RU2286365C1 - Aqueous-dispersion dye for preparing high-elastic covers - Google Patents

Abstract

FIELD: production of paint and varnish materials.

SUBSTANCE: invention relates to producing aqueous-dispersion dyes designated for external and internal staining. Invention describes an aqueous-dispersion dye for preparing high-elastic cover comprising an aqueous plasticized acrylic dispersion "Finndisp A-6000" based on copolymer of n-butylacrylate with styrene as acrylic film-forming agent, carbonate filling agent, titanium dioxide as pigment, polymeric associative thickening agent "Akvaflov NLS" based on hydrophobizated polyester polyacetal as a thickening agent, sodium tripolyphosphate and additive "Agapol RA40" based on polycarboxyl polymer ammonium salt as a disperser, additive BIK-037 as a froth breaker representing an aqueous emulsion of mixture of mineral oil, paraffin and silicon, antiseptic "Neomid 220" based on iodine-derivative compounds as a biocide additive, water, and dye comprises additionally rheological additive "BIL-380" based on acrylic polymer as additive for pouring wherein all components are taken in the definite ratio. Invention provides stability of dye in storing, formation uniform paints covering covers with high elastic properties promoting to high stability for evaporation and longevity.

EFFECT: improved and valuable properties of dye.

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Description

The invention relates to the production of paint and varnish compositions, namely, water-dispersion paints intended for external and internal painting of buildings and structures for porous building materials (brick, concrete, cement, cement-lime plaster, wood-fiber board), for wood, primed metal surfaces, old coatings and other porous building materials, for painting tree trunks and other materials prone to cracking.

Known water-dispersion paint (RU 2188217 C2, 2003), including (in wt.%) The following components:

Dispersion of a copolymer of methyl acrylate, butyl acrylate and methacrylic acid 55-70 Kaolin 5.8-10.8 Talc 5.6-10.2 Titanium dioxide 6.0-9.6 Silica sol 3.2-5.0 Pigments 0.1-2.6 Emulsifier - Polyoxyethylene esters of alkyl phenols 0.7-1.0 Transformer oil 0.5-1.0 Thickener 0.5-1.5 White Spirit 0.5-0.7 Preservative 0.2-0.3 Rest to Water one hundred%

The specified composition is intended for internal and external coatings of metal surfaces subjected to pressure treatment, such as bending, corrugation, extrusion. The peculiarity of the paint is that it contains silica sol (TU 2145-002-13002576-94), which, with the recommended composition of the components, allows the coating to give increased bending strength, as well as resistance to abrasion, scratching and corrosion. The use of a dispersion of an acrylic copolymer of methacrylate, butyl acrylate and methacrylic acid provides a high water resistance of the coating and a slight change in coating properties upon wetting, as well as resistance to strong mechanical stress with respect to other latexes. The disadvantage is not a high deformation value (250%), which in some cases cannot ensure the integrity of the coating.

Known for other water-dispersion paint (RU 2069223 C1, 1996), which contains in its composition, wt.%:

Dispersion of a copolymer of methacrylate, butyl acrylate and methacrylic acid 25-35 Filler (chalk) 30-35 Pigment (titanium dioxide) 5-10 Fungicide 0.2-0.4 Emulsifier, antifoam 0.1-0.2 Dispersant 1.0-1.5 Thickener (hydroxymethyl cellulose) 0.3-0.6 Ammonia 0.1-0.3 White Spirit 1.2-3.0 Borax 0.005-0.01 Water Up to 100%

The specified composition is intended for internal and external coatings of concrete, asbestos cement, plaster, however, this composition does not provide strength coating properties that allow deformation of the base.

Also known water-borne composition (RU 2083615 C1, 1997) to obtain coatings that are resistant to abrasion (antifriction), including the following components, wt. %:

60-70% solution in ethylene glycol and partially neutralized butanol epoxyamine rubber adduct and modified with melamine formaldehyde resin 20-25 50-60% aqueous polytetrafluoroethylene suspension 5-8 Acetic acid 0.05-0.2 Nigrosine 0.4-0.8 Diacetone alcohol 4-6 Water Rest

The composition is intended to protect elements of products exposed to external climatic factors during storage and operation, as well as increased corrosion resistance of the coating to sea fog while maintaining anti-friction properties.

The closest in technical essence and the achieved result is the well-known "Water-dispersion composition" (RU 2208026, 2003), which includes a film former, a pigment - titanium dioxide, a carbonate filler, a thickener, an emulsifier, a biocidal additive, a dispersant - sodium polyphosphate, water, coalescing the additive is ester alcohol 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate Texanol and / or butyldiglycol, the structuring additive is Aerosil A-300 or amorphous silica gel, the antifoam additive is an unsaturated ester mixture fatty acids with hydrophobic silica in mineral oil - “Foamex KZ” or tributyl phosphate, antifreeze - ethylene glycol or propylene glycol, while the film-forming composition contains a copolymer of esters of acrylic and methacrylic acids - “Lacropol 101” or unplasticized polymer acrylic dispersion 10 ", as a thickener, the composition contains an associative thickener - a copolymer of (meth) acrylic monomers - Akramos 401 or Akramos 402, or aqueous dispersions of an acrylic copolymer with hydrophobic functions ial groups - "Polyphob TR-117" or "Reolat", as a biocidal additive contains sodium fluoride or a solution of isothiazolone derivatives 1,2,3-hydroxy-5,9,11-trioxadodecane, 1,3-bis (hydroxymethyl) - urea-1,6-dihydroxy-2,5-dioxyhexane - "Parmetol A-26", also contains a polyacid dispersant "Orotan" as a dispersant, in the following ratio, wt.%:

Pigment 14.0-23.7 Filler 3.8-10.0 Emulsifier 0.05-0.2 Dispersant 0.7-1.0 Coalescent 2.7-6.5 Structural Additive 0.15-0.3 Antifoam agent 0.5-1.0 Antifreeze 2.0-5.5 Film-forming - copolymer of esters acrylic and methacrylic acids Lacropolol 101 or unplasticized Finndisp Acrylic Dispersion 55-60 Associative thickener 0.3-0.8 Biocide supplement 0.1-0.2

The composition is intended for painting door and window blocks, floors, walls and building structures (concrete, wood), PVC compositions on previously painted surfaces, as well as pre-primed metal surfaces. A feature is the possibility of introducing polyethylene wax, which leads to increased wear resistance of the coating, resistance to scratching and improvement of decorative properties.

The disadvantage of this composition is its low elasticity and, as a consequence, the impossibility of maintaining a defect-free coating under severe deformation of the substrate, the use of an acrylate thickener in the composition can affect the environmental resistance of the coating.

The technical task of the claimed invention is the creation of a water-dispersion paint with good rheological and consumer properties, forming a highly elastic coating, resistance to abrasion, simplifying the composition.

The stated technical problem is achieved in that the water-dispersion paint to obtain a highly elastic coating, including an acrylic film-forming in the form of an aqueous dispersion of a copolymer of N-butyl acrylate with styrene, a carbonate filler, a pigment - titanium dioxide, thickener, antifoam (antifoam additive), dispersant, biocide additive and water, contains Finndisp A-6000 as an acrylic film-forming aqueous plasticized acrylic dispersion based on a copolymer of N-butyl acrylate with styrene, as e thickener, the polymeric associative thickener Aquaflow NLS based on hydrophobized polyacetal polyester, sodium tripolyphosphate as an dispersant and the addition of Agalol RA 40 - an ammonium salt of a polycarboxylic polymer, as an antifoam additive BIK-037, which is an aqueous emulsion of a mixture of mineral oil, paraffin wax and mineral oil the biocidal additive contains an antiseptic additive neomide 220 based on iodine derivatives (the active substance is 3-iodo-2-propynyl-butylcarbamate) and additionally with holding the additive to the bottling - rheological additive NIR - 380 on the basis of an acrylic polymer with the following component ratio, wt.%:

Water Plasticized Acrylic Dispersion

Findndisp A-6000 35.0-40.0 Carbonate filler 15.0-25.0 Titanium dioxide 15.0-20.0 The above thickener 0.5-1.0

dispersant:

Sodium Tripolyphosphate 0.1-0.3 Additive Agapol RA 40 0.1-0.3 The above antifoam 0.1-0.3 The above antiseptic 0.5-1.0 The above filling additive 0.2-0.3 Water The rest is up to 100%

So, as an acrylic film-forming composition according to the invention (water-dispersion paint) contains an aqueous (for example 50%) plasticized acrylic dispersion Finndisp A-6000 ("Finndisp A-6000" company "Forsyth") based on a copolymer of N-butyl acrylate and styrene.

As a pigment, the paint according to the invention contains titanium dioxide of domestic and imported grades, for example, the Kronos brand.

As a carbonate filler, the paint contains, for example, finely dispersed chalk of the Omiakarb brand, fine-ground natural marble, and others from carbonate-bearing rocks.

As a dispersant, the paint contains sodium tripolyphosphate and the additive "Agapol PA 40" (company "Agakim") based on the ammonium salt of a polycarboxylic polymer. As thickeners, the paint contains an associative polymer dispersant “Akvaflov NLS-200” (“Akvaflov NLS-200”), or Akvaflov NLS-400, or Akvaflov NLS-210, which is an aqueous solution of hydrophobized polyacetal polyesters.

As an antiseptic (biocidal) additive, the paint contains a neomide 220 additive based on iodine-containing (iodine-derivative) compounds (active ingredient 3-iodo-2-propynyl-butylcarbamate) to reduce the impact of biogenic factors.

As a defoamer (antifoam additive), the paint contains the additive BIK-037, which is an aqueous emulsion of a mixture of mineral oil, paraffin and silicone (polymethylsiloxane). As an additive that improves the filling of the paint contains a rheological additive BIK-380 based on acrylic polymer.

The paint according to the invention is prepared by mixing and then dispersing the components in a dissolver. First, water, dispersants, antifoam, filling agent, thickener, filler, pigment are sequentially loaded, then the mixture is dispersed and, when the stirrer is working, acrylic latex (aqueous acrylic dispersion) is introduced.

The table shows specific examples of the paint according to the invention and its main consumer properties.

As follows from the above data, the water-dispersion paint according to the invention has good consumer properties: it is stable during storage, forms uniform, covering coatings with high elastic properties, contributing to high abrasion resistance and durability.

The compositions of the water-dispersion paint according to the invention, its properties and the properties of coatings based on it.

Table No. p / p Name of components; properties The content of the components in the examples, wt.% one 2 3 four 5k 6k 7k 8* one Finndisp A-6000 water plasticized acrylic dispersion (Finndisp A-10) * 40,0 40,0 40,0 35.0 40,0 50,0 30,0 55-60 2 Carbonate filler - fine chalk 24.1 24.4 24.4 15.0 29.1 14,4 34,4 3.8-10.0 3 Titanium dioxide 20,0 20,0 20,0 15.0 15.0 20,0 20,0 14-23


four Polyester associative thickener: - Akvaflov NLS-200 - - 0.5 1,0 - 0.5 0.5 - - Akvaflov NLS-400 0.8 - - - - - - - - Akvaflov NLS-210 - 0.5 - - - - - - 5 Defoamer - additive BIK-037 0.2 0.2 0.2 0.1 0.2 0.2 0.2 - 6 Antiseptic supplement Neomid 220 1,0 1,0 1,0 0.5 1,0 1,0 1,0 -


7 Dispersants The content of the components according to the examples, wt.% one 2 3 four 5k 6k 7k 8 sodium tripolyphosphate 0.3 0.3 0.3 0.1 0.3 0.3 0.3 0.7-1 Agapol RA 40 additive 0.3 0.3 0.3 0.1 0.3 0.3 0.3 8 Additive for bottling BIK-380 0.3 0.3 0.3 0.2 0.3 0.3 0.3 - 9 Water 13.0 13.0 13.0 33.0 13.0 13.0 13.0 - 10 Thickener Polyphob TR-117 ** - - - - 0.8 - - 0.3-0.8

eleven Antifreeze (ethylene glycol) 0 0 0 0 0 0 0 2.0-5.5 12 Structural Additive (Aerosil) 0 0 0 0 0 0 0 0.15-0.3 13 Emulsifier 0 0 0 0 0 0 0 0.05-0.2 fourteen Coalescent (texanol) 0 0 0 0 0 0 0 2.7-6.5 eleven Viscosity, s to B3-4 25 17 25 twenty fifteen 35 17 fourteen 12 Storage stability choir., choir., choir., choir., bad., choir., choir., choir., 13 The appearance of the coating smooth, uniform, covering smooth, uniform, covering smooth, uniform, covering smooth, uniform, covering bad, bad shelter shallow heterogeneous smooth, uniform, covering fourteen Elasticity,% 500 500 500 500 500 600 300 5-10 * - prototype
** - in example 5 to (control) as a thickener used a known thickener used in the closest analogue (prototype); 5k-7k control examples showing the effect of the ratios on the final properties; Example 8 relates to a prototype.

Claims (1)

Water-dispersion paint for obtaining a highly elastic coating, including acrylic film-forming in the form of an aqueous dispersion of a copolymer of N-butyl acrylate with styrene, a carbonate filler, a pigment - titanium dioxide, thickener, antifoam, dispersant, biocide additive and water, characterized in that it contains as Finndisp A-6000 acrylic film-forming aqueous plasticized acrylic dispersion based on a copolymer of N-butyl acrylate with styrene, as a thickener, the polymer associative thickener Ak wafers NLS based on hydrophobized polyacetal polyester, as a dispersant sodium tripolyphosphate and Agapol RA 40 additive based on the ammonium salt of a polycarboxylic polymer, as an antifoam additive BIK-037, which is an aqueous emulsion of a mixture of mineral oil, paraffin and silicone, as an antiseptic - Neomid 220 based on iodine-based compounds and additionally contains an additive for bottling - rheological additive BIK-380 based on acrylic polymer in the following ratio comrade, wt.%: Water Plasticized Acrylic Dispersion Findndisp A-6000 35.0-40.0 Carbonate filler 15.0-25.0 Titanium dioxide 15.0-20.0 The above antiseptic (biocidal supplement) 0.5-1.0 The above thickener 0.5-1.0 Dispersant: sodium tripolyphosphate 0.1-0.3 Agapol RA 40 additive 0.1-0.3 The above antifoam 0.1-0.3 The above filling additive 0.2-0.3 Water Rest