Anti-corrosion primer composition
SUBSTANCE: composition contains the following, wt %: alkyde primer 90-98, organosilicon amide of perfluorocarboxylic acid of formula C3F7OCF(CF3)CF2OCF(CF3)CONH(CH2)3Si(OC2H5)3 1-5 and 1-5 product of reaction of boric acid, diethanolamine and fatty acid of plant oil. The fatty acid of plant oil is selected from oleic acid, linoleic acid and linolenic acid, in molar ratio of 1:4:2, respectively.
EFFECT: invention enables to obtain anticorrosion coatings with good physical-mechanical and water-, oil- and gasoline-resistant properties.
3 tbl, 5 ex
The invention relates to corrosion protection of metals with coatings based on alkyd resins and can be used to produce coatings on the parts and Assembly units of engineering products, particularly agricultural machinery.
Known anticorrosive primer composition containing alkyd glyptal primer and pre-filtered waste polyvinylchloride (PVC) plastisol with the degree of dispersion of 120-160 µm (SU 1758057 A1, CL 09D 167/08, 5/08, 30.08.1992).
A disadvantage of the known primer is that obtained on its basis coatings have relatively low anti-corrosion, water-, oil-, benzoctamine properties. In addition, waste PVC plastisol are of variable composition, which does not allow to obtain a product of standard quality.
The closest analogue of the proposed technical solution is the anticorrosive primer composition based alkyd primer and nitrogen-containing corrosion inhibitor is a salt of a primary amine fraction C10-C16and concentrate low molecular weight fatty acid fraction C1-C4(SU 1815982 A1, CL 09D 167/08, 5/08, 27.08.1995).
The disadvantage of this composition are not sufficiently high physical-mechanical properties (hardness, strength of the film under tension), as well as the aslo-, the gasoline obtained coverage.
The technical result of the invention is the improvement of physico-mechanical and protective properties of the primer coating.
This result is achieved by the fact that the anticorrosive primer composition based alkyd primer and nitrogen-containing corrosion inhibitor further comprises silicon amide perfluoroine carbonic acid of the formula C3F7OCF(CF3CF2OCF(CF3)CONH(CH2)3Si(OC2H5)3,
and as a nitrogen-containing corrosion inhibitor contains the product of the interaction of boric acid, diethanolamine and fatty acids of vegetable oils selected from the group of: oleic, linoleic, linolenic, a molar ratio of 1:4:2 respectively in the following ratio, wt.%:
|Specified organosilicon amide|
|perfluoroine carbonic acid||1-5|
|Specified product interaction||1-5|
A distinctive feature of the proposed primer composition is that when entered and it organosilicon amide perfluoroine carbonic acid of the above formula and the product of the interaction of boric acid, diethanolamine (deja) and fatty acids of vegetable oils selected from the group of: oleic, linoleic, linolenic, a molar ratio of 1:4:2 occurs synergistic effect of increasing the physico-mechanical and corrosion properties as well as water-, oil-, benzothioate received coverage.
Introduction silicon amide perfluoroine carbonic acid and the product of the interaction of less than 1 wt.% each is not possible to obtain a synergistic effect on the improvement of physico-mechanical and protective properties of the coating. Introduction each of them more than 5 wt.% impractical, so as to further enhance the effect does not occur.
As alkyd primer composition contains glyptal primer GF-021 (GOST 25129-82), GF-031, GF-032 (TU 6-10-698), GF-0119 (GOST 23343-78), GF-0163 (OST 6-10-409), GF-017 (OST 6-10-428), etc. or pentaftalevym primer PF-0244 (TU 2312-284-21743165), PF-0142 (TU 6-10-1698), PF-0294 (TU 2312-284-21743165) and other
As fatty acids of vegetable oils upon receipt of the product of the interaction using oleic, linoleic or linolenic acid. Distinguish them from vegetable oils by cleavage of triglycerides, for example by saponification of the oil with alkali, followed by processing the resulting soap mineral acid for separation of free fatty acids. The mixture of acids is divided into individual acid by distillation and Yes inasa fractionated crystallization from solution (Raw materials and intermediates for paint materials: reference manual./ Ed. Mol. - M.: Chemistry, 1978. - S, 234).
The method of obtaining the product of the interaction is as follows.
In a reactor equipped with a mixer nozzle Dean-stark, reflux condenser and thermometer, download fatty acid vegetable oils and deja. The reaction mass is heated under stirring up to 90-100°C., and then injected boric acid and raise the temperature of the reaction mixture up to 180-200°C., maintaining it at this temperature for 3.0 to 3.5 h until a homogeneous mass with amine number of 90-100 mg HCl/molinee the ratio of boric acid: deja: the fatty acid is 1:4:2.
The resulting product is an oily viscous brown liquid. It is soluble in mineral oils and organic solvents and has the following characteristics:
The kinematic viscosity at 100°C, cSt not more than 65,0.
Amine number (mg HCl/ g - 90-100;
Water content, % not more than 0,5;
Ash content, % - no;
The flash point in open crucible °C not lower than 200.
Silicon amide perfluoroine carbonic acid (CAPF) is obtained by reaction of interaction of the compounds of formula C3F7OCF(CF3CF2OCF(CF3)COOCH3and γ-aminopropyltriethoxysilane.
In a flask with stirrer, dropping funnel and reflux condenser are placed 102 g (0.2 mol) C3F7OCF(CF3)C 2OCF(CF3)COOCH3and give 46.2 g (of 0.21 mol) NH2(CH2)3Si(OC2H5)3. The contents stirred at room temperature for 2 hours to obtain a homogeneous mixture, which is subjected to rectification, allocating a fraction with TKip=140-144°C/1 mm Hg, yield 98%.
According to NMR data1H and19F the compound has the structure With the3F7OF(CF3)CF2OF(CF3)N(CH2)3Si(OS2H5)3the refractive index nD20=1,3550, the density of d420=1,4248 g/cm3.
Elemental analysis of C18H22NF17SiO4.
Calculated, %: 32,33; N - 3,29; N - 2,09; F - 48,35; Si - 4,34; - 9,58.
Found, %: C - 32,05, 32,37; N - 3,32, 3,25; N - 2,12, 2,04; F - 48,45, 48,24; Si - 4,28, or 4.31; oxygen is not defined.
The NMR spectra of the synthesized compounds were removed on the RF as-200 firm "Brooker". External standards:
hexamethyldisiloxane for protons (operating frequency 200 MHz) and Fl3for fluorine atoms (operating frequency 188 MHz).
An NMR spectrum1H: triplet 7,28 ppm (NH); quadruplet of 3.85 ppm (CH2CH3), the triplet to 1.21 ppm (och2CH3three multiplet at 1,73, 1,11 and 0.64 ppm belong to the group (-CH2CH2CH2-).
An NMR spectrum19F: the signals in the field...-81 -83 ppm characteristic for groups of CF3and OCF2 ; -130,78 ppm - (CF3CF2CF2); -132,9 ppm - [CF(CF3)-C=O]; -145,7 ppm - [CF(CF3)CF2].
Technology of preparation of the proposed primer composition is as follows.
In the mixer pour alkyd primer in the number of 90-98 wt.%, in which with constant stirring consistently impose on 1-5 wt.% product interaction and CAPF. The composition is stirred for 20-30 minutes before applying diluted with solvent to a viscosity depending on the type of application.
For comparative tests of the proposed primer composition, the primer of the prototype and coating systems on their basis were applied to the plates of steel 08KP size 70×150 mm, prepared in accordance with the requirements of GOST 8832-76. The primer coating was dried at 110°C for 35 minutes
The compositions proposed priming compositions shown in table 1.
Glyptal primer GF-0119 represents the variance of the red micaceous iron pigment, tetrachromate zinc, chromium phosphate, calcium chromate, zinc white and the micro-talc in glyptal varnish with the addition of desiccant LCD 1, the flotation reagent of oxala T-80 and xylene (SU 1815982, 1995; Rosenfeld, I., Rubinstein FI anti-Corrosion primer and inhibited paintwork. - M.: Chemistry, 1980. - 200 C.).
Indicators of physical-mechanical and protective properties of the coatings obtained on the basis of the proposed priming compositions and the composition of the prototype presented in table 2. The resistance of coatings to the static action of water, oil and gasoline was evaluated according to GOST 9.403-80, method A. the Resistance of coatings to the effects of factors of temperate climate was determined according to GOST 9.401-91.
A synergistic effect of improving the protective properties observed in the system of the coatings with different enamels, for example pentaftalevyh, glyptal, alkyd-acrylic, melamine-alkyd, alkyd-siloxane, silicone, PTFE deposited on a substrate primed with the proposed composition.
Coating systems on the basis of the obtained primer compositions and the composition of the prototype, as well as indicators of their protective properties presented in table 3. Resistance to a cut in the conditions of high temperature and humidity in the presence of sodium chloride was determined according to ISO 4623.
The use of the proposed primer composition will allow you to get anticorrosion coatings with high physical-mechanical and water-, oil-, petrol-resistant properties.
|Components||The content of components in the compositions according to the examples, wt.%|
|Alkyd primer GF-0119 PF-0244||90||94||98||88||99|
|The product of the interaction of boric acid, deja and oleic acid in a molar ratio of 1:4:2||5||6|
|The product of the interaction of boric acid, deja and linoleic acid in a molar ratio of 1:4:2||3|
|The product of the interaction of boric acid, deja and a mixture of linoleic and linolenic acids in a molar ratio of 1:4:2||1||0,5|
|The coating system||The combined coating thickness, microns||Resistance to a cut in the conditions of high temperature (40±5)°C and relative humidity (80±5)°C in the presence of traces of NaCl, h|
|Two coats of enamel PF-115 primer on the composition of the prototype||50-60||350|
|Two coats of enamel PF-115 on the proposed primer composition||50-60||450|
|Two coats of enamel SA-182 primer on the composition of the prototype||50-60||380|
|Two coats of enamel SA-182 primer on the proposed composition||50-60||480|
|Two of the Loya enamel ML-152 to a primer composition for prototype||50-60||390|
|Two coats of enamel ML-152 on the proposed primer composition||50-60||500|
Anticorrosive primer composition based alkyd primer and nitrogen-containing corrosion inhibitor, characterized in that it further comprises a silicon amide perfluoroine carbonic acid of the formula C3F7OF(CF3)CF2OF(CF3)N(CH2)3Si(OS2H5)3and as a nitrogen-containing corrosion inhibitor contains the product of the interaction of boric acid, diethanolamine and fatty acids of vegetable oils selected from the group of: oleic, linoleic, linolenic, a molar ratio of 1:4:2 respectively in the following ratio, wt.%:
|Specified organosilicon amide|
|perfluoroine carbonic acid||1-5|
|Specified product interaction||1-5|
SUBSTANCE: present invention relates to a single-component primer composition for substrates made from glass and/or plastic, having setting time of at least 1 month. Said composition includes: a base primer composition including (a) an isocyanate functional prepolymer derived from the reaction of an aliphatic polyisocyanate and a polyol, and which is partially reacted with an amino group of a secondary aminosilane, wherein the aminosilane includes two or three methoxy groups bound to a silicon atom, two or three ethoxy groups bound to a silicon atom, or a combination thereof; (b) an isocyanate functional prepolymer with an isocyanate content greater than 1%, which is the reaction product of an aromatic polyisocyanate and a polyol of Mn>300; and (c) at least one solvent for the components (a) and (b); and an ingredient including an oxazolidine ring or derivative thereof; a second adduct (i) of an aromatic polyisocyanate and (ii) mercaptosilane, aminosilane or both; a film-forming polymer. The invention also describes glued structure having a glass or plastic panel, containing the said composition, a method of gluing the glass panel to the frame of a vehicle, comprising a step for applying said composition and a glued structure made using said method.
EFFECT: obtaining primer with long setting time, which exhibits excellent stability during storage, during application of which the surface does not swell.
13 cl, 4 tbl
SUBSTANCE: invention relates to undercoat-rust solvents which prevent metal corrosion and are designed for preparing metal surfaces for painting without removal of corrosion products first and can be used, for instance for treating large structures made from low-carbon steel: bridges, electric power pylons, external and internal surfaces of carriages designed for transporting aggressive material, in particular mineral fertilisers in mildly cold and wet climatic conditions. The undercoat-rust solvent contains foamed polystyrene, potassium ferrocyanide (yellow prussiate of potash), orthophosphoric acid (70%), butylacetate as a solvent and azimido-benzene as a corrosion inhibitor.
EFFECT: obtaining a composition of an undercoat-rust solvent with optimum viscosity, flow behaviour, shorter drying period of the coating, formation of a protective film on the metal surface which prevents further corrosion of the metal, as well as improved physical and mechanical properties of the coating and increased corrosion resistance of the treated objects in the said aggressive media and improved sanitary-hygienic labour conditions.
FIELD: construction industry.
SUBSTANCE: invention refers to corrosion-resistant filler on the basis of lignified wastes of plant raw material, which is included in lacquer coatings and used for protection of metal surfaces against corrosion. Filler includes base made from lignified wastes of plant raw material crushed till powder is obtained, and amine-bearing addition. As lignified wastes of plant raw material, there used are fruit kernels (apricots, peaches, cherries, plums) and/or shells of nuts (walnuts, almond nuts, pistaches, coconuts, pine nuts, peanuts) or their composition with kernels of berries (grape, pomegranate, cornel), which are crushed to 5-40 mcm particle size. As amine-bearing addition, there used is monoethanolamine or triethanolamine.
EFFECT: filler has high corrosion-resisting properties and properties of rust solvent.
7 cl, 3 tbl
SUBSTANCE: invention concerns method of protection and recovery of corroded metal surfaces operating in abrasive wear conditions and aggressive media, e.g. in fertiliser transportation, and can be applied in power-producing, chemical and mining industry for rusted equipment repair. Method involves application of primer layer on metal surface with further drying till aftertack, insulation layer with further drying till aftertack, and external layer with further drying to complete hardening. Primer layer is made of composition including the following components, wt %: 20.0-30.0 of epoxy diane resin with epoxy equivalent weight of 450-500, 15.0-25.0 of Versamid 115 polyamide solidifier, 12.0-25.0 of pigments, 12.0-25.0 of fillers, 2.0-5.0 of amine-containing Cardolite NC 562 solidifier based on 3-n pentadecanylphenol, the rest is organic solvents. Insulation layer is made of composition including the following components, wt %: 20.0-35.0 of epoxy diane resin with epoxy equivalent weight of 450-500, 15.0-30.0 of Versamid 115 polyamide solidifier, 5.0-10.0 of fillers, 10.0-50.0 of micaceous iron ore, 2.0-5.0 of amine-containing Cardolite NC 562 solidifier based on 3-n pentadecanylphenol, 0.8-1.2 of structurising additive, the rest is organic solvents. External layer is made of composition including the following components, wt %: 20.0-40.0 of acrylic or polyether hydroxyl-containing resin, 11.0-22.0 of aliphatic isocyanate solidifier, 10.0-20.0 of pigments, 10.0-40.0 of micaceous iron ore, 5.0-10.0 of fillers, 0.2-0.6 of polysiloxane modified organically, 0.8-1.2 of structurising additive, 0.6-2.4 of aluminum powder, the rest is organic solvents. Composition of external layer includes additionally Metatin Catalyst tin dibutyllaurate in amount of 0.05-0.5 wt % as drying accelerator.
EFFECT: enhanced corrosion resistance of coating.
cl, tbl, 2 ex
SUBSTANCE: invention concerns antirust modificating coating obtained from composition of (mass %): orthophosphoric acid -25.0-40.0; graphite "ГЭ-3" - 12.0-30.0; acryl dispersion Diakam-11 -30.0-50.0; auxiliary substance "ОП-10" - 0.25-2.5; industrial flaxseed oil - 2.0-10.0; concrepol "B" based on water solution of poly-N-vinylpyrrolidone - 0.2-2.0.
EFFECT: application at temperature below zero possible; faster drying; wide range of storage temperature; longer storage without exfoliation and wider range of maintenance temperatures for a building covered with this coating.
FIELD: protecting materials.
SUBSTANCE: invention relates to priming compositions used for anticorrosive covers applied on surface of mainly ferrous metals in machine engineering, and woody and other materials. The priming composition comprises lacquer GF-01, red pigment, siccative, solvent, chalk of sort M-5 and lecithin as a disperser, siccative NF-1 as a siccative, and slime after dry scrubbing in electric steel melting production of the following chemical composition, wt.-%: SiO2, 7.76; phosphorus (P), 0.041; chrome (Cr) total, 1.0; Al2O3, 0.93; TiO2, 0.099; MnO, 2.29; CaO, 21.3; MgO, 24.5; FeO, 3.91; Fe2O3, 32.02; CaF2, 5.26; CaO (incompletely burned material), 0.89 in the following granulometric composition of slime, %: below 20 mcm, 15; from 20 to 25 mcm, 60, and from 25 to 100 mcm, 25. Invention provides decreasing cost and enhancing exploitation parameters of the priming in coating the broad spectrum of surfaces in machine engineering and building.
EFFECT: improved and valuable properties of priming composition.
FIELD: priming compositions for protection of metal surfaces working under atmospheric conditions against corrosion; application of primers and coats.
SUBSTANCE: proposed primer-enamel paint includes the following components, mass-%: 40.0-60.0 of epoxy diane resin,; 5.0-15.0 of 50-% polyvinyl acetate dispersion and 0.2-2.0 of synthetic oligopiperylene rubber used as film-forming agents, 0.03-0.1 of polyoxyethylene alkyl phenol ester used as surfactant; 2.0-5.0 of chromium (III) oxide, as well as 2.0-5.0 of aluminum hydroxide and 2.0-5.0 of cardinal red used as anti-corrosion pigments, 8.0-12.0 of polyethylene polyamine used as hardening agent, 0.3-0.7 of dibutyl phthalate used as plasticizing agent, 1.0-10.0 of butyl cellosolve used as cosolvent, 0.01-1.0 of orhto-phosphoric acid used as modifying additive, water, up to 100.
EFFECT: improved quality of coat; enhanced resistance to oils, gasoline, lubricating and cooling fluids and aggressive media.
2 tbl, 16 ex
FIELD: chemical industry; mechanical engineering; extractive industry; heat and power industry; other industries; methods of protection and recovery of the of the corroded metallic surfaces.
SUBSTANCE: the invention is pertaining to the method of protection and recovery of the corroded metallic surfaces working in conditions of the abrasive wear, action of the aggressive mediums, for example, at transportation of the fertilizers, in the heat and power industry, chemical industry and the extractive industry at the repairs of the rust through equipment. The method provides, that at first they apply on the metallic surface of the priming coating based on the composition containing the following components (in mass. %): 20.0-30.0 - the epoxy dian resin with the epoxy reacting weight of 450-500, the curing agent, 12.0-25.0 - pigments, 12.0-25.0 - fillers, 20.0-30.0 - polyamide curing agent Versamid 115, the rest - organic solvents, with the subsequent drying "up to detachment". After that they apply the second insulating layer having the following composition (in mass %): 20.0-35.0 - of the epoxy dian resin with the epoxy reacting weight of 450-500, 5.0-10.0 - pigments, 5.0-12.0 -fillers, 20.0-35.0 - polyamide curing agents Versamid 115, 10.0-30.0 - micaceous iron oxides, the rest - the organic dissolvents, with the subsequent "up to detachment". After that they apply the third outer layer from the composition containing the following components (in mass %): 20.0-40.0 - the acrylic or polyester hydroxyl-containing resin used as the binder, 10.0-20.0 - pigments, 5.0-10.0 - fillers, 11.0-22.0 - the curing agent - aliphatic polyisocyanate, 0.1-0.5 - the organically modified polysiloxane, the rest - the organic solvents, further the product is dried up to the complete solidification. The invention allows to increase the corrosion resistance of the coating.
EFFECT: the invention ensures the increased corrosion resistance of the coating.
1 tbl, 2 ex
FIELD: paint and varnish industry, anti-corrosive agents.
SUBSTANCE: invention relates to corrosion modifying agents used for covering metallic surfaces without their preliminary cleansing from corrosion products. The corrosion modifying agent comprises the following components, wt.-%: hydrolysis lignin, 19-23; oil as by-side product in caprolactam manufacturing, 5-10; thermic ortho-phosphoric acid in the concentration 70%, 17-26, and water, balance. Invention provides preparing a composition transforming rust corrosion with layer thickness up to 160 mcm that provides enhancing adhesion of applied paint and varnish materials after treatment with the proposed modifying agent significantly.
EFFECT: improved and valuable properties of agent.
FIELD: paint and varnish industry.
SUBSTANCE: invention relates to rust modifying agents that use used for coating rust metallic surfaces without their preliminary cleansing from rust, among them, with mazut and oily pollutions and can be exploited in the range of temperatures from -50°C to +500°C. Proposed rust transformer comprises the following components, wt.-%: ortho-phosphoric acid, 37.0-51.0; graphite, 24.0-34.0; concrepol B, 0.3-1.2; lignosulfonates, 0.5-1.0, and water, 18-27. Invention provides enhancing effectiveness and prevention of separating into layers of the transformer for liquid and solid phase at prolonged storage.
EFFECT: improved and valuable properties of transformer.
SUBSTANCE: base coat contains an acrylic dispersion, anticorrosion pigments and filler materials, a dispersing agent, a thickener and water. In order to improve anticorrosion properties of the coating, the base coat contains a water-soluble corrosion inhibitor mixture of potassium octadecanoate, tripotassium phosphate, 2,2',2"-nitrilotriethanol and a surfactant - technical mixture of polyethyleneglycol ethers of monoalkylphenols, which improves wettability and adhesion of the paint coat to metal surfaces.
EFFECT: high environmental safety during painting and good anticorrosion properties of the coating when used in aggressive atmospheric conditions.
SUBSTANCE: invention relates to sol for applying sol-gel coating onto a surface. The sol contains at least one organometallic compound of zirconium, aluminium or titanium, at least one organosilane compound, at least one compound selected from acids, bases, glycols and ethoxy ethanol as a catalyst. The sol also contains demineralised or distilled water. The total amount of at least one organometallic compound of zirconium, aluminium or titanium and at least one organosilane compound is greater than 50%. The sol also contains less than 5% harmless organic solvent such as non-toxic aliphatic alcohols. The sol also contains at least one surfactant and organic binder. The invention also relates to a set comprising a first container which contains a first portion in form of liquid which contains at least one organometallic compound of zirconium, aluminium or titanium, at least one compound selected from acids, bases, glycols and ethoxy ethanol, and a second container which contains a second portion in form of a liquid which contains an organosilane compound. The sol-gel layer is obtained by depositing the said sol onto a substrate. The layer is dried to obtain a sol-gel layer on the substrate. The sol-gel layer is used to endow the surface of the substrate with corrosion resistance. The surface of the substrate can have one or more sol-gel layers.
EFFECT: method enables obtaining the desired coating thickness without deterioration of anti-corrosive properties, as well as obtaining a coating with uniform thickness without overlapping.
65 cl, 2 ex
SUBSTANCE: invention relates to a method of coating articles made from valve metals which are used as component parts of turbomolecular pumps. An article made from a valve metal selected from aluminium, magnesium, titanium, niobium and/or zirconium and alloys thereof, is coated with an oxide ceramic layer formed from metal using a plasma-chemical method. The ceramic layer has a barrier inter-phase layer adjoining the metal, whose surface is coated with a polymer formed from monomers in form of dimers or halogenated dimers of general formula I where R1 denotes one or more hydrogens or halogens; each R2 denotes hydrogen or halogen; and each R3 denotes a xylylene residue with formation of a dimeric structure. Said monomers are incorporated into a capillary system and then polymerised on the surface of the oxide ceramic layer in a vacuum.
EFFECT: invention enables to obtain coatings with uniform surface porosity and high resistance to aggressive and corrosive media.
10 cl, 1 ex
SUBSTANCE: invention relates to an aqueous anti-corrosion agent for coating metal substrates. The aqueous anti-corrosion agent contains a water-dispersed and/or water-soluble polymerisation product P with covalently bonded ligands A, which form chelating compounds with metal ions freed during corrosion of the substrate and/or surface of the substrate, as well as with cross-linked functional groups B, which can form covalent bonds between themselves, other additional functional groups B' of the polymerisation product P and/or with other functional groups B and/or B' on cross-linking agents V. The polymerisation product P has a polymer base in form of one or more structural elements, selected from a group of polyesters, polyacrylates, polyurethanes, polyolefins, polyatomic alcohols, polyvinyl esters, polyvinylamides and polyalkylene amine. Groups B and B' are (meth)acrylate and ethylacrylate groups, ether and ester vinyl groups, crotonate and cinnamate groups, allyl groups etc. Ligands A are selected from a group comprising urea, amines, amides, imines, imides, pyridines, organosulphur compounds, organophosphorus compounds, organoboron compounds, oximes, acetylacetonates, polyatomic alcohols, acids, phytic acids, acetylenes and/or carbenes. The invention also describes a single- and a two-step method of treating metal substrates using the aqueous anti-corrosion agent described above.
EFFECT: coating provides high anti-corrosion protection of metal substrates.
11 cl, 1 tbl, 6 ex
SUBSTANCE: invention relates to the paint industry, particularly to aqueous dispersions based on vinylidene fluoride for obtaining protective paints. The vinylidene fluoride-based aqueous dispersions contain polymer particles with average size of 0.260-0.3 micrometres, obtained via polymerisation of vinylidene fluoride-based emulsions, optionally in the presence of one or more fluorinated copolymers, in the presence of a bifunctional surfactant of formula: A - Rf - B (I), where: A = -O-CFX-COOM; B = -CFX-COOM; X = F, CF3; M=NH4 alkali metal, H; Rf denotes a straight or branched perfluorinated chain; or a (per)fluoropolyester chain.The average molecular weight (I) is in the range 650-800. Described also is use of vinylidene fluoride-based aqueous dispersions to produce water-based protective paints and protective paint for metal bases, obtained using vinylidene fluoride-based aqueous dispersions; use of aqueous dispersions of polymers based on vinylidene fluoride to obtain powder used in preparing protective paints for powder coatings.
EFFECT: coatings obtained using paints which contain vinylidene fluoride-based aqueous dispersions have good physical and mechanical properties.
17 cl, 5 tbl, 11 ex, 8 dwg
SUBSTANCE: invention relates to chemical industry and specifically to obtaining composite anticorrosion coating materials meant for protecting rusty metal surfaces from corrosion, applied directly onto the rusty metal surface, and obtaining a base - sorption materials from products of processing natural organic compounds of plant origin. The method of obtaining a base for composite anticorrosion coating material involves using cut high density wood as raw material which undergoes hydrolysis with 0.5-0.8% sulphuric acid solution, washing and pressing the hydrolysate, its ammonolysis which is carried out with a mixture containing ammounium hydroxide, sodium citrate, sodium hydroxide, citric acid sodium, water, repeated washing and pressing the ammoniated product, separation into fractions, drying the product to 5-15% moisture content. The product is activated in the presence of ammonium hydroxide, amine additives, catalyst and water, followed by grinding and activation with a composition containing ammonium hydroxide, amine additives, catalysts and water at normal pressure and temperature of 100-150°C until achieving 5-15% moisture content of the product and particle size of 1-10 mcm. The method of obtaining composite anticorrosion coating material involves preparation of a mixture of binding substance and a base for composite anticorrosion coating material, mechanical activation and dispersion of the composition with filler pigments, treatment in the chamber of an apparatus with a vortex layer of ferromagnetic particles, colouring and dilution with diluents-solvents. The material is taken for bottling and packaging.
EFFECT: method enables to shorten the time for obtaining the material and power consumption, while obtaining high-quality anticorrosion coating complex material.
SUBSTANCE: in compliance with proposed method, metal is cleaned, subjected to conversion treatment by means of contact with conversion solution containing at least one simple or complex salt of at least one metal. Note here that conversion layer is formed that contains 0.01 to 0.07 mmole/m2 of metal M. If required, is it rinsed by water and/or dried, brought in contact with coating material containing c1) from 5 to 30 wt % of one or several cross-linking burn-in urethane resins with blocked isocyanate groups. Note also that not over 5% of available carbon atoms exist in aromatic and/or unsaturated groups, c2) from 10 to 30 wt % of one or several cross-linking agents for component (c1, c3) from 4 to 30 wt % of one or several antirust pigments, the rest making one or several organic solvents and/or water, and, if required, other auxiliary substances. Produced coat is hardened by heating substrate to at least 100°C.
EFFECT: simplified procedure.
10 cl, 2 tbl
SUBSTANCE: composition contains epoxy-diane resin modified with copolymer of styrene, methylmethacrylate and methacrylic acid BMS-86, dioctylephthalate, wollastonite and microcalcite, technical carbon, polyethylene polyamine and organic solvent.
EFFECT: coating has high adhesion to metal surfaces 93-97 N/cm, high shear strength 183-189 N/cm and high water-absorption 1,75 - 2% at 20°C.
2 tbl, 3 ex
SUBSTANCE: invention relates to coating materials and can be used in anticorrosion fireproof bioresistant coating of different materials. The enamel is a set including the following (wt %): a semi-finished enamel product from brominated epoxy resin in an organic solvent in which filler materials are dispersed 8.52-13.5, pigments 18.27-25.29 and a rheological agent 1.7-2.7, as well as an amine type hardener. The resin base is synthesised from epoxy resin and tetrabromodiane in molar ratio of 3:1 and temperature 130-150°C in the presence of a catalyst - an oligomer of aromatically conjugated hydroxyphenylene in amount of 0.65-0.75 moles, which does not contain amines and is obtained via oxidative condensation of alkyl resorcin at 250°C.
EFFECT: resin base has long working life, good technological characteristics; the coating is fungus-resistant, has self-extinction after coming out of a gas burner flame UL - 94, V0 - 0.
6 cl, 7 tbl, 3 ex
SUBSTANCE: heat resistant coating composition contains polyorganosiloxane resin, acrylic resin - isobutylmethacrylate polymer, heat resistant pigment, ground mica and/or porous silicate as an aggregate, a rheological additive - bentonite clay, pentaphtol lacquer, thickener - pangel or tixogel and an organic solvent. The porous silicate can be pearlite or kieselguhr and the heat resistant pigment can be aluminium powder or heat resistant pigments of different colours.
EFFECT: coatings obtained using the disclosed composition have good physical and mechanical properties.
3 cl, 3 tbl
SUBSTANCE: invention is used in shipbuilding, construction works in shafts, for repair works on metallurgical factories, for painting concrete and plastered structures, for painting metal structures, wooden structures and slate roofing. The paint contains components in the following ratio in wt %: film-forming agent 50-90, titanium dioxide and/or chalk 0.1-32.0, cement and/or cement dust 0.1-30.0, siccative 0.5-5.0, microtalc and/or micromica or sand and/or lime or lime milk and/or flue ash and/or microcalcium and/or sulphanol and/or iron oxide - the rest. The film-forming agent contains components in the following ratio in wt %: pentaphthalate and/or glyphtal lacquer or mixture thereof with nitrocellulose and/or perchlorovinyl and/or ethylcellulose and/or coal-tar varnish 1-55.0, drying oil or masut or bitumen 1-45.0, bustilat and/or liquid glass 1-10.0, water and/or nefras and/or solvent and/or benzine and/or solvents 647, 646, 650, 651 3-20.0, sulphanol or butyldiglycol - the rest.
EFFECT: paint film has good adhesion to surfaces, coating does not crack during bending and sharp change in temperature, paint film has high resistance to water, acid, alkali, benzene, the paint can be applied on a rusty, oily or wet surface, does not form a dried up film during storage and is environmentally safe.
3 cl, 4 tbl, 70 ex