Classifications

• • 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
  • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
  • C09D133/04—Homopolymers or copolymers of esters
  • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
  • C09D133/062—Copolymers with monomers not covered by C09D133/06
  • C09D133/064—Copolymers with monomers not covered by C09D133/06 containing anhydride, COOH or COOM groups, with M being metal or onium-cation
• • 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
  • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
  • C09D5/02—Emulsion paints including aerosols
  • C09D5/024—Emulsion paints including aerosols characterised by the additives
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
  • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
  • E01F9/506—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivity; Methods of forming, installing or applying markings in, on or to road surfaces
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
  • C08L33/24—Homopolymers or copolymers of amides or imides
  • C08L33/26—Homopolymers or copolymers of acrylamide or methacrylamide

Definitions

• the present invention relates to an accelerator for the drying time of an aqueous paint comprising:
• a polymeric binder in aqueous dispersion a dispersant consisting of an emulsion polymerization agent, and
• the mineral particles of the paint can in particular comprise pigments and fillers.
• the invention also relates to an aqueous paint and a method of applying such a paint corresponding to the drying time accelerator.
• Horizontal markings in particular for the drawing of road markings, are usually made from an application machine equipped with paint sprayers and reflective ball dispensers.
• solvent road paints
• solvent-based solvent-based
• the emulsion polymerization agent allowing the polymer dispersion is generally constituted by anionic charge surfactants, which subsequently stabilize the dispersion of particles of the polymer binder.
• the disadvantage of this type of paint is that the drying time is generally longer than in the case of a solvent-based paint. Indeed, the formation of the continuous film of binder takes place by evaporation of the water. However, it is less volatile than the solvents usually used for solvent-based paints. The drying time is particularly long in the presence of significant humidity in the ambient air and when the paint is applied at cool temperatures. However, it is desirable that the resumption of service of the roadway be rapid to avoid traffic jams and facilitate the smooth running of the various operations of the site.
• the subject of the present invention is an accelerator for the drying time of an aqueous paint as defined above, which allows rapid drying of the paint with regard to existing methods, including during the significant presence of nonionic emulsifier. .
• the accelerator of the invention can also make it possible to obtain a high resistance against wear and aging due to bad weather, and to avoid degradation of the appearance of the paint over time.
• the accelerator of the invention may also have the advantages of not having any toxic or aggressive character for health and the environment and of being able to be used in particular in a weakly acidic environment or in a neutral environment.
• the invention also relates to an aqueous paint and a method of applying an aqueous paint, having the aforementioned advantages.
• the invention applies to an accelerator for the drying time of an aqueous paint comprising:
• a polymeric binder in aqueous dispersion a dispersant consisting of an emulsion polymerization agent, and
• the accelerator has a polymer structure, is water-soluble and has cationic charges.
• the accelerator acts both by coagulation and by bridging between the binder particles.
• This accelerator can for example make it possible to reduce the drying time of the paint by more than 30 minutes under the usual average conditions of application, to less than 2 minutes.
• the drying time accelerator is a mineral accelerator chosen from metal polychlorides, such as aluminum polychlorides, and metal polyoxychlorides, such as iron polyoxychloride.
• it consists of an organic accelerator chosen from cationic nitrogen polymers, in particular synthetic polymers derived from polyacrylamide.
• the accelerator has a dosage of between 0.2% and 2% of active material relative to the paint, and preferably between 0, 1% and 1%.
• the accelerator is included in a weakly acidic or neutral medium.
• the invention also relates to an aqueous paint comprising: - mineral particles,
• a dispersant consisting of an emulsion polymerization agent
• This aqueous paint is characterized in that the accelerator is in accordance with the invention.
• the paint comprises nonionic emulsifiers. These effectively help stabilize the binder particles.
• the polymeric binder is of the acrylic, styrene-acrylic and / or vinyl acrylic type.
• the invention also relates to a process for applying an aqueous paint to a support, according to which: the paint is sprayed onto the support, and
• a drying time accelerator is incorporated into the paint.
• This process is characterized in that the paint conforms to the invention.
• the reflective beads are preferably glass beads.
• the drying time accelerator can be applied by specific and independent equipment, by adding a complementary system to the paint application machines or by processing the latter.
• the incorporation into the accelerator paint can in particular be a spray by gravity or under pressure.
• the accelerator is incorporated into the paint after the distribution of the balls.
• the reflective balls are given time to be sufficiently well embedded in the paint film before rapid drying by adding the accelerator.
• the accelerator is directly incorporated into the paint when the paint is applied, before distributing the reflective beads.
• a tracing machine for road marking of the type marketed under the name TRASSAR 9, is modified so as to be able to incorporate therein under pressure a drying time accelerator.
• This machine is used for a field test aiming to compare the drying time of a usual paint without and with incorporation of the accelerator.
• the implementation successively comprises the steps of spraying the paint onto the floor, distributing glass beads in the paint and spraying under pressure the drying time accelerator.
• the paint is of the type marketed under the name POLLUX (INDASCO) and has a dosage after application equal to 630 g / m 2 .
• the glass beads are of the type marketed under the name AC07 and have a dosage after application equal to 180 g / m 2 .
• the accelerator for these charges is a mineral cationic polymer and has a dosage of 1% relative to the paint, in the accelerator test.
• an aqueous road paint of the type marketed under the name ORION (INDASCO) is deposited on the roadway. This deposition is carried out by spreading the paint with an applicator in a thin film of 400 ⁇ m. A drying time accelerator product is then sprayed on top of the paint, for example using a household cleaning product sprayer, the product being pure or diluted.
• the active ingredient of the accelerator consists of water-soluble cationic polymer, derived in this example from polyacrylamide.
• the paint is dry on the surface (more or less fine films),
• the accelerator because of its high viscosity, cannot be sprayed with the system used when it is pure or diluted up to 30%. With 10% and 30% dilutions, the paint is dry on the surface from the first minutes after spraying the accelerator and the surface stops sticking after about twenty minutes.
• Example 2 The procedure is the same as in Example 2, but with an accelerator consisting of a mineral metal oxide polymer.
• the results with the pure accelerator and diluted to 50% are set out in Table I II.
• the accelerator improves the complete drying time by about 10 minutes, even with 50% dilution (as in Example 3).

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Materials Engineering (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Dispersion Chemistry (AREA)
• Paints Or Removers (AREA)
• Application Of Or Painting With Fluid Materials (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9528912

Family Applications (1)

Country Status (10)

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Family Cites Families (8)

• 1998
  • 1998-07-22 FR FR9809380A patent/FR2781494B1/fr not_active Expired - Fee Related
• 1999
  • 1999-07-21 US US09/508,087 patent/US6333068B1/en not_active Expired - Fee Related
  • 1999-07-21 CA CA2304203A patent/CA2304203C/fr not_active Expired - Fee Related
  • 1999-07-21 SK SK385-2000A patent/SK287359B6/sk not_active IP Right Cessation
  • 1999-07-21 PL PL99339376A patent/PL339376A1/xx not_active Application Discontinuation
  • 1999-07-21 HU HU0004594A patent/HUP0004594A2/hu unknown
  • 1999-07-21 WO PCT/FR1999/001790 patent/WO2000005318A1/fr not_active Application Discontinuation
  • 1999-07-21 EP EP99932936A patent/EP1025174A1/fr not_active Withdrawn
  • 1999-07-21 CZ CZ20001021A patent/CZ301588B6/cs not_active IP Right Cessation
  • 1999-07-21 JP JP2000561270A patent/JP2002521520A/ja active Pending

Non-Patent Citations (1)

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