(57) Abstract:The invention relates to coatings industry, namely, modifiers, rust, used for coating metal surfaces without cleaning them from rust. An object of the invention is to obtain a modifier rust on the basis of activated lignin, which would ensure a high complexing capacity to ions of iron and other metals, would have high anti-corrosion performance. Modifier rust contains activated lignin obtained by activation in a ceramic vessel ceramic balls hydrolytic lignin, treated with a modifying composition comprising aminecontaining additive, water, optionally containing ammonia, and as aminecontaining supplements use organic aliphatic amerosport, in the following ratio, wt.%: lignin 77,0-87,0, aminecontaining additive - 5,5-10,0, ammonia - 0,5-1,0, water - the rest, and the modifier rust further comprises iron oxide and has the following quantitative composition, wt. %: iron oxide - 1,0-2,0 and activated lignin - rest. table 2. Izaberete metallicheskih surfaces without cleaning them from rust.Known modifier of rust, including the activated lignin (lignin treated with 25% solution of ammonium hydroxide in the presence of translesanas ammonium phosphate), hydrocellulose, tartaric acid, natural drying oil, oil, licorice root extract, ethyl silicate and water (A. C. the USSR 841339, CL 09 D 5/12, 1960).The disadvantage of this modifier rust is that it is not enough to quickly and efficiently converts rust.Also known powder rust Converter, including lignin, treated with a modifying composition containing aminecontaining additive and water (CPD-1 TU 04.96.74. 5-87, Ukraine - prototype).The disadvantage of this modifier rust is that it is not enough to quickly and efficiently converts rust.An object of the invention is to obtain a modifier rust on the basis of activated lignin, which would ensure a high complexing capacity to ions of iron and other metals, would have high anti-corrosion performance.The technical problem is achieved by the fact. what modifier rust, including lignin, obrabotannoy activating in ceramic containers ceramic balls hydrolytic lignin, processed modifying composition, optionally containing ammonia, and optionally contains iron oxide, and as aminecontaining additives used organic aliphatic amerosport, while the activated lignin has the following quantitative composition, wt.%
Lignin - 77,0-87,0
Aminecontaining additive is an organic aliphatic amerosport - 5,5-10,0
Ammonia - 0,5-1,0
Water - the Rest
and modifier rust has the following quantitative composition, wt.%:
Iron oxide - 1,0-2,0
The activated lignin - Rest
The invention has the following differences from the prototype:
the modifier rust contains activated lignin obtained by activation in a ceramic vessel ceramic balls hydrolytic lignin, treated with a modifying composition, optionally containing ammonia;
the modifier rust contains iron oxide;
as aminecontaining additives used organic aliphatic amerosport;
- activated lignin has the following quantitative composition, wt.%:
Lignin - 77,0-87,0
Aminecontaining additive is an organic aliphatic aminny composition, wt.%:
Iron oxide - 1,0-2,0
The activated lignin - Rest
This will allow you to get the modifier rust on the basis of activated lignin, which will provide high complexing capacity to ions of iron and other metals, has a high anti-corrosion performance.Viewed in us patent information the Fund has not found similar technical solutions and technical solutions with these differences.The claimed technical solution is applicable and will be implemented at the industrial enterprises in 2000For manufacturing modifier rust took the following components:
Aminecontaining additive, such as monoethanolamine GOST 19234-87 E;
Ammonia GOST standard 9-92;
Iron oxide (Fe2ABOUT3or Fe3ABOUT4) GOST 26318.3-84.Modifier rust received and used as follows.EXAMPLE 1.First got activated lignin by imposing mechanical and chemical loads on lignin, which was accompanied by its destruction with increased mechanical activity dispersible material, which increased the efficiency of all subsequent processan any moisture in amount of 77.0 wt.% served in a ceramic container and activated ceramic balls, when this was added the modifier composition containing the estimated number of aminecontaining supplements organic aliphatic amerosport (5.5 wt.%), ammonia (0.5%) and water (the rest). Activation was carried out at normal temperature and atmospheric pressure. After drying up to 15-17% residual moisture were crushed to particle size of 5-30 μm.The activated lignin (lignin ACC) is characterized by the following functional groups:
OCH3,% - 4,0-5,3
HE Society.,% - 20,2-21,7
COOH.% - 16,0-17,2
NH2Gen.,% - 8,3-9,1
Modifier rust-based powder activated lignin switchs could feed-ACC was prepared as follows. Lignin activated ACC, containing not more than 15-17% moisture was mixed with iron oxide (Fe2ABOUT3and/or Fe3ABOUT4) in an amount of 1 wt. % (lignin activated ACC - else) and dispersively (pereirae) in ceramic containers ceramic balls for 10-12 hours at a speed of rotation of the drum 40 to 60 rpm. Received modifier rust PDP-ACC (1). The number in parentheses indicates the number of completed example.Modifier rust is a fine powder with a particle size of 5-30 μm, dark-max is hanicheskih (well-known) solvents. Water extract gives an alkaline reaction - pH of 7.5-8.5.The resulting modifier rust MCI-ACC (1) used in the manufacture of the priming composition. For this modifier MCI-ACC (1) in an amount of 7.0 wt.% (maybe 5-8 wt.%) added 93 wt.% enamel PF-115. The mixture was thoroughly mixed and applied, for example, manually by brush, carefully rubbing and shading on rusty steel plates Art. 3 with a thick layer of rust thickness of 100-120 μm, was dried and then sprayed the floor is made of 2 layers of enamel PF-115. Drying time at 20oWith was 8-9 hours.After 10 days of exposure, the samples were placed in hygrostat at a temperature of 40-50oC and 100% relative humidity for 30 days. To assess the protective properties of the coatings used a capacitive-resistive method. The essence of the method consists in periodic variation of capacitance and tangent of dielectric loss angle tg dyed samples using the bridge circuit AC. The value "C" is characteristic of the condition of the coating. The defects of the coating film, the discontinuity of the coating leads to an increase in capacity. Improving the quality of the coating is characterized by the increased capacity . The tests were carried out on the bridge variable is after 30 days of testing in 3% aqueous NaCl solution.EXAMPLE 2.Example 2 was performed according to example 1, but changed the proportion participating in this component, receiving modifier rust MCI-ACC (2), and also changed the qualitative composition of the priming composition, which is used obtained in example 2 modifier rust MCI-ACC (2).EXAMPLE 3.Example 3 was performed according to example 1, but changed the proportion participating in this component, receiving modifier rust MCI-ACC (3), and also changed the qualitative composition of the priming composition, which is used obtained in example 3 modifier rust MCI-ACC (3).Table 1 presents examples made in accordance with the invention, compositions of activated lignin based modifier rust and priming compositions obtained by adding custom modifiers rust.Table 2 shows the properties obtained according to the examples of coatings.The technical result of the invention is to obtain a modifier rust on the basis of activated lignin, which provides high complexing capacity to ions of iron and other metallogeny lignin, processed modifying composition containing aminecontaining additive and water, characterized in that it contains activated lignin obtained by activation in a ceramic vessel ceramic balls hydrolytic lignin, treated with a modifying composition, optionally containing ammonia, and as aminecontaining supplements use organic aliphatic amerosport in the following ratio of components of the modifier composition, wt. %:
Lignin - 77,0-87,0
Aminecontaining additive - 5,5-10,0
Ammonia - 0,5-1,0
Water - the Rest
and modifier rust further comprises iron oxide and has the following quantitative composition, wt. %:
Iron oxide - 1,0-2,0,
The activated lignin - Rest
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.
FIELD: paint and varnish industry.
SUBSTANCE: invention relates to rust modifying agents that are used for applying on corroded metal surfaces. The described anticorrosive modifying coating comprises the following components, weight %: acrylic dispersion "Diakam-11" as a film-forming agent, 36.0-48.0; graphite GE-3 as a pigment and filling agent, 14.0-23.0; 8-oxyquinoline as a chelating agent, 0.5-1.8; ortho-phosphoric acid as a modifying additive, 25.0-35.0; polyethylsiloxane liquid PES-5, 5.0-10.0; accessory agent OP-10, 0.2-0.5, and concrepol AD-1 based on poly-N-vinylpyrrolidone aqueous solution, 0.5-1.5. Invention provides the possibility for effective conversion of rust to neutral undercoat, prolonged exploitation time being both in corrosive and water-saturated media and under conditions of open atmosphere in the range of temperatures from -70°C to +200°C and without additional overcoating with paint and varnish materials and without applying on mazut-coated and oiled metallic surfaces without their degreasing.
EFFECT: improved and valuable properties of coating.
FIELD: protective materials.
SUBSTANCE: invention relates to a method for preparing priming coat for steel that is designated for assembly and applying upper coat. Steel in grounded with priming coat comprising a silicon dioxide-base binding substance containing silicon dioxide aqueous sol stabilized with aluminum oxide and, optionally, small amount of alkaline metal silicate. Indicated binding agent shows the mole ratio SiO2/M2O = at least 6:1 wherein M means the total amount of alkaline metal ions and ammonium ions. After drying the priming coat up to disappearance of stickiness in weal touch by a finger it is treated optionally with a solution that enhances the strength of the priming coat film.
EFFECT: improved and valuable properties of coat.
12 cl, 7 tbl, 21 ex
FIELD: building materials.
SUBSTANCE: invention relates to a method for preparing an aqueous epoxide corrosion-stable priming used for protection against corrosion and no containing hexavalent chrome compounds. Priming comprises aqueous epoxide compound based on bisphenol A diglycidyl ester, hardening agent and chromate-free pigment inhibiting corrosion. Hardening agent is taken among the group comprising aqueous modified adducts of amines or polyamidoamines decreasing the water content. Chromate-free pigment inhibiting corrosion comprises chromate-free pigment additive inhibiting corrosion that is taken among the group comprising mixtures of cerium molybdate with bismuth vanadate, cerium molybdate with strontium tungstate, cerium phosphate with strontium tungstate, bismuth vanadate with bismuth molybdate and strontium tungstate, and their mixtures also. Pigment-filling agents and hydrophobic hardening agent are added to the priming composite for enhancing waterproofness and corrosion resistance. Invention provides excluding the negative effect of hexavalent chrome on environment objects and human body.
EFFECT: improved and valuable properties of priming.
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.
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: 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: 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: 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.