EP4680680A1 - Composition de liant - Google Patents

Composition de liant

Info

Publication number
EP4680680A1
EP4680680A1 EP24712283.1A EP24712283A EP4680680A1 EP 4680680 A1 EP4680680 A1 EP 4680680A1 EP 24712283 A EP24712283 A EP 24712283A EP 4680680 A1 EP4680680 A1 EP 4680680A1
Authority
EP
European Patent Office
Prior art keywords
weight
binder composition
dry powder
protein
powder binder
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
EP24712283.1A
Other languages
German (de)
English (en)
Inventor
Stuart Ross Rhind HARLING
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP4680680A1 publication Critical patent/EP4680680A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • 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
    • 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
    • C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
    • 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
    • C08K5/54—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
    • C08K5/54—Silicon-containing compounds
    • C08K5/5406—Silicon-containing compounds containing elements other than oxygen or nitrogen
    • 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
    • C08K5/54—Silicon-containing compounds
    • C08K5/541—Silicon-containing compounds containing oxygen
    • C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
    • 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
    • C09D101/00—Coating compositions based on cellulose, modified cellulose, or cellulose derivatives
    • C09D101/08—Cellulose derivatives
    • C09D101/26—Cellulose ethers
    • C09D101/28—Alkyl ethers
    • C09D101/286—Alkyl ethers substituted with acid radicals
    • 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
    • C09D103/00—Coating compositions based on starch, amylose or amylopectin or on their derivatives or degradation products
    • C09D103/02—Starch; Degradation products thereof, e.g. dextrin
    • 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
    • C09D189/00—Coating compositions based on proteins; Coating compositions based on derivatives thereof
    • C09D189/005—Casein
    • 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
    • C09D5/03—Powdery paints
    • C09D5/033—Powdery paints 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
    • C09D5/03—Powdery paints
    • C09D5/033—Powdery paints characterised by the additives
    • C09D5/036—Stabilisers
    • 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
    • C09D7/48—Stabilisers against degradation by oxygen, light or heat
    • 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
    • C09D7/80—Processes for incorporating ingredients
    • 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
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/262—Alkali metal carbonates

Definitions

  • the present invention relates to dry powder binder compositions, in particular to dry powder binder compositions which are of use to form binder compositions for coatings such as paints, glazes and other materials for building decoration and renovation.
  • the present invention also relates to a method for preparing the dry powder binder compositions from sustainable materials, and to compositions such as paint compositions containing the dry powder binder compositions.
  • paints are manufactured in liquid form to a pre-determined finish and texture.
  • These paints comprise a binder (a 'glue-like' material), fillers, pigment and various solvents which are subsequently packaged for customers within a metal or plastic container.
  • the ingredients of such paints typically include a number of materials derived from petrochemicals and other high-carbon sources, many of which are considered hazardous to the environment and/or human life.
  • the principal ingredients comprise petroleum and synthetic chemicals and solvents that are combined with bactericides, surfactants and other additives. The presence of such materials has been linked to a range of serious pathological conditions and emissions, known as “offgassing” can continue without noticeable signs for a considerable period after the product has been applied.
  • VOCs volatile organic chemicals
  • liquid paint is typically blended from a sequential combination of all ingredients in a large tank (500+ litres) and manufactured through a cutting process known as high-shear liquid dispersion which can take up to 12 hours or more, using significant amounts of energy.
  • high-shear liquid dispersion which can take up to 12 hours or more, using significant amounts of energy.
  • the resulting liquid paint is heavy and costly to store and transport, with associated undesirable vehicle emissions.
  • Conventional paints are often packaged in single use plastic pots which are undesirable from an environmental and sustainability perspective, and leftover paint itself can be difficult to dispose of safely, with environmental landfill regulations now increasingly restricting the disposal of liquid paints and their containers by both professional painters and householders.
  • Conventional paint can contain solvents, bactericides and other ingredients which are harmful to aquatic organisms, if inadvertently (or intentionally) released into waterways.
  • Dry powder paints which are mixed with a water or another liquid to form a liquid paint at the time of use, are an attractive alternative to conventional liquid paints, being easy to transport and store thereby overcoming a number of the problems outlined above associated with conventional liquid paints.
  • dry-powder paints have certain drawbacks which have prevented their becoming a practical alternative to conventional ready-to-use liquid paint including:
  • - formulations may require a period of time between mixing and using the paint to allow it to thicken, making their use unattractive compared to the convenience of ready-to-use liquid paint;
  • a critical ingredient of both conventional liquid paints and dry-powder paints (and coatings generally) is the binder, which functions to hold the pigment and other components together and binds them to the surface being coated by forming a film.
  • the binder impacts the paint’s properties in use, such as flexibility and adhesion, and also many performance factors in the resulting coating film, such as durability, stain resistance and resistance to cracking. Depending on their viscosity, some binders require thinning before use, while others can be used without dilution.
  • a natural binder is oil, such as linseed oil.
  • Other binders often used in liquid paints are alkyds, which are synthetic polyester resins.
  • Liquid paints and coatings may contain additional volatile oils or organic solvents as diluents. When such a paint is applied to a surface, the solvent evaporates and the coating reacts with oxygen in the atmosphere over a period of time (which can be days, weeks or months) to create a cross linked network.
  • Emulsion paint uses synthetic polymer particles such as acrylic, vinyl acrylic (PVA) and styrene acrylic as binders.
  • the polymer particles are suspended in a waterbased dispersion.
  • the water and any other solvents evaporate and draw together and fuse the binder particles irreversibly forming a network structure.
  • Casein is a protein derived from milk and when mixed in water with lime and pigment will form a paint.
  • egg tempera Another example is egg tempera, where egg yolk protein is mixed with water and pigment to form a fast-drying paint.
  • paints incorporating organic molecules such as proteins will tend to spoil quickly, becoming unusable within hours or even minutes, and therefore have to be prepared at the time of use i.e., the “pot life” of the prepared paint is short. Preparing such paints can require a considerable degree of skill because insufficient mixing can lead to agglomeration of the protein particles producing a porridge-like and grainy texture.
  • a blotchy and inconsistent colour finish can also result from insufficient combination of the binder with the pigment material.
  • the mixing of such paints can also produce excessive foaming, resulting in a mousse-like consistency that cannot be applied satisfactorily with normal tools. Preparing such a protein-based paint may therefore be beyond the skill set of a typical consumer. Additional problems can occur when applying such paints over previous coats of conventional acrylic, or other petrochemical paints, leading to cracking and flaking or rejection of the paint entirely.
  • the finish of the paint is often limited to a flat matt appearance, which can be loose and rub off easily. The finish can be improved by adding further synthetic ingredients, but this negates many of the benefits of using natural sustainable products.
  • GB2443026A (Stuart Ross Rhind Harling) discloses paint binder compositions containing a blend of casein protein, soy lecithin, dextrin and cellulose fibres.
  • GB2501079A (Stuart Ross Rhind Harling) discloses a method of forming a dry powder paint binder from milk or plant proteins and other natural materials, comprising a shearing operation to produce consistent, homogenous and uniform particles.
  • GB2501093A (Stuart Ross Rhind Harling) discloses a soluble dispersant composition for a powder paint, wherein the composition comprises sodium chloride, sodium carbonate, sodium phosphate and sucrose.
  • the paint is preferably a natural paint, such as one made from proteins derived from milk, eggs, rice or soy.
  • WO2013/153365A1 discloses a composition suitable for use as a paint binder comprising a) a protein; b) a polysaccharide; c) an emulsifier; and d) a thickening agent.
  • the composition in dry state has a homogenous particle size of less than about 100 pm.
  • WO2013/153366A1 discloses a water conditioning component suitable for use with or in a paint binder composition.
  • the water conditioning component comprises: a Group I metal halide; a Group I metal carbonate; a degreaser; and a glucose-containing component.
  • the paint binder composition can comprise a protein, a polysaccharide; and emulsifier; and a thickening ingredient.
  • a dry powder binder composition comprising:
  • a binder composition comprising:
  • a method for preparing a binder composition comprising the steps of: a) providing a dry powder binder composition as described herein; and b) mixing the dry powder binder composition of step a) with water.
  • Embodiments and preferences described below with respect to the dry powder binder composition apply equally to the binder composition containing water, to subsequent coating products containing the dry powder binder composition or binder composition, and to methods for preparing the dry powder binder composition, binder composition, and subsequent coatings.
  • Preparing a binder composition for use in a coating poses a set of unique challenges because of the many functions that the binder composition must fulfil. These have been outlined in the background of invention above, and include: forming a continuous and cohesive film which adheres well to all intended surfaces and substrates, fully embedding pigments and fillers, while providing a composition with an attractive consistency and brush feel in use.
  • brush feel refers to the sensation experienced when an applicator such as a brush or roller is loaded with a liquid coating such as a paint, and when the coating is applied to a surface.
  • a certain amount of “stickiness” is expected when a brush is loaded with paint which will impart the user with confidence that the paint will be easy to transfer from the container to the surface without excessive dripping or splashing, and will form a long lasting and durable coating.
  • the liquid coating must also feel smooth and flexible, to give confidence to the user that the coating will be easy to apply to the surface (no dragging) and will result in an attractive surface. The combination of these requirements is consciously and unconsciously assessed by the user when making first contact with the brush or other applicator, hence the term “brush feel”.
  • the present invention relates, inter alia, to a dry powder binder composition containing a specific combination of protein(s), a mixture of sodium salts, a mixture of starches, and dextrin. While a number of the individual ingredients have known utility in paints and coatings, the novel combination of ingredients provides an unexpectedly superior binder composition when the dry powder binder composition is mixed with water, as discussed in detail below and as demonstrated in the Examples. Surprisingly, the mixture of sodium salts, mixture of starches and dextrin is able to form stable and effective dry powder binder compositions with a range of proteins including casein, pea protein, soy protein, rice protein, hemp protein, potato protein, spirula protein (blue-green algae) and fungi protein. The combination of advantageous features demonstrated in the Examples is obtained by the specific combination of ingredients in the dry powder binder composition of the invention.
  • a “dry powder binder composition” refers to the mixture of the dry powder binder composition and water.
  • a binder composition may be mixed with further ingredients to form a coating e.g. the binder composition can be mixed with one or more pigments and/or fillers to form a paint or other coating.
  • the dry powder binder composition may also contain pigment and fillers in dry powder form, such that when it is mixed with water, a paint or other coating ready for application is immediately formed i.e. the dry powder binder composition when mixed with water forms a coating in its own right.
  • a dry powder binder composition may also be referred to herein as a “dry powder coating composition”.
  • the dry powder binder composition of the invention comprises a protein, which provides functional film-forming properties to the binder composition and resulting coatings.
  • Proteins that are particularly suitable for use are phosphoproteins, which are prevalent in animal and vegetation kingdoms.
  • the protein has molecular weight of at least 20 kDa.
  • the protein is selected from the group consisting of an animal or animal- derived protein, a plant protein, an algal protein and a fungi protein, and mixtures thereof.
  • the protein is an animal protein, an animal-derived protein or a plant protein, or a mixture thereof.
  • Suitable animal and animal derived-proteins include those deriving from milk, eggs, bone and collagen products.
  • the protein is selected from the group consisting of casein, egg white and egg yolk. Mixtures thereof are also contemplated.
  • the protein is casein.
  • the casein can be in neutral or salt form, e.g. sodium caseinate.
  • the protein is a mixture of casein and sodium caseinate.
  • Suitable plant proteins include legume protein, grain protein, seed protein, nut protein, potato protein, and buckwheat protein. Mixtures thereof are also contemplated.
  • the protein is a legume protein selected from the group consisting of fava bean protein, pea protein (such as yellow pea protein), soya protein, haricot bean protein, black eyed bean protein, lentil protein and mung bean protein; and mixtures thereof.
  • the protein is a grain protein selected from the group consisting of rice protein, oat protein, barley protein, rye protein, maize (corn) protein and hemp protein; and mixtures thereof.
  • the protein is a seed protein.
  • the protein is a nut protein.
  • the protein is potato protein.
  • the protein is buckwheat protein.
  • Suitable algal proteins include spirula (blue-green algae) protein.
  • the protein is selected from the group consisting of casein, rice protein, soy protein, pea protein, hemp protein, potato protein, fungi protein and spirula protein.
  • the protein is selected from the group consisting of casein, rice protein, soy protein, pea protein and potato protein.
  • the protein is suitably present in the dry powder composition (or total protein if a mixture of proteins is used) in an amount between about 20% and about 70% by weight, for example between about 30% and about 70% by weight, between about 40% and about 60% by weight, between about 30% and about 50% by weight, about 40% by weight, about 45% by weight, about 50% by weight or about 55 % by weight. As used herein, all percentages by weight are based on the total weight of the dry powder binder composition.
  • the dry powder binder composition of the invention is mixed with water to form the binder composition.
  • proteins can be insoluble in water.
  • casein has an isoelectric point of 4.6, therefore has very low solubility in pure water, which typically has pH of about 7 at 25 °C.
  • a binder composition therefore requires an alkaline activator to raise the pH and solubilise the protein.
  • the sodium carbonate can act as a water conditioning component which allows the dry powder binder composition to be mixed with water of varying hardness and pH.
  • the present inventor has also discovered that the sodium carbonate can stimulate polymerisation and gelatinisation of the mixture of starches in the binder composition.
  • the sodium carbonate is present in the dry powder binder composition in an amount between about 5% and about 35% by weight, for example between about 5% and about 30% by weight, between about 5% and about 20% by weight, between about 10% and about 30% by weight, between about 5% and about 15% by weight, between about 7.5% and about 12.5% by weight, between about 15% and about 25% by weight, between about 8% and about 12% by weight, about 10 % by weight or about 20% by weight.
  • the dry powder binder composition of the invention also contains sodium carboxymethyl cellulose.
  • Carboxymethyl cellulose is a cellulose derivative with carboxymethyl groups (- CH2CO2H) bound to a number of the hydroxyl groups of the glucopyranose monomers that make up the cellulose backbone.
  • the sodium salt of carboxymethyl cellulose is illustrated below:
  • cellulosic compounds in binder compositions as a thickening agent, rheology modifier and stabilizer. It can also reduce flocculation.
  • Sodium carboxymethylcellulose is commercially available with varying average molecular weight e.g. about 90,000 Da, about 250,000 Da, and about 700,000 Da, with varying degrees of substitution. All are expected to provide the beneficial effects demonstrated in the Examples.
  • the sodium carboxymethylcellulose is present in the dry powder binder composition in an amount between about 0.5% and about 15% by weight, for example between about 0.5% and about 10% by weight, between about 0.5% and about 6.5% by weight, between about 2% and about 5% by weight, between about 2.5% and about 4.5% by weight, between about 5% and about 10% by weight, about 3.5 % by weight, about 5% by weight or about 7.5% by weight.
  • the dry powder binder composition of the invention also contains sodium metasilicate, which may be used in the form of a hydrate e.g. sodium metasilicate pentahydrate which has the formula Na2SiO3.5H 2 O (which may also be formulated as Na2SiO2(OH) 2 .4H 2 O), or in anhydrous form.
  • sodium metasilicate acts as a surfactant in the binder composition of the invention, and helps to confer corrosion resistance and waterproofing properties on coatings incorporating the binder composition of the invention.
  • the sodium metasilicate is present in the dry powder binder composition in an amount between about 0.5% and about 15% by weight, for example between about 0.5% and about 10% by weight, between about 0.5% and about 7% by weight, between about 1% and about 6% by weight, between about 3% and about 5% by weight, between about 5% and about 10% by weight, about 4 % by weight, about 5% by weight or about 7.5% by weight.
  • the dry powder binder composition of the invention also contains sodium gluconate, a compound with formula NaCsHnO? and the following structure:
  • sodium gluconate acts as a stabilising and chelating agent in binder compositions of the invention.
  • sodium gluconate will complex with calcium and other cations often found in hard water, keeping them in suspension, while still providing a resulting composition with suitable texture and brush feel.
  • sodium gluconate when sodium gluconate is used in the dry powder binder compositions of the invention, they can be used with water from different geographical locations having differing hardness and pH.
  • Previous dry powder binder compositions have used CalgonTM (sodium hexametaphosphate) for this purpose.
  • the present inventor has also found that the sodium gluconate has a particular impact on dry powder compositions containing casein, as it prevents the gradual formation of hard, gritty calcium lactate crystals which can show up in the finished coating (in particular, paint).
  • the sodium gluconate is present in the dry powder binder composition in an amount between about 0.5% and about 10% by weight, for example between about 0.5% and about 7% by weight, between about 1% and about 6% by weight, or between about 3% and about 5% by weight, such as about 4 % by weight.
  • the dry powder binder composition of the invention also contains sodium metabisulfite, a compound with formula NaS 2 O 5 and the following structure:
  • the present inventor has discovered that sodium metabisulfite helps to confer anti-mildew, anti-oxidant and preservative properties on coatings incorporating binder compositions of the invention.
  • the sodium metabisulphite is present in the dry powder binder composition in an amount between about 0.5% and about 15% by weight, for example between about 0.5% and about 10% by weight, between about 0.5% and about 7% by weight, between about 1% and about 6% by weight, between about 3% and about 5% by weight, between about 5% and about 10% by weight, about 4 % by weight, about 5% by weight or about 7.5 % by weight.
  • Example 1 of the eleven sodium salts tested, only the mixture of sodium carboxymethylcellulose, sodium metasilicate, sodium gluconate, sodium metabisulphite and sodium carbonate provided a binder composition with optimal properties.
  • the mixture of sodium salts is suitably present in the dry powder binder composition in a total amount between about 5% and about 60% by weight, for example between about 5% and about 50% by weight, between about 5% and about 45% by weight, between about 15% and about 35% by weight, between about 20% and about 30% by weight, between about 15% and about 50% by weight, between about 20% and about 50% by weight, between about 25% and about 50% by weight, about 25 % by weight, about 40% by weight, or about 45% by weight.
  • the protein is a sodium salt such as sodium caseinate
  • the sodium caseinate is not considered to be part of the defined mixture of sodium salts.
  • the dry powder binder composition comprises a mixture of sodium salts consisting of sodium carboxymethylcellulose, sodium metasilicate, sodium gluconate, sodium metabisulphite and sodium carbonate, i.e. no other sodium salts are present in the dry powder binder composition.
  • the dry powder binder composition comprises a mixture of sodium salts consisting of sodium carboxymethylcellulose, sodium metasilicate, sodium gluconate, sodium metabisulphite and sodium carbonate, and the composition further contains sodium caseinate, but no further sodium salts are present in the dry powder composition.
  • the binder composition of the invention does not contain sodium chloride. In one embodiment, the binder composition of the invention does not contain sodium phosphate.
  • the binder composition of the present invention also comprises a specific mixture of starches.
  • Starches are polymeric carbohydrates consisting of numerous glucose units joined by a- (1— >4)-D glycosidic bonds. Starch occurs widely in plant tissue and is most commonly obtained from cereals and potatoes.
  • the present inventor has discovered that a mixture of starches comprising corn starch, cassava starch and rice starch can impart suitable or enhanced properties when included in a binder composition. When contacted with water, starch will swell, and will provide body and texture to a coating such as a paint, giving a pleasing brush feel.
  • Example 2 of the six starches tested, only the mixture of corn starch, cassava starch and rice starch provided a binder composition with optimal properties.
  • the presently claimed mixture of starches provided binder compositions with suitable thickness and brush feel immediately following mixing of the dry powder binder composition with water, whereas with typical dry powder binder mixers it is usual to have to wait at least 20 minutes for the composition to thicken sufficiently.
  • Corn starch (also known as maize starch or cornflour) is the starch derived from corn (maize) grain. The present inventor has found that corn starch advantageously increases the viscosity and gelatinisation of the binder composition of the invention.
  • the corn starch is present in the dry powder binder composition in an amount between about 0.5% and about 10% by weight, for example between about 0.5% and about 7% by weight, between about 1% and about 6% by weight, or between about 3% and about 5% by weight, such as about 4 % by weight.
  • Cassava starch is the starch derived from cassava, and is also known as tapioca. The present inventor has found that cassava starch binds and reduces water loss in binder compositions of the invention and coatings incorporating compositions of the invention, and also improves shear resistance of coatings incorporating compositions of the invention.
  • the cassava starch is present in the dry powder binder composition in an amount between about 0.5% and about 8% by weight, for example between about 0.5% and about 4.5% by weight, between about 1% and about 4% by weight, between about 1 .5% and about 3.5% by weight, between about 2% and about 3% by weight, between about 0.5% and about 3% by weight, about 1% by weight, about 1 .5% by weight, about 2% by weight or about 2.5 % by weight.
  • Rice starch is the starch derived from rice.
  • the present inventor has found that the high amylose content of rice starch imparts an attractive degree of glossiness to coatings incorporating binder compositions of the invention.
  • the rice starch is present in the dry powder binder composition in an amount between about 0.5% and about 8% by weight, for example between about 0.5% and about 4.5% by weight, between about 1% and about 4% by weight, or between about 1 .5% and about 3.5% by weight, or between about 2% and about 3% by weight, between about 0.5% and about 3% by weight, about 1% by weight, about 1 .5% by weight, about 2% by weight or about 2.5 % by weight.
  • the mixture of starches is present in the dry powder binder composition in a total amount between about 3% and about 20% by weight, for example between about 3% and about 15% by weight, between about 6% and about 12% by weight, between about 2% and about 10% by weight, about 6% by weight or about 9% by weight.
  • Dextrins are low molecular weight carbohydrates formed from the hydrolysis of starch.
  • the starch can be hydrolysed using enzymes, or by applying dry heat under acidic conditions.
  • Dextrins are mixtures of polymers of D-glucose units linked by a-(1— >4) or a-(1— >6) glycosidic bonds, and have the following structure:
  • the present inventor has discovered that the addition of dextrin to the dry powder paint composition provides further improvements to coatings incorporating the binding composition of the invention, as the dextrin acts as a binding agent to increase adherence of the pigment component. It reduces rubbing off of the paint prior to curing, and also migrates to the coating surface forming a hard skin which is more resistant to water when dry and cured.
  • the dextrin is dextrin from corn.
  • the dextrin is dextrin from maize starch.
  • the dextrin is dextrin from potato starch.
  • the dextrin is from corn.
  • the dextrin is present in the dry powder binder composition in an amount between about 0.5% and about 10% by weight, for example between about 0.5% and about 8% by weight, between about 0.5% and about 4.5% by weight, between about 1% and about 4% by weight, between about 1 .5% and about 3.5% by weight, between about 2% and about 3% by weight, between about 2% and about 8% by weight, about 2.5 % by weight, about 4% by weight or about 5% by weight.
  • All of the protein, sodium salts, starches and dextrins of use in the dry powder binder composition of the invention are suitably sustainably produced.
  • the protein, mixture of salts, mixture of starches and dextrin are suitably all individually included in the composition in the form of dry powders and/or dry particles.
  • the particle size distribution of the dry powder binder composition is suitably such that the D50 value is less than about 100 pm, such as less than about 75 pm, less than about 50 pm or less than about 30 pm.
  • the dry powder binder composition has a D50 value of between about 20 pm and about 50 pm, such as between about 20 pm and about 40 pm, between about 20 pm and about 30 pm.
  • Reference herein to D50 value is the median diameter: 50% by weight of the particles has a smaller diameter and 50% by weight of the particles has a larger diameter.
  • the particle size distribution can be measured by laser diffraction using a suitable particle size analyzer using compressed air to disperse the particles e.g. a Mastersizer instrument from Malvern Instruments.
  • the dry powder binder composition of the invention is added to water, or water is added to the dry powder binder composition, to form a binder composition in liquid form, or in the form of a dispersion.
  • a binder composition comprising: water; and a dry powder binder composition as described herein.
  • a method for preparing a binder composition comprising the steps of: a) providing a dry powder binder composition as described herein; and b) mixing the dry powder binder composition of step a) with water.
  • a binder composition obtainable by adding water to the dry powder binder composition described herein.
  • any suitable amount of water to obtain the desired viscosity/thickness of the resulting binder composition may be used.
  • the optimum amount of water may depend on the protein used, and can easily be determined by the skilled person. In one embodiment, for every 1 g of dry powder binder composition, between about 5 mL and about 20 mL of water is added, such as between about 5 mL and about 15 mL, between about 7.5 mL and about 12.5 L, or about 10 mL of water is added. These ratios hold true whatever the quantity of output is required.
  • the dry powder binder composition and water can be mixed by any suitable means, including by hand, by using a hand-held kitchen mixing appliance, or by using a paint mixer attachment on an electric drill.
  • 20 g of dry powder binder composition is mixed with 200 mL of water.
  • colourant e.g. > 1 g
  • the water is suitably tap water, which is typically used at a temperature which is suitable for hand washing.
  • the water in step b) is at a temperature of between about 30 °C and about 65 °C, such as between about 30 °C and about 60 °C, between about 40 °C and about 60 °C, between about 30 °C and about 40 °C, or between about 35 °C and about 45 °C.
  • Higher temperatures are to be avoided, as otherwise the protein and other heatsensitive components in composition could be damaged.
  • the binder composition has a pot life (which can also be referred to as a shelf life) of at least 2 days, such as at least 3 days, at least 4 days, at least 5 days, at least 6 days, at least 1 week, at least 10 days or at least 2 weeks.
  • dry powder binder compositions of the invention do not have an unpleasant odour (which is often a problem with protein-based coatings such as casein and other animal protein paints) and no mould, bacterial or yeast growth, or other degradation is observed over its pot life.
  • the dry powder binder composition of the invention may comprise one or more further components.
  • the dry powder binder composition as described hereinabove further comprising one or more components selected from the group consisting of:
  • Suitable plant derived gums include gum Arabic, gum xanthan, gum tragacanth and gum neem. Mixtures thereof are also contemplated.
  • the dry powder binder composition further comprises gum Arabic and/or gum xanthan and/or gum tragacanth.
  • the dry powder binder composition further comprises gum Arabic and gum tragacanth.
  • the dry powder binder composition further comprises gum Arabic and gum xanthan.
  • Suitable phospholipid emulsifiers include lecithins. Lecithin can be animal derived (such as from egg yolk) or plant derived, such as from soy bean, rapeseed, cottonseed or from sunflower oil. Mixture of phospholipid emulsifiers may be used.
  • Suitable monosaccharides include glucose, and suitable disaccharides include sucrose.
  • Fillers are included in coatings such as paint to add bulk, assist with coverage (hiding power) and add thickness to the coating layer.
  • Many different types of filler may be used, depending on the requirements of the resulting coating.
  • a mineral based filler is used e.g. magnesium silicate (talc).
  • talc magnesium silicate
  • Another suitable filler is a clay such as Montmorillonite clay e.g. bentonite.
  • Further suitable fillers include white minerals such as China clay (Kaolin - a hyperwhite form may be used for white paint), precipitated calcium carbonate, marble dust, dolomite, and Portland cement.
  • the nature of the filler can lend a particular ‘sheen’ to the finished coating (such as paint), and can provide a smoother coating.
  • Certain fillers such as Portland cement are particularly suitable for producing an outdoor ‘masonry’ paint. Mixtures of fillers may be used.
  • Colourants are defined as pigments if they are insoluble in the liquid to which they are added, or dyes if they are soluble in the liquid to which they are added. The nature of the colourant depends on the colour and desired coverage of the binder composition or resulting coating that is to be achieved, and mixture of colourants may be required to achieve the desired colour.
  • the colourant is non-toxic and non-hazardous.
  • the colourant is selected from the group consisting of an oxides, a dioxide, an ochre, an umber, a metal, a vegetable dye, a chlorophyll, an anthocyanin, a carotenoid and a betalain; and mixtures thereof.
  • the colourant titanium dioxide is used. If a white paint is desired, 100% titanium dioxide is used as colourant. For coloured paints the titanium dioxide % can be tapered down with an individual blend of coloured pigments for each colour. For very dark paints, the titanium dioxide content may only be 2-3%.
  • the dry powder binder composition of the present invention can be used to form various coatings including but not limited to paints, primers, varnishes, glazes, lazures and adhesives. When used to function as a primer, varnish, glaze or lazure, the dry powder binder composition will typically not contain a filler.
  • the dry powder binder composition of the invention is also of use in fillers e.g. wall filler.
  • a coating composition (such as a paint) comprising the dry powder binder composition described herein.
  • the coating composition (such as a paint composition) comprises the dry powder binder composition which has been pre-mixed with water.
  • the coating composition (such as a paint composition) can be prepared by mixing the binder composition (dry powder binder composition + water) with any required components typically including colourants and fillers. Additional solvents may also be added.
  • the dry powder binder composition can contain all of the ingredients required to make a coating (e.g. a paint), such that all is required is to add water to the dry powder binder composition and a coating (e.g. a paint) will be formed.
  • a coating composition (such as a paint) comprising a dry powder binder composition as described herein and water; and one or more components selected from the group consisting of:
  • a method for preparing a paint composition comprising the steps of: i) providing a dry powder binder composition as defined hereinabove; ii) mixing the dry powder binder composition of step i) with water; iii) adding to the mixture of step ii), one or more components selected from the group consisting of:
  • phospholipid emulsifier - a phospholipid emulsifier; and/or - a monosaccharide or a disaccharide; and/or
  • a method for preparing a coating composition comprising the steps of: i) providing a dry powder binder composition as defined hereinabove; ii) adding to the mixture of step i), one or more components selected from the group consisting of:
  • step iii) mixing the mixture of step ii) with water.
  • a method for preparing a coating composition comprising the steps of: i) providing a dry powder binder composition as defined hereinabove; ii) preparing a mixture of water and one or more components selected from the group consisting of:
  • step iii) mixing the dry powder binder composition of step i) with the mixture of step ii).
  • the total amount of additional components required will depend on the desired type of coating. For example, for a glaze or lazure the amount of, e.g. filler and colourant, will typically be lower than the amount used for an opaque paint.
  • For an opaque paint typically 25 g of dry powder binder composition is mixed with 50 g of a mineral-based filler/colourant blend. This mixture is then mixed with 200 mL of water to form 250 mL of opaque paint. These ratios hold true whatever the quantity of output is required.
  • additional components total amount, e.g. the total combined weight of mineral-based filler and colourant
  • total amount e.g. the total combined weight of mineral-based filler and colourant
  • binder compositions and coating compositions are applied to the surface of a substrate using any suitable means, e.g. brush or roller.
  • a substrate coated with a binder composition as described herein In a further aspect of the invention is provided a substrate coated with a paint composition as described herein.
  • the substrate can vary and includes walls (interior and exterior), ceilings, woodwork and fences.
  • coatings comprising the binder composition of the invention dry quickly, typically within 2 hours, and subsequent coatings can be applied after only 4 hours of drying time.
  • the re-coat time depending on ambient temperature and humidity, is around 24 hours, e.g. around 12 hours, around 8 hours, around 6 hours or around 4 hours.
  • binder compositions of the invention or coatings containing binder compositions of the invention
  • the coating absorbs carbon dioxide and other atmospheric acids.
  • This has potential environmental benefits by providing a carbon capture medium.
  • Additional components can be added to the dry powder binder composition which can be advantageous with respect to reducing climate pollution and improving the health of humans such as: hollow glass or ceramic spheres (to improve insulation properties), silver ions (to reduce contact transfer of bacteria and viruses), matrix minerals (to improve absorption of airborne pollutants such as formaldehyde) and photocatalytic pigments (of use in reducing nitrous oxide).
  • the claimed mixture of sodium salts and mixture of starches, and dextrin are all bio-based materials that will fully or partially degrade over time and are not toxic in the quantities used
  • the dry powder binder compositions of the inventions, and liquid binder compositions and coatings containing the dry powder binder compositions are expected to be fully or partially biodegradable with garden compost or kitchen waste, thereby avoiding waste landfill and water pollution.
  • the dry powder binder compositions are expected to remain stable and usable for up to 10 years.
  • the binder composition of the invention is, in at least in some embodiments, expected to have one or more of the following merits or advantages:
  • a metal disc (20 mm diameter) is placed on top of a sheet of blotting paper (50 mm diameter), and both are placed, centered together, on a calibrated digital scale which is tared to zero.
  • a sample of the composition is drawn into a 3 mL pipette and drops of the composition are placed onto the surface of the metal disc. Each drop of composition is counted, stopping at the drop which causes the meniscus of the liquid on the metal disc to break onto the blotting paper. The weight of the drops is also recorded. The test is repeated three times to provide an average for the number of drops (“cohesion drops”) and an average for the weight of the drops (“cohesion grams”).
  • a control composition containing only water is also tested. It is desirable for a composition to exhibit a cohesion level as close as possible to water, as this will provide optimum compatibility with other materials in the coating, with the substrate, and with itself when applied as a second coating.
  • the standard ISO 2409 is used, which is a test method for assessing the resistance of paint coatings to separation from substrates when a right-angle lattice pattern is cut into the dried coating, penetrating through to the substrate.
  • a calibrated stainless steel coating applicator set to 100 micron and a A5 paint test card secured to a flat hard surface.
  • a ribbon of about 2 mL of the liquid is drawn across the surface of a standard coated 400 gm black and white test card.
  • the test card is then left exposed to dry and harden for a period of 14 days.
  • an ISO2409 scratch blade is used to cut a cross hatch through the surface of the coating.
  • Viscosity is determined using a standard method using a calibrated Zahn 3 viscosity cup of 44 mL and a stopwatch accurate to 0.001 seconds.
  • the temperature of the binder composition being tested is maintained at 20 °C +/- 2 °C.
  • the Zahn cup is placed in the container containing the binder composition, well under the level of the liquid. Using the approved method, the cup is lifted and the stopwatch is started at the moment the edge of the cup breaks the surface of the liquid. The cup is held no more than 150 mm above the surface of the liquid and the watch is stopped at the point where there is a clean break in the liquid flowing from the hole in the base of the cup. The test is repeated three times to produce an average time reading, which is then converted to Centipoise.
  • the preferred viscosity of a binder to be combined with minerals and pigments in paints and coatings is known to be about 80 Centipoise, or about 100 Centipoise.
  • a sample of the binder composition drawn is down to 100 microns onto a flexible substrate secured to a glass plate, and allowed to dry for 48 hours.
  • the flexible substrate is then removed and bent around two cylinders of 100mm and 50mm diameters and examined under magnification to check for cracks and flaking.
  • Alkalinity test It is desirable to maintain a pH level of between about 8 and about 10 in liquid and paste decor products. This aids the stability of liquid products, extends shelf life, and helps to avoid mould, bacterial and yeast growth when exposed to air.
  • the pH level of each prepared binder composition is checked with a calibrated meter at the start of each series of tests and after 3 days.
  • Dry powder binder compositions are prepared by mixing the protein together with the mixture of sodium salts, mixture of starches, dextrin, and any other ingredients in the relative amounts given in the Examples below.
  • Dry powder binder composition is added to tap water at 30-60 °C and mixed in a high shear dispersion blender for 40 seconds.
  • the relative amounts of dry powder binder composition and water are given in the Examples below.
  • the resulting liquid/dispersion is poured into a clear container, covered and left to cool to room temperature (approximately 20 °C).
  • a standard blend for white emulsion paint for indoor walls and ceilings is prepared by mixing the following components in dry powder form:
  • the titanium dioxide % can be tapered down with an individual blend of coloured pigments for each colour.
  • the titanium dioxide content may only be 2-3%.
  • 250 g of dry powder binder composition is mixed with 500 g of dry powder paint pigment blend, to form 750 g of dry powder paint composition.
  • Corresponding liquid binder compositions were then prepared according to General Method B using 20 g of dry powder binder composition and 200 mL of tap water, and their properties evaluated using the cohesion test, adhesion test, viscosity test, flexibility test and alkalinity test, as set out in Evaluation Methods.
  • the “pot life” of the binder compositions was also assessed by evaluating the stability of the formulations after 48 hours.
  • a range of powdered sodium salts as additives were tested: sodium hydroxide, sodium carboxymethylcellulose, sodium bicarbonate, sodium chloride, sodium phosphate, sodium sesquicarbonate, sodium metasilicate, sodium metabisulphite, sodium gluconate, sodium hexametaphosphate and sodium carbonate. It was found that a mixture of sodium carboxymethylcellulose, sodium metasilicate, sodium gluconate, sodium metabisulphite and sodium carbonate provided optimal results.
  • a range of powdered starches as additives were tested: potato starch, cassava starch, cellulose starch, rice starch, wheat starch and corn starch. It was found that a mixture of cassava starch, rice starch and corn starch provided optimal results. The results were further improved when dextrin (obtained from corn) was added to the binder composition.
  • the optimal composition was found to have excellent stability, with no solidification, separation or sedimentation being observed after 7 days. It was also easy to prepare, being readily combined in under 60 seconds, with water having a range of hardness and alkalinity.
  • the binder composition maintained its cohesion, viscosity and adhesive characteristics for 7 days, when stored in a covered container.
  • the binder composition also maintained a stable pH of 9-10 for the same period.
  • Example 3 Comparison of casein dry powder binder composition with petrochemical binder materials
  • comparator petrochemical binder compositions were prepared: an alkyd binder (using mineral spirits as dilutant), an acrylic binder (using alcohol as dilutant), a polyvinyl acetate binder (using Stoddard’s solvent as dilutant), a styrene binder (using acetone as dilutant), a urethane binder (using xylene as dilutant) and a chlorinated rubber binder (using deionised water as dilutant.
  • the dry powder binder composition of the invention was found to have comparable properties of cohesion, adhesion, viscosity and flexibility to the petrochemical binder compositions.
  • Dry powder binder compositions were prepared according to General Method A, each containing a different protein. Each dry powder composition contained 8.5 g of protein, 1 .53 g of sodium carboxymethylcellulose, 1 .53 g of sodium metasilicate, 0.77 g of sodium gluconate, 1 .53 g of sodium metabisulphite, 3.94 g of sodium carbonate, 0.77 g of corn starch, 0.23 g of cassava starch, 0.23 g of rice starch, and 0.92 g of dextrin (from corn). Corresponding liquid binder compositions were then prepared according to General Method B using 20 g of each dry powder binder composition and 200 mL of tap water. A control composition containing only water was also prepared.
  • each composition was determined using litmus strips which had been pre-moistened with deionised water.
  • the cohesive properties of each composition were measured as described in Evaluation Methods, and “cohesion drops” and “cohesion grams” values were determined.
  • the compositions were then left for 48 hours and their stability was then determined by assessing the amount of solidification, separation and sedimentation that had occurred. The results are shown in Table 1 .
  • Example 5 Paints containing dry powder binder compositions of the invention
  • binder compositions of the invention are quick dissolving, with the mixture of sodium salts and starches helping to quickly solubilise the protein, the binder composition also accelerates the protein content of the coating becoming insoluble again, following application to a surface.
  • casein is insoluble in water, when a composition is formed in which the pH is raised its solubility increases dramatically. Following application of the composition to a surface, the water evaporates. The coating absorbs carbon dioxide and other atmospheric acids which causes the pH of the coating to drop, and the casein becomes insoluble once again - in effect the coating is “cured”. The casein coated onto the surface then provide a very durable and moisture resistant surface. Having a quick drying and curing coating greatly improves the usability of protein-based coatings such as casein paint.
  • the dry powder binder composition of the invention When combined with colourants and mineral particles in water, the dry powder binder composition of the invention with the claimed specific mixture of sodium salts, starches and dextrins was found to exhibit a more homogenous distribution when viewed under a microscope camera, compared to alternative compositions using alternative sodium salt/starch combinations. This reduces the risk of streaks or blotches in the application the compositions.
  • the dry powder binder composition of the present invention therefore provides an excellent balance of providing functional properties for the preparation, handling and application of a liquid coating, with ease of use, while also resulting in a high quality final coated product.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Dispersion Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

La présente invention concerne, entre autres, une composition de liant en poudre sèche comprenant : - une protéine ; - un mélange de sels de sodium comprenant : -la carboxyméthylcellulose de sodium, le métasilicate de sodium, le gluconate de sodium, la métabisulfite de sodium et le carbonate de sodium ; - un mélange d'amidons comprenant : - de l'amidon de maïs, de l'amidon de manioc et de l'amidon de riz ; et - une dextrine.
EP24712283.1A 2023-03-13 2024-03-07 Composition de liant Pending EP4680680A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2303612.2A GB2628101B (en) 2023-03-13 2023-03-13 Binder composition
PCT/GB2024/050600 WO2024189316A1 (fr) 2023-03-13 2024-03-07 Composition de liant

Publications (1)

Publication Number Publication Date
EP4680680A1 true EP4680680A1 (fr) 2026-01-21

Family

ID=86052817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24712283.1A Pending EP4680680A1 (fr) 2023-03-13 2024-03-07 Composition de liant

Country Status (3)

Country Link
EP (1) EP4680680A1 (fr)
GB (1) GB2628101B (fr)
WO (1) WO2024189316A1 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6228158B1 (en) * 1999-04-16 2001-05-08 Corn Products International, Inc. Preblended carrier starches for corrugating adhesives
JP5176252B2 (ja) * 2006-10-10 2013-04-03 ヒメノイノベック株式会社 石灰を含有する水配合コーティング組成物の改良
GB2443026B (en) * 2006-10-19 2011-10-05 Stuart Ross Rhind Harling Paint binder composition
JP2008106178A (ja) * 2006-10-26 2008-05-08 Asahi Kasei Chemicals Corp 水溶性高分子乾燥組成物
US9057000B2 (en) * 2008-07-03 2015-06-16 Cargill, Incorporated Protein and starch compositions, methods for making and uses thereof
GB2501079A (en) 2012-04-10 2013-10-16 Stuart Ross Rhind Harling Dry powder paint binder
GB2515692A (en) 2012-04-10 2014-12-31 Nature Paint Ltd Composition for use as a paint binder
GB2501093A (en) * 2012-04-11 2013-10-16 Stuart Ross Rhind Harling Powder paint dispersion composition
CN105820639A (zh) * 2016-05-09 2016-08-03 孙法峰 一种抗裂性外墙腻子及其制备方法
CN106634820A (zh) * 2016-12-17 2017-05-10 浦北县建业胶合板有限责任公司 一种环保型胶合板用高强耐水抗霉变胶粘剂及其制备方法
CN107126376A (zh) * 2017-05-09 2017-09-05 广州艺思晨日用化工有限公司 一种染发粉及其制作方法

Also Published As

Publication number Publication date
GB202303612D0 (en) 2023-04-26
GB2628101A (en) 2024-09-18
WO2024189316A1 (fr) 2024-09-19
GB2628101B (en) 2025-06-25

Similar Documents

Publication Publication Date Title
US5506280A (en) Modeling dough
CA1130955A (fr) Melange d'algine, de tkp, et de guar
CN101309982A (zh) 外用油漆配方
CN104334657B (zh) 制备多色分散体的方法和由其制得的多色分散体
CA2656899C (fr) Matieres de charge a base de latex permettant d'accroitre le temps ouvert de peintures a faible teneur en cov
Abdulsalam et al. Production of emulsion house paint using polyvinyl acetate and gum arabic as binder
CN105219247B (zh) 一种抗涂鸦双组份透明清漆及其制备方法
EP1568740B1 (fr) Systèmes d'épaississement et compositions de revêtement aqueuses et leurs procédés de fabrication et d'utilitation
ITBO950462A1 (it) Pittura e relativo uso
WO2013153366A1 (fr) Composition se prêtant à une utilisation comme liant pour peinture
JP5781001B2 (ja) 水系塗料組成物および壁面化粧方法
EP4680680A1 (fr) Composition de liant
US4333863A (en) Water resistant texturized wall coverings
RU2528725C2 (ru) Отделочная глазурь для декоративной фактурной среды
CZ200381A3 (cs) Použítí alkylhydroxyalkylcelulózy v případné kombinaci s karboxymethylcelulózou pro zvýšení lesku a potiskovatelnosti
CN116075564B (zh) 含脱乙酰壳多糖的涂料组合物
JP2004530752A (ja) 安定化した殺生物性コーティング組成物および方法
GB2617407A (en) A binder composition for various paints and coatings
US20040181001A1 (en) Synthetic stucco compositions
Patel et al. Novel surface coating system based on maleated shellac
CN109266147A (zh) 一种水性可辊涂艺术涂料及其制备方法
RU2212426C2 (ru) Сухой клей для обоев
Mashat et al. Production of Green Emulsion Paint from Borassus Aethiopum Starch/Terminalia Catappa Seed Oil Copolymer Blend Composite as Binder.
WO2026022720A1 (fr) Composition de revêtement et son procédé de préparation
WO2003044302A1 (fr) Revetement et procede pour le recouvrir des surfaces interieures

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20250911

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR