EP3759178A1 - Compositions de revêtement à liaison polymère stables au stockage - Google Patents

Compositions de revêtement à liaison polymère stables au stockage

Info

Publication number
EP3759178A1
EP3759178A1 EP19707327.3A EP19707327A EP3759178A1 EP 3759178 A1 EP3759178 A1 EP 3759178A1 EP 19707327 A EP19707327 A EP 19707327A EP 3759178 A1 EP3759178 A1 EP 3759178A1
Authority
EP
European Patent Office
Prior art keywords
weight
days
composition according
silicate
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.)
Pending
Application number
EP19707327.3A
Other languages
German (de)
English (en)
Inventor
Michael Troll
Jack VAN LEUUWEN
Gerald Burgeth
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.)
Sto SE and Co KGaA
Original Assignee
Sto SE and Co KGaA
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
Application filed by Sto SE and Co KGaA filed Critical Sto SE and Co KGaA
Publication of EP3759178A1 publication Critical patent/EP3759178A1/fr
Pending legal-status Critical Current

Links

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
    • 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
    • C09D5/022—Emulsions, e.g. oil in 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
    • 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
    • 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
    • C09D5/025—Preservatives, e.g. antimicrobial agents
    • 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
    • C09D5/028—Pigments; Filters
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/15—Heterocyclic compounds having oxygen in the ring

Definitions

  • the invention relates to storage-stable polymer-bound compositions for forming coatings on structures and the like, comprising at least one organic binder, at least one filler and / or pigment, water for adjusting a pasty consistency of the composition, a buffer system comprising at least one basic silicate, at least a substance which retards the condensation of the basic silicate, and optionally conventional additives.
  • compositions of the type according to the invention are hydrous, pasty
  • Infestation is effectively prevented.
  • the aim is a pH of at least 10, since at lower pH values of the microbial infestation can not be prevented with sufficient certainty.
  • Water glass for example, according to EP1297079 Al or EP 2905268 Al, the disclosures of which are hereby incorporated by reference into this specification.
  • Water glass-containing coatings as described in the documents EP 1297079 Al or EP 2905268 Al, basically include such suitable buffer systems. However, they have significant disadvantages in the application to critical
  • Staining if the substrate is not "homogenized” by pretreatment is the neutralization and hardening of alkaline substrates by applying a fluat, a salt of hexafluorosilicic acid (fluorosilicates).
  • polymer-bound old coatings also leads to adhesion problems, if the substrate is not pretreated accordingly. The silicification with the ground can not take place.
  • compositions to be compatible and may their
  • coating compositions should be as easy to process as comparable conventional dispersion silicate paints or dispersion paints.
  • composition is considered to be stable in storage for the purposes of the invention if its pH does not change by more than 1 during storage under normal conditions for at least 30 days.
  • Base silicates in the sense of the invention are silicates which on contact with H 2 O due to the presence on the surface of the silicates of at least one
  • the "basic silicates” include basic alkali and alkaline earth silicates.
  • Metasilicate - groups or ions
  • Basic silicates tend to condensation reactions such as the formation of agglomerates or silicification.
  • a coating, composition, paint, plaster and the like in the sense of the invention means both the not yet processed product and the product after its processing.
  • Coating thus includes the water-containing liquid or pasty
  • composition before their application as well as the solid, more or less dry coating that results from the application.
  • the invention therefore relates to coating compositions, especially
  • Dispersion coatings and emulsion paints comprising at least one basic silicate, at least one filler and / or pigment, at least one substance which retards the condensation of the basic silicate, water for setting a pasty consistency, at least one organic binder and optionally conventional additives.
  • the basic silicate according to the invention in preferred embodiments of the invention is a basic alkaline earth silicate, in particular calcium silicate, and / or an alkali metal silicate, for example lithium, sodium or potassium water glass.
  • Especially preferred embodiments of the invention contain both alkaline earth silicate and alkali silicate.
  • alkaline earth silicate in particular calcium silicate-containing substances such as cement, cement clinker, granulated blastfurnace slag and / or hydraulic lime. Because of their availability, Portland cement and white cement are particularly preferred.
  • Hydrate-free calcium silicates are components of cement clinker or of cement.
  • cement clinker cement
  • cement cement
  • cement cement
  • cement cement
  • cement cement
  • cement cement
  • cement cement
  • cement cement
  • cement the fired component of the cement, which is responsible for setting and curing with the addition of water, and the carrier of the basic silicates.
  • the clinker (Portland cement clinker) consists mainly of the following phases: Tricalcium silicate (alite), short mixed C3S (3 CaO * S1O2)
  • Calcium silicate hydrate can be simplified as follows:
  • the calcium silicate phases because they cause the strong increase in pH when mixed with water.
  • the aluminate phases as well as the CaO are less of interest because they do not react as strongly basic as the hydrate-free silicates. That Cement and clinker with a particularly high content of basic silicates (more C2S phases than C3S phases) are of great importance, since this basic silicate contributes significantly more to the increase in pH than CaO. It is the stronger base.
  • the proportion of SiO 2 must not be too high and should be less than 50%, better less than 40%, better still less than 30%. Otherwise, the cement condenses too fast and is difficult to delay. Therefore, not only cement and clinker can serve as a source for the calcium silicate phases, but also slag sands, which are usually from about 30-45% CaO, 30-45% SiO 2, 5-15% A1203, 4-17% MgO , 0.5-1% S and traces of other elements.
  • blastfurnace slag Due to the high proportion of SiO2, blastfurnace slag is very well suited, but above all due to the fact that blastfurnace slag is a latently hydraulic binder. Latent means that blastfurnace slag is relatively slow to react and does not set quickly. Since the basic silicate is not used as a binder and setting this hydraulic additive is not desirable, the blast furnace slag is very well suited. But it is much more expensive than cement / cement clinker.
  • alkali silicates Li, Na, K water glass, silica sols
  • hydrate-free alkali metal silicates solid
  • Water glass are used.
  • Waterglass (alkali silicate) -containing coating compositions have only a relatively short "open time” especially when applied to strongly basic (cement or lime-containing) substrates.
  • the silicification which is a condensation reaction, to the subsurface takes place very rapidly. It has been known for a very long time that water glass (alkali silicates) on cement (containing alkaline earth silicates) act as an accelerator and vice versa. The setting of the cement or the silicification of the water glass takes place in this combination immediately and quickly. That may also be the reason that
  • the application is difficult. It comes u.a. to a "burning" of the paint and to a non-homogenous application of the paint.
  • Pre-treatment (priming and / or fluating) is "homogenized”.
  • alkaline earth silicates alone (ie of aqueous paints containing cement) is also not known. Again, the setting process of the cement would start immediately and thicken the composition in the pot.
  • inventive compositions in the way. This is true even though the amount of basic silicates needed for buffering is much lower than that required for a structural function of the silicate. Even at the low levels, which are sufficient as a buffer system, condensation or setting of the basic silicate would lead to a disruption of the consistency.
  • the composition may not be solid, but too thick.
  • the amounts of basic silicates used are low. A function as a binder is thus excluded. They act only as a pH-increasing additive and as a basic buffer.
  • the contents of the buffer system are such that they are suitable for
  • Composition is sufficient for at least 30 days, preferably 60 days, more preferably 90 days, even more preferably 180 days, especially preferably 360 days and even more preferably 720 days.
  • the basic silicate comprises both alkaline earth and alkali silicate.
  • the content of basic silicate in preferred embodiments is at most 2% by weight, preferably at least 0.01% by weight, more preferably between 0.01 and 1% by weight, most preferably between 0.01 and 0.5% by weight, based on the
  • the setting or silicification (condensation) of the basic silicate retarding substance is in preferred embodiments, a water-soluble carbohydrate, which is preferably selected from saccharides such as especially mono-, di- and oligosaccharides, especially from sugars, amino sugars and
  • Hydroxycarboxylic acids such as in particular sugar acids and their salts and derivatives can be used.
  • Polysaccharides, such as starch, as well as other carbohydrates used as thickeners in the prior art are known for their poor solubility
  • Preferred embodiments of the invention have a content of at most 1.0% by weight, preferably at least 0.001% by weight, more preferably between 0.005 % By weight and 0.5% by weight, more preferably between 0.005% by weight and 0.1% by weight and most preferably between 0.01% by weight and 0.08% by weight of at least one water-soluble carbohydrate on the total weight of
  • Preferred embodiments of the invention have a content of at least one organic binder between 1% by weight and 40% by weight, preferably between 2% by weight and 30% by weight, particularly preferably between 2.5% by weight and 25% by weight, each calculated as a solid.
  • compositions according to the invention have a content of at least one filler and / or pigment between 10% by weight and 90% by weight, preferably between 20% by weight and 85% by weight, particularly preferably between 25% by weight and 80% by weight .%. exhibit.
  • the water content of the compositions is preferably between 5% by weight and 50% by weight.
  • the at least one organic binder is preferably selected from the group consisting of homopolymers, copolymers or terpolymers of acrylic acid and / or methacrylic acid, itaconic acid and acid esters such as ethyl acrylate,
  • butyl acrylate Styrene, substituted or unsubstituted vinyl chloride, vinyl acetate, vinyl propionate, ethylene, butadiene, versatate, acrylamides and acrylonitrile;
  • water-dilutable alkyd polymers combinations of (meth) acrylic / alkyd polymers, polyvinyl alcohol and mixtures thereof, preference being given to homopolymers or copolymers of acrylic acid and / or methacrylic acid.
  • silicone resins and polysiloxanes can also be used as binders.
  • the at least one filler or pigment is preferably selected from the group consisting of pyrogenically precipitated silica, precipitated silica, silicon-aluminum mixed oxides, alkaline earth carbonates such as calcium carbonate, silicon dioxide, silicates, eg aluminosilicates, sulfates, eg barium sulfates, titanium dioxide, colored pigments, eg
  • compositions of the invention have a content of at least one additive such as a rheology additive, a
  • compositions of the invention can be used with advantage to a plaster, a color, in particular a dispersion paint, a decorative
  • compositions of the invention have a pH of at least 10.5, preferably at least 11, over at least 30 days, preferably at least 60 days, more preferably 90 days, even more preferably 180 days, especially preferably 360 days and even more preferably 720 days.
  • Embodiment 1 Emulsion paint:
  • Aqueous polymer dispersion (about 50% solids content) 30 parts by weight
  • Additives in particular rheology additives, water repellents, defoamers,
  • the pH of this dye batch was 11.6; even after 16 weeks at 11.7.
  • Embodiment 2 Dispersion Silicate Paint:
  • Aqueous polymer dispersion (about 50% solids content) 8 parts by weight of fillers and pigments 54 parts by weight of basic silicates 1, 5 parts by weight of sugar 0.05 part by weight
  • Additives in particular rheology additives, fly-dabbing agents, defoamers,
  • Film-forming aids, fibers, dispersants, etc. 4 parts by weight
  • compositions of the embodiments proved to be storage stable.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention concerne une composition de revêtement stable au stockage destinée à former des revêtements sur des bâtiments et analogues, contenant au moins un liant organique, au moins une matière de charge et/ou un pigment, de l'eau pour donner à la composition une consistance pâteuse, un système tampon qui contient au moins un silicate basique, au moins une substance qui ralentit la condensation du silicate basique, et d'éventuels additifs usuels.
EP19707327.3A 2018-03-14 2019-02-19 Compositions de revêtement à liaison polymère stables au stockage Pending EP3759178A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862642852P 2018-03-14 2018-03-14
PCT/EP2019/054077 WO2019174872A1 (fr) 2018-03-14 2019-02-19 Compositions de revêtement à liaison polymère stables au stockage

Publications (1)

Publication Number Publication Date
EP3759178A1 true EP3759178A1 (fr) 2021-01-06

Family

ID=65529678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19707327.3A Pending EP3759178A1 (fr) 2018-03-14 2019-02-19 Compositions de revêtement à liaison polymère stables au stockage

Country Status (3)

Country Link
US (1) US20190284399A1 (fr)
EP (1) EP3759178A1 (fr)
WO (1) WO2019174872A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10001831A1 (de) * 2000-01-18 2001-08-16 Keimfarben Gmbh & Co Kg Silikatische Beschichtungsmasse mit verbesserter Stabilität
DE10066302A1 (de) 2000-06-21 2002-01-17 Murjahn Amphibolin Werke Konservierungsmittelfreie dispersionsfarbe
WO2005092990A1 (fr) * 2004-03-29 2005-10-06 Robert Frederick Barber Compositions de revetement a base de saccharide
DE102004023374A1 (de) * 2004-05-12 2005-12-08 Celanese Emulsions Gmbh Konservierungsmittelfreie Beschichtungsmittel, Verfahren zu deren Herstellung und deren Verwendung
EP1753831B1 (fr) * 2004-06-04 2008-12-17 Sto Ag Composition de revetement
EP2905268B1 (fr) 2011-11-02 2018-01-03 Daw Se Composition destinée au traitement de zones emplâtrées, de zones dont le plâtre est retiré ou de zones plâtrées et son utilisation pour le traitement de telles zones
DE102016207877A1 (de) * 2016-05-09 2017-11-09 Clariant International Ltd Stabilisatoren für Silikatfarben

Also Published As

Publication number Publication date
US20190284399A1 (en) 2019-09-19
WO2019174872A1 (fr) 2019-09-19

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