de) Verfahren zur herstellung von granulierten alkalidi- oder -triphosphaten
EP0273334B1 (fr) Procédé pour la production de concentrés de peracides s'écoulant librement, stable à partir de granulation à rendre compact
DE3418748A1 (de) Verfahren zur herstellung kieselsaeurereicher poroeser formkoerper sowie deren verwendung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20050518

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SOLVAY CHEMICALS GMBH

17Q First examination report despatched

Effective date: 20090211

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20161209