EP2653278B1 - Composition protectrice - Google Patents

Composition protectrice Download PDF

Info

Publication number
EP2653278B1
EP2653278B1 EP13305498.1A EP13305498A EP2653278B1 EP 2653278 B1 EP2653278 B1 EP 2653278B1 EP 13305498 A EP13305498 A EP 13305498A EP 2653278 B1 EP2653278 B1 EP 2653278B1
Authority
EP
European Patent Office
Prior art keywords
fire retardant
solvent
retardant
weight
protective composition
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.)
Not-in-force
Application number
EP13305498.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2653278A1 (fr
Inventor
Roland Bijon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ADPTCF Agence de Distribution De Produits de Traitements Contre le Feu
Original Assignee
ADPTCF Agence de Distribution De Produits de Traitements Contre le Feu
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
Priority claimed from FR1253576A external-priority patent/FR2989612A1/fr
Application filed by ADPTCF Agence de Distribution De Produits de Traitements Contre le Feu filed Critical ADPTCF Agence de Distribution De Produits de Traitements Contre le Feu
Publication of EP2653278A1 publication Critical patent/EP2653278A1/fr
Application granted granted Critical
Publication of EP2653278B1 publication Critical patent/EP2653278B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B27K3/32—Mixtures of different inorganic impregnating agents

Definitions

  • the invention is in the field of compositions and methods for treating media used in buildings, particularly hydrophilic materials, including treatments for protecting wood or plants subjected to bad weather. They apply in particular to flame retardant treatments of wood and building plants of all types.
  • compositions exist for the purpose of improving the fire and heat resistance of wood and wood-based materials, or more generally of hydrophilic materials, which are used in the composition of building structures or in external cladding. These compositions are absorbed by the material and have the effect of retarding the propagation of the flame in the material.
  • Requirement FR 2 946 053 filed by the Applicant describes for example an innovative flame retardant composition.
  • compositions are effective for interior woods, for example framing, but have the disadvantage of having their effectiveness disappear gradually by washing when the material is outside the building and is subjected to weathering.
  • Paint and varnish provide some protection, but the layer of paint or varnish, consisting mainly of resins and a binder, is flammable.
  • MCM Mobilizable Fuel
  • composition may be presented, for its application, either in fluid form (liquid or pasty), or in powder form.
  • the coating product protects the substrate, but when applied and dry, it may be flammable, especially if it includes a resin. Fire retardant limits this flammability.
  • the supports targeted by the invention are preferably but not only hydrophilic materials such as plant materials, wood and other vegetable fiber materials. These materials have advantageously been the subject, beforehand, of a flame retardant impregnation having a base with low hygroscopicity vis-à-vis humidity variations.
  • the fire retardant may be a mineral retardant.
  • a fire retardant mineral absorbs some of the heat generated by the fire without participating in the spread of fire or the degradation of the support by fire.
  • the coating product may be a water-repellent solution.
  • a water-repellent solution applied to a hydrophilic material renders this material hydrophobic. As a result, flame retardants that have been impregnated will not be washed out by the weather.
  • the water-repellent solution may comprise a synthetic resin.
  • Synthetic resins are derived from hydrocarbons, for example acrylic resins, ketone resins, polyurethanes, aminoplasts. Acrylic resins have many advantages, including that of accepting water as a solvent.
  • the protective composition may further comprise a pigment.
  • Pigmentation reduces the effects of efflorescence or crazing and, particularly with the help of a brown pigment, protects the material against UV aggressions.
  • the coating product may be a film-forming coating.
  • film-forming coating any coating which forms a protective film on the support on which it is deposited, such as a paint or varnish, whatever the nature of the solvent, water or organic solvent, and whatever the form under which is presented for deposit, liquid, pasty or powder.
  • the paints and varnishes form after drying or crosslinking a thin film, adherent and resistant, which provides some protection against bad weather media to which they are applied. As a result, they also contribute to the preservation of flame retardants whose support material has been impregnated.
  • Powder paints have a special case. These paints are applied in powder form and require a step of curing by passage in an oven or UV. In the case of a passage in the oven, the cooking temperature is about 180 ° C, which is compatible with the fire retardant introduced into the composition, which begins to degrade at 240 ° C.
  • Powder coatings are mainly applied to metal substrates, but they can also be applied to a wood substrate, especially in the context of UV curing.
  • the coating product may be a water-repellent composition or a film-forming coating such as a paint or varnish, whether in liquid or pasty form.
  • the mixing step is delicate.
  • the mixing time is a function of the quantity prepared at one time. In general, the greater the amount prepared, the greater the mixing time must be.
  • the common solvent will obviously be water, preferably demineralized.
  • the first solvent and the solvent of the paint must be compatible; the first solvent will be for example white spirit.
  • the volume of the first solvent must then be added to the coating product without denaturing this product, it must not be excessive, for example less than or equal to 10% of the initial volume of coating product to be treated.
  • a brewing time of at least two hours is recommended.
  • the pigment is advantageously added after mixing the fire retardant in the protective composition, but it may be added before or at the same time.
  • the pigment is also in the form of a very fine powder, its mixture is also delicate. A brewing time of at least two hours is recommended.
  • a mixer comprising at least first and second stirrers rotating in the opposite direction so as to obtain a homogeneous mixture.
  • the objective is to create turbulence and shear within the mixture in order to homogenize the mixture.
  • this material will advantageously be previously impregnated with a flame-retardant composition.
  • the flame retardant compositions may contain a wetting agent incompatible with the protective composition according to the invention. In this case, it is appropriate to wait until the material is stabilized before application of the protective composition, ie, in the case of a plant material, that it has found its normal relative humidity for its structure and its essence.
  • the protective composition is film-forming, such as a paint or varnish, wetting adjuvant should not be used in the flame retardant composition.
  • the coating product comprises a water-repellent solution which is a composition known as Coating Aqua / H-Wood TM. It is an acrylic-based composition, further comprising H 3 O + hydronium ions, ammonium chloride and at most 2% of benzyldimethyl chloride.
  • the water solvent content is 3%. The solvent being aqueous, this solution enters the plant materials.
  • the pH of this composition is substantially equal to 8 at a temperature of 20 ° C. Its density is close to 996 g / l (DIN 53217 method).
  • the amount of fire retardant has an effect on the density of the fumes: the longer the composition is loaded, the less fumes are dense and opaque.
  • the fire retardant may be a product known as Security Fire LH 15 TM, whose density is about 260 kg / m 3 .
  • the composition thus prepared is substantially colorless. It is advantageous to color it.
  • the dye is advantageously a brown pigment, or of another color, the important thing being that it does not participate in the fire, preferably a mineral pigment. This pigment protects the materials against UV.
  • the composition may be provided with several dosages of this pigment, especially between 0.20 and 1.0 gram of pigment per liter of composition.
  • the dosage of pigment will of course depend on the color that is desired.
  • the invention also relates to a process for preparing the protective composition.
  • the mixing steps are delicate because the products in fine powder (retardant fire, pigment) do not incorporate easily to the water-repellent solution.
  • the temperature at the time of mixing must not exceed 19 ° C.
  • the propeller turbine may have several stages.
  • the speed of rotation of the finned turbine is advantageously between 600 and 1800 rpm, preferably between 650 and 800 rpm, and that of the propeller turbine between 400 and 1000 rpm, preferably between 450 and 650 rpm.
  • the coating product comprises a film-forming coating such as a paint or varnish.
  • a film-forming coating such as a paint or varnish.
  • the process for preparing the protective composition starts by stirring the paint or varnish for about 15 minutes so as to homogenize it well.
  • the fire retardant for example Security Fire LH 15 TM mentioned above, is then incorporated by gently depositing the powder in the paint or varnish while constantly stirring and ensuring its good dispersion in the paint.
  • the proportion of fire retardant to be incorporated depends on the desired result as regards the opacity of the fumes in case of fire. It is generally between 11 and 17% by weight. After complete incorporation, stirring is continued for about one hour.
  • an agitator equipped with several blades on several levels for example an upper impeller with a propeller and a lower impeller with blades, rotating in opposite directions.
  • the temperature at the time of mixing not exceed 14 ° C.
  • a variant of the manufacturing process comprises a preliminary step of mixing retardant fire in a solvent.
  • a water-repellent solution, a paint (except in the case of a paint in powder form) or a coating comprises a solvent, and the coating product can accept a certain proportion of solvent without becoming too liquid to be usable, generally about 10% in weight.
  • the solvent will of course be identical or compatible with the solvent of the coating product.
  • the fire retardant is incorporated in the solvent, the mixture is added to the coating product which has been stirred beforehand. Then it is stirred for about two hours.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Paints Or Removers (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
EP13305498.1A 2012-04-18 2013-04-17 Composition protectrice Not-in-force EP2653278B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1253576A FR2989612A1 (fr) 2012-04-18 2012-04-18 Composition protectrice du bois.
FR1257908A FR2989613A1 (fr) 2012-04-18 2012-08-21 Composition protectrice.

Publications (2)

Publication Number Publication Date
EP2653278A1 EP2653278A1 (fr) 2013-10-23
EP2653278B1 true EP2653278B1 (fr) 2015-07-15

Family

ID=48182865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13305498.1A Not-in-force EP2653278B1 (fr) 2012-04-18 2013-04-17 Composition protectrice

Country Status (3)

Country Link
EP (1) EP2653278B1 (es)
ES (1) ES2550343T3 (es)
FR (1) FR2989613A1 (es)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003246640A1 (en) * 2002-07-01 2004-01-19 Ucb, S.A. Water-thinnable polymer precursors, their preparation and use
AU2006279671A1 (en) * 2005-08-15 2007-02-22 Osmose, Inc. Water repellent composition for improving wood product dimensional stability
CA2620526C (en) * 2005-08-25 2012-01-03 Osmose, Inc. Layered wood composites
CN101678635A (zh) * 2007-03-23 2010-03-24 世界矿物公司 金属化合物涂布的颗粒矿物材料、其制造方法和其用途
FR2946053B1 (fr) 2009-05-28 2012-11-23 Adptcf Agence De Distrib De Produits De Traitements Contre Le Feu Composition ignifugeante pour le traitement de materiaux combustibles et hygroscopiques, procedes de preparation et d'utilisation.

Also Published As

Publication number Publication date
EP2653278A1 (fr) 2013-10-23
FR2989613A1 (fr) 2013-10-25
ES2550343T3 (es) 2015-11-06

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