Classifications

• • 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
  • E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
  • E01C7/358—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with a combination of two or more binders according to groups E01C7/351 - E01C7/356
• • 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
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D195/00—Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch
  • C09D195/005—Aqueous compositions, e.g. emulsions
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins

Definitions

• the present invention relates to a loaded composite emulsion based on a bituminous binder and one or more resin (s) for road surface protection layer against attack by petroleum derivatives.
• the invention therefore has applications in civil and military engineering.
• materials which have been soluble in organic solvents have hitherto been used, which gives the coating thus formed poor resistance to kerosene, organic oils, and hydrocarbons in general.
• the road surface layers are susceptible to receiving such substances which damage them. It is therefore desirable to use materials which give the resulting coatings excellent chemical resistance to organic oils, kerosene and hydrocarbons in general, in particular for road coatings, industrial floors, parking lots, garages at service stations, airport runways, etc.
• toxic products are meant in the present invention, a product which, by the carcinogenic substances which it contains, must be subjected to classification and labeling according to the regulations in force at present in France.
• patent EP-231,417 describes an epoxy resin mixed with a bitumen emulsion and a crosslinking agent to improve its permeability to water vapor and its adhesion to metal.
• it is a composition intended to modify the characteristics of the resin, which is in pasty, non-emulsified form and therefore difficult to manipulate.
• Application FR-A-2,366,342 proposes a composition having the same constraints.
• EP-695,788 belonging to the applicant, a composite emulsion giving a coating formed excellent chemical resistance to organic oils, kerosene and hydrocarbons in general, having no toxicity, neither during manufacture, nor during of its application, nor during the duration of its service, and free of solvent and any other substance likely to harm the environment.
• This composite emulsion can be applied cold to a traffic surface on site.
• This composite emulsion for surface layer or circulation surface is produced from a first emulsion comprising a bituminous binder and a crosslinking agent and a second emulsion comprising a resin.
• the bituminous binder and the resin are therefore each used in the form of an emulsion in water.
• the present invention proposes to remedy these drawbacks by means of a bitumen / resin composite emulsion for a surface protection layer for road surfaces against attacks by petroleum derivatives produced from the mixture of a first emulsion comprising at least one resin with a second. emulsion comprising a bituminous binder and a resin crosslinking agent.
• This type of protection is also called A.K.
• the composite emulsion further comprises a filler, said filler comprising individually or in combination at least one of the following elements defined by standard XP P 18-540:
• combination corresponds to all possible mixtures of the three charge elements.
• the filler is mineral.
• the filler is siliceous.
• the rate of the charge is between 10 and 90% by weight in the charged composite emulsion.
• the rate of the charge is preferably between 25 and 50% by weight in the charged composite emulsion.
• the charge rate is optimized at 35% plus or minus 5% by weight in the charged composite emulsion.
• the filler is incorporated into the emulsion comprising the bituminous binder.
• the filler is incorporated into the emulsion comprising resin.
• the filler is incorporated into the composite emulsion.
• the loaded composite emulsion further comprises a pigment preparation.
• the pigment preparation is a liquid, solid or pasty coloring product and preferably of dark coloring.
• the rate of the pigment preparation is between 0.05 and 2% by weight, the percentage being calculated relative to the composite emulsion loaded outside the weight of the load.
• the coloring product is incorporated into the emulsion comprising the bituminous binder.
• the coloring product is incorporated into the emulsion comprising resin.
• the coloring product is incorporated into the filler.
• the coloring product is incorporated into the composite emulsion.
• the resin is of the epoxy type.
• the resin is chosen from liquid epoxy resins and solid emulsified epoxy resins. - one or more resins with known rheological properties are used in the emulsion comprising resin to adjust the rheological behavior of the loaded composite emulsion.
• one or more liquid resins are associated with one or more solid resins in the emulsion comprising resin.
• one or more solid emulsified epoxy resins are used in the emulsion comprising resin.
• the crosslinking agent is in excess relative to the stoichiometry in the emulsion comprising the bituminous binder.
• the crosslinking agent is introduced at a rate of 1.7 to 1.1 times relative to the stoichiometry.
• the crosslinking is fully ensured compared to the case where the crosslinking agent is provided in a stoichiometric ratio. Indeed, part of the crosslinking agent is made inactive to ensure crosslinking because it is trapped by the other constituents of the loaded composite emulsion.
• the percentage of resin in the emulsion containing resin can reach 80% by weight.
• the percentage of resin in the emulsion comprising the resin is preferably between 50% and 80% by weight.
• the loaded composite emulsion is used for producing a thin film type surface coating produced in one or more layers.
• each new layer can only be applied after drying and polymerization of the previous layer.
• the thickness of a layer is between 0.1 and 2 mm.
• the thickness of a layer is preferably between 0.5 and 1.2 mm.
• the loaded composite emulsion is used at a rate of 500 g / m 2 to 1 kg / m 2 ; - several fillers are used;
• Bituminous binder is understood to mean a binder, either consisting of bitumen alone, or modified by the addition of a polymer, or fluidized by an oil. This term is retained when a crosslinking agent is incorporated into this product.
• the term “resin” denotes any chemical entity which, by reaction with an appropriate crosslinking agent, leads to the production of a three-dimensional molecular network. These are two-component systems. They are chosen so that this system is active at room temperature. Of course, the nature of the crosslinking agent depends on the nature of the resin used. These resins are epoxy type resins.
• Epoxy type resins are liquid or solid resins.
• these are linear epoxy resins. They are conventionally obtained by polycondensation in an alkaline medium of a bisphenol A or F derivative and of epichlorohydrin. This derivative is preferably diglicydylether of bisphenol A.
• Softer epoxy resins can be obtained from polyglycol derivatives. It is also possible, within the framework of the invention, to use a mixture of two or more different epoxy resins. These epoxy functional resins react with a chemical compound which is an amino functional crosslinking agent; this reaction takes place at room temperature (10 ° C ⁇ t o ⁇ 60 ° C).
• the stoichiometry for the crosslinking reaction with the epoxy resin and the crosslinking agent corresponds to bringing the epoxy function of the resin into contact with an active hydrogen of the crosslinking agent.
• the loaded composite emulsion has better behavior against environmental cycles because it has a reduced coefficient of thermal expansion. It has mechanical resistance to improved traffic. It has a lower manufacturing and implementation cost. It is more manageable because the polymerization time is extended, which lengthens the period of workability. Finally, it is simple to use, the end user only having to mix two products, or even three products in the case where the filler is not additive beforehand in one of the two emulsions. In the latter case, the two emulsions are sufficiently fluid to be pumped separately.
• FIG. 1 represents the results of a comparative test.
• a thin protective film is produced placed on a bituminous mix or any other support to be protected against chemical attack.
• the products necessary for producing the thin film are in the form of a kit for three components which are the two emulsions and the filler.
• the loaded composite emulsion is produced by mixing a first emulsion comprising the bituminous binder and the crosslinking agent with a second emulsion comprising resin and with the filler. After application in a layer of the loaded composite emulsion and chemical reaction (crosslinking), a protection of 0.1 to 2 mm thick depending on the dosage is obtained. The protection is intended to prevent contact between an aggressive agent and the underlying coating.
• a comparative test was carried out in order to compare the resistance of a composite emulsion loaded according to the invention and an emulsion of coal pitch with a protective vocation AK
• a first group of plates in duralumin® was covered by the emulsion of the invention and a second group by the coal pitch.
• the plates were placed for 4 and 48 hours in kerosene and the mass loss was measured.
• the following graph gives the value of the mass loss in%. It can be seen that the emulsion according to the invention has a much higher resistance.
• curve E corresponds to the emulsion of the invention and curve B to pitch.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Organic Chemistry (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Materials Engineering (AREA)
• Medicinal Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• Polymers & Plastics (AREA)
• Architecture (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Road Paving Structures (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Paints Or Removers (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9547723

Family Applications (1)

Country Status (11)

Families Citing this family (12)

Family Cites Families (6)

• 1999
  • 1999-07-05 FR FR9908658A patent/FR2796075B1/fr not_active Expired - Fee Related
• 2000
  • 2000-07-05 AU AU62938/00A patent/AU6293800A/en not_active Abandoned
  • 2000-07-05 CZ CZ2001765A patent/CZ2001765A3/cs unknown
  • 2000-07-05 EP EP00949645A patent/EP1115793A1/fr not_active Withdrawn
  • 2000-07-05 SK SK275-2001A patent/SK2752001A3/sk unknown
  • 2000-07-05 WO PCT/FR2000/001934 patent/WO2001002491A1/fr not_active Ceased
  • 2000-07-05 HU HU0104995A patent/HUP0104995A3/hu unknown
  • 2000-07-05 PL PL00346420A patent/PL346420A1/xx unknown
  • 2000-07-05 US US09/786,397 patent/US6559206B1/en not_active Expired - Fee Related
  • 2000-07-05 JP JP2001508271A patent/JP2003504446A/ja active Pending
  • 2000-07-05 CA CA002342713A patent/CA2342713A1/fr not_active Abandoned

Non-Patent Citations (1)

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