FR2463167A1 - Coating compsns. for outdoor application partic. masonry - comprise chemically drying resin binder in solvent - Google Patents
Coating compsns. for outdoor application partic. masonry - comprise chemically drying resin binder in solvent Download PDFInfo
- Publication number
- FR2463167A1 FR2463167A1 FR7921112A FR7921112A FR2463167A1 FR 2463167 A1 FR2463167 A1 FR 2463167A1 FR 7921112 A FR7921112 A FR 7921112A FR 7921112 A FR7921112 A FR 7921112A FR 2463167 A1 FR2463167 A1 FR 2463167A1
- Authority
- FR
- France
- Prior art keywords
- coating
- solvent
- resin binder
- masonry
- partic
- 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- Withdrawn
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/302—Water
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
Abstract
Description
La présente invention est relative à un enduit notamment destine à être applique sur un support extérieur. The present invention relates to a coating, in particular intended to be applied to an external support.
Généralement, mais non exclusivement, ce support sera un mur de briques, de parpaings, de béton, etc..., c'est-à-dire de façon générale un mur en maçonnerie. Generally, but not exclusively, this support will be a brick wall, concrete block, concrete, etc ..., that is to say generally a masonry wall.
Actuellement, lorsque l'on désire protéger et décorer un tel support, on y applique une couche dite "dégrossi d'enduit" à base d'un mélange de ciment et de sable servant de couche d'accrochage pour une ou deux couches d'enduit ensuite appliquée, puis on applique sur la dernière couche d'enduit une ou deux couches d'une peinture protectrice adaptée. Currently, when it is desired to protect and decorate such a support, a so-called "rough coating" layer is applied to it based on a mixture of cement and sand serving as a bonding layer for one or two layers of coating then applied, then one or two layers of a suitable protective paint are applied to the last layer of coating.
Dans les techniques actuelles connues, on utilise soit des enduits à base de liant hydraulique, c'est-à-dire de matériaux tels que le ciment, la chaux, le plâtre en solution aqueuse, soit des enduits à liant en émulsion, comme les enduits acryliques ou polyvinyliques. In current known techniques, either plasters based on hydraulic binder, that is to say materials such as cement, lime, plaster in aqueous solution, or plasters with emulsion binder, such as acrylic or polyvinyl coatings.
Dans l'un et l'autre cas, ces enduits doivent être préparés sur le chantier, ce qui est incommode; en outre, les enduits à base de liant hydraulique ne peuvent être appliqués que sur un support stabilisé sec, ce qui d'une part interdit de les appliquer par temps de pluie et d'autre part ne permet pas d'utiliser pour leur application des échafaudages ayant servi à la construction, lesquels sont généralement démontes au plus vite pour être réutilisés ; en outre, ces enduits souffrent d'une tendance à la micro-fissuration ; les enduits à liant en emulsion, comme les enduits acryliques ou polyvinyliques, présentent quant à eux l'incon vénient d'être thermo-plastiques, avec pour consequence le fait qu'ils retiennent les poussieres. Il ne peuvent s'appliquer par temps de pluie. In both cases, these plasters must be prepared on site, which is inconvenient; in addition, plasters based on hydraulic binder can only be applied on a dry stabilized support, which on the one hand prohibits them from being applied in rainy weather and on the other hand does not allow the use of scaffolding used for construction, which are generally dismantled as quickly as possible for reuse; in addition, these plasters suffer from a tendency to micro-cracking; emulsion binder coatings, such as acrylic or polyvinyl coatings, have the disadvantage of being thermoplastic, with the consequence that they retain dust. They cannot be applied in rainy weather.
Le but de la présente invention est de remédier à ces inconvénients, en proposant un enduit prêt à l'emploi, applicable même sur un support construit depuis peu et même si ce support est humide et par exemple exposé aux intemperies. The object of the present invention is to remedy these drawbacks by proposing a ready-to-use coating, applicable even on a support which has been recently built and even if this support is wet and for example exposed to the weather.
A cet effet, l'invention propose un enduit caracterise en ce qu'il comporte, en phase solvant, un liant à base de résines de synthèse, apte à sécher par réaction chimique. To this end, the invention provides a coating characterized in that it comprises, in the solvent phase, a binder based on synthetic resins, capable of drying by chemical reaction.
Selon un exemple de mise en oeuvre non limitatif de l'invention, l'enduit comporte, présentés en mélange en milieu solvant, un polyisocyanate destine à réagir avec l'eau de l'air ou du support pour former un polyurethane, en passant par un stade amine, un catalyseur destiné à accélérer cette réaction, un retardateur modérant l'action de ce catalyseur, un plastifiant destiné à assurer à l'enduit, après séchage, une plasticité lui permettant de résister sans se rompre à un certain jeu du support, des charges telles que de la silice dont l'adjonction à des enduits est connue en elle-même, et des pigments permettant de se dispenser de l'application d'une peinture sur l'enduit. According to an example of non-limiting implementation of the invention, the coating comprises, presented as a mixture in a solvent medium, a polyisocyanate intended to react with water in the air or the support to form a polyurethane, passing through an amine stage, a catalyst intended to accelerate this reaction, a retarder moderating the action of this catalyst, a plasticizer intended to ensure the coating, after drying, a plasticity allowing it to resist without breaking a certain play of the support , fillers such as silica, the addition of which to coatings is known in itself, and pigments making it possible to dispense with the application of a paint on the coating.
Un tel enduit presente l'avantage d'être applicable même sur un support humide, puisque l'eau du support peut jouer dans la polymérisation le même rôle que l'eau de l'air ambiant ; en outre, notamment du fait de la présence de plastifiants, on obtient un enduit excluant les risques de micro-fissuration ; en particulier, il est ainsi possible d'appliquer l'enduit dès que la construction du support est terminée, éventuellement après application d'un sous-enduit, ce qui permet de réaliser cette application alors que les échafaudages sont encore en place, de façon particulièrement commode ; le revêtement obtenu présente en outre l'avantage de rester micro-poreux, c'est-à-dire de conserver les possibilités d'echange d'eau entre le support, et notamment entre le ciment entrant généralement dans la composition de ce support, et l'air ambiant. Such a coating has the advantage of being applicable even on a wet support, since the water in the support can play the same role in polymerization as water in the ambient air; in addition, in particular due to the presence of plasticizers, a coating is obtained which excludes the risks of micro-cracking; in particular, it is thus possible to apply the coating as soon as the construction of the support is completed, possibly after application of an undercoat, which allows this application to be carried out while the scaffolding is still in place, so particularly convenient; the coating obtained also has the advantage of remaining micro-porous, that is to say of retaining the possibilities of water exchange between the support, and in particular between the cement generally used in the composition of this support, and the ambient air.
En outre, l'enduit obtenu présente les avantages inhérents au polyurêthane qui n'est pas dégradable et qui est auto-lavable. In addition, the coating obtained has the advantages inherent in polyurethane which is not degradable and which is self-washable.
La pose d'un tel enduit est particulièrement simple puisqu'il se présente en un seul emballage, sans imposer un melange sur le chantier. The installation of such a coating is particularly simple since it comes in a single package, without imposing a mixture on the site.
On pourra noter qu'il est déjà connu, dans le domaine des peintures et non dans celui des enduits, d'utiliser des compositions à base de polyisocyanate ; dans ces compositions, le polyisocyanate se trouve toutefois combiné au polyester ou au polyéter, avec lequel il reagit pour former un polyurethane ; afin d'éviter que cette reaction se produise de façon anticipée, la composition est presentée en deux emballages séparés, dont l'un continent le polyisocyanate et l'autre le polyester ou le polyéther, que l'on ne mélange qu'au moment de l'utilisation, pour les appliquer rapidement, en couche mince, sur le support où ils se poly mérisent lentement en polyuréthane. It will be noted that it is already known, in the field of paints and not in that of coatings, to use compositions based on polyisocyanate; in these compositions, the polyisocyanate is however combined with polyester or polyeter, with which it reacts to form a polyurethane; in order to prevent this reaction from happening in advance, the composition is presented in two separate packages, one of which contains polyisocyanate and the other polyester or polyether, which are only mixed at the time of use, to apply them quickly, in a thin layer, on the support where they are slowly polyurethane.
Outre qu'elle ne correspond pas à un enduit, c'est-à-dire à une substance dont la consistance se prête à une application en couche épaisse comme c'est par contre le cas de l'enduit selon l'invention auquel on inclut à cet effet des charges telles que de la silice, cette composition pour peinture n'échappe pas à l'inconvénient de la préparation sur le chantier pour une utilisation rapide, commun aux enduits traditionnels ; par contre, la composition selon l'invention est applicable direc tement, sans mélange sur le chantier ; et le polyisocyanate se polymérise en polyurethane sur le support. Besides that it does not correspond to a coating, that is to say to a substance whose consistency lends itself to application in a thick layer, as is the case, on the other hand, of the coating according to the invention to which for this purpose includes fillers such as silica, this composition for painting does not escape the disadvantage of preparation on site for rapid use, common to traditional coatings; on the other hand, the composition according to the invention is applicable directly, without mixing on the site; and the polyisocyanate polymerizes to polyurethane on the support.
On indique ci-après la composition du produit selon l'invention avec des fourchettes pour les differents composants ayant donné de bons résultats et toute satisfaction au cours de l'application. The composition of the product according to the invention is indicated below with ranges for the various components which have given good results and any satisfaction during application.
- Retardateur 1 à 5 % - Charges diverses 1 à 8 % - Solvants .............. 0 à 7 % - Retardateur 0,5 à 3 % - Plastifiant .... 5 à 10 % - Adjuvants divers 0,5 à 2 % - Pigments colorants 2 à 10 % - Liant de synthèse 2 à 8 %
Courbe granulométrique de silices diverses 40 à 70 % - Self-timer 1 to 5% - Miscellaneous charges 1 to 8% - Solvents .............. 0 to 7% - Self-timer 0.5 to 3% - Plasticizer .... 5 to 10 % - Various additives 0.5 to 2% - Color pigments 2 to 10% - Synthetic binder 2 to 8%
Particle size curve of various silicas 40 to 70%
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7921112A FR2463167A1 (en) | 1979-08-14 | 1979-08-14 | Coating compsns. for outdoor application partic. masonry - comprise chemically drying resin binder in solvent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7921112A FR2463167A1 (en) | 1979-08-14 | 1979-08-14 | Coating compsns. for outdoor application partic. masonry - comprise chemically drying resin binder in solvent |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2463167A1 true FR2463167A1 (en) | 1981-02-20 |
Family
ID=9228986
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7921112A Withdrawn FR2463167A1 (en) | 1979-08-14 | 1979-08-14 | Coating compsns. for outdoor application partic. masonry - comprise chemically drying resin binder in solvent |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2463167A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2601027A1 (en) * | 1986-02-11 | 1988-01-08 | Gosselin Claude | PROTECTIVE COATING HAVING EXTERNAL ANTI-ADHERENT FACE AND METHOD OF MANUFACTURING THE SAME |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB950298A (en) * | 1959-10-16 | 1964-02-26 | Shell Int Research | Improvements in or relating to polyepoxide compositions and their use |
US3143517A (en) * | 1953-08-07 | 1964-08-04 | Monsanto Co | Substantially non-porous polyurethane plastic and method for producing same |
FR1531713A (en) * | 1967-05-26 | 1968-07-05 | P B U Progil Bayer Ugine | New polyurethane-based coatings |
FR1558051A (en) * | 1967-03-10 | 1969-02-21 | ||
US3440224A (en) * | 1966-03-15 | 1969-04-22 | Ashland Oil Inc | Polyurethane compositions and methods for preparing such |
US3678004A (en) * | 1970-01-07 | 1972-07-18 | Scm Corp | Acid-stabilized epoxide resin coating compositions and method of preparing same |
FR2117093A5 (en) * | 1970-12-04 | 1972-07-21 | Marles Kuhlmann Wyandotte |
-
1979
- 1979-08-14 FR FR7921112A patent/FR2463167A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3143517A (en) * | 1953-08-07 | 1964-08-04 | Monsanto Co | Substantially non-porous polyurethane plastic and method for producing same |
GB950298A (en) * | 1959-10-16 | 1964-02-26 | Shell Int Research | Improvements in or relating to polyepoxide compositions and their use |
US3440224A (en) * | 1966-03-15 | 1969-04-22 | Ashland Oil Inc | Polyurethane compositions and methods for preparing such |
FR1558051A (en) * | 1967-03-10 | 1969-02-21 | ||
FR1531713A (en) * | 1967-05-26 | 1968-07-05 | P B U Progil Bayer Ugine | New polyurethane-based coatings |
US3678004A (en) * | 1970-01-07 | 1972-07-18 | Scm Corp | Acid-stabilized epoxide resin coating compositions and method of preparing same |
FR2117093A5 (en) * | 1970-12-04 | 1972-07-21 | Marles Kuhlmann Wyandotte |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2601027A1 (en) * | 1986-02-11 | 1988-01-08 | Gosselin Claude | PROTECTIVE COATING HAVING EXTERNAL ANTI-ADHERENT FACE AND METHOD OF MANUFACTURING THE SAME |
US4758622A (en) * | 1986-02-11 | 1988-07-19 | Claude Gosselin | Protective coating having non-stick surface, its process of manufacture, and an article coated therewith |
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ST | Notification of lapse |