Anti-corrosion compositions for zinc-containing primer coating, containing full glass spheres and conducting pigment

FIELD: chemistry.

SUBSTANCE: composition comprises a) a binder system selected from epoxy resin binder systems, polysiloxane-based binder systems, polyurethane-based binder systems, cyclized rubber binder systems, and phenoxy resin binder systems, b) zinc particles, c) uncovered hollows glass microspheres, and d) a conductive pigment selected from the group consisting of graphite, carbon black, aluminium-based pigments, black iron oxide pigment, antimony doped tin oxide, mica coated with doped antimony tin oxide, indium tin oxide, carbon nanotubes, fibres based on carbon black, graphite, and any mixture thereof. The said composition further comprises a solvent.

EFFECT: improving the corrosion resistance of metal structures.

17 cl, 9 tbl, 6 ex

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to a film-forming composition intended for application on the outer surface of a building, which contains an agent capable of trapping formaldehyde. The film-forming composition contains a dispersion phase, binder, pigments, filler, additives and an agent capable of trapping formaldehyde, selected from compounds with an active methylene group/groups of one of the following formulae (I)-(IV): Formula , wherein R1 and R2, identical or different, denote a hydrogen atom, a C1-C20 alkyl radical, preferably C1-C6, an amino radical or a radical of formula wherein R4 denotes a or radical, where R5=H or -CH3 and p is an integer from 1 to 6; R3 denotes a hydrogen atom, a C1-C10 alkyl radical, a phenyl radical or a halogen atom, a equals 0 or 1, b equals 0 or 1, n equals 1 or 2; Formula , wherein R6 denotes a cyano radical or a radical, wherein R8 denotes a hydrogen atom, a C1-C20 alkyl radical, preferably C1-C6, or an amino radical, c equals 0 or 1; R7 denotes a hydrogen atom, a C1-C10 alkyl radical, a phenyl radical or a halogen atom; Formula , wherein R9 denotes a -C≡N or -CO-CH3 radical, q is an integer from 1 to 4; Formula wherein A denotes a -(CH2)3- or -C(CH3)2- radical, r equals 0 or 1. The invention also relates to the use of said film-forming composition to reduce the amount of formaldehyde in air inside a building.

EFFECT: reducing the amount of formaldehyde inside buildings.

10 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to dye compositions and improved coatings with low titanium dioxide content. An aqueous coating composition has PVC from 78 to 88% and contains the following, with respect to the total volume of solid substances of the dry coating: a) plugging pigment particles, including: i) 3-10% titanium dioxide, ii) 0-20% hollow polymer particles; b) non-plugging filler particles, including: i) double calcium and magnesium carbonate, and/or ii) calcium carbonate, and/or iii) nepheline syenite, and/or iv) kaolin, where the sum i)+ii)+iii)+iv) ranges from 40% to 80% and iv) ranges from 0% to 20%; c) particles of a polymeric binding substance with Tg calculated using Fox equation of 25-70°C, having an acid number of 15-65 mg KOH/g polymer, where the polymer particles consist of acrylic monomers and optionally include styrene and/or derivatives thereof; d) a dispersant with weight-average molecular weight of at least 3500 Da; e) a volatile coalescing solvent, where the composition does not contain a non-volatile coalescing solvent.

EFFECT: invention enables to prepare a paint composition, having low titanium dioxide content and having good dullness and scratch resistance in a wet state.

19 cl, 1 dwg, 1 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to formaldehyde-free coating compositions. The coatings are used to endow fibrous panels and acoustic panels, such as ceiling tiles, with sag resistance. The composition includes a polyacid copolymer having at least two carboxyl groups, anhydride groups or salts thereof, a compound having a hydroxyl group, a phosphorus-containing catalyst and calcium aluminosilicate powder.

EFFECT: sag resistance, rigidity and strength of the formaldehyde-free coating.

8 cl, 1 dwg, 5 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: claimed invention relates to a coating for sound dampening, in particular deals with a coating composition, a method of the coating application, as well as a base, at least, partially covered with the coating composition. The coating composition includes: (i) water a dispersion of polymer particles; (ii) a compound of polyethercarbamate; (iii) a filling agent and (iv) inorganic microparticles. The material, applied as the component (iii), and the material, applied as the component (iv), are different. After the application of the composition on a substrate and after its hardening, the hardened coating composition is characterised by the loss coefficient for a dampening composite, equal to 0.05 or more, at a frequency from 100 to 6300 Hz and contains a surface, which in fact does not have defects. The hardened coating layer contains not more than one clearance, which resulted from bubbling, on an area of 75 mm2.

EFFECT: invention makes it possible to obtain the defect-free coating with the considerably smaller number of clearances.

22 cl, 3 tbl

FIELD: chemistry.

SUBSTANCE: composition for obtaining coating for reducing mechanical loss of high-speed electric machine rotor relates to hybrid organic-inorganic nanocomposite coatings, capable of reducing mechanical loss of high-speed electric machine rotor in cooling gaseous medium. Composition includes sol with silicate constituent based on tetraethoxysilane or methyltriethoxysilane water-alcohol solution and additionally contains modifying additive in form of compound, possessing pyro- and/or piezoelectric properties with size of particles and their aggregates 50-100 nm, with the following component ratio (wt %): sol with silicate constituent - 96-99; modifying additive - 1-4.

EFFECT: application of methyltriethoxysilane in sol composition provides adhesion with stainless steel without high-temperature processing and 11-12 class of surface roughness; application of tourmaline piezoelectric crystals as modifying additive in form of alcohol suspension or crystal powder provides antifriction properties of coating.

1 dwg, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to composition for superficial processing of surfaces in form of liquid agent for superficial processing, such as UF-solidified filler-containing vanish. Invention also relates to application of said composition for preliminary processing of surfaces and/or their edges of flat-shape elements. Agent for surface processing contains film-forming resin acryl-based composition and filler (3), with said filler including disperse material, selected from common salt, chalk (CaCO3), powder, glass particles or granules. Filler has size of particles smaller than 400 mcm. Agent for surface processing is used mainly for application on chamfers and edges of flat-shape elements from solid wood, laminated wood-based products, such as veneered panels and chipboard panels, panels of medium density and panels from mineral wool and plaster.

EFFECT: preliminary processing of surface with agent makes it possible to create smooth surface, which has good adhesion for the following decoration work, ie prolong service term of instruments, used for the following panel processing.

11 cl, 3 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a composition of coating, hardened at low temperature, which contains film-forming resin, a hardening agent for the film-forming resin, as well as lithium salt, selected from inorganic and organic salts, which has a constant of solubility in water at 25°C in the interval 1×10-11 - 5×10-2 and where lithium salt is present in the coating composition in a quantity of 1040 vol. %, in terms of the sum of non-volatile components of the coating composition. Also described are: the application of the coating composition as an anticorrosion primer coating for substrates from non-ferrous metals, a method of obtaining a corrosion-resistant metal substrate and a substrate, covered with the coating composition.

EFFECT: reduced sensitivity of coatings to osmotic and/or corrosion-induced formation of swellings, good resistance to thread-like corrosion, durability and stability.

16 cl, 31 tbl, 14 ex

Pigment granules // 2530115

FIELD: chemistry.

SUBSTANCE: invention relates to pigment granules comprising one or more flake-like effect pigments, as well as to use thereof for support medium pigmentation, e.g., for powder coatings and particularly plastic, and for preparing concentrated dyes. The pigment granules comprise one or more flake-like effect pigments selected from a group consisting of pearlescent pigments, interference pigments, metal-effect pigments, multilayered pigments having one or more transparent, semi-transparent and/or opaque layers, goniochromatic pigments, holographic pigments, coated or uncoated BiOCL flakes and/or LCP pigments, polymer particles or mixtures of polymer particles, an adhesion accelerator, an antioxidant and optionally common additives. The polymer particles consist of polyolefin particles and have a size of 1-5 mm. The pigment granules are prepared by mixing said components with each other simultaneously or successively.

EFFECT: granules are dustless, are well embedded into a support medium, particularly polyolefin plastic, and also do not exhibit a tendency for dangerous spontaneous heating.

18 cl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to coating composition, method of its preparation, application of said composition, paint, containing said composition, as well as to concrete, wood, paper, metal or cardboard, covered with said composition. Coating composition has pigment volume concentration (PVC) from 5% to critical pigment volume concentration (CPVC) and contains at least one milled natural calcium carbonate (SMMCC), which has volume median particle diameter d50 between 0.05 and 0.3 mcm, and at least one pigment, which has refractive index, larger or equal 2.5.

EFFECT: obtaining coating composition, providing luster and opacity when applied.

17 cl, 1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to process and separation fluid for removal of solid particles from excess spraying fluid formed at painting the parts. In compliance with this process, excess spraying fluid is entrapped by airflow and conveyed to separation surface (42a, 42b) washed by separation fluid whereat at least a portion of solid substances gets into separation fluid, diverted by the latter and removed from the fluid by sedimentation. Used is separation fluid containing degumming medium and carrier fluid. Note here that particles of excessively sprayed lacquer are degummed by said medium.

EFFECT: efficient separation.

22 cl, 7 dwg, 6 ex

FIELD: process engineering.

SUBSTANCE: invention relates to application of conducting surface over the first solar mirror light reflecting coating surface. Note here that solar mirror comprises substrate with first surface and second, opposite surface. Light reflecting coating has second surface opposite the first one. Note here that said second surface is applied over the first one. Proposed method comprises placing the first conducting liquid material above the first zone of light reflecting coating first surface and placing the second conducting liquid material above the second zone of light reflecting coating second surface wherein one of said liquid materials contains the composition of electrodeposited coating. First and second conducting liquid materials are kept spaced apart and with no contact to get third zone of the first surface located between first and second zones as well as for making of electric circuit extending through the first liquid material, third zone of conducting surface and through second liquid material. Then, electric current is fed via said electric circuit to deposit protective coating over the light reflecting coating first surface that contains electrodeposited coating composition. Proposed device comprises coating application structure. Said structure comprises first channel for application of conducting coating to produce the liquid first curtain for coating application. Said structure comprises second channel for application of conducting coating to produce the liquid second curtain for coating application. Third channel serves to receive the first air blade arranged between first and second channels. Fourth conducting channel is designed to get the third liquid curtain for application of coating. Fifth channel is designed to get second air blade arranged between second and fourth channels. Also, this device includes motorised system designed to displace said structure and solar mirror relative to each other and feed system to displace first ion-containing liquid to first and fourth channels and, via the latter, to displace second ion-containing fluid to third channel and there through and for displacement of pressurised air via second and fifth channels. Note here that after activation of said feed system curtain of the first ion-containing liquid via first and fourth channels the curtain of second ion-containing liquid if displaced via second channel while pressurised air flows through third and fifth channels. After actuation of motorised system the portions of light reflecting channel first surface are displaced through the liquid curtain from first channel, pressurised air of third channel, liquid curtain from second channel, air shield of fifth channel and liquid curtain from fourth channel. Note also that pressurised air of third channel maintained first preset spacing at first surface of light reflecting coating between liquid curtains from first and second channels. Note that pressurised air of fifth channel maintains second preset spacing at first surface of light reflecting coasting between liquid curtains from second and fourth channels.

EFFECT: more homogeneous electrodeposited coating.

32 cl, 28 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for obtaining electroconductive coatings on substrates surface. Described is a printing composition for obtaining the electroconductive coatings based on silver particles dispersed in water. The composition contains: a) from 5 to 40 wt.p. of metal silver particles with an effective diameter from 10 to 150 nm, with the silver particles having bimodal distribution of particles by sizes; from 50 to 99.5 wt.p. of water and, if necessary, to 30 wt.p. of a solvent; c) from 0.01 to 15 wt.p. of a dispersing agent; d) from 0 to 5 wt.p of additives; e) from 0 to 5 wt.p. of electroconductive, if necessary, water-soluble, polymers; f) from o.5 to 5 wt.p. of a thickening agent; g) from 30 to 70 wt.p. of silver particles or silver-coated copper particles with an effective diameter from 500 nm to 10 mcm. The composition has a viscosity, at least, 1 Pa·s. Also described is the application of the composition for obtaining the electroconductive coatings, method of obtaining current-conductive paths and a polymer substrate with the electroconductive coating from the claimed composition.

EFFECT: invention provides an effective elctroconductivity of electroconductive structures on thermally stable surfaces with the application of offset printing and screen printing.

15 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of applying a coating composition containing carbon in form of carbon nanotubes, graphenes, fullerenes or mixtures thereof and metal particles on a substrate, followed by treatment under pressure and heat treatment of the coating after application on the substrate. The invention also relates to a substrate obtained using the disclosed method and use thereof as an electrochemical structural element.

EFFECT: invention provides low mechanical wear, low frictional coefficient and good electrical conductivity of the coating.

30 cl, 2 ex, 4 dwg

FIELD: chemistry.

SUBSTANCE: described is an electroconductive thermoplastic material for electrotyping, which contains a binding substance and electroconductive filler, where the binding substance is a mixture of polyethylene wax and paraffin in ratio of 2/1 to 1/3, and the electroconductive filler is graphite, with the following ratio of components, pts.wt: polyethylene wax 10-20, paraffin 10-30, graphite 60-70.

EFFECT: material enables free casting of an original article with electroconductive material when making a mould at low temperature and simplifies the technology of making moulds.

1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to production of articles with a multilayer light-sensitive coating and can be used to make thin-film solar cells and photocatalytic articles. The article has a substrate, e.g. a glass substrate, and a first coating formed on at least part of the substrate. The first coating is multilayered and contains a mixture of oxides including oxides of at least two elements selected from P, Si, Ti, Al and Zr. A functional coating is formed on at least part of the first coating. The functional coating is selected from an electroconductive coating and a light-sensitive coating. In one embodiment of the invention, the functional coating contains tin oxide doped with fluorine. In another embodiment, the functional coating contains titanium dioxide. A glass substrate, for example, is made in order to make a coated article. The first multilayer coating is formed on at least part of the substrate by chemical vapour deposition. The functional coating is formed on at least part of the first coating.

EFFECT: high functionality of the first layer of the article.

14 cl, 5 dwg, 12 tbl, 6 ex

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: preparation method involves applying a solution of discotic precursors onto a substrate, heating the coated substrate in the atmosphere of a protective gas to temperature of 400-2000°C.

EFFECT: invention enables to obtain carbon films with high thermal and chemical stability, an ultra-smooth surface and good adhesion to substrates.

20 cl, 6 dwg, 13 ex

FIELD: chemistry.

SUBSTANCE: electroconductive composition contains the following in wt %: film-forming copolymer 13.0-45.0; graphite powder 15.5-20.0; technical carbon powder (soot) 7.5-40.0; carbonyl iron powder 3.0-4.0; organic solvent - the balance. Graphite powder is used with particle size of 10-30 mcm and technical carbon and carbonyl iron powder is used with particle size of not more than 0.1 times the maximum size of the graphite powder particles. Described is a method of making electroconductive coatings, which involves depositing a dispersed liquid polymerisable electroconductive composition onto a substrate, forming a solid electroconductive coating by depositing several layers of the composition onto the substrate. The final thickness of the electroconductive coating must be at least 10 times greater than the maximum particle size of the graphite. Intermediate drying of each layer is carried out at room temperature at pressure lower than atmospheric pressure, in an alternating electromagnetic field before the process of hardening the outer surface of the layer. Final drying of all layers of the electroconductive coating is carried out at polymerisation temperature of the electroconductive composition binder before the end of polymerisation of all layers of the electroconductive coating.

EFFECT: obtaining a solid film-type electroconductive coating with small spread of values of electrical resistance of coating samples made in the same batch.

8 cl, 2 dwg, 2 tbl, 3 ex

FIELD: textiles, paper.

SUBSTANCE: textile product at stage (a) is sealed with an aqueous printing composition, at stage (b) it is heat-treated on one or more stages, at stage (c) other metal is precipitated on the textile product of a flat shape. At that the aqueous composition contains from 10 to 90 wt % of at least one metal powder (a) selected from the group consisting of powdered zinc, nickel, copper, tin, cobalt, manganese, iron, magnesium, lead, chromium, bismuth, and mixtures of these metals and their alloys. The composition also contains from 1 to 20 wt % of binder (b) which is an aqueous dispersion of film-forming polymer, from 0.1 to 4 wt % nonionic emulsifier (c), and from 0 to 5 wt % modifier of rheological properties (d). The method is used in the manufacture of textile products heated. The resulting textile product is capable to partially conduct electricity and shield electromagnetic radiation.

EFFECT: proposed technology of production of textile products requires no special equipment, has flexibility and low costs intensity.

12 cl, 2 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: method involves applying coating material onto a metal substrate using a knife coater, by dipping, spray-lacquering, using rolls, by soaking or pouring. The coating material contains an easily oxidisable organic or organo-inorganic binder, with easily oxidisable organic components, and electroconductive metallic or non-metal filler. In order to ensure capacity for bonding, the binder also contains compounds which, when heated in reducing conditions at 840°C, form an electroconductive phase. The coating material can contain electroconductive compounds which are resistant to oxidative processes at high temperature, as well as lubricants, pigments, grease and metals. The metal substrate used is steel, a steel alloy or steel with a metal coating. After applying the coating material onto the substrate, the composite coating material/substrate is heated to temperature 600-1300°C. The applied coating layer changes its structure and serves as an adhesive underlayer for other coating materials.

EFFECT: obtained layer structure has sufficient electroconductivity, needed for application in common types welding, particularly dot welding.

13 cl, 4 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of protecting metal surfaces from scaling and corrosion, and more specifically to protective anti-salt compositions which form a coating on the surface of articles, particularly on housings of pumps operating in an aggressive medium. The composition includes ethyl silicate binder, fine zinc and technical amorphous carbon. The overall quantitative content of carbon and said binder is 100 wt % with carbon content of 5-95 wt %, and zinc content is 0.5-3.0 pts.wt per 1 pts.wt overall quantitative content of carbon and binder. A method of preparing the composition includes preparing a preliminary base consisting of a mixture of carbon and ethyl silicate binder. Further, zinc or a mixture of zinc with ethyl or isopropyl alcohol is added to said preliminary base while stirring, wherein said alcohols are taken in amount of not more than 5 wt % of the total weight of the composition.

EFFECT: preparing a composition which enables to form a coating with high stability and sufficient adhesion while simultaneously providing, through said coating, high antifouling capability in a formation fluid environment and anti-corrosion capability.

8 cl, 4 tbl, 4 ex

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