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WO2020126012A1 - Composition à base de bicarbonate de sodium et d'acides gras - Google Patents

Composition à base de bicarbonate de sodium et d'acides gras Download PDF

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Publication number
WO2020126012A1
WO2020126012A1 PCT/EP2018/086378 EP2018086378W WO2020126012A1 WO 2020126012 A1 WO2020126012 A1 WO 2020126012A1 EP 2018086378 W EP2018086378 W EP 2018086378W WO 2020126012 A1 WO2020126012 A1 WO 2020126012A1
Authority
WO
WIPO (PCT)
Prior art keywords
fatty acid
alkali metal
alkaline earth
powder
earth metal
Prior art date
Application number
PCT/EP2018/086378
Other languages
English (en)
Inventor
Karine Cavalier
Jean-Yves SEGUIN
Jordi LOPEZ LAUNES
Original Assignee
Solvay Sa
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 Sa filed Critical Solvay Sa
Priority to EP18833037.7A priority Critical patent/EP3897966A1/fr
Priority to PCT/EP2018/086378 priority patent/WO2020126012A1/fr
Publication of WO2020126012A1 publication Critical patent/WO2020126012A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material

Definitions

  • composition based on sodium bicarbonate and on fatty acids
  • the invention relates to a composition based on sodium bicarbonate and on unsaturated fatty acids or on their alkali metal or alkaline earth metal salts.
  • sesquicarbonates are commonly used in the form of powders of solid particles. Such powders are used in particular in the food industry, animal feed and as reactants for the purification of flue gases.
  • the tonnages produced worldwide and used annually (2016) are high: of the order of 4 million tonnes for sodium bicarbonate, 65 million tonnes for sodium carbonate and a few hundred thousand tonnes for potassium carbonate, potassium bicarbonate, sodium sesquicarbonate or trona (natural ore of sodium sesquicarbonate). These tonnages are produced mainly in the form of powders.
  • fatty acids such as stearic acid or its salts (sodium, magnesium or calcium stearate) as anticaking agent for alkali metal carbonates, bicarbonates or sesquicarbonates or as mill antifouling and lubricating agent for such powders, in particular for fine ready-for-use powders.
  • JP5058622 describes the addition of 0.5% to 1% of calcium or magnesium stearate to sodium bicarbonate powders, comprising sodium carbonate at the surface, as anticaking agent for the storage of such powders, in particular in closed bags.
  • W02007/071666 describes the use of 0.2% to 7% of fatty acids or of their salts, such as the stearate, as a cleaning agent of the grinder, wherein fatty acids or their salts are used as a mixture with sodium bicarbonate, during the milling of sodium bicarbonate powders.
  • WO2015/118166 describes the use of fatty acids to limit the ammonia release during storage of ammoniated compositions, used with in a content of 0.01% to 5% by weight of fatty acids reported to weight of alkali ammoniated solids.
  • Fatty acids are chosen from: lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, behenic acid or their salts.
  • the ammonia- comprising compositions comprises from 60% to 98% of sodium bicarbonate,
  • W02016/102603 describes the use of C 6 -Cis fatty acids at a content of 0.1 to 20% as a mixture in a fluid bed or in comilling with sodium bicarbonate, in order to reduce the rates of dissolution of the powders thus obtained, and uses as baking powders for cake making.
  • the preferred fatty acids are palmitic acid or stearic acid.
  • WO2017/178623 describes the use of fatty acids, as a mixture with sodium bicarbonate powders, at a content of 16.7% to 60% by weight of fatty acid and the remainder as bicarbonate in order to reach 100%, for formulations of extruded sodium bicarbonate aggregates, in particular in application as blowing agents for polymers.
  • fatty acids or of their salts as a mixture with alkali metal bicarbonate, carbonate or sesquicarbonate powders, in particular in the purification of flue gases, presents a problem due to the amounts of fatty acids added to the powders, which reduce their purities, and during the recycling for the recovery in value of the waste salts from the purification of the flue gases during the use of such powders.
  • Such fatty acid salts are insoluble in brines and have to be separated on activated carbon or phase separators, during the reprocessing of these salts in order to regenerate alkali metal bicarbonate or carbonate.
  • - saturated fatty acids having a short chain in particular from 6 to at most 12 carbon atoms, such as caproic acid or lauric acid, or their salts,
  • the present invention relates to the use of unsaturated C 6 -C 22 carbon fatty acid, or of saturated branched C 6 -C 22 carbon fatty acid, or of a saturated C 6 -C 12 carbon fatty acid, or of their alkali metal or alkaline earth metal salt, for improving the fluidity of alkali metal bicarbonate, alkali metal carbonate or alkali metal sesquicarbonate powders.
  • the present invention also relates to a powder comprising at least 93% of sodium bicarbonate and from 0.01% to 7% of an unsaturated C 6 -C 22 carbon fatty acid, or of a saturated C 6 -C 16 carbon fatty acid, or of their alkali metal or alkaline earth metal salt.
  • the present invention also relates to a method for the preparation of a powder with improved fluidity properties, comprising a step of mixing an unsaturated C 6 -C 22 carbon fatty acid, or a branched saturated C 6 -C 22 carbon fatty acid, or their alkali metal or alkaline earth metal salt, with a sodium bicarbonate powder having a reduced content of ammonia compounds or having a reduced content of sodium carbonate.
  • a first advantage of the present invention is the possibility of improving the fluidity of alkali metal bicarbonate, carbonate or sesquicarbonate powders with respect to the uses already known and in comparison with equivalent powders non-additivated with fatty acids or their salts, or in comparison with commonly used fatty acids
  • a second advantage of the present invention is the possibility of reducing the amounts of fatty acids added to alkali metal bicarbonate, carbonate or sesquicarbonate powders and thus, during their use in the purification of flue gases, of reducing the steps and costs associated with the removal of the organics from the waste salts during the recovery in value and the recycling of the waste salts, for the renewed manufacture of alkali metal bicarbonate, carbonate or sesquicarbonate.
  • a third advantage of the present invention is the improvement in the behaviour of the powders to compaction, making possible a reduced compaction of the latter with such fatty acids, making them easier to store and transport in bulk.
  • a fourth advantage of the present invention is the improvement in the behaviour of the powders to bulk storage in a silo, making it possible to reduce the diameter of the channels (often called‘ratholes’) which are created during the emptying of the said silos and making it possible to limit the number of beaters or arch breakers in storage hoppers for such powders.
  • a fifth advantage of the present invention is the improvement in the behaviour of the powders to transportation by road tankers, tank wagons, bulk ore carriers or container ships, making possible an improved fluidization in pneumatic transportation for the emptying of the said tanks or containers.
  • a sixth advantage is the improvement in the angles of repose of the powders poured as powder, making possible storage in a silo having a less pointed conical bottom.
  • a seventh advantage is the improvement in the Carr index of the powders thus obtained, making possible a reduced compaction during the transportation and easier emptying of the powders transported in road tankers, in particular over lengthy stretches of road or over roads in a poor condition, causing vibrations and compaction of the said powders and difficult emptying.
  • An eighth advantage of the present invention is the improvement in the behaviour towards handling of the said powders after transportation by sea, in particular through humid and/or hot regions of tropical or equatorial regions (Azores, Suez Canal, Panama Canal, Pacific Ocean, and the like).
  • Powder is understood to mean an assembly of solid particles.
  • the said solid particles have small dimensions, generally of less than a millimetre or of less than a tenth of a millimetre (100 pm).
  • Angle of repose of a powder is understood to mean the measurement the angle of the angle of repose, in particular according to the method described in the present descriptive specification.
  • SWF Specific weight by flow
  • SWT Specific weight by tapping
  • Carr index is understood to mean the measurement of the compressibility of a bed of particles, defined by the relationship:
  • ⁇ SWF (Specific Weight by Flow) is the poured bulk density, expressed in kg/m 3
  • SWT (Specific Weight by Tapping) is the tapped bulk density
  • Table 1 Determination of the flow of a powder as a function of its Carr index.
  • C x -C y carbon fatty acid denotes fatty acids, the molecules of which have a minimum of x carbons and a maximum of y carbons.
  • saturated fatty acid denotes a fatty acid, the molecule of which does not have available a carbon-carbon double or triple bond.
  • the expression "branched fatty acid” denotes a fatty acid molecule, wherein the carbon atoms are connected to other carbon atoms forming a chain of carbon atoms and wherein at least one carbon of the chain is directly connected to more than 2 carbon atoms (ie 3 or to 4 carbon atoms). Therefore said carbon atom chain is not linear, and comprises at least one branch.
  • fatty acid salt corresponds to the alkali metal salts of fatty acids, or alkaline earth metal salts of the corresponding fatty acid.
  • a range of values for a variable defined by a bottom limit, or a top limit, or by a bottom limit and a top limit, also comprises the embodiments where the variable is chosen, respectively, within the range of values: excluding the bottom limit, or excluding the top limit, or excluding the bottom limit and the top limit.
  • the invention relates to the use of an unsaturated or of a branched saturated C6-C22 carbon fatty acid, or of a saturated C6-C10 carbon fatty acid, or of their alkali metal or alkaline earth metal salt, for improving the fluidity of alkali metal bicarbonate, alkali metal carbonate or alkali metal sesquicarbonate powders.
  • the present invention also relates to a powder comprising at least 93% of sodium bicarbonate and from 0.01% to 7% of an unsaturated C6-C22 carbon fatty acid or of a branched saturated C6-C22 carbon fatty acid, or of a saturated C6-C12 carbon fatty acid, or of their alkali metal or alkaline earth metal salt.
  • the present invention also relates to a method for the preparation of a powder according to the invention, comprising a step of mixing the unsaturated C6-C22 carbon fatty acid, or the saturated C6-C12 carbon fatty acid, or their alkali metal or alkaline earth metal salt, with a sodium bicarbonate powder having a reduced content of ammonia compounds or having a reduced content of sodium carbonate.
  • the invention relates to different preferred embodiments ('Item') described below.
  • Item 1 Powder comprising at least 93% of sodium bicarbonate and from 0.01% to 7% of an unsaturated C6-C22 carbon fatty acid, or of a branched saturated C6-C22 carbon fatty acid, or of a saturated C6-C12 carbon fatty acid, or of their alkali metal or alkaline earth metal salt.
  • the unsaturated fatty acid of which, or its alkali metal or alkaline earth metal salt, comprises at least 8, or at least 10 carbons.
  • Powder according to item 2 the unsaturated fatty acid of which, or its alkali metal or alkaline earth metal salt, comprises at least 12, or at least 14 carbons.
  • the unsaturated fatty acid of which, or its alkali metal or alkaline earth metal salt comprises at most 20 carbons, or at most 18 carbons.
  • Powder according to item 1 the saturated fatty acid of which, or its alkali metal or alkaline earth metal salt, comprises at least 8 carbons.
  • Powder according to item 1 the saturated fatty acid of which, or its alkali metal or alkaline earth metal salt, comprises at least 10 carbons.
  • Powder according to item 1 or 7 the saturated fatty acid of which, or its alkali metal or alkaline earth metal salt, comprises at most 10 carbons.
  • Powder according to item 1 the saturated fatty acid of which, or its alkali metal or alkaline earth metal salt, comprises at least 8 or at least 10 carbons.
  • Powder according to item 11 the branched saturated fatty acid of which, or its alkali metal or alkaline earth metal salt, comprises at least 14 carbons.
  • Item 13 Powder according to any one of items 1, 10, 11, or 12, wherein the fatty acid is a branched saturated fatty acid, or its alkali metal or alkaline earth metal salt, and comprises at most 20 carbons, or at most 18 carbons.
  • Item 15 Powder comprising at least 93% of bicarbonate and from 0.01% to 7% of fatty acid selected among: caproic acid, linoleic acid, lauric acid, oleic acid or isostearic acid, or their alkali metal or alkaline earth metal salts, and having less than 0.02% of ammonia equivalent or having less than 1% of sodium carbonate.
  • fatty acid selected among: caproic acid, linoleic acid, lauric acid, oleic acid or isostearic acid, or their alkali metal or alkaline earth metal salts, and having less than 0.02% of ammonia equivalent or having less than 1% of sodium carbonate.
  • Item 16 Powder according to any one of the preceding items, wherein the fatty acid is selected among unsaturated C6-C22 carbon fatty acids different from oleic acid and linoleic acid, and their alkali metal or alkaline earth metal salt.
  • Item 17 Powder according to any one of the preceding items, wherein the fatty acid is selected among branched saturated C6-C22 carbon fatty acids different from isostearic acid and its alkali metal or alkaline earth metal salt.
  • Item 18 Powder according to any one of the preceding items, comprising at least 0.05%, preferably at least 0.20% of fatty acid, or or of their alkali metal or alkaline earth metal salt.
  • Item 19 Powder according to any one of the preceding items, comprising at least 0.30% of unsaturated fatty acid, or of saturated fatty acid, or of their alkali metal or alkaline earth metal salt.
  • Item 20 Powder according to any one of the preceding items, comprising at most 4% of fatty acid, or of their alkali metal or alkaline earth metal salt.
  • Item 21 Powder according to any one of the preceding items, comprising at most 2% of fatty acid, or of their alkali metal or alkaline earth metal salt.
  • Item 22 Powder according to any one of the preceding items, comprising at most 1.5% of fatty acid, or of their alkali metal or alkaline earth metal salt.
  • Item 23 Powder according to any one of the preceding items, the fatty acid of which is in the form of fatty acid salt chosen from sodium, potassium, magnesium or calcium salts.
  • Item 24 Powder according to any one of the preceding items, in the form of solid particles with a mean diameter of at most 500 pm or of at most 200 pm.
  • Item 25 Powder according to the preceding item, in the form of solid particles with a mean diameter of at most 100 pm or of at most 50 pm.
  • Item 26 Powder according to the preceding item, in the form of solid particles with a mean diameter of at most 30 pm.
  • Item 27 Method for the preparation of a powder according to any one of the preceding items, comprising a step of mixing the fatty acid, or their alkali metal or alkaline earth metal salt, with a sodium bicarbonate powder.
  • Item 28 Method according to the preceding item, the mixing step of which is carried out by a mixing device chosen from: a blade mixer equipped with lifter blades, a ploughshare mixer, a screw mixer, a mill, a fluid bed or any
  • Item 29 Method according to item 27 or 28, wherein the step of mixing the fatty acid and the powder is carried out with the fatty acid in molten state or its salt in the molten state.
  • Item 30 Use of unsaturated C6-C22 carbon fatty acid, or of a branched saturated C6-C22 carbon fatty acid, or of a saturated C6-C12 carbon fatty acid, or of their alkali metal or alkaline earth metal salt of fatty acid, for improving the fluidity of alkali metal bicarbonate, alkali metal carbonate or alkali metal sesquicarbonate powders.
  • Item 31 Use of unsaturated C6-C22 carbon fatty acid, or of a branched saturated C6-C22 carbon fatty acid, or of a saturated C6-C12 carbon fatty acid, or of their alkali metal or alkaline earth metal salt of fatty acid, for improving the fluidity of alkali metal bicarbonate, alkali metal carbonate or alkali metal sesquicarbonate powders.
  • fatty acid or of its salt which consists in adding from 0.01% to 7% of unsaturated and/or saturated fatty acids, or their alkali metal or alkaline earth metal fatty acid salts, to the alkali metal bicarbonate, the alkali metal carbonate or the alkali metal sesquicarbonate powder, in order to improve the fluidity of the said powder, such as the angle of repose, or the Carr index, or the rathole diameter.
  • Item 32 Use of fatty acid or of its salt according to item 30 or 31 , for producing a powder according to any one of item 1 to 26.
  • Item 33 Use of fatty acid or of its salt according to any item 30 to 32, which consists in adding at least 0.05% or preferably at least 0.10% of fatty acid or of its alkali metal or alkaline earth metal salt.
  • Item 34 Use of fatty acid or of its salt according to the preceding item, which consists in adding at least 0.20% or 0.30% of fatty acid or of its alkali metal or alkaline earth metal salt.
  • Item 35 Use of fatty acid or of its salt according to any one of the preceding items, which consists in adding at most 4% or at most 2% of fatty acid or of its alkali metal or alkaline earth metal salt.
  • Item 36 Use of unsaturated C6-C22 carbon fatty acid, or of a branched saturated C6-C22 carbon fatty acid, or of a saturated C6-C12 carbon fatty acid, or of their alkali metal or alkaline earth metal salt of fatty acid, according to the preceding item, for improving the fluidity of alkali metal bicarbonate, alkali metal carbonate or alkali metal sesquicarbonate powders with a fine particle size and intended to be injected in a dry condition in purification of flue gases.
  • saturated fatty acids having a branched carbon chain in comparison with the saturated fatty acid having a linear carbon chain with the same carbon number (or respectively of their salts), makes possible a substantial improvement in the quality of flow of the said powders.
  • saturated fatty acids having a shorter carbon chain also improve the quality of flow of the said powders, in comparison with the use of fatty acids having a longer carbon chain. This makes it possible to use less fatty acid, in comparison with the known fatty acids of the prior art.
  • the adjustment in the amount of fatty acid or of its salt may be adapted according to:
  • an excessively large amount of fatty acid exhibits the disadvantage of producing a tacky powder, generally when used above 7% in weight reported to the total weight of the powder.
  • a simple test of the type of the measurement of the angle of repose of the powder with a reduced number of different contents of additive, between 0.01% and 7%, makes it possible to adapt the amount of fatty acid to be added to the powder, in order to find an optimum with the least cost/amount of additive.
  • amounts of additive of the order of at least 0.01%, or at least 0.05%, up to 0.10%, indeed even up to 0.30%, by weight, are generally highly suitable.
  • Angle of repose of a powder is understood to mean the measurement the angle of the angle of repose, in particular according to the ISO 4324:1977 method (equivalent to standard AFNOR T73.008).
  • SWF Specific weight by flow
  • SWT Specific weight by tapping
  • ammonia compounds are understood to mean, in the present specification, compounds of the ammonium bicarbonate or of ammonium carbonate or of carbamate type which give off ammonia (NFfi) when they are heated at temperatures above ambient temperature.
  • NFfi off ammonia
  • the acids are added in the solid form or in the liquid form (molten fatty acids) sprayed by a nozzle giving a circular jet, the flow rate of which is 1 g/min.
  • a pre-spreading jet of the fatty acid makes possible a better distribution of the fatty acid over the solid particles and makes it possible to slightly reduce the amounts of fatty acid used per given angle of repose targeted.
  • Linoleic acid polyunsaturated, linear chain
  • Olive oil consisting of fatty acid triglycerides
  • Linseed oil (consisting of fatty acid triglycerides)
  • the powder rheometer is an instrument which measures the stress necessary for the flow of a powder, under different compressive stresses between 0 and 11 kPa, in order to establish the flow function (or ff coefficient) of the said powder, by plotting the unconfined yield stress fc of the powder as a function of the major consolidation stress s ⁇ :
  • the PFT measures enables also to calculate the rathole diameter for a given powder function of an equivalent height of the powder, usually between 0.8 to 8.0 m.
  • the values of arch diameter or channel diameter in storage in a silo which may be deduced from the combined flow function and wall friction characteristics with a powder rheometer were significantly lower when the polyunsaturated acid, such as linoleic acid, was present at lower concentrations than 7%, preferably lower than 4%, or lower than 2%, and preferably for amounts of between 0.80% and 0.50%.
  • the calculated diameters show a favourable behaviour of the powder in a confined medium (silo).
  • the acids are added in the solid form or in the liquid form (molten fatty acids) sprayed by a nozzle giving a circular jet, the flow rate of which is 1 g/min.
  • a pre-spreading jet of the fatty acid makes possible a better distribution of the fatty acid over the solid particles and makes it possible to slightly reduce the amounts of fatty acid used per given angle of repose targeted.
  • Linoleic acid polyunsaturated C18:2(9,12), linear chain
  • Table 4 Comparative characteristics of the powders obtained without additive and with various content of additive relating to SWF, SWT, Carr index and Angle of repose.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention concerne une composition à base de bicarbonate de sodium et d'une poudre d'acides gras comprenant au moins 93 % de bicarbonate de sodium et de 0,01 % à 7 % d'un acide gras de carbone C6-C22 insaturé, ou d'un acide gras de carbone C6-C2 saturé ramifié, ou d'un acide gras C6-C12 linéaire saturé, ou de leur sel de métal alcalin ou de leur sel de métal alcalino-terreux, et ayant moins de 1 % de carbonate de sodium ou moins de 0,02 % d'équivalent d'ammoniac. L'utilisation d'un acide gras de carbone C6-C2 insaturé, ou d'un acide gras de carbone C6-C2 saturé ramifié, ou de leur sel de métal alcalin ou de métal alcalino-terreux, pour améliorer la fluidité de poudres de bicarbonate de métal alcalin, de carbonate de métal alcalin ou de sesquicarbonate de métal alcalin.
PCT/EP2018/086378 2018-12-20 2018-12-20 Composition à base de bicarbonate de sodium et d'acides gras WO2020126012A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18833037.7A EP3897966A1 (fr) 2018-12-20 2018-12-20 Composition à base de bicarbonate de sodium et d'acides gras
PCT/EP2018/086378 WO2020126012A1 (fr) 2018-12-20 2018-12-20 Composition à base de bicarbonate de sodium et d'acides gras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2018/086378 WO2020126012A1 (fr) 2018-12-20 2018-12-20 Composition à base de bicarbonate de sodium et d'acides gras

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WO2020126012A1 true WO2020126012A1 (fr) 2020-06-25

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007071666A1 (fr) 2005-12-23 2007-06-28 Solvay (Société Anonyme) Procede de broyage
JP5058622B2 (ja) 2007-02-13 2012-10-24 キヤノン株式会社 画像処理装置、画像処理装置の制御方法及びプログラム
WO2015118166A1 (fr) 2014-02-10 2015-08-13 Solvay Sa Composition réactive à base de bicarbonate de sodium et son procédé de production
WO2016102603A1 (fr) 2014-12-22 2016-06-30 Solvay Sa Particules de bicarbonate de métal alcalin présentant un temps de dissolution accru
WO2017178623A1 (fr) 2016-04-13 2017-10-19 Solvay Sa Procédé d'extrusion en fusion pour la préparation de formulations de carbonates, bicarbonates et sesquicarbonates de métal alcalin en utilisant un agent de fonctionnalisation fondu
WO2018015506A1 (fr) * 2016-07-20 2018-01-25 Solvay Sa Bicarbonate particulaire fonctionnalisé en tant qu'agent gonflant, composition polymère pouvant être moussée le contenant et son utilisation dans la préparation d'un polymère thermoplastique moussé

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007071666A1 (fr) 2005-12-23 2007-06-28 Solvay (Société Anonyme) Procede de broyage
US20110135553A1 (en) * 2005-12-23 2011-06-09 Solvay (Societe Anonyme) Milling process
JP5058622B2 (ja) 2007-02-13 2012-10-24 キヤノン株式会社 画像処理装置、画像処理装置の制御方法及びプログラム
WO2015118166A1 (fr) 2014-02-10 2015-08-13 Solvay Sa Composition réactive à base de bicarbonate de sodium et son procédé de production
WO2016102603A1 (fr) 2014-12-22 2016-06-30 Solvay Sa Particules de bicarbonate de métal alcalin présentant un temps de dissolution accru
WO2017178623A1 (fr) 2016-04-13 2017-10-19 Solvay Sa Procédé d'extrusion en fusion pour la préparation de formulations de carbonates, bicarbonates et sesquicarbonates de métal alcalin en utilisant un agent de fonctionnalisation fondu
WO2018015506A1 (fr) * 2016-07-20 2018-01-25 Solvay Sa Bicarbonate particulaire fonctionnalisé en tant qu'agent gonflant, composition polymère pouvant être moussée le contenant et son utilisation dans la préparation d'un polymère thermoplastique moussé

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