FR2618350A1 - PROCESS FOR CAUSING THE BREAKAGE OF EMULSION USING A BREAKING AGENT - Google Patents
PROCESS FOR CAUSING THE BREAKAGE OF EMULSION USING A BREAKING AGENT Download PDFInfo
- Publication number
- FR2618350A1 FR2618350A1 FR8710592A FR8710592A FR2618350A1 FR 2618350 A1 FR2618350 A1 FR 2618350A1 FR 8710592 A FR8710592 A FR 8710592A FR 8710592 A FR8710592 A FR 8710592A FR 2618350 A1 FR2618350 A1 FR 2618350A1
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- Prior art keywords
- emulsion
- agent
- microcapsules
- breaking
- road
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- 239000000839 emulsion Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 239000003094 microcapsule Substances 0.000 claims abstract description 19
- 239000011230 binding agent Substances 0.000 claims abstract description 10
- 125000002091 cationic group Chemical group 0.000 claims abstract description 6
- 230000002378 acidificating effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 5
- 238000003892 spreading Methods 0.000 claims description 5
- 239000003929 acidic solution Substances 0.000 claims description 2
- 239000008346 aqueous phase Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229910002055 micronized silica Inorganic materials 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000010426 asphalt Substances 0.000 description 5
- 239000003599 detergent Substances 0.000 description 3
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 239000004141 Sodium laurylsulphate Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 235000010410 calcium alginate Nutrition 0.000 description 1
- 239000000648 calcium alginate Substances 0.000 description 1
- 229960002681 calcium alginate Drugs 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000007970 homogeneous dispersion Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical class OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
- C08L95/005—Aqueous compositions, e.g. emulsions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/047—Breaking emulsions with separation aids
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
- E01C19/1063—Controlling the operations
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
Landscapes
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Road Paving Structures (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Sealing Material Composition (AREA)
Abstract
On provoque la rupture d'une émulsion cationique acide au moyen d'un agent de rupture basique mis en oeuvre sous forme de microcapsules dont l'enveloppe est en un matériau qui est attaqué chimiquement et/ou physiquement par l'émulsion pour libérer l'agent de rupture après une durée prédéterminée de contact avec l'émulsion, les microcapsules étant introduites et dispersées dans l'émulsion à un moment qui précède de ladite durée celui auquel la rupture est souhaitée. Application aux émulsions bitumineuses pour liants routiers.An acidic cationic emulsion is broken down by means of a basic breaking agent used in the form of microcapsules the envelope of which is made of a material which is chemically and / or physically attacked by the emulsion to release the. breaking agent after a predetermined duration of contact with the emulsion, the microcapsules being introduced and dispersed in the emulsion at a time which precedes said duration that at which the breaking is desired. Application to bituminous emulsions for road binders.
Description
Procédé pour provoquer la rupture d'une émulsion au moyenMethod for causing the breaking of an emulsion by means of
d'un agent de rupture.a breaking agent.
L'invention concerne la rupture des émulsions cationiques, The invention relates to the breaking of cationic emulsions,
et plus particulièrement des émulsions bitumineuses utili- and more particularly bituminous emulsions used
sées dans le domaine des revêtements routiers. in the field of road surfacing.
Il est courant de préparer des liants pour revêtements routiers sous la forme d'émulsions bitumineuses cationiques comprenant une phase dispersante aqueuse, cette émulsion devant être rompue pour que le revêtement routier acquière It is common to prepare binders for road coatings in the form of cationic bituminous emulsions comprising an aqueous dispersing phase, this emulsion having to be broken so that the road surface acquires
les propriétés physiques et mécaniques voulues. the desired physical and mechanical properties.
Pour rompre une émulsion, il est connu d'y ajouter un agent To break an emulsion, it is known to add an agent
de rupture, c'est-à-dire une substance dont l'action physi- rupture, that is to say a substance whose physical action
que et/ou chimique rend l'émulsion instable et provoque sa rupture. Les émulsions cationiques ayant en principe un caractère acide et n'étant stables qu'à un pH bas, on utilise couramment un agent de rupture basique qui élève that and / or chemical makes the emulsion unstable and causes it to break. Cationic emulsions having in principle an acidic character and being stable only at a low pH, it is common to use a basic breaking agent which raises
le pH du milieu.the pH of the medium.
La mise en contact de l'agent de rupture avec l'émulsion provoque la rupture immédiate de celle-ci. Or, dans le cas des revêtements routiers, le liant bitumineux doit rester à l'état d'émulsion pour permettre sa manipulation jusqu'à son étalement sur la route, et il est alors très Contacting the breaking agent with the emulsion causes the immediate rupture thereof. However, in the case of road surfaces, the bituminous binder must remain in the emulsion state to allow its handling until spreading on the road, and it is then very
difficile d'y disperser l'agent de rupture de façon homo- difficult to disperse the breaking agent there homogeneously
gène pour obtenir une rupture uniforme. Pour cette raison, gene to get a uniform break. For this reason,
on utilise généralement des émulsions d'une stabilité limi- Emulsions of limited stability are generally used.
tée, qui se rompent spontanément après un certain temps. which break spontaneously after a certain time.
Mais la vitesse de rupture des émulsions dépend de nombreux facteurs, tels que température ambiante, température du sol, des agrégats et de l'émulsion, teneur en humidité de l'atmosphère et des agrégats, de sorte que la rupture But the rate of breakage of emulsions depends on many factors, such as ambient temperature, soil temperature, aggregates and emulsion, moisture content of the atmosphere and aggregates, so the break
risque d'intervenir plus tôt ou plus tard que souhaité. may intervene sooner or later than desired.
Le but de l'invention est de permettre la rupture d'une The object of the invention is to allow the breaking of a
émulsion cationique à un moment précis souhaité, et notam- cationic emulsion at a desired precise moment, and in particular
ment la rupture d'une émulsion bitumineuse peu de temps the breakage of a bituminous emulsion shortly
après son étalement sur une route. after spreading on a road.
Ce but est atteint selon l'invention grâce à un procédé This object is achieved according to the invention by means of a method
dans lequel on introduit dans l'émulsion un agent de rup- wherein an emulsion is introduced into the emulsion
ture sous forme de microcapsules ou microsphères dont l'en- in the form of microcapsules or microspheres whose
veloppe est en un matériau qui est attaqué chimiquement et/ou physiquement par l'émulsion pour libérer l'agent de rupture après une durée prédéterminée de contact avec Veloppe is made of a material that is chemically and / or physically etched by the emulsion to release the breaking agent after a predetermined period of contact with
l'émulsion, les microcapsules étant introduites et disper- the emulsion, the microcapsules being introduced and dispersed
sées dans l'émulsion à un moment qui précède de ladite in the emulsion at a time which precedes said
durée celui auquel la rupture est souhaitée. duration the one at which breakage is desired.
Puisque l'émulsion comprend une phase aqueuse, on peut choisir pour l'enveloppe une substance attaquable par l'eau, c'est-à-dire qui se dissout ou se désagrège au contact de l'eau, ou une substance perméable à l'eau. Pour une émulsion à caractère acide, on peut choisir une substance Since the emulsion comprises an aqueous phase, it is possible to select for the shell a substance that can be attacked by water, that is to say that dissolves or disintegrates on contact with water, or a substance permeable to water. 'water. For an acidic emulsion, one can choose a substance
attaquable par les solutions acides. attackable by acidic solutions.
Comme substances sensibles à l'eau et aux acides et utili- As substances sensitive to water and acids and used
sables avec les émulsions aqueuses acides, on peut citer sands with acidic aqueous emulsions, mention may be made of
les sucres (notamment le glucose), les silicates, les poly- sugars (especially glucose), silicates, poly-
mères cellulosiques et divers polymères artificiels tels cellulosic mothers and various artificial polymers such
que le polyisoprène, les polymères acryliques et les copo- polyisoprene, acrylic polymers and co-polymers
lymères éthylène-acétate de vinyle, cette liste n'étant ethylene-vinyl acetate, this list not being
pas limitative.not limiting.
Comme indiqué plus haut, toujours pour une émulsion acide, As indicated above, always for an acid emulsion,
l'agent de rupture est notamment un agent basique. the breaking agent is in particular a basic agent.
Selon une caractéristique avantageuse de l'invention, l'a- According to an advantageous characteristic of the invention, the
gent de rupture comprend un agent à action énergique, notam- ment une base forte telle que l'hydroxyde de sodium, et un agent à action douce, notamment une base moyenne ou faible telle que l'oxyde de calcium, qui sont présents The rupture agent comprises an energetic agent, especially a strong base such as sodium hydroxide, and a mild-acting agent, such as a medium or weak base such as calcium oxide, which are present.
dans des microcapsules distinctes et sont libérés successi- in separate microcapsules and are released successively
vement de façon que la rupture de l'émulsion soit commen- so that the breaking of the emulsion is
cée par l'agent doux et terminée par l'agent énergique. by the sweet agent and terminated by the energetic agent.
On a en effet observé que, lorsque la rupture d'une émul- It has been observed that when the breakup of an emul-
sion bitumineuse est amorcée en présence d'une base forte, il se forme parfois des grumeaux de bitume au lieu d'un film continu, et que, si on utilise une base trop faible, bitumen is initiated in the presence of a strong base, bitumen lumps are sometimes formed instead of a continuous film, and if a base that is too weak is used,
la rupture peut ne pas être complète. Ce problème est réso- the break may not be complete. This problem is solved
lu en libérant successivement une base moyenne ou faible read by successively releasing an average or weak base
et une base forte.and a strong base.
A cet effet, les microcapsules des deux types peuvent être introduites en même temps et libérer les agents de rupture For this purpose, the microcapsules of both types can be introduced at the same time and release the breaking agents
- après des durées différentes, par exemple grâce à des épais- - after different durations, for example thanks to thick
seurs de parois différentes. Les microcapsules peuvent different walls. Microcapsules can
également être introduites successivement. also be introduced successively.
On peut utiliser des agents de rupture à l'état gazeux, par exemple l'ammoniac, des agents de rupture à l'état liquide, par exemple l'hydroxyde de sodium en solution dans l'eau, des agents de rupture à l'état pâteux ou à l'état solide divisé, par exemple des sels à caractère It is possible to use gaseous rupture agents, for example ammonia, liquid-type breaking agents, for example sodium hydroxide in solution in water, disrupting agents, pasty state or in a divided solid state, for example salts with
basique tels que carbonates, chlorates, perchlorates, ni- such as carbonates, chlorates, perchlorates, ni-
trates basiques, phosphates trimétalliques, différents agents pouvant être associés éventuellement sous des états basic tracers, trimetallic phosphates, different agents which can be associated possibly under states
différents.different.
Cependant, la micro-encapsulation des gaz est une techni- However, the microencapsulation of gases is a technical
que encore peu développée, et les enveloppes de microcapsu- still underdeveloped, and microcapsule envelopes
les attaquables par l'eau ne peuvent être utilisées avec des agents de rupture en solution aqueuse. Quant aux sels basiques, ils n'ont pas toujours une action suffisamment énergique. Pour résoudre ces problèmes, l'invention propose d'utiliser dans les microcapsules un agent de rupture sous forme d'un liquide immobilisé dans et/ou à la surface d'un support solide, notamment en poudre, l'ensemble formé par ledit liquide et le support solide ayant le comportement d'un solide. Un tel ensemble, connu sous le nom de "liquide sec", a l'aspect d'un solide homogène et se manipule comme une poudre, et peut être mis en contact avec une substance attaquable par le liquide qui en fait partie sans que cette water attackable can not be used with aqueous solution. As for the basic salts, they do not always have a sufficiently energetic action. To solve these problems, the invention proposes to use in the microcapsules a rupture agent in the form of a liquid immobilized in and / or on the surface of a solid support, in particular powder, the assembly formed by said liquid and the solid support having the behavior of a solid. Such an assembly, known as a "dry liquid", has the appearance of a homogeneous solid and is handled like a powder, and can be put in contact with a substance that can be attacked by the liquid that is part of it, without this
substance soit attaquée de façon sensible. substance is attacked sensitively.
Comme support en poudre on peut utiliser avantageusement une silice précipitée micronisée et poreuse telle que celle As a powder support, a micronized and porous precipitated silica such as
commercialisée par DEGUSSA sous la référence Sipernat 50. marketed by DEGUSSA under the reference Sipernat 50.
Un tel support peut absorber dans ses pores et adsorber à sa surface une lessive de soude additionnée d'un agent mouillant, en une quantité supérieure à son propre poids, Such a support can absorb into its pores and adsorb at its surface a sodium hydroxide solution containing a wetting agent, in a quantity greater than its own weight,
pour fournir un liquide sec.to provide a dry liquid.
Comme il ressort de l'exposé introductif, l'invention est particulièrement utile dans les cas o l'émulsion doit être rompue lorsque sa phase d'utilisation est terminée, ce qui est défavorable à une dispersion homogène de l'agent de rupture. Pour obtenir une rupture uniforme lorsque la phase d'utilisation est terminée, les microcapsules sont As is apparent from the introductory statement, the invention is particularly useful in cases where the emulsion must be broken when its phase of use is completed, which is unfavorable to a homogeneous dispersion of the breaking agent. To achieve a uniform breakage when the use phase is complete, the microcapsules are
préalablement dispersées dans l'émulsion par malaxage. previously dispersed in the emulsion by kneading.
Ce cas est notamment celui des émulsions bitumineuses des- This case is particularly that of the bituminous emulsions of
tinées à l'obtention d'un liant routier, la rupture inter- to obtain a road binder, the break in
venant après épandage du liant sur une route. coming after spreading the binder on a road.
Lorsque le liant est destiné à être associé à des particu- When the binder is intended to be associated with particles
les solides, par exemple des agrégats ou granulats, dans solids, for example aggregates or aggregates, in
un revêtement routier, les microcapsules peuvent être dis- a road surface, the microcapsules can be
persées dans l'émulsion en même temps que ces agrégats. persisted in the emulsion at the same time as these aggregates.
A titre d'exemple, on peut utiliser comme agent de rupture une lessive ayant la composition pondérale suivante: - laurylsulfate de sodium 2 % hydroxyde de sodium en pastille 10 % - base S 200 P commercialisée par Barnier à Valence 2 % - eau 86 % La base S 200 P est une alkylamidoimidazopolyamine qui participe à l'alcalinité de la solution et présente, tout By way of example, it is possible to use as a breaking agent a detergent having the following weight composition: sodium lauryl sulphate 2% sodium hydroxide in pellet 10% S 200 P base marketed by Barnier in Valencia 2% water 86% The base S 200 P is an alkylamidoimidazopolyamine which participates in the alkalinity of the solution and has all
comme le laurylsulfate de sodium, des propriétés tensio- such as sodium lauryl sulphate, surfactant
actives facilitant la dispersion de celle-ci dans l'émul- active ingredients facilitating the dispersion of the latter in the emulsion
sion à rompre, notamment au contact des granulats qui peu- to break, especially in contact with aggregates which may
vent y être mélangés.can be mixed.
D'autres polyamines peuvent être employées en remplacement de la base S 200 P. parties pondérales de la lessive sont associées à 75 parties pondérales de Sipernat 50 pour obtenir un liquide sec qui est ensuite micro-encapsulé sous une enveloppe cellulosique d'épaisseur appropriée comprise, par exemple, Other polyamines can be used in place of the base S 200 P. parts by weight of the detergent are associated with 75 parts by weight of Sipernat 50 to obtain a dry liquid which is then microencapsulated under a cellulosic casing of appropriate thickness included , for example,
entre 150 et 500 micromètres.between 150 and 500 micrometers.
En introduisant sous forme de microcapsules, dans 100 par- By introducing in the form of microcapsules, in 100 parts
ties pondérales d'émulsion, 0,5 à 1,5 partie pondérale weight of emulsion, 0.5 to 1.5 parts by weight
de ce liquide sec, en fonction de la composition de l'émul- of this dry liquid, depending on the composition of the emul-
sion, on obtient la rupture immédiate et franche de celle- sion, we obtain the immediate and frank rupture of that
ci après le délai d'attaque de l'enveloppe. after the attack time of the envelope.
Dans un autre exemple, on utilise un agent de rupture com- In another example, a common disruptive agent is used
prenant un agent à action douce et un agent à action éner- taking a mild-acting agent and an agent with
gique. Les 100 parties pondérales de lessive de l'exemple précédent sont alors remplacées par 60 parties d'alginate de calcium, encapsulées avec un polymère acrylique et 40 cal. The 100 parts by weight of detergent of the preceding example are then replaced by 60 parts of calcium alginate, encapsulated with an acrylic polymer and 40
parties de lessivée de soude, encapsulées avec le même poly- parts of leached soda, encapsulated with the same poly-
mère, et des épaisseurs de capsules de 30% supérieures. mother, and capsule thicknesses of 30% higher.
Les 75 parties de Sipernat 50 demeurent inchangées. The 75 games of Sipernat 50 remain unchanged.
Dans les exemples précédents, la composition d'émulsion bitumineuse utilisable peut être la suivante: bitume 180/220, 600 kg; polyram S de CECCA, 4 kg; HC1, 6 kg; et eau QSP In the preceding examples, the usable bituminous emulsion composition may be the following: bitumen 180/220, 600 kg; CECCA polyram S, 4 kg; HC1, 6 kg; and water QSP
1 tonne.1 ton.
Un exemple d'application de l'invention est la réalisation d'un coulis bitumineux, fabriqué sur chantier à partir d'agrégats et d'une émulsion de bitume qui, pour la mise en oeuvre de l'invention, contient des émulsifiants et éventuellement d'autres additifs lui conférant une grande An example of application of the invention is the production of a bituminous grout, manufactured on site from aggregates and an emulsion of bitumen which, for the implementation of the invention, contains emulsifiers and optionally other additives giving it great
stabilité à un pH compris entre 2 et 5. stability at pH between 2 and 5.
On mélange ces constituants dans un mélangeur continu à deux arbres horizontaux et on fait couler le mélange sur le sol à partir d'un tralneau qui assure sa répartition et son dosage sur la surface à revêtir. Le bitume doit rester à l'état d'émulsion pendant ces opérations, mais la rupture doit être obtenue après 10 à 15 minutes par These components are mixed in a continuous mixer with two horizontal shafts and the mixture is poured on the ground from a tralneau which ensures its distribution and its dosage on the surface to be coated. The bitumen must remain in the emulsion state during these operations, but the break must be obtained after 10 to 15 minutes by
exemple pour rétablir la circulation. example to restore traffic.
A cet effet, on introduit dans l'émulsion, pendant ou immé- For this purpose, it is introduced into the emulsion, during or immediately
diatement avant son passage dans le malaxeur, une quantité appropriée, en fonction des caractéristiques de l'émulsion, des microcapsules décrites ci-dessus, dont l'épaisseur before it passes through the mixer, an appropriate amount, depending on the characteristics of the emulsion, microcapsules described above, whose thickness
d'enveloppe est choisie de façon à libérer l'agent de rup- envelope is chosen to release the rup-
ture dans les 10 à 15 minutes qui suivent l'épandage du within 10 to 15 minutes after application of the
mélange.mixed.
Bien entendu, l'application de l'invention n'est pas limi- Of course, the application of the invention is not limited.
tée à l'exemple qui vient d'être décrit. Elle s'étend à tous les cas d'enrobage de matériaux (enrobés ouverts à froid, grave émulsion, enrobés coulés à froid), ainsi qu'aux to the example just described. It extends to all cases of coating materials (cold-open mixes, severe emulsions, cold-cast asphalts), as well as
cas de répandage, notamment lorsqu'une émulsion de répan- spreading, especially when an emulsion of
dage est mise en oeuvre par temps douteux. L'invention age is implemented in dubious times. The invention
peut également trouver application dans des domaines tech- may also find application in technical fields
niques différents o peuvent se poser des problèmes analo- different situations where similar problems may arise
gues à ceux rencontrés avec les liants routiers bitumineux. to those encountered with bituminous road binders.
Claims (12)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8710592A FR2618350B1 (en) | 1987-07-24 | 1987-07-24 | METHOD FOR CAUSING THE BREAKAGE OF AN EMULSION USING A BREAKING AGENT |
| ES8802188A ES2007260A6 (en) | 1987-07-24 | 1988-07-12 | Process for breaking an emulsion |
| CH2770/88A CH677451A5 (en) | 1987-07-24 | 1988-07-20 | |
| GB8817512A GB2208270B (en) | 1987-07-24 | 1988-07-22 | Process for breaking an emulsion |
| IT67697/88A IT1223716B (en) | 1987-07-24 | 1988-07-22 | PROCEDURE TO CAUSE AN EMULSION TO BREAK |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8710592A FR2618350B1 (en) | 1987-07-24 | 1987-07-24 | METHOD FOR CAUSING THE BREAKAGE OF AN EMULSION USING A BREAKING AGENT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2618350A1 true FR2618350A1 (en) | 1989-01-27 |
| FR2618350B1 FR2618350B1 (en) | 1991-07-12 |
Family
ID=9353579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8710592A Expired - Fee Related FR2618350B1 (en) | 1987-07-24 | 1987-07-24 | METHOD FOR CAUSING THE BREAKAGE OF AN EMULSION USING A BREAKING AGENT |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH677451A5 (en) |
| ES (1) | ES2007260A6 (en) |
| FR (1) | FR2618350B1 (en) |
| GB (1) | GB2208270B (en) |
| IT (1) | IT1223716B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2760461A1 (en) * | 1997-03-10 | 1998-09-11 | Colas Sa | BITUMEN EMULSION, PROCESS FOR OBTAINING BITUMEN EMULSION, AND METHOD FOR OBTAINING BITUMINOUS MATERIAL FOR BUILDING OR SERVICING PAVEMENTS |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0527865A4 (en) * | 1990-05-07 | 1993-11-18 | Emoleum (Australia) Limited | Improved bitumen emulsions |
| ES2050601B1 (en) * | 1992-06-10 | 1994-12-16 | Espanola Explosivos | PROCEDURE FOR THE RUPTURE OF EXPLOSIVE EMULSIONS. |
| SE502009C2 (en) * | 1992-11-02 | 1995-07-10 | Nynaes Petroleum Ab | Bitumen emulsion, its preparation and use, and refractive additives for use therein |
| FI20000251L (en) * | 2000-02-07 | 2001-08-08 | Tielaitos | Emulsion coating mass intended for road surfacing and road surfacing made therefrom |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1594762A1 (en) * | 1965-03-03 | 1970-05-21 | Wm Hilgers Chem Fabrik | Process for the production of bituminous coatings on road surfaces using a hose |
| US4194023A (en) * | 1978-09-22 | 1980-03-18 | Mobil Oil Corporation | Controlled deposition of asphalt emulsions |
| US4202795A (en) * | 1978-09-28 | 1980-05-13 | Halliburton Company | Methods and additives for delaying the release of chemicals in aqueous fluids |
| GB2167975A (en) * | 1984-11-21 | 1986-06-11 | Colas Sa | Process for obtaining surface coatings of bitumen |
-
1987
- 1987-07-24 FR FR8710592A patent/FR2618350B1/en not_active Expired - Fee Related
-
1988
- 1988-07-12 ES ES8802188A patent/ES2007260A6/en not_active Expired
- 1988-07-20 CH CH2770/88A patent/CH677451A5/fr not_active IP Right Cessation
- 1988-07-22 GB GB8817512A patent/GB2208270B/en not_active Expired - Fee Related
- 1988-07-22 IT IT67697/88A patent/IT1223716B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1594762A1 (en) * | 1965-03-03 | 1970-05-21 | Wm Hilgers Chem Fabrik | Process for the production of bituminous coatings on road surfaces using a hose |
| US4194023A (en) * | 1978-09-22 | 1980-03-18 | Mobil Oil Corporation | Controlled deposition of asphalt emulsions |
| US4202795A (en) * | 1978-09-28 | 1980-05-13 | Halliburton Company | Methods and additives for delaying the release of chemicals in aqueous fluids |
| GB2167975A (en) * | 1984-11-21 | 1986-06-11 | Colas Sa | Process for obtaining surface coatings of bitumen |
Non-Patent Citations (1)
| Title |
|---|
| BITUMEN, vol. 47, no. 2, pages 55-62, Hamburg, DE; A. HOLL et al.: "Bitumenemulsionen f}r den Strassenbau" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2760461A1 (en) * | 1997-03-10 | 1998-09-11 | Colas Sa | BITUMEN EMULSION, PROCESS FOR OBTAINING BITUMEN EMULSION, AND METHOD FOR OBTAINING BITUMINOUS MATERIAL FOR BUILDING OR SERVICING PAVEMENTS |
| EP0864611A1 (en) * | 1997-03-10 | 1998-09-16 | Colas | Bitumen emulsions, method for their preparation and their use for the maintenance or the making of road surfaces |
| US6106604A (en) * | 1997-03-10 | 2000-08-22 | Colas | Bitumen emulsion, process of producing a bitumen emulsion and process of producing a bituminous material for the construction or maintenance of pavements |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8817512D0 (en) | 1988-08-24 |
| IT8867697A0 (en) | 1988-07-22 |
| GB2208270B (en) | 1991-03-06 |
| FR2618350B1 (en) | 1991-07-12 |
| CH677451A5 (en) | 1991-05-31 |
| ES2007260A6 (en) | 1989-06-01 |
| GB2208270A (en) | 1989-03-22 |
| IT1223716B (en) | 1990-09-29 |
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| CL | Concession to grant licences | ||
| ST | Notification of lapse |
Effective date: 20060331 |