Silane as a coating material and silane coating method

FIELD: coating production.

SUBSTANCE: invention is referred to silane-based coating production method. One or several silanes are condensed with diol or polyol, then a solvent is added laced with the reagent consisting of Lewis acids or Lewis bases. The coating material derived upon that is applied to the base coat and solidified. The silanes are selected out of 3-isocyanatopropyltrimecoxysilane and isocyanatopropyltriethoxysilane which are inorganically bound in advance in the amount of no more than 1%. Water ratio in the reaction is no more than 1%. Alcohols, acetates or simple ethers are added as solvents. Delustering agents, wetting dispersers, antifoam agents, waxes, biocides, preservatives or coloring pigments are further added. The coating is applied to the base coat by hydrochemical method, particularly, by sputtering, dipping, spray flow, rolling-up, spreading, impressing, flinging, doctor knife, as well as vacuum deposition. After being applied the coating material is solidified at the temperature from the ambient one to 1200C. The base coat consists of metal, plastic, ceramics, lacquer, fabric, textile, natural substances, such as wood or leather, glass, mineral substances or composite materials.

EFFECT: mar-proof, anticorrosion, easily cleared, fingermark-free, antireflective, non-weep, scale-protective, diffuse-barrier, radiation-protective, or as self-cleaning, antibacterial, antimicrobic, tribological or hydrophobic coating.

16 cl, 4 ex

 

The invention relates to silane as the coating material and method of coating of the silane.

Known coating of silane, obtained by applying the silicone resin. For this preliminary condensation links-molecules, such as dimethylsiloxane, or otherwise organically modified homologous species before the formation of high molecular weight resins. They can then be cured using a commercial means of initiation. Such systems are used as coatings, protection of buildings, sealing masses, etc.

In order for these systems can be maintained in a condition suitable for coating form and to prevent the formation of gel are applied, as a rule, the silanes with two organically modified side chains.

Such systems coatings have high heat resistance, but a mediocre abrasion resistance.

Three and four structured silanes are transferred by the Sol-gel process in processable form. During this process silanes such as tetraethoxysilane or methyltriethoxysilane and organically modified silanes, such as glycidoxypropyltrimethoxysilane or methacryloyloxyethyl and others, hydrolyzing with water in the presence of a catalyst and pre-condens the shape. Forms suitable for coating the Sol, which, after application to the surface and curing eligible for cover.

This forms an additional organic lattice structure and cover are generally resistant to scratching, highly structured and resistant to chemicals.

However, during the synthesis of the formed low molecular weight alcohols, such as methanol and ethanol, with a low flash point and is difficult to remove. As described in DE 19816136 A1, they can prematurely withdraw or, as stated in DE 10063519 A1, they can be separated by phase separation. Also is the problem of limited viability, due to the fact that the condensation reaction proceed without control.

Therefore, the object of the invention is to provide a method for coating of the silane according to the restrictive part of the formula of the invention is free from the above disadvantages.

This task is solved according to the invention by a method of applying a coating of silane, and carry out organic reactions "stitching" between one or more not pre-condensed silanes with a molecular mass of more than 300 and homologous or not homologous silanes or organic monomers, oligomers or polymers with doba is coy reagent, consisting of Lewis acids in an amount of from 0.5 to 50 wt.%, then the obtained coating material applied to the substrate and utverjdayut.

Unexpectedly, it was found that the reaction between a high molecular weight, slightly structured pre-silanes and related reagents can be formed a new class of coating materials. According to the prior art silane treated by Sol-gel processes, in this case, applying their pre-condensed species. The procedure according to the invention, in which all or substantially no reaction of the preliminary condensation is optimal due to the fact that more there are no restrictions regarding the viability and, in addition, are provided with improved properties of the coating material, in particular a high resistance to scratching.

Organic reaction "stitching" refers to the formation of organic cross-linking between the two silanes or between silanes and organic molecules using organic functional groups, resulting in the formation of high molecular weight silanes.

According to the invention provided that the molecular weight of the silane or silanes amounted to 500, particularly preferably more than 1000.

It is important that the silanes had the higher molar mass, thanks to what on the surface may begin the reaction without evaporation is not condensed silanes.

In the framework of the invention provides that the silane or silanes in organic side chains contain polarized groups suitable for the formation of hydrogen bridge bonds.

Also according to the invention is provided, so that the vapor pressure of the silane or silanes was less than 2, preferably less than 1 and particularly preferably less than 0.5 hPa at 20C.

For example, it is possible that the silane or silanes represented Solanaceae, pre-structured diodes or polyols.

In this regard, it is preferable that the organic part of the molecular weight was higher than inorganic.

As silanes can be applied, in particular: 3-aminopropyltriethoxysilane, aminoethylaminomethyl, aminoethylaminomethyl, 3-aminopropyltrimethoxysilane, N-(2-amino-ethyl)-3-aminopropyltrimethoxysilane, N-(2-amino-ethyl)-3-aminopropyltrimethoxysilane, N-(2-amino-ethyl)-3-aminopropyltrimethoxysilane, N-cyclohexyl-3-aminopropyltrimethoxysilane, benzylaminocyclohexanemethanol, universidadeestadualdoceara, VINYLTRIMETHOXYSILANE, vinyltriethoxysilane, vinylidenechloride, vinyl(Tris)methoxyethoxide, fenilmetilketil, Winnie the Tris(2-methoxyethoxy)silane, vinyltriethoxysilane, chloropropionitrile, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, glycidoxypropyltrimethoxysilane, mercaptopropionylglycine, bis-triethoxysilylpropyl, bis-triethoxycaprylylsilane, bis-triethoxycaprylylsilane, N-cyclohexyldiazeniumdioxy, N-cyclohexylbenzothiazole, N-phenylaminopyrimidine, (methacryloxyethyl)metaldimension, methacrylate-oxyethyltrimethylammonium, (methacryloxyethyl)metaldimension, methacrylate-oxyethyltrimethylammonium, (methacryloxyethyl)metildigoxin, Methacrylonitrile, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, (isocyanatomethyl)metaldimension, 3-isocyanatopropyltrimethoxysilane, 3-trimethoxysilylmethyl-O-methylcarbamate, N-dimethoxy-(methyl)millimeter-O-methyl-carbamate, the anhydride of 3-(triethoxysilyl)propriatary acid.

In the framework of the invention provides that the water content was less than 5%, preferably not more than 1%, particularly preferably, the reaction proceeded in the absence of water.

Typically, the humidity of the air does not disturb the reaction.

Also provided, so that the silane or silanes were pre-structured the Ana is not more than 5%, preferably not more than 1% and especially preferably, they have not been subjected to preliminary inorganic structuring.

Also part of the invention is that as the reagent used acid or base Lewis in an amount up to 20 wt.%, in particular in the form of complexes, salts or particles of transition metals, preferably in the form of micro - or nanoparticles.

In this regard, preferably, complexes, salts or particles of transition metals represented complexes of titanium, aluminum, tin or zirconium.

Can also be provided so as fillers were used particles, in particular micro-, submicro - or nanoparticles.

A variant embodiment of the invention is that use solvents, in particular alcohols, acetates, ethers, or reactive diluents.

Also within the invention is provided to apply matting tools, wetting dispersant, antispyware, waxes, biocides, preservatives or coloring pigments.

Another variant implementation of the invention is that the coating material is applied on a substrate hydrochemical method, in particular by spraying, dipping, spray drenching, knurling, smearing or sputtering in vacuum.

According to the invention provides that the substrate is compiled by the Yala metal, plastics, ceramics, lacquer, textiles, natural materials such as wood and leather, glass, mineral substances or of composite materials.

Also according to the invention provides that the coating material was utverjdala after his deposition at a temperature from room temperature up to 1200C, preferably from room temperature up to 250C, while the curing is preferably carried out thermally using microwave or ultraviolet radiation.

In the framework of the invention also provides a coating of silane deposited by the method according to the invention.

Also the invention includes a scratch resistant coating, anti corrosion coating, easy to clean coating, coating, do not retain fingerprints, ar coating, not zapotecas floor, floor, protecting it from scaling, blocking the diffusion coating, coating for protection against exposure or self-cleaning, antibacterial, antimicrobial, tribological or hydrophilic coating.

Below the invention is explained more by using examples of implementation.

Example 1

11,8 g hexadiene and 49.5 g of isocyanatopropyltrimethoxysilane with stirring, they were heated to 50C and then added 0.1 g of dibutyltindilaurate tin. Continued stirring for 30 minutes at 50C and then cooled to room temperature the market.

5 g of the adduct (see above) was dissolved in 10 g of 1-methoxy-2-propanol and added 0.2 g of aluminum acetylacetonate.

After application (for example, inkjet drenching) on the polycarbonate plate were cured for 50 minutes at 120C in a drying oven with air circulation.

The resulting coating had excellent resistance to scratching.

Example 2

30.0 g of Desmophen 1145 and 4.3 g of isocyanatopropyltrimethoxysilane was heated to 50C and added them 0.15 g dibutyltindilaurate tin. Continued stirring for 1 h at 50C and then cooled to room temperature.

10 g of the reaction product (see above) was dissolved in 8 g of 1-methoxy-2-propanol and mixed with 0.1 g of aluminum acetylacetonate.

The resulting solution was applied in the form of a coating on sheet metal deposition and utverjdali at 150C for 60 minutes in a drying oven with air circulation.

Coatings were characterized by high resistance to scratching and corrosion.

Example 3

22.1 g of aminopropyltriethoxysilane and 27.8 g of glycidoxypropyltrimethoxysilane mixed at 45C and kept for 45 minutes at this temperature.

10 g of the reaction mixture was dissolved in 12 g of isopropanol and added 0.3 g of acetylacetone.

After coating on aluminum sheets inkjet drenching coverage was utverjdali at 120C for 20 minutes in a drying oven with air circulation.

The coating had a high resistance to scratching and corrosion.

Example 4

24.8 g of 3-methoxypropionitrile dissolved in 12 g of 1-methoxy-2-propanol, was added 2.5 g of Ebecryl 1259 and 2.0 g of Desmodur N 3300 and kept at 40C for 2 hours. Then to the mixture was added 0.24 g of zirconium acetylacetonate. The mixture was applied by spray to pour on the plate of polymethyl methacrylate (emission spectra obtained for pure), were irradiated at approx. a 2.5 j/cm2mercury lamp, medium pressure and then kept for 2 h at 80C.

The coating had a high resistance to scratching and abrasion, as well as to acids and bases.

1. The method of obtaining silane-based, where one or more silanes selected from 3-isocyanatopropyltrimethoxysilane and isocyanatopropyltrimethoxysilane that Neorganicheskie pre-sewn in an amount not more than 1%, condense with diola or polyol, and the water content in the reaction is not more than 1%, add solvent, with the addition of the reagent, consisting of Lewis acids or Lewis bases, in the amount of from 0.5 to 50 wt.%, and the coating material is applied on a substrate and utverjdayut.

2. The method according to claim 1, where the molecular weight of the silane or silanes is more than 200, in particular more than 300, preferably more than 500, particularly preferably more than 1000.

3. The method according to claim 1, where the vapor pressure is Ilana or silanes is less than 2, preferably less than 1, particularly preferably less than 0.5 hPa at 20C.

4. The method according to claim 1, where the organic fraction of molecular weight greater than inorganic.

5. The method according to claim 1, where the reaction proceeds in the absence of water.

6. The method according to claim 1 where the silane or silanes Neorganicheskie not pre-sewn.

7. The method according to claim 1, where the reagents used from 0.5 to 20 wt.%, the Lewis acids or Lewis bases, particularly in the form of complexes, salts or particles of transition metals, preferably in the form of micro - or nanoparticles.

8. The method according to claim 7, where the complexes, salts or particles of transition metals represent complexes of titanium, aluminum, tin or zirconium.

9. The method according to claim 1, where the filler type of particles, including microparticles, submicroscale or nanoparticles.

10. The method according to claim 1, where the solvent-type alcohols, acetates or ethers.

11. The method according to claim 1, where add matting tools, wetting dispersant, antispyware, waxes, biocides, preservatives or coloring pigments.

12. The method according to claim 1, where the coating material is applied onto the substrate hydrochemical method, in particular by spraying, dipping, spray drenching, knurling, smearing, printing, throwing, squeegee, and evaporated in vacuum.

13. The method according to item 12, where the substrate consists of a metal layer of the assy, ceramics, lacquer, textiles, textiles, natural substances such as wood or leather, glass, mineral substances or of composite materials.

14. The method according to item 12, where the coating material after application utverjdayut at a temperature from room temperature up to 1200C, preferably from room temperature up to 250C, and the curing is preferably carried out thermally by means of microwave or UV-irradiation.

15. The coating on the basis of silane, obtained by the method according to claim 1.

16. The coating according to 15 as resistant to scratching, corrosion-resistant, easy to clean, does not leave fingerprints, enlightening, not sapotaweyak, onlinecasinoga, diffuse barrier, radiation-protective or self-cleaning, antibacterial, antimicrobial, tribological or hydrophilic coating.



 

Same patents:

FIELD: construction.

SUBSTANCE: adhesive composition includes methyl methacrylate and benzoyl peroxide. The adhesive composition additionally contains triethanolamine, epoxy resin and a marshallite filler. Using the adhesive composition makes it possible to considerably increase the depth of porous material impregnation and to improve evenness of composition hardening in concrete. The adhesive composition may be used as a protective anticorrosion coating, in repair of various concrete structures from filling small cracks to puttying large defects, and also as a filling polymer composition for porous materials.

EFFECT: increased protection of concrete surfaces.

2 tbl, 7 ex

FIELD: construction.

SUBSTANCE: adhesive composition includes methyl methacrylate and benzoyl peroxide. The adhesive composition additionally contains triethanolamine, epoxy resin and a marshallite filler. Using the adhesive composition makes it possible to considerably increase the depth of porous material impregnation and to improve evenness of composition hardening in concrete. The adhesive composition may be used as a protective anticorrosion coating, in repair of various concrete structures from filling small cracks to puttying large defects, and also as a filling polymer composition for porous materials.

EFFECT: increased protection of concrete surfaces.

2 tbl, 7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing (meth)acrylic esters (F) based on alcohols having at least one carbon-carbon triple bond, characterised by that at least one alcohol having at least one carbon-carbon triple bond of formula (1) where R1 denotes hydrogen, alkyl having 1-18 carbon atoms; alkyl having 2-18 carbon atoms, aryl having 6-12 carbon atoms, cycloalkyl having 5-12 carbon atoms, interrupted, if necessary, by one or more oxygen and/or sulphur atoms and/or one or more substituted or unsubstituted amino groups, or a 5-6-member heterocycl having oxygen, nitrogen and/or sulphur atoms, wherein said residues can be substituted with aryl, alkyl, aryloxy, alkyloxy, heteroatoms/or heterocycles, respectively, and R2 denotes alkylene having 1-20 carbon atoms, cycloalkylene having 5-12 carbon atoms, arylene having 6-12 carbon atoms, or alkylene having 2-20 carbon atoms interrupted by one or more oxygen and/or sulphur atoms and/or one or more substituted or unsubstituted amino groups and/or one or more cycloalkyl groups, -(CO)-, -O(CO)O, -(NH)(CO)O-, -O(CO)(NH)-, -O(CO)- or -(CO)O, where the names of the residues can be replaced with aryl, alkyl, aryloxy, alkyloxy, heteroatoms and/or heterocycles respectively, n is a whole number from 0 to 3, preferably from 0 to 2 and more preferably from 1 to 2 and X; for each i=0 to n can be independently selected from a group comprising -CH2-CH2-O-, -CH2-CH(CH3)-O-, -CH(CH3)-CH2-O-, -CH2-C(CH3)2-O-, -C(CH3)2-CH2-O-, -CH2-CHVin-O-, -CHVin-CH2-O-, -CH2-CHPh-O- and -CHPh-CH2-O-, preferably from a group comprising -CH2-CH2-O-, -CH2-CH(CH3)-O- and -CH(CH3)-CH2-O-, and more preferably CH2-CH2-O-, where Ph denotes phenyl and Vin denotes vinyl, wherein the hydroxy groups of the alcohol are primary or secondary, esterified in the presence of at least one enzyme (E) with (meth)acrylic acid or re-esterified with at least one (meth)acrylic ester (D).

EFFECT: use of the present method enables to obtain esters of an acid based on alcohols which have carbon-carbon triple bonds with good output and low colour indices.

5 cl, 3 ex

Road marking paint // 2425076

FIELD: chemistry.

SUBSTANCE: road marking paint contains acrylic film-forming agent in form of a copolymer of n-butylmethacrylate with glycidylmethacrylate, calcite as filler, chloroparaffin CP-470 as plasticiser, toluene and ethyl acetate as an organic solvent, titanium dioxide as a pigment, an organic montmorillonite derivative Bentone SD-2 as a thickener, a dispersant in form of a mixture of natural phospholipids Soya lecithin, an anti-sedimentation agent in form of 20% solution of an organic compound in xylene M-P-A - 2000X, with the given ratio of components.

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2 tbl, 10 ex

FIELD: medicine.

SUBSTANCE: invention refers to a method of preparing a colour mass for vascular system filling in pathologic examinations which involves premixing a dye - a water-soluble acrylic colour and water in the ratio 0.9-1.1 portions to 0.18-0.21 portions to form a homogeneous mass, adding 9.7-9.9 portions of water and 0.18-0.21 portions of 96 % alcohol. It is followed with retempering and adding 9.7-9.9 portions of 96% alcohol, keeping for 12 hours and filtering.

EFFECT: improved colour mass for vascular system filling and simplified manufacturing procedure.

1 dwg, 1 ex

FIELD: construction.

SUBSTANCE: compound for road marking comprises main resins - n-butylacrylate and methyl methacrylate and hardener. Additionally it contains reactive resin on the basis of acrylic resins, hardener and accelerant of hardening reaction, containing the following components: 2-ethyl hexyacrylate, N,N-dihydroxyethyl-r-toluidine, N,N-dimethyl-r-toluidine, 2 (2-hydroxy-3,5-ditret-butylphenyl) benzotriazol, heavy hydrosulfonated oil, at the same time ratio of main resins and reactive resin is in the range from 1:3 to 3:1.

EFFECT: expansion of possibility to use compound in climatic conditions with low temperatures, which increases efficiency of marking operation with preservation of high speed of hardening.

FIELD: chemistry.

SUBSTANCE: invention relates to compositions for protective coating for window glass. The invention discloses a composition which contains a) one or more film-forming resins which contain acrylic and/or methacrylic functional fragments; b) one or more reactive diluents which contain an acrylate functional group; c) one or more compounds which promote adhesion of the composition to glass, which contain a product of a Michael reaction, having four or more siloxane groups, at least one acrylate group and a tertiary amine group; d) one or more filler substances, capable of endowing compositions with wear-resistance in solidified state; and e) one or more compounds which can react with a film-forming resin, which contain at least one acid fragment.

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16 cl, 5 dwg, 28 tbl, 38 ex

FIELD: chemistry.

SUBSTANCE: disclosed is an actinic radiation hardened coating material which essentially or completely does not contain organic solvents and contains: (A) two compounds of formula I, in which X is an aromatic residue with 6-14 carbon atoms, a heterocyclic aromatic residue with 5-20 ring atoms or an alkyl residue with 6-30 carbon atoms, Y is a trivalent aliphatic residue, Z is a binding functional group and Gr is an organic residue with at least one actinic radiation activated group, where of the two compounds (A), one has one aromatic or heterocyclic aromatic residue X (= A1 compound) and one has an alkyl residue X (=A2 compound); X - O - Y{-OH) - Z - Gr (I), (B) oligourethanes or polyurethanes and/or oligoesters and polyesters with two or three actinic radiation activated groups; (C) at least one component selected from a group consisting of colour and/or decorative effect endowing pigments; (D) wax; (E) amorphous silicon dioxide and (F) is a polysiloxane additive with an actinic radiation activated group. The invention also discloses a method of producing said coating material and use thereof to obtain coil coatings.

EFFECT: invention discloses coating material which is highly reactive, has high pigment content but is stable during storage, can be easily and quickly applied and solidifies at low temperatures without evaporation of volatile organic compounds, the method of producing the disclosed coating material is simple and easily producible.

25 cl, 16 ex

FIELD: chemistry.

SUBSTANCE: invention relates to aqueous coating compositions with low content of volatile organic compounds. The aqueous coating composition contains water, oxidative-curable resin, at least 1.5% of the weight of the composition of a non-structured alkali-soluble acrylate, having weight-average molecular weight Mw of 200000 g/mol or lower, and acid number of at least 15 mg KOH/g; and an emulsified second acrylate having Mw of at least 300000 g/mol. Content of the alkali-soluble acrylate in the composition is equal to at least 3 wt %. The weight ratio of the alkali-soluble acrylate to the second emulsified acrylate ranges from 1:0.5 to 1:5, and the weight ratio of the alkali-soluble acrylate to the oxidative-curable resin ranges from 1:0.5 to 1:10. The oxidative curable resin is an alkyd resin, alkyd-urethane resin. The second acrylate is cross-linkable, for example azomethine cross-linkable links.

EFFECT: aqueous coating composition has good physical and mechanical properties.

9 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: description is given of a polymerisation-capable stabilised adhesive composition made from two parts, containing an organoboron compound in one part, capable of forming compounds which form free radicals, which contains a complex of organoborane and amine or organoborate salt, one or more compounds, capable of free-radical polymerisation, and one or more compounds, containing dihydrocarbylhydroxylamine. In the other part the composition contains one or more compounds, capable of free-radical polymerisation, and a decomplexing agent, capable of converting organoboron compound into a compound which forms free radicals when the two parts are brought into contact. Description is also given a polymerisation method, involving bringing into contact the above mentioned composition, capable of polymerisation, as well as a method of linking two or more compounds, which involves: combined contacting of components of the above mentioned composition, under such conditions that, polymerisation is initiated; bringing the composition into contact with two or more compounds; arranging two or more compounds such that, the composition is localised between the two or more compounds, which are in contact with each other; and solidification of the composition so as to join two or more compounds.

EFFECT: design of a stabilising composition, containing compounds which are polymerised by free-radical polymerisation, where an organoboron compound is present.

5 cl, 4 tbl, 2 dwg, 16 ex

FIELD: chemistry.

SUBSTANCE: substrate is nonwoven material and the method involves steps for applying a composition in form of an aqueous suspension onto at least one side of the substrate. The composition contains silane, an initiator and an inorganic compound and the initiator is an aqueous acid or base, and the inorganic compound contains at least one metal and/or semimetal. The composition is then dried first at room temperature and then at 200C after 10 seconds. Further, at least one coating composition is applied onto at least one side of the substrate on which the composition was already applied during the previous step. The coating composition contains silane of general formula (Z1)Si(OR)3, where Z1 denotes R, OR or Gly (Gly=3- glycidyloxypropyl) and R denotes an alkyl having 1-18 carbon atoms and all R can be identical or different, oxide particles selected from oxides of Ti, Si, Zr, Al, Y, Sn, Zn, Ce or mixtures thereof, epoxy resins and an aqueous acid or base as the initiator. The coating composition is dried for 30 minutes at 120C.

EFFECT: very high flexibility of coated substrates without destroying or cracking the applied coating.

15 cl, 2 ex

FIELD: chemistry.

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

FIELD: organosilicon polymer materials.

SUBSTANCE: fields of invention are aircraft and space engineering, instrumentation engineering etc., when materials providing adhesion of organosilicon hermetics to various substrates are required. Technical task of invention were to ensure stable adhesion, at ambient temperature, of organosilicon hermetics based on various-structure polymers to substrates of different chemical nature both in native state and after exposure to elevated temperatures and moisture. Composition according to invention comprises alkoxy derivative of silicon: mixture of tetraethoxysilane with oilgoethoxysiloxanes (said mixture being partial hydrolysis product obtained from tetraethoxysilane with 30-34% SiO2), alkoxy derivative of titanium: polybutyl titanate, carboxy-functional alkoxysilane-carbaminoalkoxysilane, organic solvent: gasoline, white spirite, toluene, or mixture thereof, and, additionally, ethylhydridesiloxane oligomer or methylhydridesiloxane oligomer.

EFFECT: improved adhesion characteristics.

3 cl, 3 tbl

FIELD: chemistry.

SUBSTANCE: antifouling means includes water solution, containing polyvinyl alcohol, obtained by saponification of polyvinyl ester, which contains monomer units with specific silyl group and satisfies following formulas (I) and (II): 370<P×S<9000... (I), where P stands for average viscous degree of polyvinyl alcohol polymerization, and S stands for content (mole %) of monomer units, including silyl group of formula (1), in polyvinyl alcohol; 0.2/100≤(A-B)/(B)≤75/100... (II), where A stands for content (h/mln) of silicon atoms in polyvinyl alcohol, and B stands for content (h/mln) of silicon atoms in polyvinyl alcohol, which was washed with methanol with sodium hydroxide and after that washed with methanol by extraction in Soxhlet apparatus. Invention also includes method of obtaining antifouling means, polyvinyl alcohol for antifouling means and method of obtaining polymer, in particular, polyvinylchloride, where polymerisation is carried out in reactor, whose inner wall is covered with antifouling means.

EFFECT: means is exclusive as to its viscous stability, its film water-resistance and ability to prevent deposits, growing on inner wall of polymerisation reactor, and which can prevent contamination of polymer product with extraneous substances.

13 cl, 2 tbl, 21 ex

FIELD: chemistry.

SUBSTANCE: new cyclic carboxylic acid is obtained in reaction which includes performing connection [J] of, at least one terpen-based diene connection (conjugate diene connection), chosen from group consisting of alloocymen, ocymen, mircen, α-terpinen and α-phellandren, and [K], at least one unsaturated carboxylic acid, chosen from α,β-unsaturated carboxylic acids and monoethers of α, β-unsaturated dicarboxylic acids. Connecting agent (A) for antifouling paint is also revealed. It containes one or more substances chosen from new cyclic carboxylic acid, derivative from cyclic carboxylic acid (excluding metal salt), metal salts of cyclic carboxylic acid and metal salts of the derivative of cyclic carboxylic acid, as well as composition of antifouling paint, which contains connecting agent (A) and copolymer (B) for antifouling paint of self-cleaning type, which is a polymerising copolymer based on basic metal salt of unsaturated carboxylic acid or polymerising unsaturated copolymer based on silyl ether of unsaturated carboxylic acid. From composition of antifouling paint covering film can be formed, which has only slight influence on environment, it is evenly subjected to erosion with definite rate, is able to retain excellent properties against fouling for a long period of time and can be applied to the surfaces of ships and other objects, which are used in marine territories with high risk of fouling.

EFFECT: obtaining film of antifouling paint, which has only slight influence on environment, is evenly subjected to erosion with definite rate, is able to retain excellent properties against fouling for a long period of time.

26 cl, 12 dwg, 4 tbl

FIELD: chemistry.

SUBSTANCE: invention pertains to use of polyvinyl alcohols with functional silane groups in primary coating for separate paper and film layers, containing at least, one silane containing polyvinyl alcohol based on fully or partially saponified copolymers of complex vinyl esters with degree of hydrolysis from 75 to 100 mol.%, which are obtained through radical polymerisation of monomers (a) and (b), as well as comonomers (c) when necessary. The invention also relates to the method of depositing adhesive coating for separate paper and film layers, including primary coating of a substrate using a primary coat containing the above mentioned silane containing polyvinyl alcohol, and subsequent depositing of silicon layer.

EFFECT: early depositing on paper and film layers of the given silane containing polyvinyl alcohols, as primary coating, allows preventing penetration of the silicon layer into the substrate during the depositing process, and also allows increasing resistance to abrasion of the silicon coated surface; besides that, viscosity of the polyvinyl alcohols does not increase during storage, and this leads to increased storage time of separate paper and film layers.

7 cl, 3 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to chemistry and technology of obtaining siloxane oligomers. Proposed are new (organoalkoxysilyl)oligoalkylhydridesiloxanes of general formula Ra(R1O)3-aSiO[R2HSiO]nR1 (R - alkyl C1-C12, phenyl, vinyl, methyltrifluoropropyl and 3-(fluoroalkoxy)propyl of general formula H(CF2)pCH2O(CH2)3 where p=4, 6, 8; R1 - alkyl C1-C8; R2 - methyl, ethyl; n=3-30; a=1-3) and a method of obtaining the said compounds via catalytic rearrangement between organoalkoxysilane of general formula RaSi(OR1)4-a, (R, R1, a assume values given above) and linear or cyclic oligoalkylhydridesiloxane of general formula [R2HSiO]m (R2 assumes values give above, m=4-60). Molar ratio of RaSi(OR1)4-a to R2HSiO equals 1:(3-30). The process is carried out while heating at temperature 60-95C in the presence of an acid catalyst. At the end of the rearrangement reaction, the product is neutralised with alkali-earth metal carbonates with subsequent removal of the solid phase. Product output is equal to 94-97%. The obtained products may be components of mixtures for hydrophobisation of construction materials, lacquer coatings, paper, textile products, etc.

EFFECT: design of a method for obtaining new organosilicon oligomers containing functional alkoxy-, SiH-groups in a linear chain.

4 cl, 10 ex

FIELD: polymer production.

SUBSTANCE: invention relates to polyorganosiloxane synthetic area and can find use in creation of heat-resistant composites. Novel hydride functional polycyclic organosilicon polymers have general formula: (SiO1.5[YSi(CH2)2]nH)6-1500[SiO2]1-3000, where Y represents -O- and/or -CH2CH2Si(Me-)3)O- and n = 1 or 4. In particular, when Y is -O-, then n = 1 or 4, and when Y is -CH2CH2Si(Me-)3)O-, then n = 1. Method of preparing such polymers is also described. Thus obtained polymers are intended to be included in composite material compositions or for production of multifunctional organosilicon polymers based thereon.

EFFECT: increased yield of desired products under commercially acceptable conditions.

20 cl, 6 dwg, 1 tbl, 7 ex

FIELD: elementoorganic synthesis.

SUBSTANCE: oligoorganosiloxanes are prepared via water hydrolysis of alkylchlorosilanes in presence of calcium chloride, wherein said alkylchlorosilanes are used in mixture with alkylhydridochlorosilanes or in mixture with alkylhydridochlorosilanes and tetraethoxysilane. Hydrolysis is carried out at total functionality of the system less than 2, calcium chloride concentration in water 20-43%, and water consumption 0.5-5.4 mol per 1 g-atom chlorine in initial monomer mixture.

EFFECT: enabled production of stable-in-storage waterproofing materials, components of antiadhesive compositions, and intermediates for synthesis of new products with useful physicochemical and working characteristics.

6 ex

The invention relates to the field of production of new organosilsesquioxane, namely oligodimethylsiloxanes General formula

CHO(SiO2)(HSiO1,5)CH3where n = 0,8-1,2;

m = 0,8-1,2, which can be used as impregnating, finishing materials for wood
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