Aqueous dispersion of copolymerisation products, use thereof, preparation method thereof (versions thereof), aqueous coating agent, coating made therefrom and coating method

FIELD: chemistry.

SUBSTANCE: disclosed aqueous dispersion of copolymerisation products containing A) one or more hydroxy-functional copolymerisation products, obtained from the following (wt %): non-hydroxyl containing ester of (meth)acrylic acid and/or vinylaromatic compounds (53.5-87), hydroxy-functional ester of (meth)acrylic acid (2.5-45.9), ionic and/or potentially ionic monomers (0.6-19) capable of radical copolymerisation, as well as, if necessary, other monomers capable of radical copolymerisation which are different from compounds of components a)-c) (0-43.4) and B) at least one hydroxy-functional polycarbonate-polyol as a reactive diluent. Disclosed also is an aqueous coating agent which contains one or more of the disclosed aqueous dispersions of copolymerisation products and at least one cross-linking agent which interacts with hydroxyl groups.

EFFECT: disclosed aqueous dispersions have low solvent content and enable to obtain coatings with high level of resistance of lacquer films, with high scratch resistance and acid resistance.

5 cl, 1 tbl, 12 ex

 

The invention relates to aqueous dispersions of polymers with low solvent content based on hydroxyquinoline of copolymerization, particularly to aqueous dispersions of copolymerization, its application and how you can get it (its variants), to water means for coating derived from the coating and to a method for coating.

Known introduction to systems for coating (for example, described in German patent application DE-A 3209421 and in European patent applications EP-A 95263, EP-A 105293, EP-A 133949, EP-A 288763) waterborne binder based on a copolymer. However, as a rule, they contain emulsifiers to stabilize and/or increased amounts of organic co-solvent.

The use of increased amounts of organic solvent is undesirable from an environmental point of view. However, they cannot be avoided, to ensure that when you receive polymerizate sufficient ability to mixing and heat removal from the reaction mixture, as well as some minimal degree of filling of the reactor. In addition, the organic solvent results in water means for applying coatings to beneficial effects such as improved stability during storage, wetting of pigments, optical properties of films and bottling.

The subsequent decrease is due to the technology content of the project for a solvent copolymerizate or dispersions of copolymerization associated with high equipment and energy costs and, therefore, also with the high cost. There is therefore a need for aqueous dispersions of polymerization, upon receipt of which it is possible to largely abandon the use of an organic solvent without deterioration while technology and consumer properties.

Dispersion of copolymerization, which must be cured through chemical reactions, for example with aminos, blocked polyisocyanate or polyisocyanate, must contain a certain amount of reactive groups, for example hydroxyl groups. These groups are usually introduced into the copolymer when used together hydroxyquinoline ether (meth)acrylic acid copolymerization. However, these initial substance in comparison with esters of (meth)acrylic acid, which do not contain functional groups, or with styrene are very expensive. In addition, it is often necessary to use an increased amount of these starting materials in comparison with copolymerizate, soluble in organic solvents, in order to compensate for the hydrophilicity of the lacquer film by high-density knitting.

One way of obtaining the secondary dispersions hydroxyquinoline of copolymerization with hydroxyl functional groups, which largely hut which indicate the use of solvents in the polymerization, described in European patent application EP-A 0758007. In this method, a commonly used solvent is completely or partially replaced by simple hydroxyquinoline polyester (hydroxyl functional groups). This simple hydroxyquinoline polyester is introduced into the secondary dispersion as a reactive diluent and the subsequent stitching reacts with isocyanates or blocked isocyanates with formation of urethane. Therefore it does not contribute to the volatilization of organic substances. But it is noted that the content in the varnish polyether results in some cases when it is used for low resistance, for example to low scratch resistance.

Now it has been found that aqueous dispersions of copolymerization with low solvent content and high resistance lacquer films, especially with very good scratch resistance and acid resistance based on hydroxyquinoline of copolymerization (with hydroxyl functional groups) can be obtained, if the reactive diluent used hydroxyquinoline polycarbonates (with hydroxyl functional groups).

Therefore, an object of the invention are aqueous dispersions of copolymerizate containing:

A) one or more hydroxyquinoline with whom polymerization, derived from

a) not containing hydroxyl groups, esters of (meth)acrylic acid and/or vinyl fragrances

b) hydroxyquinoline esters of (meth)acrylic acid,

c) capable of radical copolymerization of ionic and/or potentially ionic monomers, and

d) if necessary, the other capable of radical copolymerization of monomers, different from the compounds of components a)to C) and

B) at least one hydroxyquinoline polycarbonatediol as the reaction diluent.

The object of the present invention is also a method of producing dispersions of copolymerization according to the invention, characterized in that as the reaction diluent In) use at least one hydroxyquinoline polycarbonatediol and subjected to radical polymerization of one or more Monomeric mixtures containing

a) do not contain hydroxyl groups of an ester of (meth)acrylic acid and/or vinylaromatic connection

b) hydroxyquinolines an ester of (meth)acrylic acid,

c) capable of radical copolymerization of ionic and/or potentially ionic monomers, and

d) if necessary, the other capable of radical copolymerization monomers, different from the compounds of components a)-C)

and then received the first so copolymerizate dispersed in water before addition, or after adding a neutralizing agent.

In addition, another object of the invention is the use of aqueous dispersions of copolymerization according to the invention for obtaining resistant to scratching varnishes and coatings.

As monomers of component a) use the acrylates and methacrylates (hereinafter referred to as (meth)acrylates) with 1-18 carbon atoms in the alcohol part of the ester groups. This alcohol can be remotemachine, branched or cycloaliphatic.

Suitable as monomers of component a) are, for example, methyl-, ethyl-, n-propyl, n-butyl-, isopropyl-, isobutyl-, trebuil-, isomer of pentyl-, hexyl-, 2-ethylhexyl-, octyl-, dodecyl-, hexadecyl, octadecyl - or cyclohexyl-, trimethylcyclohexyl and isobornyl-(meth)acrylates or acetoacetanilide. Suitable vinylaromatic compounds are, in particular, styrene, optionally substituted styrene and vinyltoluene.

As component (a) can be used also any mixtures of the aforementioned compounds.

As component b) can be used Ethylenediamine containing hydroxyl groups, monomers, such as hydroxyalkyl esters of unsaturated carboxylic acids, preferably hydroxyalkyl(meth)acrylates with 2-12 carbon atoms, preferably 2-6 carbon atoms in the hydroxyalkyl is edicale.

Examples of such compounds are 2-hydroxyethyl(meth)acrylate, the isomeric hydroxypropyl(meth)acrylate, 2-, 3 - and 4-hydroxybutyl-(meth)acrylates, as well as isomeric hydroxyhexyl(meth)acrylates.

Under (meth)acrylates in the framework of the present invention as always imply the corresponding acrylates and methacrylates.

As capable of radical polymerization, ionic and/or potentially ionic monomers of the component (C) can be used refinancinn monomers with carboxyl groups or anhydrite groups of carboxylic acids, such as acrylic acid, methacrylic acid, β-carboxymethylchitin, crotonic acid, fumaric acid, maleic anhydride, taconova acid or monoalkyl ester of dibasic acids or anhydrides, such as monoalkyl ester of maleic acid. Preferred are acrylic acid and/or methacrylic acid.

As component C) are suitable, in addition, also unsaturated radically curable compounds with phosphate or phosphonate, or sulfoxylate, or sulphonate groups, such as described in international application WO-A 00/39181 (p.8, line 13 - p.9, line 19), preferably 2-acrylamide-2-methyl-propanesulfonate.

As compounds of component d) can be used the Ana and also other capable of radical polymerization monomers. They may include, for example, derivatives of acrylic or methacrylic acid such as acrylamide, methacrylamide, Acrylonitrile and Methacrylonitrile, then a simple vinyl ether and vinyl acetate. As others used, if necessary, component (d) can be considered di - or more multifunctional (meth)acrylate monomers and/or vinyl monomers, such as hexanediol(meth)acrylate or divinylbenzene. As component d) may also be used modified acceleratedly or subjected to elongation of the chain polymerizable hydroxyquinoline monomers with srednetsenovoj molecular weight ≤3000 g/mol, preferably ≤500 g/mol. As alkalisation can be used, for example, ethylene-, propylene - or butylenes, individually or in a mixture.

Other suitable components d) are complex, vinyl ethers, for example, versatile acid, known under the commercial name VEOVATM9, 10 and 11 (firm Resolution Performance Products). When it comes to complex vinyl ether with a highly branched structure of General formula (I)

and R2and R3are branched alkyl groups containing together for 6, 7 or 8 carbon atoms for VEOVA 9, 10 and 11, and R4is stands.

The glass transition temperature (sub> gfor homopolymerization series VEOVA is listed as 70°C (VEOVA 9), (-3)°C (VEOVA 10) and (-40)°C (VEOVA 11).

The other is used as component d) monomers are alkoksimyetilfosfinov or alkaxiavorpremykya esters of (meth)acrylic acid, formally obtained by etherification of the original oxyethylene or oxypropylene monohydroxy polyether alcohols, for example methanol, ethanol, isopropanol or one of the isomers of butanol acrylic or methacrylic acid.

As hydroxyquinoline of polycarbonatediol) preferably are considered products of interesterification simple diols, such as 1,4-butanediol, 1,6-hexanediol, di-, tri - or tetraethylene glycol, di-, tri - or tetrapropylene, 3-methyl-1,5-pentanediol or 4,4'-dimethylcyclohexane and/or their mixtures with dellcorporate, such as diphenylcarbonate or diallylmalonate, such as dimethylcarbonate, diethylcarbamyl, allencaron.com, such as ethylene carbonate resulting or propylene carbonate, or phosgene. If necessary, can also be used together in a smaller number of more powerful yet easy-polyols, such as trimethylolpropane, glycerol or pentaerythritol. Used according to the invention hydroxyquinoline polycarbonatediol) have an average hydroxyl shall unctionality from 1.6 to 6, preferably from 1.8 to 3 and particularly preferably from 1.9 to 2.3 and srednecenovogo molecular weight of from 240 to 5000, preferably from 500 to 3,000, particularly preferably from 700 to 1500 daltons. Obtaining suitable as component C) of polycarbonatediol preferably carried out according to the methods described in the European patents EP 1404740 B1 (p.6-8, examples 1-6) and European patent application EP 1477508 A1 (C.5, example 3).

Particularly preferred components B) are based on 1,4-butanediol, 1,6-hexanediol or 3-methyl-1,5-pentanediol or mixtures of both the above-mentioned diols and have an average hydroxyl functionality of from 1.9 to 2.05.

The amount of component C) based on the sum of components a) and b) is usually from 5 to 60 wt.%, preferably from 10 to 40 wt.% and particularly preferably from 15 to 30 wt.%

Polymerization of unsaturated monomers by prominent professional way. Usually with this purpose, the reaction vessel is injected reactive diluent) and polimerizuet unsaturated monomers using a radical polymerization initiator.

If necessary, may additionally be used in a smaller amount of organic solvent. Suitable auxiliary agents dissolution are common well-known in the technology of varnishes solvents such example is, as alcohols, ethers, alcohols containing ether groups, esters, ketones or non-polar hydrocarbons or mixtures of these solvents. The solvent is used in such quantity that its content in the finished dispersion ranged from 0 to 5 wt.%. If required, the used solvent can be partially removed by distillation.

The copolymerization is usually carried out at a temperature of from 40 to 200°C., preferably from 60 to 180°C., particularly preferably from 80 to 160°C.

As initiators of the polymerization reactions are suitable, for example, organic peroxides, such as hydrogen peroxide, di(trebuil) or trebutaries-2-ethylhexanoate and azo compounds such as nitrile isodesmosine acid. The number of initiators used depends on the desired molecular weight. To improve process safety and ease of manipulation peroxide initiators can also be used in the form of a solution in suitable organic solvents of the aforementioned type.

In one of the preferred embodiments the method is carried out on a two-step addition of the unsaturated monomers of the aforementioned monomers and their polymerization in the presence of component B). At the first stage (I) receive hydroxyquinoline copolymerized with a hydroxyl number of from 12 to 200 before occhialino from 15 to 190, particularly preferably from 100 to 165 mg of potassium hydroxide per gram of solids and an acid number of from 0 to 50, preferably from 0 to 20, particularly preferably from 0 to 15 mg of potassium hydroxide per gram of solids of from 55 to 90 wt.% component a), from 2.5 to 50 wt.% component b), from 0 to 6.5 wt.% component (C) and from 0 to 42.5 wt.% component d). At a later stage (II) obtained in stage (I) of the reaction mixture get another polymerizat of components a)to d), and this polymerizate has a hydroxyl number of from 20 to 200, preferably from 20 to 190, particularly preferably from 50 to 165 mg of potassium hydroxide per gram of solids and an acid number of from 50 to 200, preferably from 75 to 185, particularly preferably from 77 to 150 mg of potassium hydroxide per gram of solids. Thus polymerized with stage (II) is obtained from 45 to 80 wt.% component a), from 5 to 50 wt.% component b), from 6.5 to 25 wt.% component (C) and from 0 to 43.5 wt.% component d). Percentage data composition polymerizate as polymerizate sum up to 100 wt.%. The number of monomers at both stages of obtaining polymerizate chosen so that the mass ratio of polymerizate from the stage (I) to polymerizate with stage (II) ranged from 10:1 to 1:2, preferably from 6:1 to 2:1.

The mass ratio of the components of the synthesis PTA) to d) is usually chosen so that to copolymerizate had a hydroxyl number of from 12.5 to 200 mg of potassium hydroxide per gram of solids, preferably from 15 to 190 mg of potassium hydroxide per gram of solids, and particularly preferably from 95 to 165 mg of potassium hydroxide per gram of solids and an acid number of from 4.5 to 150 mg of potassium hydroxide per gram of solids, preferably from 7 to 75 mg of potassium hydroxide per gram of solids, particularly preferably from 10 to 60 mg of potassium hydroxide per gram of solids. The result polymerizat from the stage (I) and (II) receive from 54 to 83 wt.%, preferably from 53.5 to 87 wt.% component a), from 2.5 to 50 wt.%, preferably from 3 to 50 wt.% component b), from 0.6 to 19 wt.%, preferably from 1 to 12.5 wt.% component (C) and from 0 to 43.5 wt.%, preferably from 0 to 43 wt.% component (a).

Instead of the multi-stage polymerization method can also carry out the process continuously (gradient polymerization), when the monomer mixture was added respectively to the changing composition of the composition of copolymerizate or copolymerisation A), preferably the amount of hydrophilic monomers according to components (C) and may, (a) by the end of the supply exceeds supplied at the beginning of the number.

Obtained by the method according to the invention copolymerizate have srednecenovogo molekularnu the mass M nfrom 500 to 30,000 g/mol, preferably from 1000 to 15,000 g/mol, particularly preferably from 1500 to 10000 g/mol.

Before, during or after dispersion hydroxyquinoline of copolymerization A) in water available acid groups are at least partially transferred to the salt form by the addition of an appropriate agent neutralization. As the neutralizing agent suitable organic amines or water-soluble inorganic bases, such as soluble metal hydroxide, carbonates or bicarbonates of metals.

Examples of suitable amines are N-methylmorpholine, triethylamine, ethyldiethanolamine, N,N-dimethylethanolamine, N,N-dimethylethanolamine, N-methyldiethanolamine, diethylethanolamine, triethanolamine, mutanolysin, morpholine, 2-aminomethyl-2-methylpropanol or ISOPHORONEDIAMINE. The mixtures can also be partially used ammonia. Especially preferred are triethanolamine, N,N-dimethylethanolamine and ethyldiethanolamine.

The neutralizing agent is added in an amount such that the total theoretical degree of neutralization (acid groups) ranged from 40 to 150%, preferably from 60 to 120%. In this case, the degree of neutralization of the mean ratio introduced major groups of the component to neutralize the acid functional groups of copolymerizate. Display the spruce pH of the aqueous dispersion of the binder according to the invention is from 6 to 10, preferably from 6.5 to 9.

Water dispersion of copolymerization according to the invention have a solids content of 25 to 70 wt.%, preferably from 35 to 60 wt.%, particularly preferably from 40 to 55 wt.%, and the organic solvent content of 0 to 5 wt.%, preferably from 0.5 to 3.5 wt.%.

Dispersion of copolymerization according to the invention can be recycled in the water means for coating. Using a combination with cross-linking agents, depending on the reactivity or, if necessary, by blocking cross-linking agent can be obtained both single-component and two-component lacquers. In the sense of the present invention under one-component lacquers mean the tool for coating in which the binder component and a crosslinking component can be stored together, and there is no noticeable reaction knitting or harmful effects when applied. The crosslinking reaction occurs only when applied after activating the cross-linking agent. This activation can be caused for example by temperature increase. Under the two-component lacquers in the sense of the present invention involves means for coating in which the binder component and a crosslinking component in view of their high reactivity must nah is occurring in separate containers. Both components are mixed only shortly before application of the coating, and then they respond normally without additional activation. But to accelerate the crosslinking reaction may also be used as catalysts or fever.

Therefore, an object of the present invention is also water remedy for the coating containing:

i) one or more aqueous dispersions of copolymerization according to the invention, and

ii) at least one crosslinking agent capable of interacting with hydroxyl groups.

Suitable cross-linking agents that are reactive toward hydroxyl groups are, for example, polyisocyanate crosslinking agent, amido - and aminoformaldehyde resins, phenolic resins, aldehyde and ketone resins, such as phenol-formaldehyde resin, resole, furan resin, mcevenue resins, resin esters carbamide acid, triazine resins, melamine resins, benzoguanamine resin, cyanamide resin, aniline resin, such as described in .Wagner, H.F.Sarx, "Artificial resin varnish", Carl HanserVerlag München, 1971.

As a cross-linking agent is preferably used polyisocyanates. Such polyisocyanates typically contain in the molecule two or more isocyanate groups and are based on, for example, isophorondiisocyanate, hexamethylenediisocyanate, 1,diisocyanatohexane, bis(4-isocyanatobenzene)methane, 1,3-diisocyanatobutane, triisocyanate or isomeric 2,4 - and 2,6-toluenediisocyanate (TDI) and may contain, in addition, urethane, which is and/or biuret groups. If necessary, the polyisocyanates may also be blocked.

Especially preferred is the use of low-viscosity polyisocyanates of the aforementioned type based on aliphatic or cycloaliphatic isocyanates. If necessary they can also be gidratirovana.

Used as a crosslinking agent polyisocyanates typically have at 23°C viscosity of from 10 to 5,000 MPa·s, and if it is desirable adjusting the viscosity, this can be achieved by using a mixture of small quantities of inert solvents.

Copolymerizate according to the invention are usually quite hydrophilic, so that even hydrophobic crosslinking resin can be dispersed without additional emulsifiers. However, this does not prevent the use of external emulsifiers.

Water-soluble or dispersible polyisocyanates receive, for example, modification of carboxylate, sulphonate and/or polietilenoksidnoy, and/or polypropyleneoxide groups. Gidratirovana polyisocyanates may, for example, interaction with monohydroxy the hydrophilic polyether-alcohols in quantities of less theoretical. Obtaining such gidratirovannykh polyisocyanates are described, for example, in European patent application EP-A 0540985 (p.3, line 55 to page 4, line 5).

Well suited also described in European patent application EP-A 959087 (p.3, lines 39-51) containing allophanate groups of the polyisocyanates obtained by the interaction depleted in monomer polyisocyanates with polyethylenepolypropylene in terms of alloantibody. Also suitable are described in the German patent application DE-A 10007821 (from page 2, line 66 to page 3, line 5) water-dispersible mixture of MDI-based triisocyanate, as well as polyisocyanates, gidratirovannye ionic groups (sulphonate, phosphonate groups), such as described in German patent application DE-A 10024624 (p.3, lines 13 to 33).

In principle, it is possible, of course, to use mixtures of different cross-linking resins.

Before, during, or after obtaining a water dispersion of copolymerization according to the invention may be added the usual lacquer technology AIDS and additives, such as defoamers, thickeners, pigments, dispersing agents, catalysts, substances to prevent the formation of films, anticapital or emulsifiers.

These AIDS and additives can also be added to the means for coating containing water dis the version of copolymerization according to the invention.

Water funds for the coating containing aqueous dispersions of copolymerization according to the invention, suitable for use in all areas where used water paint system and coatings with high resistance film. For example, for coating the surfaces of mineral building materials, for coating and sealing (sealing) of wood and wood-based materials, the coating on the metal surface coatings on metals), coating and coating layers containing asphalt or bitumen, varnishing and sealing (sealing various plastic surfaces (coatings on plastics), and varnishes gloss.

Water funds for the coating containing aqueous dispersions of copolymerization according to the invention, suitable for receiving the depleted solvent coatings, fillings pigmented or transparent varnish, transparent lacquers and varnishes gloss, as well as single-layer lacquers, for example, in the field of industrial coating, initial or repair lacquering of automobiles. Particularly suitable aqueous dispersions of copolymerization according to the invention to obtain a transparent water-based varnishes for the initial coating of vehicles, in which the requirement is : particularly high scratch resistance and chemical-resistant.

The object of the invention is also a method of producing coatings, characterized in that the substrate is applied the tool for coating containing a dispersion of copolymerization according to the invention, and then utverjdayut. Thus obtained coating, typically have residual gloss after low tide more than 90%.

When this curing means for coating is usually carried out at a temperature from 0 to 180°C, preferably from 18 to 160°C., particularly preferably from 40 to 140°C.

Coatings can be done in different ways spraying, such as air spray, vacuum or electrostatic spraying using one-component or, perhaps, two-component spray installation. However, varnishes and vehicle coating containing water dispersion hydroxyquinoline of copolymerization according to the invention can also be applied in other ways, for example by brush, rollers or reklami.

Examples

Unless otherwise noted, all percentage data are mass percent.

The viscosity measurement was performed on a cone-plate viscometer Physica Viscolab® LC3 ISO, firms Physica, Stuttgart, Germany according to DIN 53019 at the shift gradient 40-1.

Determination of average particle size was carried out by laser correlation is spectroscopy (Zetasizer® 1000, Malvern Instruments, Hervenberg, Germany).

These hydroxyl number is calculated, based on the monomers used.

Acid number: methods for the determination of = DIN ISO 3682.

Example 1

In mnogogolovy flask with a volume of 4 liters with a stirrer were placed 469 g of 1,6-hexandiol and 454 g of ε-caprolactone, and 0.2 g of tetraisopropyl titanium and heated under a flow of inert gas (nitrogen) through an oil bath to 110°C. Then the reaction mixture was added by nanos 401 g dimethylcarbonate for 15 minutes, then kept at reverse flow another 24 hours. Then the reaction mixture was removed the mixture from dimethylcarbonate and methanol by distillation column at normal pressure, and the oil bath temperature continuously for 7 hours increased from 110°C to 150°C. was Then carried out by lowering the temperature of the oil bath to 100°C. and reducing the pressure to 20 mbar (absolute) with simultaneous removal of methanol and residual dimethylcarbonate. Then the oil bath temperature was increased to 5 hours up to 180°C and kept at this temperature for 2 hours. Then the reaction mixture was cooled to room temperature and was mixed with 0.2 g of dietilfosfat. Got polycarbonatediol with a hydroxyl number 113 mg potassium hydroxide/g

Example 2

Acted as in Example 1 with the difference that in the flask was placed 861 is 1,6-hexandiol and 0.2 g of acetylacetonate ytterbium(III) and filed pump 826 g dimethylcarbonate. Add 0.2 g of dietilfosfat in Example 1 was not conducted.

Got polycarbonatediol with a hydroxyl number 109 mg potassium hydroxide/g

Example 3

Acted as in Example 1 with the difference that in the flask was placed 616 g of 1,6-hexandiol, 1408 g of 1,4-butanediol and 0.2 g of acetylacetonate ytterbium(III) and filed pump 2477 g dimethylcarbonate. Add 0.2 g of dietilfosfat in Example 1 was not conducted.

Got polycarbonatediol with a hydroxyl number 113 mg potassium hydroxide/g

Example 4

In a pressure reactor with a volume of 60 l section of the distillation, agitator and collector (receiver) were placed 34092 g 3-methyl-1,5-pentanediol with 8.0 g of acetylacetonate ytterbium(III), as well as 10223 g dimethylcarbonate at 80°C. Then the reaction mixture was heated in a nitrogen atmosphere for 2 hours to 150°C and kept for 2 hours under stirring with a reverse flow (reflux), and the pressure was increased to 3.9 bar (absolute). After this was removed by distillation product of the cleavage - methanol mixed with dimethylcarbonate, and the pressure was continuously reduced for 4 hours in the whole of 2.2 bar. Then the distillation was stopped and the reaction mass was filed pump still 10223 g dimethylcarbonate at 150°C and kept for 2 h with stirring and with reverse flow, and the pressure was increased to 3.9 bar (absolute). Then t see you a again is removed by distillation product of the cleavage - the methanol in the mixture with dimethylcarbonate, and the pressure was continuously reduced for 4 hours in the whole of 2.2 bar. Then the distillation was stopped and the reaction mixture was filed pump still 7147 g dimethylcarbonate at 150°C and kept for 2 h with stirring and with reverse flow, and the pressure was reduced within 4 h to normal. Then the reaction mixture was heated for 2 hours to 180°C and kept at this temperature and under stirring for 2 hours. Immediately thereafter the temperature was lowered to 130°C. and after the reaction mixture was passed a stream of nitrogen (5 l/h), while the pressure was reduced to 20 mbar. After that, the temperature was increased within 4 h up to 180°C and kept for 6 hours At that implement the additional removal from the reaction mixture of methanol mixed with dimethylcarbonate.

After blowing and cooling the reaction mixture to room temperature received liquid colorless oligocarbonate with the following characteristics:

Mn=675 g/mol; hydroxyl number=166,0 mg potassium hydroxide/g;

viscosity: 6940 MPa·s at 23°C and D:16.

Example 5

In the reaction vessel of 10 l, equipped with a device for mixing, cooling and heating, were placed 600 g polycarbonatediol according to Example 1 and was heated to 143°C. at this temperature for 20 minutes was bury solution of 7.75 the peroxide trebuie in of 7.75 g of Dowanol® PnB. Then they dosaged Monomeric mixture of 81.5 g of 2-ethylhexyl acrylate, 566,5 g hydroxyethylmethacrylate, 435 g of butyl methacrylate, 567,5 g isobutylacetate and 135 g of styrene, and in parallel at the same time they dosaged for 4.5 hours, the solution 27,75 g di-tertBUTYLPEROXY in 34,25 g of Dowanol® PnB. At this temperature, the reaction mixture was stirred for about 20 minutes. After that they dosaged Monomeric mixture of 122.5 g of methyl methacrylate, 172,75 g hydroxyethylmethacrylate, 96 g of butyl acrylate and 46,25 g of acrylic acid, and in parallel at the same time they dosaged for 1.5 hours a solution of 7.75 g of peroxide trebuie in 25 g of Dowanol® PnB. Then was stirred for 1 hour at a temperature of 143°C., then was cooled to 100°C. and was added by 29.25 g of N,N-dimethylethanolamine. After homogenization for 30 minutes was dispersively with 3400 g of water at 80°C for 2 hours. Received a variance of copolymerization with the following characteristics:

The content of hydroxyl groups (solid, calculated theoretically)4,3%
Acid number (solid)14 mg KOH/g
The solids content45,0%
Vascos the ü 850 MPa·s/23°C
PH (10%in water)8,5
The degree of neutralization105%
The average particle size105 nm
The co-solvent1.1 wt.%

Example 6

In the reaction vessel of 10 l, equipped with a device for mixing, cooling and heating, were placed 600 g polycarbonatediol according to Example 2 and heated to 143°C. at this temperature for 20 minutes was bury solution of 7.75 g of peroxide trebuie in of 7.75 g of Dowanol® PnB. Then they dosaged Monomeric mixture of 81.5 g of 2-ethylhexyl acrylate, 566,5 g hydroxyethylmethacrylate, 435 g of butyl methacrylate, 567,5 g isobutylacetate and 135 g of styrene, and in parallel at the same time they dosaged for 4.5 hours, the solution 27,75 g di-tertBUTYLPEROXY in 34,25 g of Dowanol® PnB. At this temperature, the reaction mixture was stirred for about 20 minutes. After that they dosaged Monomeric mixture of 122.5 g of methyl methacrylate, 172,75 g hydroxyethylmethacrylate, 96 g of butyl acrylate and 46,25 g of acrylic acid, and in parallel at the same time they dosaged for 1.5 hours a solution of 7.75 g of peroxide trebuie in 25 g of Dowanol® PnB. Then was stirred those which begins 1 hour at a temperature of 143°C, after which it was cooled to 100°C. and was added by 29.25 g of N,N-dimethylethanolamine. After homogenization for 30 minutes was dispersively with 3625 g of water at 80°C for 2 hours. Received a variance of copolymerization with the following characteristics:

The content of hydroxyl groups (solid, calculated theoretically)4,3
Acid number (solid)15 mg KOH/g
The solids content43,5%
Viscosity400 MPa·s/23°C
PH (10%in water)8,5
The degree of neutralization105%
The average particle size110 nm
The co-solvent1.0 wt.%

Example 7

In a reaction vessel with a volume of 6 liters, provided with a device for mixing, cooling and heating, were placed 600 g polycarbonatediol according to Example 3 and heated to 143°C. at this temperature for 20 minutes was bury solution of 7.75 g of di-tert butyl is eroxide in of 7.75 g of Dowanol® PnB. Then they dosaged Monomeric mixture of 81.5 g of 2-ethylhexyl acrylate, 566,5 g hydroxyethylmethacrylate, 435 g of butyl methacrylate, 567,5 g isobutylacetate and 135 g of styrene, and in parallel at the same time they dosaged for 4.5 hours, the solution 27,75 g di-tertBUTYLPEROXY in 34,25 g of Dowanol® PnB. At this temperature, the reaction mixture was stirred for about 20 minutes. After that they dosaged Monomeric mixture of 122.5 g of methyl methacrylate, 172,75 g hydroxyethylmethacrylate, 96 g of butyl acrylate and 46,25 g of acrylic acid, and in parallel at the same time they dosaged for 1.5 hours a solution of 7.75 g of peroxide trebuie in 25 g of Dowanol® PnB. Then was stirred for 1 hour at a temperature of 143°C., then was cooled to 100°C. and was added by 29.25 g of N,N-dimethylethanolamine. After homogenization for 30 minutes was dispersively with 3625 g of water at 80°C for 2 hours. Received a variance of copolymerization with the following characteristics:

The content of hydroxyl groups (solid, calculated theoretically)4,3%
Acid number (solid)14 mg KOH/g
The solids content43,5%
Vascos the ü 2360 MPa·s/23°C
PH (10%in water)8,5
The degree of neutralization105%
The average particle size130 nm
The co-solvent1.1 wt.%

Example 8

In a reaction vessel with a volume of 6 liters, provided with a device for mixing, cooling and heating, were placed 600 g polycarbonatediol according to Example 4 and was heated to 143°C. at this temperature for 20 minutes was bury solution of 7.75 g of di-tertBUTYLPEROXY in of 7.75 g of Dowanol® PnB. Then they dosaged Monomeric mixture of 595,25 g hydroxyethylmethacrylate, 487,75 g of butyl methacrylate, 692,5 g isobutylacetate and 135 g of styrene, and in parallel at the same time they dosaged for 4.5 hours, the solution 27,75 g di-tertBUTYLPEROXY in 34,25 g of Dowanol® PnB. At this temperature, the reaction mixture was stirred for about 20 minutes. After that they dosaged Monomeric mixture of 102,5 g of methyl methacrylate, 173 g of hydroxyethylmethacrylate, 96 g of butyl acrylate and 75 g of acrylic acid, and in parallel at the same time they dosaged for 1.5 hours a solution of 7.75 g of di-tertBUTYLPEROXY in 25 g of Dowanol® PnB. Then was stirred for 1 hour at ambient temperature the re 143°C, after which it was cooled to 100°C. and was added to 97 g of N,N-dimethylethanolamine. After homogenization for 30 minutes was dispersively with 3500 g of water at 80°C for 2 hours. Received a variance of copolymerization with the following characteristics:

The content of hydroxyl groups (solid, calculated theoretically)4,4%
Acid number (solid)21 mg KOH/g
The solids content44,5%
Viscosity1060 MPa·s/23°C
PH (10%in water)8,5
The degree of neutralization105%
The average particle size94 nm
The co-solvent1.0 wt.%

Example 9 Comparative (European patent application EP-A 0758007, Example 1)

In a reaction vessel with a volume of 6 liters, provided with a device for mixing, cooling and heating, put 116 g butylglycol and 150 g of Desmophen® V218 (easy polyester-based oxide propyl is on and glycerine, hydroxyl number 245 mg potassium hydroxide/g, Bayer AG, Leverkusen, Germany) and heated to 155°C. At this temperature for 2 hours they dosaged 321 g of butyl acrylate, 366 g of styrene and 198 g hydroxyethylmethacrylate and in parallel, they dosaged solution of 17.1 g di-tertBUTYLPEROXY in 28.6 g of butylglycol. Then within 1 hour they dosaged Monomeric mixture of 83 g hydroxyethylmethacrylate, 180 g of butyl acrylate, 139 g of styrene and 34 g of acrylic acid, and in parallel they dosaged solution of 12.9 g of di-tertBUTYLPEROXY 21.4 g butylglycol. After this was stirred for 2 hours at a temperature of from 150 to 155°C., and then cooled to 100°C and was added 50 g of dimethylethanolamine. After 30 minutes of homogenization was dispersively for 2 h at 80°C since 1980 water. Received a variance of copolymerisate with the following characteristics:

The content of hydroxyl groups (solid, calculated theoretically)3,2%
Acid number (solid)18 mg KOH/g
The solids content40%
Viscosity830 MPa·s/23°C
PH (1%in water) 9,4
The degree of neutralization100%
The average particle size51 nm
The co-solvent4.0 wt.%

Example 10 Comparative (European patent EP 947557, Example 3)

In a reaction vessel with a volume of 6 liters, provided with a device for mixing, cooling and heating, put 186 g butylglycol and 186 g of solvent solvent-naphtha (naphtha) and heated to 145°C. At this temperature for 3 hours they dosaged mixture 1) of 750 g of methyl methacrylate, 125 g of styrene, 445 g hydroxyethylmethacrylate, 538 g of butyl acrylate and 87 g of butyl methacrylate and directly after that they dosaged for 1.5 hours the mixture 2) of 128 g of methyl methacrylate, 180 g of hydroxyethylmethacrylate, 100 g of butyl acrylate and 60 g of acrylic acid. In parallel with this for 5 hours they dosaged solution of 88 g of di-tertBUTYLPEROXY in 70 g of a mixture 1:1 of butylglycol and solvent-solvent-naphtha. Then was stirred for 2 hours at a temperature of 145°C, then cooled to 100°C and was added 76 g of N,N-dimethylethanolamine. After 30 minutes of homogenization was dispersively for 2 hours at 80°C With 2700 g of water. Received a variance of copolymerisate with the following characteristics:

The content of hydroxyl groups (solid, calculated theoretically)3,3%Acid number (solid)18 mg KOH/gThe solids content43,8%Viscosity1400 MPa·s/23°CPH (10%in water)8,1The degree of neutralization105%The average particle size110 nmThe co-solvent7.7 wt.%

Example 11 Polyisocyanate crosslinking agent.

In a reaction vessel with a volume of 6 liters, provided with a device for mixing, cooling, heating and consistently dosaged 3500 g Bayhudur® XP 2570 (Bayer AG, Leverkusen) and 1500 g of Desmodur® XP 2410 (Bayer AG, Leverkusen) and homogenized at 30°C for 60 minutes. Then added 37 g of Tinuvin® 384-2 (Ciba, Basel) and 24 g of Tinuvin® 292 (Ciba, Basel) and homogenized for 30 minutes. Got a hydrophilic mixture of polyisocyanates with isocyanate content of 20.1%.

Application example 12

Component a are mixed in a predetermined amount with the addition of Byk® 347 and resbala the tons of water.

Before applying component And the component is dispersed through a nozzle jet disperser according to European patent EP-A 0685544 orifice nozzle 0.4 mm at a pressure of 50 bar. Application of a mixed 2K water-based transparent varnish was carried out by manual spray gun on sheet aluminum (scratch resistant) or mild steel (gemstone), which were previously applied water layer of the filler and the usual initial autolackierung black water main layer of varnish. After application leaves fanned air at room temperature for 5 minutes and then at 80°C for 10 minutes and then dried at 130°C for 30 minutes. The thickness of the dry layer of transparent varnish was about 40 microns.

td align="center"> 40
Table 1
Example 12andbcde
Component awt. partwt. partwt. partwt. partwt. part
Example 10 (compare.) 411,9
Example 9 (compare.)339,9
Example 5356,4
Example 6372,1
Example 7370,4
Byk® 3472,32,22,22,22,3
Water64,4114,098,3100,0USD 114.9
Component
Example 11119,5125,6125,6125,6141,1
Resistance to scratching after 17 h%%%%%
Residual glitter4584838258
Residual gloss after low tide6293939272
The chemical-resistant°C°C°C°C°C
Diest. water3646>68>6836
1%NaOH41444137
1%H2SO43837383936

Scratch resistance

The test of the obtained transparent varnish on the scratch resistance was carried out according to DIN 55668.

Relative residual gloss in % was determined again as the greatest degree of gloss [20°] after scratching according to DIN 5668 compared with the degree of gloss before tarpanam. The higher this ratio, the better the resistance to scratching.

The chemical-resistant

The chemical-resistant expressed in °C. For this purpose, a transparent lacquer coating drops of distilled water or 1%caustic soda or 1%sulfuric acid and thermoablative in a gradient furnace. Determine the temperature at which occur the first visible damage to the transparent lacquer coating. The higher the temperature, the more stable is the coating of transparent varnish.

The example clearly shows that the lacquer dispersions of copolymerization according to the invention have significantly better resistance to scratching (residual gloss after low tide >90%) with very good hemosense than in the AI with products of the prior art.

1. Aqueous dispersion of copolymerization to obtain a coverage that contains
A) one or more hydroxyquinoline of copolymerizate obtained from
a) 53,5-87 wt.% not containing hydroxyl groups, ether with (meth)acrylic acid and/or vinylaromatic connections,
(b) 2,5-45,9 wt.% hydroxyquinoline ether (meth)acrylic acid,
c) 0.6 to 19 wt.% capable of radical copolymerization of ionic and/or potentially ionic monomers, and
d) 0-43,4 wt.% if necessary, the other capable of radical copolymerization of monomers, different from the compounds of components a)to C),
moreover, the sum of all components is 100%,
and
B) at least one hydroxyquinoline polycarbonatediol as a reactive diluent.

2. Aqueous dispersion of copolymerization according to claim 1, characterized in that hydroxyquinoline polycarbonatediol) have an average hydroxyl functionality of from 1.6 to 6 and srednecenovogo molecular weight of from 240 to 5000 Da.

3. Aqueous dispersion of copolymerization according to claim 1, characterized in that hydroxyquinoline polycarbonatediol) based on 1,4-butanediol, 1,6-hexanediol, 3-methyl-1,5-pentanediol or their mixtures.

4. Aqueous dispersion of copolymerization according to claim 1, characterized in that hydroxyquinoline polycarbonatediol) have srednjovekovnog functionality of from 1.9 to 2.05.

5. Water tool for applying coatings containing:
i) one or more aqueous dispersions of copolymerization according to claim 1, and
ii) at least one crosslinking agent capable of interacting with hydroxyl groups.



 

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Road marking paint // 2418022

FIELD: chemistry.

SUBSTANCE: road marking paint contains an acrylic film-forming agent - copolymer of methylmethacrylate and butylmethacrylate - DIANAL BR-116 resin, calcite filler - finely ground white marble Omicarb and micronised calcite filler MK, barite filler - fractionated microbarite Mibari, plasticiser - chloroparaffin KP-470, organic solvent - toluene and ethylacetate, pigment - titanium dioxide, thickener - organic derivative of montmorillonite Bentone SD-2, dispersing agent - mixture of natural phospholipids Soya lecithin, anti-sedimentation agent - 20% solution of emulsion polyethylene resin in xylene M-P-A 2000X, with components in a defined ratio. Chrome yellow and/or technical carbon can also be contained as pigment.

EFFECT: maintaining high level of the rest the of factors.

3 cl, 2 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: powdered UV-curable composition contains 89.5-96.5 pts. wt oligoether(meth)acrylate, 1.0-2.7 pts. wt benzoyl-type photoinitiator, 1.0-1.5 pts. wt flow agent, 0.5-0.7 pts. wt degassing agent and a fluorine-containing modifying additive in form of a solid unsaturated compound with molecular weight of 850-2700 g/mol, obtained through synthesis from p-hydroxyethoxystyrene, diisocyanate in form of 1,6-hexamethylenediisocyanate or isophorone diisocyanate, and perfluorinated oligoester alcohol or oligoester diol with molecular weight of 500-2000 g/mol in amount of 1.0-5.6 pts. wt.

EFFECT: good physical and mechanical properties and obtaining coatings having high wear resistance, low dirt holding, good decorative and protective properties.

2 tbl, 16 ex

FIELD: chemistry.

SUBSTANCE: acrylic paint composition in the first version contains an acrylic film-forming - acrylic organosoluble copolymer Polyform and a copolymer of p-butylmethacrylate with methylmethacrylate, silica filler, thickener - benton or pangel, plasticiser - phthalic ester, pigment and organic solvent. In the second version the acrylic paint composition contains an acrylic film-forming - acrylic organosoluble copolymer Polyform and a copolymer of p-butylmethacrylate with methylmethacrylate and additionally a polyorganosiloxane resin, silica filler, thickener - benton or pangel, plasticiser - phthalic ester, pigment and organic solvent.

EFFECT: improved physical and mechanical properties.

2 cl, 2 tbl

Road marking paint // 2385337

FIELD: chemistry.

SUBSTANCE: road marking paint contains an acrylic filming agent, inorganic filler, a plasticiser, a mixed organic solvent, a pigment - titanium dioxide, a thickener based on organobentonite and a dispersing agent based on lecithin. The inorganic filler used is acid plagioclase in form of particle with size ranging from 12 to 60 mcm with sodium content ranging from 10.50 to 10.60 wt % in terms of Na2O. The paint additionally contains microtalc.

EFFECT: increased resistance of the road mark to prolonged effect of water, salt and alkali.

2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: method is described for preparing gelcoat composition which involves mixing unsaturated styrene polyester resin Kamfest-01 with a surfactant OP-10 and a hardening accelerator NK-2 - cobalt naphthenate in a styrene solution, addition of a soot paste based on unsaturated styrene polyester resin Kamfest-01 and filler Aerosil into the mixture, with subsequent curing and mastication of the obtained mass, obtaining the end product.

EFFECT: obtaining a stable gelcoat which provides for making an opaque decorative layer of high uniformity and opaqueness.

1 cl, 1 tbl

FIELD: construction.

SUBSTANCE: invention relates to cleaning of surfaces made from natural and artificial stones, ceramic materials and may be used for cleaning buildings faces and interiors from atmospheric contamination and for maintenance activities. Method of buildings faces and interiors cleaning includes cleaning with water, drying and applying hydrophobisated compositions in two layers. As soon as the first layer is applied, it is exposed before the second layer application during the time needed for complete hydrophobisated composition absorption. Polysiloxane resin emulsion Tego Phobe 6600 is dissolved in water at ratio 1:4-5 and used as hydrophobisated composition for the first layer. As hydrophobisated composition in the second layer, a composition is used, that contains styrene-acryl dispersion, silicon resin or silicon resins mixture, pigments, disperser, thickener, emulsifier, foam killer, preserving agent, coalescent and water at the stated ratio of components.

EFFECT: cleaning of surfaces and protection from recontamination.

1 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: water-dispersion composition for coating includes acrylic film-forming material - 47-49%, water-acrylic dispersion stabilised with anion system of emulsifier "Finndisp", thinner - silicone dioxide "Aerosil A-300", organic derivative of smectite clays "Benton LT" and acrylic latex "Polyphob TR-117" with dry solids content 40%, pigments, calcite filler, antifoamer - mineral oil - mixture of the unsaturated fatty acids esters with hydrophobic "Foamex K-3" or dispersion of the hydrophobic wax and ester in mineral oil "Serdas 7005", coalescent - esteroalcohol 2,2,4-trimethyl-1,3-pentadiol monoisobutirate "Texanol" and butyldiglicole, dispersant - "Orotan 731K", conservant - solution of isothiazoline derivatives: 1,2-hydroxy-5,8,11-trioxadodecane, 1,3-bis (hydroxydimethyl)-carbamide, 1,6-hydroxy-2,5-dioxahexane "Parmetol A-26", pH regulator - 25% water ammonia solution, antifreeze - ethyleneglycol, surfactant -polyoxymethylene ether of alkylphenol and 75% water solution of anion wetting surfactant agent "Nuosperse 2006", hydrophobic additive - 29-31% wax emulsion "Aquacer -535" and solvent - water at the determined components ratio. The claimed water-dispersion composition for coatings has the film rinsability index 0.7-1.4 g/m2.

EFFECT: enhancing of composition performance.

2 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: acrylic paint system as a acrylic filming agent contains methylmethacrylate copolymer and H-butylmethacrylate resin Degalan LP64/12, and alkyd urethane varnish, dibutylphthalate or chloroparaffine CP-470 as a plasticising agent, pigments, calcite filler, toluene and butylacetate as an organic solvent, organic derivative of montmorillonite Bentone SD-2 as a thickening agent, mixed natural phospholipids Soya lecithin as a dispersant. The system additionally contain antirust pigment Phosmet that is mixed hydrated aluminium and calcium phosphates, or Polyphosmet that is aluminium and calcium polyphosphates compounds, talc as a filling agent, siccative and surface-active substance polymethylsiloxane liquid in the declared ratio.

EFFECT: acrylic system is characterised with high spreading capacity of dry film and static resistance.

2 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: invention relates to paint and varnish industry, in particular to production of paints for carriageway of automobile roads and aerodromes with asphalt, concrete or asphalt-concrete covering. Roadway marking paint contains copolymer of methyl methacrylate and H-butylmethacrylate - resin "Degalan LP 64/12" as acryl film-forming agent, contains as calcite filler finely-crashed white marble Omicarb and micronised kalidit filler MK and additionally contains fractioned microbarite Mirabi, plasticiser- clorparaffin "ХП"-470, organic solvent - toluol and ethyl acetate, pigment - titanium dioxide, thickener - organic derivative of montmorillonite Bentone SD-2, dispersant - mixture of natural phospholipids Soya lecithin, anti-sedimentation preparation - 20% solution of organic compound in xylol "М-П-А-2000Х" with claimed component ratio.

EFFECT: obtaining paint for roadway marking with white colour brightness coefficient 80-85% preserving values of other characteristics at the same level.

2 tbl, 11 ex

FIELD: chemistry.

SUBSTANCE: invention refers to making gelcoat compositions based on unsaturated polyester resins applied as decorative layers of fibreglass products. Disclosed method of preparation of gelcoat composition containing mixed unsaturated styrene polyester resin Kamfest-01, surface-active substance of polyoxyethylated alkylphenol ether "ОП"-10 and hardener cobalt naphthenate CN-2. Then white pigment paste based on unsaturated styrene polyester resin and filler Aerosyl. Thereafter produced mass is held and grinded to make end product.

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2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: polymer material contains acrylic polymer, chlorine-containing polymer and inorganic hydroxide. The acrylic polymer is selected from a homopolymer of alkyl(alc)acrylate or copolymer of alkylmethacrylate and alkylacrylate. The chlorine-containing polymer contains 5-70 wt % halogen. The inorganic hydroxide is selected from magnesium hydroxide, zinc hydroxide or mixtures thereof, except a mixture of magnesium hydroxide and zinc oxide or magnesium hydroxide and zinc stannate. Weight ratio between the chlorine-containing polymer and the acrylic polymer is at least 0.3. Polymer material is obtained by mixing the chlorine-containing polymer and inorganic hydroxide in molten acrylic polymer. The polymer material is used to make articles and structural elements in construction.

EFFECT: inorganic hydroxide gives the material high resistance to atmospheric effects.

45 cl, 3 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention relates to use of granular polyalkyl(meth)acrylate polymers with average particle size V50 from 30 to 70 mcm for increasing fatigue cracking resistance, which contain polyalkyl(meth)acrylate of moulding compounds. The invention proposes use of granular polyalkyl(meth)acrylate polymers with average particle size V50 from 30 to 70 mcm in a moulding compound, containing at least 65 wt % of an impact viscosity modifier obtained beforehand which contains at least one polyalkyl(meth)acrylate phase, at least 8 wt % of the said granular polyalkyl(meth)acrylates and from 0 to 20 wt % polyalkyl(meth)acrylates with molecular weight between 20000 and 350000 g/mol, whereby the sum of wt % of the components a) - c) is equal to 100 wt % to increase fatigue cracking resistance of said moulding compounds. Disclosed also are moulding compounds described above and corresponding moulded articles.

EFFECT: preparation of moulding compounds, extrusion of which enables to obtain fatigue cracking resistant moulded articles with a dull surface, having good strength characteristics.

23 cl, 1 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: invention relates to polymer mixtures for making shock resistant moulded articles. The disclosed polymer mixture for making moulded articles which contains (meth)acrylate (co)polymer components with different molecular weight and viscosity of solution in chloroform, and an impact viscosity modifier based on cross-linked poly(meth)acrylates, having a nucleus/shell/shell structure, whereby the test sample made from the polymer mixture simultaneously possess the following characteristics: Young's modulus of elasticity (ISO 527) of at least 2500 MPa, Vicat softening point VET (ISO 306-B50) of at least 110°C, impact viscosity (ISO 179-2D, perpendicular the layers) of at least 30 kJ/m2, flow melt index MVR (ISO 1133, 230°C/3.8 kg) of at least 1.0 cm3/10 min. The invention also discloses articles injection moulded from the said polymer mixture, use of the polymer mixture to obtain moulded articles and versions of using the obtained moulded articles.

EFFECT: design of thermoplastic material with a balanced profile of characteristics.

14 cl, 1 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to technology of polymer composite materials based on polyethylene terephthalate, particularly to making thin-walled articles like plastic cards. The described material contains the following in wt %: polyethylene terephthalate or polyethylene terephthalate based copolymer - up to 100, polymethacrylate as a modifying additive 1-50 and synthetic wax selected from amide, ester, polyethylene wax 0.05-1.5. The material also contains a thermal and a thermo-oxidative decomposition stabiliser, a colouring additive, an olefin polymer or copolymer and a functionalised olefin polymer or copolymer having carboxyl and epoxy groups.

EFFECT: material enables to make articles with better mouldability, impact viscosity of the material increases 2-3 times compared to existing materials.

4 cl, 1 tbl, 21 ex

FIELD: medicine, pharmaceutics.

SUBSTANCE: declared invention concerns hydrogel compositions useful as a dressing material or protective agent, and for application of a wide range of active substances in relation to the skin and tissues of mucosas, such as mouth, including tooth bleaches. The faza-parted, film-forming composition containing an admixture is offered: (a) the first polymer bulking up in water, and the specified polymer is not dissolved in water at pH less than approximately 5.5, or water-soluble polymer; (b) an admixture of hydrophylic polymer and additional low-molecular polymer, capable to formation of hydrogen communications with hydrophylic polymer; (c) the second polymer bulking up in water, and the specified polymer we will not dissolve in water at all value pH; and (d) unessential active substance, in a dissolvent or in an admixture of dissolvents where the composition is exposed to separation of phases at hydration.

EFFECT: treatment of a disease state of various surfaces of a body (teeth, fingernails, skin, mucosas etc).

44 cl, 7 ex

FIELD: medicine.

SUBSTANCE: composition contains water-swelling, water-insoluble polymer, mixed hydrophilic polymer and complementary oligomer able to form hydrogen bond with hydrophilic polymer, and a bleaching agent, preferentially peroxide. The composition is applied a dental bleaching composition and applied on teeth to be bleached, and then removed as the required bleaching is reached. In best versions the composition is unstable and translucent. There are also methods of preparation and application of the compositions.

EFFECT: reduced dental sensitivity and damage or irritation of gums and oral mucous membranes, improved clinical effectiveness.

54 cl, 10 ex

FIELD: chemistry.

SUBSTANCE: proposed method of producing a water and oil repellent agent involves emulsification of (a) 15-85 wt % perfluoroalkylethylacrylate, (b1) 5-65 wt % 2-ethylhexylmethacrylate and (b2) 1-40 wt % benzyl methacrylate in the presence of (c) a cation surface active substance of the polyethylene oxide adduct type, or neutralised organic acid compound of an amine, with polyethylene oxide chains, and (d) compounds based on polypropylene glycol, with molecular weight 300-3000, or hexylene glycol, with subsequent copolymerisation reaction in the presence of a polymerisation initiator, and mixing the obtained aqueous dispersion with (e) blocked isocyanate.

EFFECT: satisfactory water and oil repellent for synthetic and natural fibre.

5 cl, 22 ex, 5 tbl

FIELD: chemistry.

SUBSTANCE: invention refers to technology of hull-kernel particles which can be used to modify impact strength of poly(met)akrylate moulding compositions. According to method a) water and emulsifier b) are added with 25.0 to 45.0 mass fractions of the first composition containing A) alkylmetacrylate 50.0 to 99.9 mass fractions, B) alkylakrylate 0.0 to 40 mass fractions, C) cohesive monomers 0.1 to 10.0 mass fractions, and D) styrene monomers 0.0 to 8.0 mass fractions, and polymerised, c) added 35.0 to 55.0 mass fractions of the second composition containing E) (met)akrylates 80.0 to 100.0 mass fractions, F) cohesive monomers 0.05 to 10.0 mass fractions, and G) styrene monomers 0.0 to 20.0 mass fractions, and polymerised, d) added 10.0 to 30.0 mass fractions of the third composition containing H) alkylmetakrylates 50.0 to 100.0 mass fractions I) alkylakrylates 0.0 to 40.0 mass fractions and J) styrene monomers 0.0 to 10.0 mass fractions, and polymerised. Method is distinctive in that e) each polymerisation cycle is performed at temperature within 60 to 90°C and f) fractional content of all substances is selected so that total weight A) to J) per total weight of aqueous dispersion exceeds 50.0 mass %. Presented method is used to produce impact strength modifiers minimum content of which provides sufficient improvement of impact strength when tested on cut moulding composition samples, not degrading at the same time other important properties of moulding composition.

EFFECT: production of impact strength modifiers minimum content of which provides sufficient improvement of impact strength when tested on cut moulding composition samples, not degrading at the same time other important properties of moulding composition.

17 cl, 8 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to impregnation and hermetisation of porous products with thermally hardened compositions based on (meth)acrylic monomers. Claimed is thermally hardened composition for impregnation and hermetisation of porous products, containing (in mass fraction): 100 (meth)acrylic monomer, 0.1-0.5 nitronitrile, 0.01-0.04 hydrohynone, 0.004-0.03 disodium salt of ethylendiaminetetraacetic acid, 0.001-0.03 2,2,6,6-tetramethyl-4-oxopiperidin-1-oxyl and 0.5-5.0 non-ionogenic emulsifying agent. Method of impregnation and hermetisation of porous products includes their vacuum processing with further impregnation under vacuum and atmospheric pressure with abovementioned composition and hardening at temperature ≥90°C. Thermally-hardened composition has higher serviceability and allows to increase productivity of impregnation and hermetisation method essentially.

EFFECT: increasing productivity of method of impregnation and hermetisation of porous products by means of thermally-hardened compositions.

2 cl, 1 tbl, 15 ex

FIELD: technological processes.

SUBSTANCE: present invention relates to the technology of modifiers production on the basis of nuclear-shell type particles used for production of molding such as films, pipes, mirror housings etc. from poly(meth)acrylates. The nuclear-shell type particle consists of a nucleus, the first shell and, if required, the second shell that on every single case consist of alkylmetacrylate and styrene recurring units with minimum glass-transition temperature of 30°C. The said particles are produced by multistage emulsion polymerisation.

EFFECT: invention ensures implementation of the process with minimum labour costs and small investments for commercial deployment.

15 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to polymer composite materials, particularly a method of producing a nanocomposite based on a liquid crystal polymer and an inorganic semiconductor which can be widely used in laboratory experiments and in industry. The invention discloses a method of producing a nanocomposite which involves mechanical treatment of a solution of a liquid crystal polymer of the type poly-4-(n-acryloyloxyalkoxy)benzoic acid of formula: , where n=3-12, until interchain bonds of the polymer break.The solution is mixed with nanoparticles of the inorganic semiconductor coated with a low-molecular weight organic ligand which contains the same functional group as the polymer and is selected from a group of fatty acids. The obtained mixture is held, chemically bonded nanoparticles are formed and separated and the solvent is distilled off. The inorganic semiconductor used is cadmium selenide, cadmium sulphide or lead sulphide. The fatty acid used is oleic or palmic or linoleic acid.

EFFECT: disclosed method enables to obtain nanocomposites based on liquid crystal polymers which contain nanoparticles of inorganic semiconductors which are included in the volume of the composite in an ordered manner.

2 cl, 4 dwg, 3 ex

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