Heat-activated paint composition

FIELD: thermo-setting heat-activated paint compositions, application of such composition on substrate.

SUBSTANCE: proposed composition contains at least one amorphous binder at Ts below 5C and/or at least one crystalline or semi-crystalline binder at melting point or interval of melting points below 150C, at least one epoxy resin, at least one polyamine including cyanamide groups, at least one blocked or latent catalyst in the amount of 0.5-5 mass-%; this catalyst is deblocked or activated at elevated temperature below hardening temperature of paint composition. Paint composition is characterized by Ts below 5C and viscosity below 2000 mPa·sec measured at temperature of 80C and shift rate of 10 c-1. The method of application of coat to substrate includes the following stages: first, paint composition is heated to temperature of application, then, composition is applied on substrate and paint thus applied is heated to temperature of its hardening till complete hardening. Paint composition is used for application onto mirror reverse surface, onto metal surface or onto substrate sensitive to heating. This composition forms thin anti-corrosive coat free from volatile organic compounds which may be used at temperature of application between 100 and 160C by employing the methods of application at low temperatures.

EFFECT: enhanced efficiency.

15 cl, 3 tbl, 9 ex

 

This invention relates to thermosetting, termolehisest composition of paint and method of application of such thermolysis compositions of paints. Thermocline composition of the ink generally first heated up until not achieved the viscosity required for application. Then the composition is applied and utverjdayut, for example, additional temperature rise to the temperature of curing. Basically thermocline coating essentially do not contain volatile organic compounds (VOCS).

In EP-A 0604815 described thermosetting solvent-covering composition for screen printing. The coating composition consists of a mixture of liquid and solid epoxy resins and has a higher viscosity, which makes this cover the composition unsuitable for use in the methods of application requiring low viscosity, such as coating watering.

Methods of application, such as coating irrigation are especially useful when you need to apply thin layers. A concrete example of application, requiring the production of thin film layers, is the reverse side of the mirror, when the coat should be applied on the reverse side of the reflective metal layers of the mirrors to protect them from corrosion and mechanical and chemical influences. These cover the back side see the feces is usually applied in one or more layers, having a thickness of the order of about 20-100 microns.

So far, the ink composition used in the methods of application requiring low viscosity, such as coating the reverse side of the mirror, described in EP-A 0562660 contain solvents. However, the use of solvent-containing compositions of paints faces are always in the more serious problems associated with the environment. For reasons connected with the environment, as well as for economic reasons, the solvent content should be minimized. To achieve the anticorrosive properties of the coating of the reverse side mirrors typically include corrosion inhibitors, most of which are harmful to human health or to the environment.

The object of this invention is the provision of a coating composition essentially without LOS, which can be used at temperatures of drawing between 100 and 160°With or even lower temperatures, using application methods that require a low viscosity, such as coverage irrigation or coating spray.

The object of this invention is achieved by termolehisest composition of paint with TC below 5°C, preferably below -20°and a viscosity below 2000 MPa·C, preferably below 600 MPa·measured at 80°s at shear rate 10 s- . It was found that such thermocline composition, in contrast to previously known thermolysis paints, suitable for application methods that require a low viscosity without the addition of solvents. As a result of low viscosity, termolehisest paint composition according to this invention can be used relatively low application temperatures, such as below 120°With, yet retaining the good properties of the paint, such as fluidity and appearance. The composition of this invention can be, for example, solid or liquid at room temperature.

In a preferred variant embodiment of termolehisest paint composition according to this invention the composition includes at least one amorphous binder with TC below 5°C, preferably below -20°and/or at least one crystalline or semi-crystalline binder having a melting point or interval melting point below 150°C. semi-crystalline and/or crystalline binders are typically characterized by an acute phase change, resulting in a very low melt viscosity after melting. You can also use combinations of amorphous and semi-crystalline binders. By combining amorphous binders with polycrystal the ical binders melt viscosity of termolehisest composition of the paint can easily be brought to the desired level. Optionally, the binder may have a hyperbranched or dendritic structure.

To test whether binding substance is crystalline, semi-crystalline or amorphous, these types of phase changes can be determined using differential scanning calorimetry (DSC), as described in Encyclopedia of Polimer Science and Engineering, Volume 4, pages 482-519, 1986 (Wiley Interscience). It is believed that the binder is an amorphous, if it shows a distinct glass transition temperature (Tg = TC) and has no peaks no crystallization or melting. It is believed that the resin is semi-crystalline, if it shows visible to the Vehicle and at least one melting peak. Basically, when there are different melting peaks in the DSC, these multiple peaks are determined by the melting interval. If the binder does not demonstrate any Vehicle when heated from -60°and only has a sharp melting peak, it is believed that the binding material is crystalline.

Binder, termolehisest composition of the coating can be, for example, alkyd resin, acrylic resin, polyester resin, urethane oil or urethane resin, a vinyl polymer, vinylchloride polymer phenolformaldehyde resin, amenomori, epoxy resin, or their modifications, and/or a combination of the I.

The binder is or semistructured or used in conjunction with an appropriate crosslinking agent, such as, for example, blocked or non-blocked isocyanates or amidofunctional cross-linking agents. Suitable examples amidofunctional crosslinking substances are, for example, melamineformaldehyde resin, such hexamethoxymelamine (HMMM), or tricarbocyanines (TACT), or their derivatives. Commercially available HMMMM resins are, for example, Beetle®370, Beetle®3745 and Beetle®3747, all available from BIP. Suitable isocyanates are, for example, Desmodur®N3300, available for purchase from Bayer, and Vestanat®T1890 available for purchase from Creanova.

Binders, reacting these isocyanate or amidofunctional cross-linking agents are, for example, hydroxyquinoline binder. Preferred hydroxyquinoline binders are acrylic polyols, polyether polyols and polyol polyesters. Examples of suitable amorphous polyol polyesters are Desmophen®670, 800, 1155 and Desmophen®VPLS 2249/1, all available for purchase from Bayer. A suitable example of a dendritic polyol is Boltorn® H10 available for purchase from Perstorp Specialty Chemicals.

The polyol/isocyanate structured system, as such, are highly reactive. The right way to prevent premature curing is the use of internally or externally blocked isocyanates. An example of internally blocked polyisocyanate cross-linking substance is a cycloaliphatic polyurethan based isophorondiisocyanate, even low temperature cure powder®EP-BF 1320, available for purchase from Creanova.

Thermoclean the composition may contain at least one amino, preferably, in combination with one or more polyamines having cyanamide group, preferably dicyandiamide.

Another way of preventing premature structuring of such highly reactive cross-linking systems is the use of two-component systems that require separate storage of reactive components and special equipment to apply. The reactive components are mixed together immediately prior to application or during application, for example, in a two-component spray bottle. This two-part device is suitable not only for isocyanate/polianovich structuring of systems using non-blocked isocyanates, but also for other highly reactive article is octorara systems, for example, epoxy/amine and acryloyl/amine structural systems.

Thermoclean composition can be a component of a two component system containing either one or more of the cross-linking substances, or binder. In particular, two-component system may include a first component containing a polyisocyanate crosslinking agent, and a second component containing one or more binders having isocyanate-reactive groups.

Thermocline compositions based paint polyol/isocyanate chemistry have the advantage of a combination of low VOC content or even zero VOC content with a high level of operational characteristics of the film. Such thermocline composition of the coating are particularly suitable for use, for example, in the industry of restorative painting of cars and vehicles.

Another class of suitable binders consists of epoxy resins, optionally in combination with compounds containing epoxidation groups, such as amines, polycarboxylic acids and/or anhydrides.

Particularly suitable epoxy resins are, for example, Epikote®828, Epikote®1001 and Epikote®1002. Thick epoxy resin such as Epikote®1004, should, preferably, use is to be made in small quantities to obtain the necessary viscosity. All of the above resin Epikote available for purchase from Shell Chemicals.

If termolehisest paint composition according to this invention is enabled epoxy resin, it is preferable to use a compound containing cyanamide groups and/or derivatives such as dicyandiamide, accelerated dicyandiamide, substituted dicyandiamide or cyclic amidine. Cover the back side of the mirrors, made with cyanamide functional compounds have the advantage that they can form a complex with silver ions present in the reflective layer of the mirror, especially if the layer does not contain copper. This improves the corrosion properties of the coating. Adding anti-corrosion pigments in this case can be reduced or even eliminated. Dicyandiamide gives the best results in this respect. When using cyanamide groups and/or derivatives thereof in the composition of the inks according to this invention when applied to the rear surface of the mirror there is improved adhesion to the silver layers. This gives the possibility of obtaining coating the reverse side of the mirror without Milanovich functional compounds that are typically used in known prior art systems to improve the adhesion.

The composition can be brought heart and soul is my melt viscosity by optimizing binding such as molecular weight and molecular structure. Preferably, the average molecular weight Mn of the binder or binders is 1000-g/mol, more preferably, is between 2000 and 6000 g/mol.

Another method of regulating the viscosity of the composition is the use of reactive diluents. Reactive diluents are typically compounds with low molecular weight, low viscosity, and act as solvents during preparation of the formulation during manufacture of the coating.

Unlike non-reactive solvents, reactive diluents may copolymerisate with a binder or other component present in termolehisest composition. The average molecular weight Mn of the reactive diluents is basically equal to less than 1000g/mol, preferably below 500 g/mol. The number of functional groups, the functionality of the reactive solvent is at least one, preferably two or more, and in this case, reactive solvents can act as an amplifier structure. Examples of suitable reactive solvents are glycidyloxy ethers of low viscosity, alkalescency, oxetane, epoxydecane oils, polyols and/or their modifications, such alkoxycarbonyl the polyols. Approach asimi examples glycidyloxy esters are cyclohexenyltrichlorosilane ether, such as Araldite®DY 0395, and trimethylolpropane ether, such as Araldite®DY 0396, and two product Araldite®available for purchase from Ciba Specialty Chemicals. Suitable examples of polyols are detromethorphan and alkoxysilane polyols, such as Polyol TP30®available for purchase from Perstorp Specialty Chemicals. Suitable examples of allencaron.com are ethylene carbonate resulting and propylene carbonate.

The composition according to this invention essentially contains no VOCS. In principle when preparing the composition, the additional solvent is added. In addition, the residual solvent content originating from the production process of any of the ingredients should not exceed 5% by mass.

As introduced above, the structured reactive systems can be used in two-component thermolysis systems. However, thermoclastie coatings are easier to apply in the form of one-component systems, using a crosslinking agent which reacts with the binder only at a temperature above the temperature of application. For such systems it is important a good balance between chemical stability and reactivity.

If the chemical stability is not optimal, for example, because of too high internal reactance, the structure of rirovanie could occur prematurely, i.e. prior to coating on the substrate, which leads to difficulties with equipment for applying and bad coverts properties.

Good chemical stability, which is the result of low reactivity, may be too slow curing to meet regular needs. The choice of catalyst depends on the chemistry of structuring in termoklejem composition. By choosing a suitable catalyst can be obtained a good balance between chemical stability and reactivity. If you are using the catalyst, it is preferably present in amount of 0.5-5 wt.% from the total mass of the preparation. The optimum amount of catalyst is 1-3 wt.% by weight of the total composition. Depending on the type of chemistry structuring termolehisest composition coating the catalyst could be acid, base, or combination thereof.

Preferably, the catalyst is latent or blocked catalyst, which is activated or activated at elevated temperature below the temperature of curing of the composition of the paint, for example, blocked or latent amine. The use of latent or blocked catalyst is an effective way to prevent premature structuring. For regulatory activity can be used by different mechanisms and lock the matter of substance, such as alcohols, water, volatile acids and UV degradable compounds. The catalyst may be, for example, unlocked increasing temperature. A relevant example of this is Diaz[4,3,0]billones-7-ene, blocked benzoic acid or formic acid as described in U.S. patent No. 5219958. Another catalyst which is activated when heat is, for example, Dyhard®UR 500, which is a catalyst based on amine, blocked isocyanate. This type of catalyst is particularly suitable for balancing chemical stability and reactivity of termolehisest composition of the coating based on epoxy resin and polyamine, such as dicyandiamide. Suitable latent catalysts are, for example, amino acid derived anhydrides of carboxylic acids and diamines. When heated these zwitterionic amino acids undergo thermally induced intramolecular cyclization to imides which can catalyze different reactions.

The preparation of these latent amine catalysts described in the Latent Amine Catalysts for Epoxy-Carboxy Hybrid Powder Coatings. Investigations on Phase Change Control of Reactivity by S.P. Pappas, V.D. Kuntz and B.C. Pappas, Journal of Coatings Technology, Vol.63, No. 796, May 1991.

If the composition is based on the mechanism of structuring caused by acid, such amino/paleologou structuring, to the position of the cover can, not necessarily, include an acid catalyst. Examples of acid catalysts are paratoluenesulfonyl acid and dodecylbenzenesulfonic acid. An example of a blocked acid catalyst is Nacure®3525 available for purchase at King Industies, which is based dinonylnaphthalenesulfonic acid.

Thermoclean the coating composition according to this invention may contain pigments and/or additives such as fillers, dispersing funds, degassing means, adhesion promoters, matting agent, a surfactant, fluidity promoters or waxes.

Described thermoclean composition of the coating can be made using equipment generally known in the art paint industry. Mostly all raw materials, with the exception of cross-linking agents and catalysts are mixed together in a high-speed tank for dissolving at room temperature or at elevated temperature. At optional next stage pigments dispersed in the apparatus for high-speed dispersion, such as tropolitaine machine or sand mill. And finally, add a cross-linking substance and an optional catalyst, and all mix to obtain a homogeneous mixture. In cases where the time to the beat between the reactive components must be minimized, you can use the equipment for dispersion with a short term presence. A suitable apparatus, where the reactive components can very effectively be mixed within a short period of time, is an extruder or other equipment based on the rotor/stator technology.

Thermoclean composition of the paint can be applied by a method comprising the following stages:

- heating the composition until, until you reach the temperature of application;

- applying the composition as a coating on the substrate, and

- heating the coating to at least the temperature of curing to achieve full cure.

Stage heating can, for example, be implemented in heated containers, after which the composition is fed into the device for applying the coating.

Thermoclean paint composition according to this invention is particularly suitable for application methods requiring low viscosity, such as floor watering, and heated composition flows through a narrow horizontal slit on the substrate, passing below the slit. Other methods of application requiring low viscosity, which can be used in the coating composition are, for example, methods with heated shaft or hot spray. Heated rollers, for example, are used for applying coil coatings. If W is lateline, you can also use other methods of application, when the viscosity is less important values, such as paint.

In the case of two-component systems components preferably are heated separately. The heating composition may be carried out in any apparatus for heating or melting. The heated composition can be fed to the apparatus for applying heated through the pipe using a suitable pump. When using two-component system prior to application components can be mixed in a suitable apparatus for mixing of melts, which may be a static mixer or a dynamic mixer such as a Bunbury mixer or mixer with Z-shaped blades. Alternatively, the components may be mixed during application. The temperature of the applicator will mainly be in the range from 50 to 160°C, preferably from 60 to 120°C. For thermal curing of the composition of the applied coating, the curing temperature can be up to 260°and should preferably be in the range of 60 to 170°C, depending on the chemical composition, the type of substrate used and the application.

The curing time, basically, is less than 30 minutes. In special cases, the curing time may be very short, as in coil coatings, when the hole is Denia can be ultra-fast curing for 2 minutes or less at 260° With PMT (peak (maximum) temperature of the metal).

The coating composition according to this invention can be applied in thin layers. The thickness of the layer after curing can be, for example, less than 100 microns.

A wide range of substrates can be coated, termolehisest paint composition of the present invention. Due to the low viscosity of the melt, covering the composition can be applied on metal and glass substrates, for example, the back surface mirrors, and also on temperature sensitive substrates such as plastic and wood. The composition of this invention can also be used for coil coatings.

Although thermoclean the coating composition is particularly suitable for use as coating the back side of the mirrors, it is also suitable for any other use, when, for example, required a smooth thin, high-performance layers, or when it is desirable to use application methods that require a low viscosity. A concrete example is the spray application of 2-component polyol/isocyanate systems as a top coating on metal or plastic substrates.

The invention is additionally illustrated by the following examples. In these examples, the following compositions are commercially available, where indicated.

Araldite®DY 0396trimethylolpropane ether with TC below -50°; available for purchase from Ciba Specialty Chemicals;
Baysilon®OL 17The substance giving fluidity, available from Bayer;
Beetle®370hexamethoxymelamine

resin not containing a solvent having a TC below -50°available for purchase at the BIP;
Benzoindegassing tool available

to purchase from DSM, the Netherlands;
Byk®And 530regulating the fluidity of the tool, commercially available from Byk;
Byk®165dispersing agent, commercially available from Byk;
Desmophen®670amorphous polyetherpolyols with Tc below -50°S, commercially available from Bayer;
Desmophen®VPLS 2248amorphous polyetherpolyols with Tc -50°and viscosity, 154 MPa at 70°s at shear rate equal to 10-1commercially available from Bayer;
Desmophen®1155amorphous polyetherpolyols with TC -50°S, and a viscosity equal to na at 70°s at shear rate equal to 10-1commercially DOS is available from Bayer;
Desmodur®N3300the polyisocyanate with TC below -50°; commercially available from Bayer;
Dyhard®100SFdicyandiamide, commercially available from SKW Trostberg AG;
Dyhard®UR 500blocked amine catalyst, commercially available from SKW

Trostberg AG;
Epikote®828the epoxy-functional resin having a TC below -50°; commercially available from Shell Chemicals;
Epodil 750disfunctionally glycidylether with TC below -50°; commercially available from Air Products;
Kronos®2310pigment, titanium dioxide, available for purchase at Kronos International Inc.
Nacure®3525dinonylnaphthalenesulfonic acid catalyst available from King Industries,
Polyol TP®30ethoxylated, trimethylpropane, reagent-diluent commercially available from Perstorp Specialty Chemicals.

In the examples used the following abbreviations:

DBTL (DBTDL)dibutylamine dilaurate
FA/DEP (PA/DEP)the amino acid on the basis of phthalic anhydride and N,N-diatreme is Propylamine;
TCthe glass transition temperature

In the examples, all quantities of content are given in grams, unless otherwise specified.

Examples 1-7

In examples 1 to 7 thermocline compositions of the coatings were made from raw materials shown in table 1.

Table 1
Raw materialsApp.1PRPRPRPRPRPR
Epikote®82810250,1335337264,5317,6372
Beetle®37076,626,8
Desmophen®1155113,339,7
Desmophen®670113,339,7
Dyhard®100SFthe 17.337,237,742of 37.830
On the IOL TR ®305418,926,517,7
Araldite®DY 039630,316,7
Epoxitiolan-

Noah Flaxseed oil
52,7
Talc192192192192192192192
Barium sulphate144,2144,2144,2144,2144,2144,2144,2
Kronos®231037373737373737
Black coal3333333
Zinc oxide192192192192192192192
Cyanide lead5555555
Byk®1654 2424442424
Benzoin9,69,66,96,94
DBCTL1,61,6
Dyhard®UR 5006,217,618,8a 12.717,6
Nacure®35257,7
FA/DEP12
Butyldiglycol40
Epodil®75041

In examples 2 to 6, Epikote®828 was used as the main binder, whereas in example 1 was used only a small amount Yes the aqueous compounds as adhesion promoter.

Beetle®370 and Dynard®100 SF was used as crosslinking agents in these compositions. DBCTL, Dynard®UR 500, Nacure®3525 and F/DEP used as catalysts.

All raw materials, with the exception of cross-linking agents and catalysts, were first mixed together in a high speed apparatus for dissolving at room temperature or elevated temperature.

Then the pigments were dispersible in tropolitaine car at 2500 rpm for 40 minutes at room temperature. After that we added cross-linking agents and catalysts, and all was stirred for 10 minutes at 2500 rpm

Compositions of examples 1 to 7 were heated to a temperature of 80°when the viscosity was low enough for the application, and then sprayed on the back side of the mirror at a temperature of 80°and utverjdali in the infrared thermostat air circulation within five minutes at a temperature in thermostat 150°C.

The following research methods were used to determine the viscosity and TC tracks:

Viscosity (80°s, 10 s-1)ISO 53229
Cuneutered.DSC, 10°C/min

Film properties were tested using the following methods:

table width="90%" border="1" cellpadding="0" cellspacing="0" frams="none"> GlossISO 2813, the angle measurement represented 85°;AdhesionISO 2409The hardness according to PersozISO 1522Cuhotwired. filmDSC, 10°C/min

Edge corrosion was investigated in accordance with the test for CASS as specified in ISO 1456, and by testing with salt spray, presented in DIN 50021. Resistance to water vapour was investigated in accordance with the test humidity industrial standard DIN 50017.

The results are shown in the following table.

Table 2
TestApp.1PRPRPRPRPRPR
Thickness (µm)36556340354040
Adhesion0000000
Persoz (C)93304300320308314300
Gloss(%)78100100100100100 100
CASS test (Mat)NoNoNoNoNoNoNo
CASS test (spot)LittleNoNoNoNoNoNo
CASS test (edge corrosion in mm)400100100150150200150
Test humidity (matte)NoNoNoLightLightLightNo
Test humidity (bubbles)NoNoNoNoNoNoNo
Spraying salt (matte)NoNoNoNoNoNoNo
Spraying salt (edge corrosion in mm)30015015040402020
Viscosity

(MPa·)
436683938537365631500
TC neatware.
/br> (°)
-50-27-21-23-38-36-40
TC resp. film (°)187910978829385

Example 8

In example 8 the composition according to example 2 was obtained without cyanide lead. Edge corrosion test CASS was 400 μm.

Example 9

Two thermoclean composition coating

Two termolehisest composition coating was obtained in the following way. In the apparatus for dissolving received the first component And from 35,08 g Desmophen®VPLS 2248; 0.2 g Byk®And 530; 0.1 g Baysilon®and 0.1 g DBTL at a temperature of 70°C.

Separately, a second component consisting of 64,52 g Desmodur®N3300, was heated to a temperature of 70°and mixed with the first component And directly before application. The mixture was sprayed on phosphatidycholine steel panel (Bonder®26S60 OC) and utverjdali at 60°C for 30 minutes. The dry thickness was about 50 μm.

Used the following test methods:

ShockASTM D 2794-93
MEK resistanceISO 2812

Gloss, Cuneuteredthe components the same As, Cuhotwired. filmand the viscosity of the components a and b before mixing investigated in accordance with the methods used for examples 1 to 8.

The obtained clear coating had the properties shown in table 3.

Table 3
TestResult
Viscosity (80°s, 10 s-1) the component100 MPa·
Viscosity (80°s, 10 s-1component65 MPa·
Shock160 kg/m
Gloss100 %
Cuneuteredcomponent< -50°
Cuhotwired. film40,2°
MEK resistance> 200 double s

1. Thermosetting thermoclean paint composition, characterized in that

thermoclean the paint composition has a TC below 5°S, and a viscosity below 2000 MPa·measured at 80°s at shear rate 10 s-1;

the composition comprises at least one amorphous binder with TC below 5°and/or at least one crystalline or semi-crystalline binder, having the e melting temperature or range of temperatures melting below 150° C;

the composition contains at least one epoxy resin and at least one polyamine having cyanamide group;

the composition contains at least one blocked or latent catalyst in the amount of 0.5-5 wt.%, moreover, the catalyst is released or activated at elevated temperature below the temperature of curing of the composition of the paint.

2. The composition according to claim 1, characterized in that it contains at least one amorphous binder with TC below -20°and/or at least one crystalline or semi-crystalline binder having a melting temperature or range of temperatures melting below 150°C.

3. The composition according to claim 1 or 2, characterized in that it contains at least one epoxy resin and dicyandiamide.

4. Composition according to claims 1, 2 or 3, characterized in that it contains at least one blocked or latent catalyst in the amount of 1-3 wt.% of the total weight of the composition.

5. The composition according to claim 1, characterized in that the blocked or latent catalyst is blocked or latent amine.

6. The composition according to claim 5, characterized in that the latent amine catalyst is an amino acid derived from anhydrides of carboxylic acids and diamines.

7. Composition according to any one of the previous is the corresponding points, characterized in that it contains at least one amino, preferably, in combination with one or more polyamines having cyanamide group, preferably dicyandiamide.

8. Composition according to any one of the preceding paragraphs, characterized in that it is a component of two-component system containing either one or more of the cross-linking substances, or binder.

9. The composition according to claim 8, characterized in that the two component system includes a first component containing a polyisocyanate crosslinking agent, and a second component containing one or more binders having isocyanate-reactive groups.

10. Composition according to any one of the preceding paragraphs, characterized in that it contains a reactive diluent.

11. The composition according to claim 10, characterized in that the reactive diluent selected from the group including a simple glycidyloxy esters, epoxydecane oils, polyols or their modifications.

12. The method of coating the substrate termolehisest paint composition according to any one of preceding claims 1 to 11, comprising the following stages:

heating the composition to a temperature deposition;

coating compositions in the form of a coating on the substrate; and

heating the deposited ink, at least up to the temperature of curing is about a complete cure.

13. The method according to item 12, wherein thermoclean composition flows through a narrow horizontal slit on the substrate, passing below the slit.

14. The application of the paint composition according to any one of claims 1 to 11 as covering the reverse surface of the mirror.

15. The application of the paint composition according to any one of claims 1 to 11 for coating metal or heat sensitive substrate.



 

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Gluing composition // 2275405

FIELD: glues compositions and materials.

SUBSTANCE: invention proposes gluing composition comprising the following ratio of components, mas. p. p.: epoxy diane resin, 30-40; monofunctional oligoester epoxide, 8-10; trifunctional oligoester epoxide, 8-10; tricyclocarbonate polyoxypropylenetriol, 12-15; low-molecular polyamide resin, 18-20, hardening agent of amine type, 7-10, and filing agent, 10-15. Invention provides enhancing relative stretching elongation value of the composition in retention of its high strength and adhesion indices. Invention can be used in gluing heterogeneous materials with different expanding temperature coefficients in units subjecting to high vibration and impact loads and effect of temperature from -150°C to 200°C.

EFFECT: improved and valuable properties of composition.

6 ex

Glue composition // 2271377

FIELD: adhesives.

SUBSTANCE: invention relates to compositions based of synthetic high-molecular weight compounds and, in particular, to composition comprising polyurethane-based preparation DESMOCOLL, perchlorovinyl resin, epoxide resin, aliphatic-series polyamine, and polar organic solvent.

EFFECT: enabled retention of high elasticity of glue joint and considerably increased gluing strength for siloxane-coated materials, kapron fabrics, and glass cloth.

1 tbl

FIELD: glue materials.

SUBSTANCE: invention relates to a method for preparing glue epoxide composition based on modified epoxy resin with a hardening agent of amine type. The composition comprises the following ratio of components, mas. p. p.: modified epoxy resin, 90-110, and hardening agent, 60-75. As modified epoxy resin epoxy organosilicon resin in furylglycidyl ester - SEDM-3P is used, and adduct of butyl methacrylate with diethylenetriamine - DTB-2 is used as a hardening agent. Invention provides the development of the composition showing stability against multiple impacts and to enhance heat-transferring capacity in the range of cryogenic temperatures. Proposed composition can work at cryogenic temperature and can be used in making optical-electronic devices, among them, cooled photodetectors under conditions of multiple thermal impacts.

EFFECT: improved and valuable properties of composition.

2 tbl, 6 ex

FIELD: glue compositions.

SUBSTANCE: invention relates to high strength heat-stable cold hardening glue compositions and can be used in articles of aircraft equipment and in other branches of industry. The composition comprises epoxide base and oligoamide-base hardening agent, mixture of epoxy resins as epoxide base, and oligoamide as a hardening agent representing product of polycondensation of dimerized methyl esters of higher unsaturated dicarboxylic acids of electrochemical synthesis and polyethylene polyamine or its mixture with [4,4'-(N,N'-bismaleimide)]diphenylmethane or with oligoimide, and additionally it comprises an elastifying additive - low molecular copolymer of butadiene and acrylic acid nitrile with terminal chlorobenzyl groups or chlorine-containing reaction resin and catalyst. Invention provides enhancing strength of glue joints in temperature shifts below 300°C, enhanced water resistance and tropic resistance and able to work at temperature 300°C for 50 h.

EFFECT: improved and valuable properties of composition.

3 cl, 2 tbl, 1 ex

FIELD: polymer materials as protective coatings.

SUBSTANCE: invention relates to preparing anticorrosion, fire-resistant, and heat-retention composition for use in oil and gas production industry, petrochemical industry, in municipal economy and other areas, where protection of surfaces against corrosion, heat, and inflammation are required as well as to application of composition as protective coating for metal, concrete, and, in particular, for protection of pipelines operated in permafrost regions, under water surface, and at large temperature and pressure gradients inside and outside pipelines. Composition is composed of 5-95% epoxide resin, 3-65% hardener, 5-95% hollow microspheres, and 0-20% auxiliary additives. Hollow microspheres are selected from group consisting of glass hollow microspheres, ceramic hollow microspheres, polymeric microspheres, hollow man-made microspheres and mixtures thereof. Microspheres are dimensioned within a range 10 to 500 μm with loose density between 650 and 50 kg/m3.

EFFECT: improved performance characteristics of coatings.

2 cl, 1 tbl, 6 ex

FIELD: polymer materials and corrosion protection.

SUBSTANCE: invention relates to anticorrosive protection of articles, units, and constructions made of ferrous metals, concrete, and reinforced concrete operated under corrosive aqueous and oil-containing media conditions. Composition contains butadiene-styrene thermoplastic elastomer (DST-30R-01) as film-forming component, indene-cumaron resin and epoxide dian resin (ED-20) as adhesive additives, phenyl-2-naphthylamine as amine-type antioxidant, xylene and/or toluene as organic solvent, polymethylsiloxane liquid (PMS-200) as spreading agent, and mixture of cobalt, manganese, and lead octoates as thixotropic additive in the form of 45-55% solution in white spirit or petroleum solvent Nefras C4-155/200, wherein mass percentage of lead is 15.0-15.5% and summary mass percentage of cobalt and manganese is 2.0-2.4%. Composition is thixotropic so that coating with thickness of nondrip wet layer 1.0-1.3 mm may be applied.

EFFECT: increased oil resistance in media of water-saturated petroleum products.

2 tbl

FIELD: polymer materials and corrosion protection.

SUBSTANCE: invention relates to technology of anticorrosive protection of internal surfaces vehicles and stationary metal and concrete storehouses exposed to chemical and abrasive action of loose mineral fertilizers. Composition contains butadiene-styrene thermoplastic elastomer (DST-30R-01), epoxide dian resin (ED-20), indene-cumaron resin, phenyl-2-naphthalene, polymethylsiloxane liquid (PMS-200), pigment filler "Prokal", chromium oxide, tetrabutyl orthotitanate, and organic solvents: toluene and/or xylene. Proposed composition can be applied at negative temperatures and temperature below dew point while anticorrosive coating formed therefrom is less inflammable and is stable in media of wet loose mineral fertilizers.

EFFECT: reduced inflammability and increased resistance to wet loose mineral fertilizers.

2 tbl

FIELD: special compositions and covers.

SUBSTANCE: invention relates to applying anti-corrosive and anti-friction covers. Invention describes a composition used in preparing covers by autophoresis method and this composition comprises the following components: polytetrafluoroethylene F-4D 57% aqueous suspension, copolymer of tetrafluoroethylene with hexafluoropropylene F-4MD 53% aqueous suspension, oxyethylated alkylphenol, filling agents - titanium dioxide, ground mica, technical carbon of sort K-354, aerosil of sort AA taken in the ratio = 2:1:1:0.3, respectively, solvents - 1,4-butanediol, butyl cellosolve and xylene taken in the ratio = 1:0.7:0.7, respectively, polyvinylpyrrolidone, polymethylphenylsiloxane 30% solution in toluene, ortho-phosphoric acid, amino-derivatives of benzimidazoles: 2-(1-methyl-2-pyrrolyl)-5-aminobenzimidazole, 1,2-dimethyl-5,6-diaminobenzimidazole dihydrochloride, 2-(n-methoxyphenyl)-5-aminobenzimidazole and water taken in the claimed ratio of components. Invention provides absence of pores in cover, enhancing wear resistance and corrosion-protective properties of cover.

EFFECT: improved and valuable technical properties of composition and covers.

2 tbl, 4 ex

FIELD: corrosion protection.

SUBSTANCE: invention provides homogenous corrosion-inhibiting composition, which contains 20-30% water-soluble phosphate, 5-20% starch, and balancing amount of zeolite and/or schungite, said water-soluble phosphate being selected from alkali or alkali-earth metal phosphates, orthophosphates, and dihydrogenorthophosphates, in particular dipotassium phosphate. Composition may further contain sodium or potassium silicofluoride. Composition is of especial importance for use as corrosion inhibitor for solid antiicing agents based on inexpensive and accessible chlorides, particularly magnesium chloride.

EFFECT: increased efficiency and stability of protective properties and duration of effect, especially on building and road-building materials.

1 tbl

FIELD: chemistry of polymers, chemical technology.

SUBSTANCE: invention relates to a polymeric composition designated for anti-corrosive protection of petroleum-gas-pipelines, metal constructions, equipment used in different techniques and as impregnating compositions, hermetic agents and others. The composition comprises the following content mas. p. p.: epoxy diane resin, 100; epoxy aliphatic resin. 24-60; oligoether cyclocarbonates with the mass part of cyclocarbonate groups from 18 to 29, 1-30; froth breaker, 0.5-2.5; coal resin, 0.75-2.0; ether epoxide "Penta-539", 0.5-8; filling agent, 1.5-8.5, and amine hardening agent, 40-85. As an epoxy aliphatic resin the invention uses oligoether epoxides with the content of epoxy group from 7.5% to 28%. As froth breaker the invention uses silicone froth breaker or siloxane resin, or an acrylic froth breaker. Ether epoxide "Penta-539" represents product of esterification of epoxy resin and saturated carboxylic acid. As amine hardening agent the invention uses a mixture of product (A) that is prepared by interaction of aromatic amine (B) with salicylic acid (C) and a plasticizing agent (D) representing an oxygen-containing compound from polyol group and taken in the ratio B:C:D = (73:2:25)-(42:8:50), respectively, and an organosilicon amine (E) in the ratio A:E = (99:1)-(1:99). The invention provides enhancing the rupture strength value, relative rupture elongation value, adhesion to steel, water resistance, to reduce water absorption being both in the parent and after prolonged effect of water state, and to reduce the viscosity value without using solvents also.

EFFECT: improved, enhanced and valuable properties of composition.

2 tbl, 9 ex

FIELD: building industry and materials.

SUBSTANCE: invention proposes a polymeric composition comprising the following components, mas. p. p.: polysulfide oligomer, 100; unsaturated polyester resin PN-1, 90-100; aerosil, 5-20; organic peroxide, 3-20; cobalt naphthenate 10% solution in styrene, 2-4, and 2,4,6-tris-(dimethylaminomethyl)-phenol, 0.5-1. The composition provides preparing covers with enhanced strength properties, adhesion to substrates and showing hydroinsulating properties, resistance against effect of acid and alkali solutions and improved technological procedure for their applying. Invention can be used in preparing hydroinsulting, sealing and anti-corrosive compositions processed by pouring and spraying method.

EFFECT: improved and valuable properties of composition.

2 tbl

FIELD: special compositions.

SUBSTANCE: invention relates to methods for applying anticorrosive and antifriction covers. Invention describes a composition used for preparing covers by autophoresis method that comprises 57% aqueous suspension of polytetrafluoroethylene F-4D, 53% aqueous suspension of copolymer of tetrafluoroethylene with hexafluoropropylene F-4MD, highly dispersed powdery fluoroplastic of index mark F-4MBP, hydroxyethylated alkylphenol, filling agents - titanium dioxide, ground mica muscovite, technical carbon of index mark K-354, aerosil of index mark AA taken in the ratio = 2:1:1:0.3, respectively, and solvents - furfuryl alcohol, butyl cellosolve, xylene taken in the ratio = 1:0.7:0.7, respectively, polyvinylpyrrolidone, 30% solution of polymethylphenylsiloxane in toluene of index mark KO-08, ortho-phosphoric acid, polyvinyl alcohol as 1% solution and water in the claimed ratio of components. Invention provides absence of pores in cover, enhancing wear resistance and corrosion-protective properties of cover.

EFFECT: improved and valuable technical properties of composition and cover.

1 ex

FIELD: operation of hydraulic turbine plants.

SUBSTANCE: proposed method includes cleaning surfaces from crust, preliminary treatment and application of coat made from polymer material, epoxy or polyurethane, for example at thickness of 30% of maximum depth of pits at isolated located of pits and 60% when pits adjoin one another. As a result, efficiency is increased by 1.5 to 2.5%.

EFFECT: enhanced efficiency of hydraulic turbine plant.

3 cl, 3 dwg

FIELD: anti-corrosion materials, pigments.

SUBSTANCE: invention describes an anti-corrosion pigment comprising alkaline-earth element and aluminum tertiary phosphate of the general formula: AExAly(PO4)z wherein AE means alkaline-earth element; x, y and z mean mass of ions AE+2, Al+3, PO4-3 and wherein the ratio x:y:z = (29.8-53.8):(2.7-4.1):(43.5-66.1), respectively, in wt.-%. In the claimed percent ratios of ionic masses the proposed pigment shows the higher degree of dispersion and covers made of its base have higher corrosion resistance.

EFFECT: improved and valuable properties of pigment.

2 tbl, 6 ex

FIELD: chemical industry; other industries; production of the polymeric coatings on the substrates by the baking for cure.

SUBSTANCE: the invention is pertaining to the polymeric coatings produced on the substrates by the baking for cure. The technical result of the invention is development of the varnishes for the baking for cure, which are mainly detach the harmless products and make the solid coatings resistant to the action of the dissolvents. The invention presents the coatings produced on the substrates by the baking for cure of the mixture consisting of 1 mass share of styrene copolymer and the allyl alcohol treated with diisocynotams with the contents of the OH-group from 1 up to 10 %; 0.05-1 mass share of the oxalic acid; 0.2-5 mass share of the organic solvents and, if necessary, of pigments and the auxiliary components for the varnishes, at the temperatures from 120°С up to 250°С and durations of the baking for cure from 1 up to 200 minutes. The produced coatings have the high hardness and positive stability to the action of the dissolvents. At that during the baking for cure only the dissolvent and water are separated.

EFFECT: the invention ensures development of the varnishes for the baking for cure, which are mainly detach the harmless products and make the solid coatings resistant to the action of the dissolvents.

1 cl, 5 ex

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