EP1451253A1 - Procede de production d'une emulsion aqueuse d'un liant bitumineux sans ajout d'agent emulsifiant - Google Patents
Procede de production d'une emulsion aqueuse d'un liant bitumineux sans ajout d'agent emulsifiantInfo
- Publication number
- EP1451253A1 EP1451253A1 EP02791905A EP02791905A EP1451253A1 EP 1451253 A1 EP1451253 A1 EP 1451253A1 EP 02791905 A EP02791905 A EP 02791905A EP 02791905 A EP02791905 A EP 02791905A EP 1451253 A1 EP1451253 A1 EP 1451253A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- emulsion
- bituminous binder
- bitumen
- aqueous phase
- bituminous
- 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- Withdrawn
Links
- 239000000839 emulsion Substances 0.000 title claims abstract description 81
- 239000011230 binding agent Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000003995 emulsifying agent Substances 0.000 title claims description 22
- 239000008346 aqueous phase Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 239000010426 asphalt Substances 0.000 claims description 41
- 229920000642 polymer Polymers 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 15
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000007822 coupling agent Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000000806 elastomer Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 238000004078 waterproofing Methods 0.000 claims description 3
- HNNQYHFROJDYHQ-UHFFFAOYSA-N 3-(4-ethylcyclohexyl)propanoic acid 3-(3-ethylcyclopentyl)propanoic acid Chemical compound CCC1CCC(CCC(O)=O)C1.CCC1CCC(CCC(O)=O)CC1 HNNQYHFROJDYHQ-UHFFFAOYSA-N 0.000 claims description 2
- BTXXTMOWISPQSJ-UHFFFAOYSA-N 4,4,4-trifluorobutan-2-one Chemical compound CC(=O)CC(F)(F)F BTXXTMOWISPQSJ-UHFFFAOYSA-N 0.000 claims description 2
- BQACOLQNOUYJCE-FYZZASKESA-N Abietic acid Natural products CC(C)C1=CC2=CC[C@]3(C)[C@](C)(CCC[C@@]3(C)C(=O)O)[C@H]2CC1 BQACOLQNOUYJCE-FYZZASKESA-N 0.000 claims description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 2
- 229920000034 Plastomer Polymers 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 16
- 239000000084 colloidal system Substances 0.000 description 10
- 229920001577 copolymer Polymers 0.000 description 10
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 8
- 239000005977 Ethylene Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 6
- -1 polynorbomene Polymers 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000000265 homogenisation Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 229920001897 terpolymer Polymers 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 150000007514 bases Chemical class 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
Definitions
- the invention relates to a process for producing an aqueous emulsion of a bituminous binder without adding an emulsifying agent to the aqueous phase of the emulsion.
- aqueous emulsions of bituminous binders in the construction and repair of roads, for paving roads, stabilizing the ground, making waterproofing in civil engineering or in buildings or for similar applications is well known.
- the aqueous emulsions suitable for these applications are emulsions of the "oil in water” type, which consist of a dispersion of an organic phase formed from fine globules of the bituminous binder in a continuous aqueous phase, said aqueous phase being added with an emulsifying agent and, if necessary, a pH regulating agent, which may be, as the case may be, an acidic compound or a basic compound.
- the emulsifying agent by its character both hydrophilic and lipophilic, is placed at the interface between the globules of bituminous binder and the aqueous phase and promotes the dispersion of said globules of bituminous binder in the aqueous phase.
- the aqueous emulsion of the bituminous binder is considered to be a convenient means making it possible to reduce the apparent viscosity of said bituminous binder, during the operations for using this binder. After rupture, the emulsion restores the bituminous binder added with part of the emulsifying agent and the other additives present in the aqueous phase.
- the emulsification of a bituminous binder is generally carried out by bringing into contact, in an emulsion-forming zone, a hydrocarbon phase, consisting of the bituminous binder in the form of a melt having a temperature above 130 °. C, with an aqueous phase, which consists of water added with a water-soluble emulsifying agent and optionally with an agent regulating the pH of the emulsion, said contact being made under shear conditions suitable for dispersing the hydrocarbon phase under the form of separate droplets in the aqueous phase forming a continuous medium.
- a hydrocarbon phase consisting of the bituminous binder in the form of a melt having a temperature above 130 °. C
- an aqueous phase which consists of water added with a water-soluble emulsifying agent and optionally with an agent regulating the pH of the emulsion
- the temperature of the medium resulting from the contacting of the hydrocarbon phase with the aqueous phase is greater than 100 ° C., boiling temperature of water at atmospheric pressure, said medium must be maintained under a pressure sufficient to prevent boiling of water.
- the emulsion produced in the emulsion-forming zone is then cooled, under this pressure, in a cooling zone, to a temperature below 100 ° C., then the cooled emulsion is expanded to atmospheric pressure. , to then be directed to a storage area or to be loaded into a spreading truck.
- aqueous emulsion without addition of emulsifying agent to the system if operating at temperatures above 130 ° C and more particularly ranging from 170 ° C to 250 ° C.
- the subject of the invention is therefore a process for preparing an aqueous emulsion of a bituminous binder, in which the bituminous binder and an aqueous phase are brought into contact, for a time sufficient to produce the emulsion, at a temperature higher than 130 ° C and under a pressure such that the aqueous phase remains in the liquid state at this temperature, said process being characterized in that the bituminous binder has an interfacial tension bituminous binder / water, whose value, measured at 180 ° C by the hanging drop technique, is at most equal to 20mN / m, and in that the aqueous phase, brought into contact with the bituminous binder, is free of emulsifying agent.
- the bituminous binder has an interfacial bituminous binder / water tension, the value of which, measured at 180 ° C. by the hanging drop technique, is between 5 mN / m and 20 mN / m.
- the bituminous binder and the aqueous phase are introduced continuously into the emulsion formation zone, either simultaneously and separately or after having been premixed.
- the bituminous binder and the aqueous phase When brought to the emulsion formation zone, the bituminous binder and the aqueous phase have a temperature and a pressure substantially equal to the temperature and the pressure prevailing in the emulsion formation zone.
- the temperature in the emulsion forming zone is maintained at a value ranging from 170 ° C. to 250 ° C.
- the emulsion produced in the emulsion-forming zone is then cooled to a temperature below 100 ° C. in a cooling zone maintained under a pressure substantially equal to the pressure prevailing in the emulsion-forming zone, then the cooled emulsion is expanded to atmospheric pressure, to be then directed to a storage area or to a place of use, for example after loading in a spreading truck.
- the respective amounts of bituminous binder and of aqueous phase used to form the emulsion are advantageously such that the ratio of the mass flow of the bituminous binder to the mass flow of the aqueous phase, which are brought to the premix or injected simultaneously and separately into the zone of emulsion formation, has a value ranging from 40:60 to 90:10 and preferably from 55:45 to 85:15.
- bituminous binder which is put into aqueous emulsion by the process according to the invention can consist of bitumen or bitumen additive, or in a mixture of bitumens with or without additives, or in a bitumen / polymer composition, that is to say in a bitumen modified by the addition of one or more polymers, which has the characteristics of bituminous binder interfacial tension / water defined above.
- bitumen or bitumens which constitute all or part of the bituminous binder, can be, in particular, bitumens obtained from the direct distillation or from the distillation under reduced pressure of crude oil or coal, blown or semi-blown bitumens obtained from of an oxidation treatment of the above bitumens by injection of air or oxygen at a temperature above 160 ° C., with or without the use of catalyst, deasphalting residues by solvents, in particular propane or pentane, residues of thermal conversion treatment or visbreaking residues, residues from catalytic conversion treatment (cracked sludge), or even certain petroleum fractions or mixtures of bitumens and distillates under vacuum, or even hydrocarbon products from the recovery of used materials such as tires or waste oils.
- the additive added to the bitumen to give the additivated bitumen can be chosen in particular from the group formed by naphthenic acid, asphaltene peptizers and abietic acid.
- bitumen / polymer composition which can constitute the bituminous binder used according to the invention, can be, subject to having the interfacial tension characteristics of bituminous binder / water according to the invention, any of the products obtained from a bitumen, in particular a bitumen as defined above, added with one or more polymers of elastomer type and / or plastomer type, and optionally modified by reaction with this or these polymers, if necessary in the presence of a coupling agent, for example a coupling agent of the sulfur donor type and / or of the functionalizing agent type.
- a coupling agent for example a coupling agent of the sulfur donor type and / or of the functionalizing agent type.
- the amount of polymer In the composition of the bitumen / polymer type, obtained in the presence or not of a coupling agent and / or a functionalizing agent, the amount of polymer generally represents 0.5% to 25%, preferably 0.7% at 15% and more especially 1% to 5% of the weight of bitumen.
- the polymers which may be present in the bitumen / polymer composition can be chosen from the various polymers which are combined with bitumens in the bitumen / polymer compositions.
- said polymers can be, for example, elastomers such as polyisoprene, butyl rubber, polybutene, polyisobutene, polyacrylates, polymethacrylates, polynorbomene, ethylene / propylene copolymers, ethylene / propylene / diene terpolymers (EPDM terpolymers) and more especially styrene and diene copolymers conjugate having a structure of random copolymers or a structure of linear or star block copolymers, with or without statistical hinges.
- elastomers such as polyisoprene, butyl rubber, polybutene, polyisobutene, polyacrylates, polymethacrylates, polynorbomene, ethylene / propylene copoly
- such copolymers of styrene and of conjugated diene can be copolymers of styrene and of butadiene, of styrene and of isoprene, of styrene and of chloroprene, of styrene and of carboxylated butadiene or of styrene and of carboxylic isoprene, said copolymers advantageously having a weight content of styrene ranging from 5% to 50% by weight and preferably having a weight average molecular weight of between 10,000 and 600,000 and more especially between 30,000 and 400,000.
- polymers which may be present in the bitumen / polymer composition, whether or not in combination with elastomers, can also be copolymers of olefins and vinyl monomers such as ethylene / vinyl acetate copolymers, ethylene / acrylic ester copolymers , ethylene / vinyl chloride copolymers, functionalized olefin polymers containing epoxy or COOH groups such as ethylene / acrylate or glycidyl methacrylate copolymers, ethylene teri-polymers / alkyl methacrylate / acrylate or glycidyl methacrylate and especially ethylene / acrylate terpolymer methyl / glycidyl methacrylate and ethylene terpolymers / alkyl aciylate or methacrylate / maleic anhydride and in particular ethylene terpolymer / butyl acylate / maleic anhydride.
- the polymers can also be flu
- Bitumen / polymer compositions which can provide bituminous binders of the bitumen / polymer type, capable of being emulsified according to the invention, are in particular the bitumen / polymer compositions crosslinked with sulfur, obtained as described in WO-A-9847966 and the U.S. Patent Nos. 4,145,322, No. 4,242,246, No.
- bitumen / functionalized elastomer compositions obtained as described in the patents of United States N ° 5 804 619 and N ° 5 883 162, which have the characteristics of bituminous / water binder interfacial tension defined above.
- bituminous binder used in the process according to the invention has a dynamic viscosity having a value, measured at 160 ° C., of between 0.01 Pa.s and 4 Pa.s and preferably between 0.08 Pa.s and 2 Pa.s.
- the aqueous phase which is used in the implementation of the method according to the invention, consists of water free of emulsifying agent. If necessary, said phase can be added with a compound making it possible to adjust the pH of the emulsion to the desired value.
- the shear applied in the formation zone, of emulsion can be obtained using a device with a rotor / stator structure or else a device of the static mixer type, which constitutes said zone, or else Ease of any other type of system to generate an appropriate shear.
- Devices with rotor / stator structure are generally of the cone / cone or disc / disc type with smooth or grooved surfaces.
- the rotor and the stator respectively constitute the mobile part and the fixed part of the device and are separated by a very narrow air gap, namely with a thickness of a few tenths of a millimeter to a few millimeters, which ensures the shearing and causes the dispersion of the binder.
- Static mixer type devices are designed to inject one phase into the other at very high speed.
- any emulsion-forming zone which consists of a device with a rotor / stator structure, for example a colloid mill, or a device for static mixer type, and which is equipped with means for maintaining its temperature at values greater than 130 ° C and up to 250 ° C and means for maintaining its pressure at values greater than 3.10 5 Pa (3 bars) and up to 50.10 5 Pa (50 bars) or more.
- bituminous binder emulsion obtained by the process according to the invention can be used for the production of coatings and in particular road coatings of the surface coating type, for the production of hot or cold mixes, or else for the production of waterproofing coatings.
- bituminous binder emulsion produced according to the invention with control emulsions of bituminous binder.
- a control aqueous emulsion is prepared from a bituminous binder A, consisting of a bitumen having a dynamic viscosity at 160 ° C of between 0.08 Pa.s and 0.1 Pa.s and a bitumen / water interfacial tension at 180 ° C., measured by the hanging drop technique, equal to 23 mN / m, and of an aqueous phase obtained by dispersion, with stirring, of 6 parts of an emulsifying agent, consisting of a polypropylene diamine tallow, in 340 parts of water maintained at 50 ° C, then addition of 4 parts of hydrochloric acid at 20 ° Baumé to the dispersion obtained.
- a bituminous binder A consisting of a bitumen having a dynamic viscosity at 160 ° C of between 0.08 Pa.s and 0.1 Pa.s and a bitumen / water interfacial tension at 180 ° C., measured by the hanging drop technique, equal to 23
- a colloid mill consisting of a concentric stator and rotor of frustoconical shape, having a large diameter equal to 50mm and an air gap (space between the lateral surfaces facing the rotor and the stator ) having a thickness of
- the emulsion from the colloid mill is collected directly in an open container and cooled naturally to room temperature, after hermetically sealing the container to avoid any evaporation of water.
- an aqueous control emulsion is prepared from a bituminous binder B, consisting of a bitumen having a dynamic viscosity at 160 ° C between 0.08 Pa.s and 0.1 Pa.s and a bitumen / water interfacial tension at 180 ° C, measured by the hanging drop technique, equal to 17 mN / m.
- the emulsion from the colloid mill is collected directly in an open container and cooled naturally to room temperature after hermetically sealing the container to avoid any evaporation of water.
- aqueous control emulsion is prepared from the bituminous binder A defined in Example 1 and from an aqueous phase obtained by adding, under stirring, of 4 parts of hydrochloric acid at 20 ° Baumé to 346 parts of water maintained at room temperature, the emulsion being produced at high temperature, namely 180 ° C.
- a colloid mill consisting of a concentric frustoconical stator and rotor having a large diameter equal to 50mm and an air gap (space between the lateral surfaces facing the rotor and the stator) having a thickness of 0.3mm.
- bituminous binder in the molten state and the aqueous phase at the rate of 650 parts of bituminous binder per 350 parts of aqueous phase.
- the bituminous binder and the aqueous phase are brought respectively to a temperature of 180 ° C., by in-line reheating in heat exchangers heated by electrical resistances, arranged upstream of the colloid mill, before their injection into the latter.
- the emulsion from the colloid mill is subjected to cooling by passage through a tube bundle heat exchanger cooled by circulation of water at room temperature.
- a valve calibrated at a pressure of 12.10 5 Pa (12 bars) mounted at the outlet of the tube bundle heat exchanger, maintains the entire volume including the colloid mill under a minimum pressure of 12.10 5 Pa (12 bars) , the heat exchangers and the tube bundle exchanger, in order to prevent any vaporization of water throughout the duration of the implementation of the emulsification.
- the emulsion leaving the tared valve is collected directly in an open container and cooled naturally to room temperature, after hermetically sealing the container to avoid any evaporation of water.
- an aqueous emulsion according to the invention is prepared from the bituminous binder B defined in Example 2.
- the emulsion leaving the tared valve is collected directly in an open container and cooled naturally to room temperature, after hermetically sealing the container to avoid any evaporation of water.
- the characteristics of the emulsion are determined after standing overnight at room temperature and after homogenization of the sample. using a manual agitator.
- bituminous binders having an interfacial bituminous binder / water tension at 180 ° C. not exceeding 20 mN / m can be emulsified in aqueous emulsion, operating at higher temperatures. at 130 ° C.
- the aqueous emulsions thus obtained having characteristics, in particular of stability, comparable to the aqueous emulsions produced according to conventional techniques comprising the addition of an emulsifying agent to the aqueous phase brought to the emulsion formation zone (Example control 2).
- bituminous binders having an interfacial bituminous binder / water tension at 180 ° C greater than 20 mN / m, it is not possible to obtain a stable aqueous emulsion by operating at high temperature with an aqueous phase free of d emulsifier
- Example witness 3 With such bituminous binders, it is necessary to add an emulsifying agent to the aqueous phase, brought to the emulsion forming zone, to produce an aqueous emulsion of the bituminous binder, which has characteristics and in particular satisfactory stability (Example witness 1).
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Dispersion Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0115293A FR2832722B1 (fr) | 2001-11-27 | 2001-11-27 | Procede de production d'une emulsion aqueuse d'un liant bitumineux sans ajout d'agent emulsifiant |
| FR0115293 | 2001-11-27 | ||
| PCT/FR2002/004035 WO2003046081A1 (fr) | 2001-11-27 | 2002-11-25 | Procede de production d'une emulsion aqueuse d'un liant bitumineux sans ajout d'agent emulsifiant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1451253A1 true EP1451253A1 (fr) | 2004-09-01 |
Family
ID=8869810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02791905A Withdrawn EP1451253A1 (fr) | 2001-11-27 | 2002-11-25 | Procede de production d'une emulsion aqueuse d'un liant bitumineux sans ajout d'agent emulsifiant |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1451253A1 (fr) |
| AU (1) | AU2002358209A1 (fr) |
| FR (1) | FR2832722B1 (fr) |
| WO (1) | WO2003046081A1 (fr) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60152570A (ja) * | 1983-12-16 | 1985-08-10 | デブリン・ペイント・カンパニー | 可とう性、耐水性塗料の製造方法 |
-
2001
- 2001-11-27 FR FR0115293A patent/FR2832722B1/fr not_active Expired - Fee Related
-
2002
- 2002-11-25 EP EP02791905A patent/EP1451253A1/fr not_active Withdrawn
- 2002-11-25 AU AU2002358209A patent/AU2002358209A1/en not_active Abandoned
- 2002-11-25 WO PCT/FR2002/004035 patent/WO2003046081A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03046081A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2832722A1 (fr) | 2003-05-30 |
| AU2002358209A1 (en) | 2003-06-10 |
| WO2003046081A1 (fr) | 2003-06-05 |
| FR2832722B1 (fr) | 2004-02-13 |
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