Method of producing latex paints containing biocides, ground dispersion phase for latex paints

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a latex paint composition containing biocides. The method of producing a paint composition involves preparation of a ground phase by mixing one or more pigments, other components of the ground phase and a biocide which is insoluble in water and mixing the ground phase with one or more latex resins and other liquefying components, where the biocide which is insoluble in water is a composition with high content of solid particles which preferably contains at least 50 wt % biocide. Components of the ground phase are selected from one or more components such as: cosolvents, coalescence agents, thickeners, surfactants, pigment dispersers, neutralising substances and antifoaming agents. Liquefying components are selected from one or more components such as: latex resins, pigment suspensions, coalescence agents, thickeners, neutralising substances and antifoaming agents. The water-insoluble biocide is particularly 1,2-benzisothiazol-3(2H)-one and is a composition with high content of solid particles which preferably contains at least 80 wt % biocide. The invention also relates to a ground phase for use in the method of producing latex paint which contains one or more pigments, ground phase components and a biocide which is insoluble in water, said biocide being a composition with high content of solid particles which preferably contains at least 50 wt % biocide. Components of the ground phase are selected from one or more components such as: water, cosolvents, coalescence agents, thickeners, surfactants, pigment dispersers, neutralising substances and antifoaming agents.

EFFECT: method enables to include a biocide in a form which does not contain volatile organic compounds.

11 cl, 3 tbl

 

The scope of the invention

The invention relates to a method of use, biocide, water-insoluble, water-soluble latex paint and new compositions containing insoluble biocide.

The level of technology

Latex paints are water-based systems, which typically receive a two-step method. First, a disperse phase, usually called ground phase, obtained by mixing dry pigments paints blended with other components of the phase, including most other solid powder materials composition, with constant stirring with a high shear to provide a high viscosity and high solids content. This part of the method developed to effectively moisten and dissolve dry pigments and to stabilize them in water dispersion.

The second stage of the production method of the ink, usually referred to as phase liquefaction, because viscous grinding diluted with the remaining components of the composition, which are generally less viscous than the milled mixture. Typically, the latex resin, any pre-dispersed pigments and any other materials paints, which require only mixing and possibly soften the shift, during the phase of depression. Phase liquefaction can be performed either by the sequential addition of razzias the x components into the container, containing ground mixture, or by adding the milled mixture in a container containing a pre-prepared mixture of latex resins and other vasospasm components, followed by the sequential addition of end-thinning components. In any case, it needs constant stirring, while the application of effort high shear is not required.

Biocides typically include in latex paint to make the paint resistant to microorganisms. Biocides can be incorporated at various stages of a method of manufacture of paint, but they are usually added at the last stages, to reduce the exposure to high temperature or potential decontamination reagents.

Several biocides, not soluble in water, such as BITS (1,2-benzisothiazol-3(2H)-one)is known to be very effective to control the growth of organisms in aquatic environments. However, the inclusion of biocides that are not soluble in water, latex paint is questioned because of the potential material that is not soluble in water, aglomerirovanie and, thus, lead to paint with unacceptable properties. As a result, the inclusion of water-insoluble biocides, not soluble in water, demanded that they served as a solution or dispersion with a low content of solid particles in a solvent such as glycol, or as a dispersion in water. P is the physical alteration of solvent to feed biocides, not soluble in water, paint, however, is undesirable for several reasons. Solvents increase the presence of volatile organic compounds (VOCS) during the production of paints, and in the end Crusades product. Solvents also increase the cost of paint materials, add to the needs of accounting and storage and increase transportation costs. As a consequence, a significant advance in the field as the value and prospects of the impact on the environment, it would be a condition of new techniques include biocides, not soluble in water, latex paint, with limited use of solvents.

The invention

In one aspect the invention provides the production method of the composition of the latex paint. The method includes: preparing the dispersed phase mixing one or more pigments, and other components of the ground phase and biocide, not soluble in water; and mixing the dispersed phase with a latex resin and other vasospasm components.

In another aspect the invention provides a disperse phase for use in the method of production of latex paints. The dispersed phase comprises: one or more pigments; other ground components phase; biocide, not soluble in water.

Detailed description of the invention

The invention provides methods for the inclusion of a biocide, not soluble in water, in the composition of the latex paint. The method proposes to include a biocide in the form that does not contain volatile organic compounds (VOCS). The method also reduces the cost for the ink supplier and for the customer, reduces the demand for components materials (for example, composition a BIT with activity 60-85% can be used in the invention and not part of the activity of 20%available on the technology used at the present time) and reduces transport costs and dangers.

The method according to the invention includes: preparing the ground phase by mixing one or more pigments, other ground components of the phase and biocide, not soluble in water; and mixing the milled phase with one or more latex resins and other vasospasm components.

Ground phase requires mixing dry pigments and other ground components phase in a mixture with high viscosity and high solids content. Usually inorganic pigments include particles of inorganic minerals are not soluble in water, ranging in size from submicron to several microns. Inorganic pigments provide an opaque film of paint, adjust the level of brightness and improve the longevity of the film. Inorganic pigments are also used to adjust the viscosity of the paint. Mainly, the titanium dioxide is in the form of either rutile, or anatase, is usually used a matte pigment.

Other inorganic pigments, called pigments, filler, provide other benefits, described above, and some enhance the effectiveness of matting matting pigment. The usual filler pigments include kaolin clay, calcined kaolin clay, natural or synthetic calcium carbonate, talc, natural or synthetic silica, mica and feldspar.

In addition to the inorganic pigments, some paints may also include organic pigments-dyes and other specialized pigments. Some pigments can be included in the paint as pre-dispersed aqueous slurry. Otherwise, the pigments are added as dry powders to the ground phase.

The co-solvents, such as glycols, including propylene glycol or ethylene glycol, can be added to ground phase to give the paint stability during repeated freezing and to add film-forming ability, slowing down the evaporation of the liquid phase after application. Means coalescence, such as ethers and esters of alcohols can be added to plastifitsirovanie latex particles and, thus, enabling or enhancing the ability of particles to coalescence with the formation of the paint film. 2,2,4-Trim the Teal-1,3-pentanediol monoisobutyrate usually used as a means of coalescence.

Thickeners are usually applied in order to adjust the rheological properties of the paint from the manufacturing process before storage and use. Different types of thickeners can be used, including the associative, nonassociative and thixotropic. The thickeners described as associative (that is, not bound to latex particles), are usually soluble cellulosic polymers such as hydroxyethylcellulose. Associative thickeners include modified cellulose polymers, hydrophobically-modified alkali-swelling of emulsion polymers and hydrophobically-modified ethoxylated polyurethane resin. Clay or modified organic clay thickeners, often called thixotropic means can also be used to adjust certain rheological properties.

Surface-active substances (surfactants)are added to ground phase, and assist in the wetting of dry pigment particles during the manufacturing process. Surfactants also stabilize the variance of the latex from flocculation (flocculation) of the paint composition and provide the paint is compatible with the dispersion of the dye, which is often added by the end user. Commonly used non-ionic surface-active the substances and anionic surfactants. Many commonly used nonionic surfactants are simple alkilirovanie the polyesters. Examples of anionic surfactants include salts of phosphoric esters and salts of sulfates simple alkylaromatic polyesters.

The pigment dispersant is also commonly used as an additive to ground phase. The pigment dispersant is soluble materials, physico-chemical adsorption on the surface of the pigment particles stabilizes the dispersion of the pigment particles from re-agglomeration. Examples of commonly used dispersants are salts of polyacrylic acids or modified polyacrylic acids and the salts of polyphosphates such as sodium hexametaphosphate.

Neutralizing substances are bases that neutralize the acidic components of the composition, thereby raising the pH of the paint composition to an alkaline level. The resulting surface charges, purchased latex particles and many types of pigment particles, give stabilization against flocculation. The most common inorganic bases are ammonia, sodium carbonate and sodium hydroxide. The most used organic bases are derived alkanolamines, which have additional functions, including the activity as is operatorov for pigments. Neutralizing agents are often added to ground phase, which may be followed by additional doses added to the thinner.

Defoamers can be added at different times during the production process to prevent the formation of foam. Most of defoamers created either on the basis of silicone material, or on the basis of oil, and some contain hydrophobic silicon dioxide.

According to the invention, the biocide is not soluble in water, also add to the ground phase. "Insoluble in water" means that the solubility in water is 0.5 wt.% or less, more preferably 0.25 wt.% or less and even more preferably 0.1 wt.% or less at 25ºC. Preferably the biocide must have sufficient chemical and thermal compatibility to be able to withstand rough conditions stage grinding when mixing phase. Examples of suitable biocides include 1,2-benzisothiazol-3(2H)-he (BIT), ortho-phenylphenol (OFF), alkalization, such as activitieslike (RTO), 3-iodine-2-propynylbutylcarbamate (IPBC), carbendazim (methyl ester of 2-benzimidazolecarbamic acid), CHLOROTHALONIL (1,3-dicyanomethylene), Diuron (1,1-dimethyl-3-(3,4-dichlorophenyl)urea), antibacterial drugs on the basis of azoles, such as tebuconazole (alpha-[2-(4-chlorophenyl)-ethyl]-α-(1,1-is Imereti)-1H-1,2,4-triazole-1-ethanol), propiconazole (1-[[2-(2,4-dichlorophenyl)-4-propyl-1,3-dioxolane-2-yl]-methyl]-1H-l,2,4-triazole) and azaconazole (1-[[2-(2,4-dichlorophenyl)-1,3-dioxolane-2-yl]methyl]-1H-1,2,4-triazole), thiabendazole (2-(1,3-thiazol-4-yl)-1H-benzimidazole; 2-(4'-thiazolyl)benzimidazole), zinc the pyrithione, diiodomethyl-para-tamilselvan, 2-(thiocyanomethylthio)-benzthiazole, zinc dimethyldithiocarbamate, triclosan (2',4',4-trichloro-2-hydroxydiphenyl ether), lbutrin (2-(tert-butylamino)-4-(cyclopropylamino)-6-(methylthio)-1,3,5-triazine), terbutryn (2 ethylamino-4-methylthio-6-tert-butylamino-1,3,5-triazine), N-alkylamides BITS, such as N-butyl-BIT, dehalogenation alkalization, such as dichlorodimethylsilane (DHOT), and a mixture of two or more of them. Particularly suitable biocide is a BIT.

The biocide is added to ground phase or as a solid or as a composition with a high solids content, such as dispersion in water or other liquid. Other additives may be included to facilitate the addition of a biocide, such as an additive to improve the fluidity or surfactants. The biocide may be added directly, or it can be packaged, for example, bags, soluble in water, in order to simplify the conversion.

When biocides are supplied as a composition with a high solids content, the composition preferably contains at least bring the flax 50%, more preferably, at least about 60%, even more preferably at least about 70%, and further preferably, at least about 80% by weight of the biocide. Especially preferred biocide is a BIT in the form of a paste with the activity of 70-85%. A sufficient amount of biocide added to provide a concentration in the final crusade product approximately between 0.005 and 2%, preferably from about 0.01 to 0.2% of a biocide (by weight calculated on the total weight of the composition).

Ground phase requires constant stirring wysokosciowe mixer, such as mixer type Cowles. This part of the method developed to create a system that effectively wets dry pigments, then disperses agglomerates of primary particles of the pigment by applying wysokosciowe efforts and stabilizes the dispersion of these particles against re-agglomeration, using an appropriate surfactant, a pigment dispersant and a neutralizing substance.

Pigments and all other solid materials should be sifted into the mixture with variable speed to allow complete wetting of all solid particles. Although the order of addition will vary depending on the specific composition and requirements of the method, the typical procedure is as follows.

Water to relax the Ute in a suitable mixing vessel. The volume used is proportional to the amount of dry pigment to yield a composition with a high content of solid particles still pseudoalloy dispersion.

The thickener is then added to the vessel and for a sufficient amount of time to grind the mixture to thicken, although the subsequent addition of the neutralizing agent may be useful for the development of viscosity. The mixing rate increases with increasing viscosity to maintain a homogeneous mixture.

Then add a surfactant and a dispersant of the pigment, followed by defoamers, co-solvents, tools coalescence and neutralizing substances.

Dry pigments are then added to the ground phase and the mixing rate increases as increases the viscosity and the level of solid particles while adding pigment, so that uniform mixing was maintained during the process.

The biocide can be added at any point during the phase of refining, but preferably it is added together with dry pigments.

Wash water may be added to the process at various points for quantitative transfer of raw materials from collections and process lines, etc. and cleaning of solid particles of pigment surfaces of the vessel mixer and a rotating shaft of the mixer. However, the full about the eating of wash water should be limited, in order to maintain a fairly high level of solid particles for efficient milling process.

End-milled mixture is stirred at high speed for such a period of time to achieve complete dispersion of agglomerates of primary particles of the pigment and the formation of a stable dispersion. The mechanical energy thus applied to the system, can increase the temperature to a value much greater than the ambient temperature. Therefore, the temperature can be controlled, if thermostability of any materials of composition is of interest. The completion of the milling process can be defined by the sensor of raster to confirm a sufficient degree of dispersion of agglomerates of pigment particles.

Stage liquefaction production method of the ink includes adding latex resins, any pre-dispersed pigments and the remaining material composition, which only require mixing and possibly soften the shift in contrast to the high shear. Latex resins are water dispersions of organic polymer particles. Common types of polymers include acrylic, vinyl acrylic, copolymerizable with styrene acrylic and polyvinyl esters acid "Versatic". After application and drying of the paint, the floor is measured particles coalescent with the formation of a continuous film coating on the substrate, and thus, serve as a binder of the paint.

Phase liquefaction can be performed either by the sequential addition of thinning components in the vessel containing the milled mixture, or by adding the milled mixture in a vessel containing thin components, or a combination of such options.

As an example of a typical, though not required by the method is the initial addition of the latex resin to the milled mixture, followed by other vasospasm components, usually in the following order: the suspension of the pigment means of coalescence (especially if not included in the milled mixture) and associative thickeners. Moderate shear applied during the period of time sufficient to activate the thickeners and allow the viscosity to develop. Can then be added as a neutralizing substance, followed by water. In addition, water may be added at other points, respectively, to maintain the desired viscosity of the system across the way, as well as water washing process. The defoamer may be added, if necessary, during the liquefaction process. The final viscosity and pH of the composition to regulate the thickening agent, a neutralizing agent and water, using further additives, if necessary.

It should be noted that previous lists typical components of rasmala the phase and thinning of the components is provided only as an example, and not all such components will be required in each part of latex paint, and additional components not described herein may also be included. Specialist in technology can easily determine which components to include for a particular application.

The following examples are presented as illustrative examples of the invention but are not intended to limit its scope.

Examples

Multiple downloads of laboratory scale composition of semi-gloss latex paint with low VOC prepare to evaluate the bactericidal efficiency of 1,2-benzisothiazol-3(H)-it (a BIT), if it is added as a solid powder to the milled mixture, relative to its characteristics when it is added during liquefaction as 20% solution in dipropyleneglycol and water. Each loading dye contains 500 M. D. (0.05 wt.%) active BIT (wt.% relative to the weight of the whole). Re-boot do with each of these forms of BITS included in the form. Prepare a checklist loading, in which the BIT is not added.

Tables 1A and 1B show two composition components which are listed in the order added. Rasmol (table 1A) and reducers (table 1B) get in glasses made of stainless steel with a high-speed stirrer type Cowles diameter of 2 inches (5 cm).

Table 1A
Part I, a 20% solution of BITSPart II, pasta BITS
Generic nameTrade nameQuantity (g)Quantity (g)
The grinding
Water264,3198,2
Associative thickener #1Emulsion acrylic polymerUCAR Polyphobe (Polyfab) TR-116 (1)10,98,2
Dispersant pigmentThe solution of functionality-cell acrylic polymerTamol (Tamol) 1124 (2)4,83,6
Anionic surfactantsEther phosphate surfactant Strodex (Stridex) PK-95G2,01,5
Nonionic surfactantsSimple alkilammonia polyester, PAVTriton (Triton) CF-10 (1)2,41,8
AntifoamPetroleum distillate with a hydrophobic silicon oxideRhodoline (Rogalin) 643 (4)6,44,8
The co-solventPolypropylenglycol9,67,2
Neutralizing substance2-amino-2-methyl-1-propanol with 5% waterAMP-95 (1)8,46,3
Matting pigmentTitanium dioxide, rutileTiPure (Ti pure R-706 (5)376,0282,0
Biocide BIT, solid powder (85% activity)1,2-benzisothiazol-3(2H)-he0,00 0,75
Filler pigmentClay kaolinPolygloss (Polyglass) 90 (6)56,042,0
Ground mixture of intermediate result740,80556,4

Table 1B
Part I, a 20% solution of BITSPart II, pasta BITS
Generic nameTrade nameQuantity (g)Quantity (g)
The thinner
Moved milled mixture 277,8278,2
Water14,014,0
Latex resinVenerability latexUCAR Latex (Latex) 300 (1)289,2289,2
The tool coalescence;Monoisobutyrate 2,2,4-trimethyl-1,3-pentanediolTexanol Ester Alcohol (7) (Texanol epireport)2,92,9
Associative thickener #2Emulsion acrylic polymerUCAR Polyphobe (Polyfab) TR-116 (1)6,86,8
Biocide-BIT, 20% solution1,2-benzisothiazol-3(2H)-he;1,600,00
AntifoamPetroleum distillate with a hydrophobic silicon oxideRhodoline (Rogalin) 643 (4)1,2 1,2
Water46,147,0
Full part639,6639,3
(1) Products of Dow chemical (Dow Chemical Co) and its subsidiaries
(2) Products of Rum and Haas (Rohm and Haas)
(3) Products of Dexter chemical (Dexter Chemical LLC)
(4) Products Rhodia (Rhodia)
(5) Products DuPont chemical (DuPont Chemicals)
(6) Products Guber Corporation (J.M. Huber Corporation)
(7) the Products of Eastman chemical (Eastman Chemical)

One source ground mixture to get the Composition I in a glass of 1200 ml, from which aliquots are transferred into two cups 600 ml for dilution. The addition of a solution of BITS in these two separate liquefaction vessel requires a separately weighted doses, thus providing a check from inaccurate weighing. Separate rasmala get for two repeat experiments for Composition II. In this case, the paste-BIT pre-mixed with pigment (titanium dioxide) and add together to minimize losses during add.

Five samples of paint: Part I #1, Part I #2, Part II #1, Part II #2 and the Control, check on the long-term efficacy save the tion, using cetarehziklica the load test, commonly used in the paint industry, in order to evaluate the effectiveness of preservatives.

Twenty-four hour culture tripticase soy broth combine in equal parts for inoculation of the composition at a final concentration of 5×106 CFU/ml (colony-forming units per milliliter). Used organisms: Pseudomonas aeruginosa (ATCC#15442), Pseudomonas aeruginosa (ATCC#10145), Enterobacter aerogenes (ATCC#13048)Escherichia coli (ATCC# 11229), Klebsiella pneumoniae (ATCC#8308), Staphylococcus aureus (ATCC#6538), Salmonella choleraesuis (ATCC#10708).

Testing begins (day 0) dosing in the test sample group of the above bacterial organisms (5×106 CFU/ml)followed by the equivalent of vaccination at 2, 7 and 14 day 28 day study. To determine the extent of contamination, an aliquot of each sample taken on the day 0, 1, 2, 3, 6, 8, 13, 15, 20, 27 and used to determine the approximate concentration of bacteria. Samples evaluated on a scale from 0 to 8 points represent the average of triple experiments (table 2). Score 0-2,9 was installed as the passing threshold and indicates that little or no bacteria not present in the sample.

Note that the transitional assessment, more than 2,9 are normal for many applications and may reflect a slow onset of action of the biocide directly after bacterial when is ivci. However, the transitional high scores do not necessarily indicate a lack of efficacy of preservatives.

Table 2
Scale microbiological evaluation of bacterial contamination
ScoreApproximate number of CFU/ml
0<50
15×101-5×102
25×102-5×103
35×103-5×104
45×104-5×105
55×105-5×106
65×106-5×107
75×1O7-5×108
8>5×108

Table 3 shows the results of microbiological testing. While transient pollution appears on day 1 and 2 for Part II #2, it is usually seen in microbiological assessments. The data is clear the show all four of well-preserved and do not support bacterial growth regardless of the method of adding BITS. Control sample supports the growth of bacteria throughout the study, demonstrating that BIT provides a bactericidal effect.

Table 3
The results of the 4-cycle stress test five samples of paint
SamplesDay 0Day 1Day 2Day 3Day 6
Part I #150011
Part I #250000
Part II #150000
Part II #25520 0
Control55555
SamplesDay 7/8Day 13Day 14/15Day 20Day 27
Part I #100000
Part I #200000
Part II #100000
Part II #200000
Control55 555

While the invention is described above according to its preferred options, it can be modified within the essence and scope of this invention. Therefore, this proposal includes any variants, using the General principles disclosed. Further, the proposal includes deviations from the present disclosure without departing from the invention.

1. The production method of the composition of the dye, and the method includes: preparing the ground phase by mixing one or more pigments, and other components of the ground phase and biocide, not soluble in water; and mixing the milled phase with one or more latex resins and other vasospasm components, where the biocide is not soluble in water, is a composition with a high solids content, which preferably contains at least 50% by weight of the biocide.

2. The method according to claim 1, in which the components of the ground phase is chosen from one or more components, such as co-solvents, tools coalescence, thickeners, surfactants, pigment dispersant, neutralizing agents and defoamers.

3. The method according to claim 1, wherein thinning the components are selected from one or more components, such as: latex resin, the pigment suspension, cf is DSTV coalescence thickening agents, neutralizing agents and defoamers.

4. The method according to claim 1, wherein the biocide is 1,2-benzisothiazol-3(2H)-he (BIT), ortho-phenylphenol (OFF), alkalization, such as activitieslike, 3-iodine-2-propynylbutylcarbamate, carbendazim, CHLOROTHALONIL, Diuron, antibacterial drugs on the basis of azoles, such as tebuconazole, propiconazole and azaconazole, thiabendazol, zinc pyrithione, diiodomethyl-para-tamilselvan, 2-(thiocyanomethylthio)-benzthiazole, zinc dimethyldithiocarbamate, triclosan, cybotron, terbutryn, N-alkyl substituted BITS, such as N-butyl-BIT, dehalogenation alkalization, such as dichlorodimethylsilane (DHOT) and a mixture of two or more of them.

5. The method according to claim 1, wherein the biocide is 1,2-benzisothiazol-3(2H)-he (BITS).

6. The method according to claim 1, wherein the biocide is not soluble in water, is 1,2-benzisothiazol-3(2H)-it is a composition with a high solids content, which preferably contains at least 80% by weight of the biocide.

7. Ground phase for use in the method of manufacturing a latex paint comprising: one or more pigments; components of the ground phase; and a biocide, is not soluble in water, where the biocide is not soluble in water, is a composition with a high solids content, which preferably contains at IU is e, 50% by weight of the biocide.

8. Ground phase according to claim 7, in which the components of a ground phase is chosen from one or more components, such as: water, co-solvents, tools coalescence, thickeners, surfactants, pigment dispersant, neutralizing agents and defoamers.

9. Ground phase according to claim 7, in which the biocide is 1,2-benzisothiazol-3(2H)-he (BIT), ortho-phenylphenol (OFF), alkalization, such as activitieslike, 3-iodine-2-propynylbutylcarbamate, carbendazim, CHLOROTHALONIL, Diuron, antibacterial drugs on the basis of azoles, such as tebuconazole, propiconazole and azaconazole, thiabendazol, zinc pyrithione, diiodomethyl-para-tamilselvan, 2-(thiocyanomethylthio)-benzthiazole, zinc dimethyldithiocarbamate, triclosan, cybotron, terbutryn, N-alkyl substituted BITS, such as N-butyl-BIT, dehalogenation alkalization, such as dichlorodimethylsilane (DHOT) and a mixture of two or more of them.

10. Ground phase according to claim 7, in which the biocide is 1,2-benzisothiazol-3(2H)-he.

11. Ground phase according to claim 7, in which the biocide is 1,2-benzisothiazol-3(2H)-it is a composition with a high solids content, which preferably contains at least 80% by weight of the biocide.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to an electrodeposited coating composition which can be deposited on an electroconductive substrate by anodic electrodeposition, substrates coated by such a coating composition and a method of coating a substrate. The electrodeposited coating composition is an aqueous dispersion containing at least a partially neutralised copolymer which contains an α-olefin and an unsaturated carboxylic acid, and a curing agent in form of a metal peroxide. After applying the electrodeposited coating composition by immersing the substrate into said composition, the deposited layer is heated in order to cure the coating and form a cross-linked mesh which provides a durable coating which is resistant to spalling and corrosion.

EFFECT: providing a durable coating which is resistant to spalling and corrosion.

21 cl, 2 tbl

FIELD: construction.

SUBSTANCE: heat insulation coating represents a mixture of metallised and non-metallised ceramic microspheres, as a binding substance of which a mixture is used containing styrene-acrylic latex (5.0-10 wt %), sodium liquid glass (1.0-3.0 wt %) and low-molecular silicon rubber (4.0-6.0 wt %). Metallisation of ceramic microspheres is arranged from a soft magnetic iron metal, with thickness of 800-900 angstrom. In process of coating application, microspheres are exposed to magnetic power lines, for creation of which on the reverse side of the surface of the item of complex configuration, in respect to the side, onto which a coating is applied, there is a steel core, an induction winding, wires to supply current and voltage.

EFFECT: higher efficiency and productivity of heat insulation works.

1 dwg

FIELD: chemistry.

SUBSTANCE: invention can be used to produce artificial film-type electroconductive coatings (resists) for making radar-absorbent filler. The electroconductive paint for radar-absorbent filler contains polyvinyl acetate binder, colloidal graphite, water and OP-10 emulsifying agent.

EFFECT: invention enables to obtain and control resistivity of a current-conducting coating in the range of 150-800 ohm·cm.

2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: aqueous coating composition contains at least one water-soluble film-forming polymer selected from polyurethanes, polyesters, polycarbonates and polymers obtained by polymerising olefinically unsaturated monomers and additionally contains solid particles of an amine resin based polymer. The coating is formed on a substrate by applying the aqueous composition to obtain a peelable temporary coating.

EFFECT: solid particles of an amine resin based polymer used in the aqueous composition improve peeling capacity of the temporary coating layer.

11 cl, 1 tbl, 3 ex

FIELD: transport, package.

SUBSTANCE: group of inventions relates to containers for food products and beverages and methods for applying coating on them. Containers for food products and beverages include metal substrate which has at least partially applied covering composite including water-dispersible system of resin and water carrier. Resin system includes epoxy component and acrylic component. Then composite is hardened and formed on metal substrate of hardened covering. In the preferable version of implementation, covering composite is at least minimally suitable for autoclaving in hardened condition.

EFFECT: elimination of covering corrosion, water absorption by covering and/or loss of adhesion to base substrate, as well as excluding influence of aggressive chemical properties of food product or beverage on the covering on water basis.

15 cl, 4 tbl, 14 ex

FIELD: chemistry.

SUBSTANCE: universal thick-layer anticorrosion paint system includes an aqueous aryl-containing dispersion with a crosslinking agent, target additives, an instant corrosion inhibitor, a water-soluble organic corrosion inhibitor, an anticorrosion pigment and other pigments, nanodispersed silicon dioxide, plate-like and active filler and water. Corrosion inhibitors and the anticorrosion pigment are capable of forming nanosized protective layers on a metal surface under a paint film. The nanodispersed silicon oxide provides thick-layered application of the paint coat. In order to seal the paint coat structure and increase enhance its water-repellent properties, nanodispersed fluoroplastic is additionally used in the paint system.

EFFECT: longevity of the paint coat, increase in cost effectiveness of paint and repair works owing to fewer layers and increase in thickness of the coating, increase in inter-repair period of metal structures to 28 years.

1 tbl, 10 ex

FIELD: chemistry.

SUBSTANCE: water-dispersion paint composition contains a polymer acrylic component, pigments, an organic thickener and a surfactant. Besides water, biocidal and coalescent additives, the composition contains corrosion inhibitors of prolonged and instant action, a thixotropic rheologic additive, a plasticiser - dibutylphthalate, antipyrene and additional property modifiers of the film coating of the composition in form of fractionated microbarite, magnesium hydroxide, aluminium hydroxide, microwollastonite and fractionated micromica.

EFFECT: high fire-resistance of coatings and improved anti-corrosion properties of metals - ferrous, aluminium, brass, enamelled surfaces during prolonged operation with retention of decorative properties.

4 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: coating composition has a latex component and a volatile coalescing solvent substituting agent. The agent has the formula: X(AO)nH, where X is a group from C6 to C16, selected from a group of linear chains, branched chains, aromatic rings and combinations thereof, AO is an alkyleneoxy group selected from ethyleneoxy groups, 1,2-propyleneoxy groups, 1,2-butyleneoxy groups and combinations thereof, and n varies from 3 to 14. The coating composition has content of volatile organic compounds less than or equal to 150 g/l. The volatile coalescing solvent substituting agent has little or no contribution into the total level of the volatile organic compounds in the coating composition.

EFFECT: obtaining a coating composition with high continuity and restorability, suitable low-temperature coalescence, resistance to adhesion and operational parameters in freezing and thawing conditions.

25 cl, 11 tbl

FIELD: chemistry.

SUBSTANCE: lacquer contains an acryl-containing dispersion, target additives, a corrosion inhibitor and water. In order to reduce permeability of aggressive agents through the lacquer coating, the lacquer additionally contains a cross-linking agent of the acrylic dispersion based on a water-soluble zinc oxide complex. In order to improve anticorrosion properties of the lacquer film, the lacquer additionally contains a water-soluble organic corrosion inhibitor based on a mixture of potassium octadecanate, tripotassium phosphate and a 2,2,2''-oxyaminophosphate complex of calcium and magnesium.

EFFECT: high environmental safety, cutting power consumption and labour input of the preservation process and degreasing metal surfaces, improved anticorrosion properties of the coating in aggressive atmospheric conditions.

1 tbl

FIELD: chemistry.

SUBSTANCE: composition contains butyl ether of acrylic acid, styrene, methacrylic acid, 44-46% aqueous solution of a sodium salt of polyacrylic acid, 40% aqueous solution of ethoxylated isotridecanol, 24-26% aqueous solution of a sodium salt of a sulphated ethoxylated mixture of synthetic linear fatty alcohols C12-C15, sodium peroxydisulphate, 70% aqueous solution of tertbutylhydroperoxide, sodium formaldehyde sulphoxylate, potassium hydroxide, aqueous ammonium solution, biocide and deionised water. The method involves addition of components in a defined sequence at specified temperatures.

EFFECT: invention enables to obtain a composition using available material and increase water resistance of the coating in moist facilities.

4 cl, 1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to versions of a water-based coating composition which is suitable for use particularly in the aerospace field. The water-based coating composition contains: (a) an essentially anhydrous basic component containing at least one hydrophilic polyol resin and at least one hydrophobic polyol resin, (b) an activating component containing at least one hydrophobic polyisocyanate and (c) water, wherein said composition contains 1-3 wt % of an organic solvent of the total weight of the water-based coating composition and component (a), (b) and (c) are mixed shortly before applying the water-based coating composition. In one version of the composition, the hydrophilic polyol resin can be selected from a group consisting of polyesters, polyethers, polyurethanes, caprolactones, alkyde resins and combinations thereof. Described also is a coating made using the polyurethane compositions disclosed herein.

EFFECT: obtaining water-based coating compositions which are stable during storage and have significantly low content of volatile organic compounds, coatings from which have improved technical characteristics such as impact resistance, specular gloss and longevity.

15 cl, 17 tbl, 7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to pipeline construction and is used in field and basic conditions when laying underground main pipelines for protection thereof from corrosion, mechanical damage and during construction of gas or liquid transporting field and industrial pipelines in conditions of permanently frozen soil, when laying pipelines on swamps, on waterlogged areas, particularly for repairing anti-corrosion coatings of oil pipelines, oil product pipeline and gas pipelines during repair thereof in field conditions, including without stopping transportation of the product, and during corrosion protection of piping of compressor stations at pipeline temperature of 70-90°C, on a section of a pipeline transporting gas at temperature above zero after a compressor station, e.g. at a section of a discharge line transporting compressed gas at temperature of plus 40°C. Versions of anti-corrosion paint for obtaining an external polyurethane two-component protective coating are given. The paint is obtained by mixing component A and component B - polyisocyanate based on diphenyl methane diisocyanate with equivalent mass of 131-135. Component A is a suspension of substances in a hydroxyl-containing polyatomic alcohol with ether and ester bonds with equivalent mass of 230….250.

EFFECT: providing high rate of hardening of the coating with improved protective properties thereof, which prevents development of underfilm and stress corrosion on the pipeline for a period of time comparable with the life of the pipeline.

6 cl

Coating composition // 2479609

FIELD: chemistry.

SUBSTANCE: composition contains the following, wt %: 19.4-24.30 - polyester - polydiethylene glycol adipate with molecular weight of 800, 0.22-1.16 - dicyandiamide, 44.76-48.94 - aromatic isocyanate - 4,4'-diphenylmethane diisocyanate or polyisocyanate based on 4,4'-diphenylmethane diisocyanate, 0.99 - dye and organic solvent - the balance.

EFFECT: improved processing and operational characteristics of the composition, the coating from which has improved strength, chemical resistance to acid solutions, alkali solutions and mixtures of solvents, high thermal stability and hydrolytic stability.

2 tbl, 10 ex

FIELD: chemistry.

SUBSTANCE: aqueous dispersion contains the following structural components: (A) 10-40 wt % of one or more aliphatic polyisocyanate compounds; (B) 40-70 wt % of at least one polyhydroxy compound having molecular weight Mn ranging from 400 g/mol to 8000 g/mol; (C) 19-49 wt % of a non-ionically hydrophilising monofunctional polyoxyalkylene ether which contains only one hydroxyl or amino group and 50-100 wt % of structural components derived from ethylene oxide, and having molecular weight Mn ranging from 1200 g/mol to 3000 g/mol; (D) 0.5-10 wt % of at least one polyamine compound having molecular weight Mn ranging from 32 g/mol to 400 g/mol and functionality greater than or equal to 1; (E) 0.5-10 wt % of a polyhydroxy compound having molecular weight Mn ranging from 62 g/mol to 320 g/mol and functionality greater than or equal to 1; and (F) 0-10 wt % of auxiliary substances and additives; wherein the sum of said structural components (A) through (F) equals 100 wt %.

EFFECT: obtaining novel aqueous polyurethane carbamide dispersions which have sufficiently high storage stability.

6 cl, 9 ex, 2 tbl

FIELD: nanotechnology.

SUBSTANCE: invention relates to a method of obtaining a nanocomposite material for thermal and chemoresistant coatings and planar layers with high dielectric capacitivity. The method is proposed in which, as the polymer binder the poly (o-hydroxy amide) is used - a product of polycondensation of 3,3'-dihydroxy-4,4'-diamino-diphenylmethane and isophthalic acid dichloride in amide solvent, and as a filler the ferroelectric material nanopowder CTSNV-1 Pb0.81 Sr0.04Na0.075Bi0.075(Zr0.58Ti0.42)O3 at a weight ratio of poly(o-hydroxy amide): filler from 1:1.15 to 1:1.5. The ratio of components in the nanocomposite (wt %): poly(o-hydroxy amide) 6-12; filler CTSNV-1-6.9-18, solvent - the rest. Mixing of the components is carried out at room temperature without preliminary dispersion of ferroelectric filler, before applying to the conductive substrate the nanocomposite suspension is subjected to ultrasonic treatment. Films formed on the conductive surfaces are dried at 95-100°C and subsequent stepped heat processing in the temperature range of 200-350°C.

EFFECT: obtained coatings are chemically stable, have a heat resistance up to 400°C, high adhesive capacity to various types of substrates and dielectric capacitivity ε of 23 to 185.

1 cl, 1 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a double-component coating composition (2C), as well as a coated article, a method of making a coated article and use of material which contains a phosphorus-containing polyol as a fireproof material in the disclosed composition. The composition contains: (a) first component containing isocyanate, wherein said isocyanate contains a prepolymer having isocyanate functional groups formed from a reaction mixture containing isocyanate and a material containing a phosphorus-containing polyol with the equivalent ratio of isocyanate groups to hydroxyl groups greater than 1 and the phosphorus-containing polyol which acts as fireproof material is (i) a product of reaction of the source phosphorus-containing polyol, selected from polyphosphate polyols, polyphosphite polyols, polyphosphonate polyols and mixtures thereof and compounds having epoxy functional groups; or (and) a product of reaction of a phosphorus-containing acid, a compound having epoxy functional groups and, optionally, a phosphorus-containing polyol; and (b) a second component containing a polyamine, wherein the first and second components are stored separately and form polyurea after mixing and the composition further contains an additional fireproof material which is added to the first and/or second component and is selected from graphite, halogenated phosphates, phosphates without a halogen, tris(2-chloropropyl)phosphate, tris(2,3-dibromopropyl)phosphate, tris(1,3-dichloropropyl)phosphate, diammonium phosphate, powdered or pyrogenic silicon dioxide, sheet silicates, aluminium hydroxide, bromated fire-retardants, halogenated aromatic compounds, antimony oxide, aluminium oxide trihydrate, metal borates, zinc borate, barium metaborate pentahydrate, ester phosphates, polyvinyl chloride, melamine cyanurate, melamine phosphates, polymelamine phosphates, melamine pyrophosphates, polylmelamine pyrophosphates, melamine borate, other melamine derivatives and mixtures of compounds.

EFFECT: obtaining a double-component coating composition, having improved fire-resistance and heat-resistance.

12 cl, 7 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to a radiation curable coating composition which contains at least one radiation curable oligomer which contains polymerisable unsaturated groups with double bonds, in amount of at least 0.3 mEq/g and has the following formula (I): (C)-(B)-(A)-[(B)(C)]X, where (A) is a residue of one or more polyesters with hydroxyl functional groups, having molecular weight MN greater than 900, glass transition point TG and/or melting point Tm lower than 30°C, which are obtained using an acid component containing at least 75 mol % of a saturated aliphatic polybasic acid having 4-14 carbon atoms and, optionally, 0-25 mol % of another polybasic acid, as well as an alcohol component, (B) is a residue of one or more polyisocyanates, (C) is a residue of one or more unsaturated compounds with double bonds, having hydroxyl groups, and x ranges from 0.5 to 10, wherein said radiation curable coating composition basically does not contain water and volatile organic compounds (VOC). Described is also is a method of making a coated article involving a step where the article is coated with said composition, and use of said composition.

EFFECT: obtaining coatings having high resistance to chemicals and solvents and high flexibility, adhesion and cracking resistance during flexure and fast deformation.

14 cl, 18 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to a coating composition and can be used in making low flammability coatings for sports fields, floors, roofing and waterproof coatings in construction. The composition contains the following components, pts.wt: 100 - hydroxyl-containing low-molecular rubber, particularly a butadiene homopolymer with molecular weight of 2100-3200 and content of hydroxyl groups of 0.8-1.9 wt % or a copolymer of isoprene and butadiene with monomer ratio of 80:20, with average molecular weight of 3000-3500 and content of hydroxyl groups of 0.7-1.1 wt %; 20-24 polyisocyanate; 0.01-1.00 - urethane-formation catalyst; 10-50 - kaolin and 100-150 chalk as mineral filler; 8-10 - lime screenings as a drying agent; 40-50 - plasticiser; 3.0-5.0 - trifunctional low-molecular alcohol; 0.5-1.5 - 2,6-ditertbutyl-4-methylphenol as an antiageing agent; 1.5-2.0 - oleic acid as a surfactant; 1.0-8.0 - pigment and a combination of 12-20 - ammonium polyphosphate, 2-30 - aluminium oxide and 30-40 - sodium tetraborate pentahydrate (borax pentahydrate) as flame-retardants.

EFFECT: improved anti-fire properties of the cured material while maintaining an acceptable level of rheological properties of the composition for a free-casting method of forming coatings.

6 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to construction and can be used in road construction. The coating contains a polymer base - two liquid low-molecular weight rubbers with terminal epoxy and carboxyl functional groups, copolymerisable and three-dimensionally cross-linked by an agent. Said rubber is polydiene isoprene urethane rubber with terminal epoxy groups and polybutadiene rubber with terminal carboxyl groups. The coating also contains filler in form of polyfractional silicon dioxide and additionally contains processing additives which include a three-dimensionally cross-linking agent with epoxy functional groups which are antipodal with respect to carboxyl groups, a thixotropic booster and an elastomer pigment - technical carbon and a catalyst for three-dimensional cross-linking rubber. The ingredients are in the following ratio, wt %: two liquid low-molecular weight rubbers with terminal epoxy and carboxyl functional groups - 9.0-18.0, polyfractional silicon dioxide - 77.0-86.5, process additives - 4.5-5.0.

EFFECT: improved waterproofing properties and frost-resistance of road asphalt.

2 cl, 1 tbl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to use of nanomaterials in wire enamel for improving thermal properties of enamel. The nanomodified wire enamels are usually used in making insulated winding wire. The polymer base of wire enamel is selected from a group comprising polyamideimide, polyester, polyesterimide, polyurethane and mixtures thereof. The nanomaterial is selected from a group comprising nano-oxides, metal nano-oxides, metal oxides or hydroxides of aluminium, tin, born, germanium, gallium, lead, transition metals, lanthanides, actinides and mixtures thereof. The nanomaterial is also selected from a group comprising nano-oxides, metal nano-oxides, metal oxides and hydroxides of aluminium, silicon, titanium, zinc, yttrium, vanadium, zirconium, nickel and mixtures thereof. After applying enamel on the wire and curing thereof, the wire exhibits improved thermal and mechanical properties.

EFFECT: improved thermal properties of enamel.

8 cl, 6 tbl

FIELD: polyvinyl chloride-based plastisol for venturi chassis protective coats.

SUBSTANCE: claimed plastisol contains polyvinyl chloride, di(2-ethylhexyl)-phthalate; calcium stearate; plasticizer (e.g. product on the base of dioxane alcohols and high-boling ethers thereof); filler (e.g. honey); diluent (e.g. C14-α-olefins); polyamide resin; triethylene tetraamine; diethylene glycol; aerosil; calcium oxide. Plastisol of present invention has increased failure elongation by 2-3 times, tearing strength by 20-25 %, solid residual by 8 %, and decreased component mixing time by 2 times or more.

EFFECT: plastisols for protective coating with improved physico-mechanical characteristic; reduced effort.

1 tbl

Up!