Powder material for making coats and functional coat for protracted operation at high working temperatures

FIELD: powder materials for making coats of items during protracted operation at high working temperatures.

SUBSTANCE: proposed powder material contains the following components: from 40 to 65 mass-% of at least one solid epoxy resin which is semi-functional relative to thermal cross-linking by epoxy groups at equivalent mass of epoxide from 380 to 420 g/eq and ICI viscosity of melt at 150C from 2800 to 5000 mPa·s and softening temperature from 95 to 105C (A); from 15 to 35 mass-% of at least one solid linear epoxy resin on base of bisphenol A , AD and/or F whose functionality relative to thermal cross-linking by epoxy groups is equal to 2 maximum; from 15 to 30 mass-% of inorganic filler (b) and from 1 to 10 mass-% of at least one hardener. Powder material is applied on metal bases and are thermally cross-linked or hardened.

EFFECT: enhanced parameters of elasticity, wear resistance, resistance to scratching; enhanced water prooofness and corrosion resistance of coat.

12 cl,, 2 tbl, 4 ex

 

The present invention relates to a new powder material for coating. The invention relates also to new functional coatings, suitable for their application at appropriate based primarily on steel tubes for long-term operation at high operating temperatures.

Powder materials, which provide the coating with the glass transition temperature Twithabove 120°and are therefore considered suitable for continuous operation at high operating temperatures, known as the product D.E.R. 6508 information guide Dow Plastics, published in February 2000, Such powder materials for coating containing a solid epoxy resin D.E.R. 6508 equivalent weight of epoxide from 380 to 420 g/EQ., with a melt viscosity at 150°determined by the method of the company ICI (ICI-viscosity), from 2800 to 5000 MPa·and with a softening temperature of from 95 to 105°C.

In the specified information directory presents, in particular, compositions of the following structures:

1. Composition 1

epoxy resin D.E.R. 650877,6 wt.%
amine hardener
(product Casamid®783 company Thomas Swan)2.4 wt.%
titanium dioxide 5 wt.%
barium sulphate14 wt.%
product BYK®360P
(polyacrylate additive company Byk Chemie)1 wt.%

The glass transition temperature Tccoverage is 161°C.

2. Composition 2

product D.E.R. 6508with 46.6 wt.%,
product D.E.R. 624U (amoxilativana
Novolac resin)31 wt.%
product Casamid®7832.4 wt.%
titanium dioxide5 wt.%
barium sulphate14 wt.%
product BYK®360P1 wt.%

The glass transition temperature Tccoverage is 143°C.

3. Composition 3

/table>

The glass transition temperature Tccoverage is 126°C.

In accordance with this above the glass transition temperature Tcthese known coatings allow us to conclude about their suitability for continuous operation at high operating temperatures. However, these coatings are characterized by a lack of elasticity and too low content of fillers and inorganic pigments. However, it is the presence of the coatings high elasticity gives them a high resistance to mechanical stress, which is of great importance especially when laying provided with a coating of pipes, for example in the construction of pipelines. The high content of fillers and inorganic pigments can improve the resistance of coatings to abrasion and scratching and reduce the cost of raw materials.

The present invention was based on the task to develop a new powder material coating, which would not have the disadvantages known from the prior art materials and foremost would be obtained at the respective bases are designed for continuous operation at high operating temperatures of functional coverage, which would have a high elasticity, wear resistance, resistance to scratching and water resistance and high ant the corrosion effect and which would be higher content of inorganic pigments and fillers, without worsening their important performance properties. Moreover, it is a higher content of inorganic pigments and fillers in new pavements should have a positive impact on the set of their properties.

In accordance with this invention proposes a new powder material coating containing, calculated on the whole of its mass:

(A) from 40 to 65 wt.% at least one polyfunctional about thermal crosslinking by epoxypropan solid epoxy resin with an equivalent weight of epoxide from 380 to 420 g/EQ., ICI-melt viscosity at 150°from 2800 to 5000 MPa·and a softening temperature of from 95 to 105°C

(B) from 15 to 35 wt.% at least one solid linear epoxy resin based on bisphenol A, AD, and/or F, the functionality of which about thermal crosslinking by epoxypropan maximum equal to 2

(B) from 15 to 30 wt.% inorganic filler

(D) from 1 to 10 wt.% at least one hardener.

In the following description of the new powder material for coating called "proposed in the invention material for coating".

In addition, the invention offers designed for continuous operation in high temperature coatings for respective bases, the resulting heat is th crosslinking (curing) proposed in the invention material for coating and hereinafter referred to as "proposed in the invention coatings".

The fact that proposed in the invention, the material for coating and proposed in the invention coating can solve the put in the basis of the invention the task is, given the level of technology unexpected and not obvious to a person skilled in this field. At this unexpected is first and foremost the fact that the use of polyfunctional solid epoxy resin (A) in combination with a maximum of bifunctional solid epoxy resin (B) can significantly increase the content in the proposed invention the coating of inorganic fillers (C) and inorganic pigments (G) without deterioration of their performance properties. Proposed in the invention coating despite the higher content of inorganic fillers and inorganic pigments have been found, a high glass transition temperature Tcand high elasticities and highly suitable for continuous operation at high operating temperatures. Proposed in the invention coatings due to their optimal performance properties are especially suitable for application on steel pipes for pipelines designed to transport hot fluid.

The first major component of the proposed invention the material the material for the coating is at least one solid epoxy resin (A), which is a polyfunctional about thermal crosslinking by epoxypropan. The concept of "multifunctional" means that the functionality of the epoxy resin (A) is more than 2. Epoxy resin (A) has an equivalent weight of epoxide from 380 to 420 g/EQ., ICI-melt viscosity at 150°from 2800 to 5000 MPa·and the softening temperature of from 95 to 105°C. the Content of the epoxy resin in the proposed invention the material for the coating is from 40 to 65 wt.%, preferably from 40 to 60 wt.%, most preferably from 42 to 55 wt.%, in each case, in terms of the whole mass proposed in the invention material for coating.

Epoxy resin (A) are conventional and known compounds and can be produced, for example, under the trademark D.E.R®. 6508 company Dow Plastics.

The second main component of the proposed invention the material for the coating is at least one solid linear epoxy resin (B) based on bisphenol A, AD, and/or F, primarily on the basis of bisphenol A. the functionality of the epoxy resin (B) with respect to thermal crosslinking by epoxypropan maximum is 2. The content of such epoxy resins in the proposed invention the material for the coating is 15 to 35 wt.%, preferably from 16 to 34 wt.%, most prepost the tion from 20 to 30 wt.%, more preferably from 18 to 32 wt.%, in each case, in terms of the whole mass proposed in the invention material for coating.

It is preferable to use oligo - or polyglycidyl esters of these bisphenol, especially bisphenol A. These epoxy resin (B) can be obtained, as is well known, the interaction of epichlorohydrin with bisphenolate. Some examples suitable for use according to the invention epoxy resin (B) described in the application FR 2394590 And, p.4, lines 20-36, in the Japan patent H5-63307 B2 or catalog Römpp Lexikon Lacke und Druckfarben, published by Georg Thieme Verlag, Stuttgart, New York, 1998, section Epoxidharze", cc.196 and 197.

The third key component of the proposed invention the material for the coating is at least one inorganic filler (C). Its content in the proposed invention the material for the coating is from 15 to 30 wt.%, preferably from 15 to 28 wt.%, most preferably 15 to 25 wt.%, in each case, in terms of the whole mass proposed in the invention material for coating.

As an example, inorganic fillers () can be called chalk, calcium sulfate, barium sulfate, silicates such as talc, mica or kaolin, crystalline silica, known for example from EP 0693003 B1, p.3, lines 26-39, oxides, such as hydroxide of al the MINIA or magnesium hydroxide or nanoparticles (i.e. particle sizes are in the nanometer range) on the basis of silicon dioxide, aluminium oxide hydrate, aluminum oxide or zirconium oxide. Other examples of such fillers are additionally described in the Handbook Römpp Lexikon Lacke und Druckfarben, published by Georg Thieme Verlag, 1998, s further, section "Füllstoffe".

Preferred is barium sulfate.

The content of at least one curing agent (D) in the proposed invention the material for the coating is from 1 to 10 wt.%, preferably from 1.5 to 5 wt.%, most preferably from 2 to 4 wt.%, in each case, in terms of the whole mass proposed in the invention material for coating.

As the curing agent (G) can be used in the usual and well-known phenolic hardeners (G), known, for example, from patent US 6096807, column 2, lines 21-45, or from UR 0693003 B1, page 2, line 59 to page 3, line 10.

However, you can also use the usual and well-known amine hardeners (G), known, for example from a textbook Johan Bieleman, "Lackadditive", published by Wiley-VCH, Weinheim, New York, 1998, Chapter 7.2.4.2 Epoxy-Amin-Systeme", cc.265-267.

In addition, the proposed invention the material for the coating may contain at least one inorganic pigment (D) in an amount of preferably from 0.5 to 10 wt.%, more preferably from 1 to 6 wt.%, most predpochtitelno 1.5 to 5 wt.%, in each case, in terms of the whole mass proposed in the invention material for coating.

As an example, inorganic pigments (D), suitable for use in the composition proposed in the invention material for coating, can be called white pigments such as titanium dioxide, zinc white, zinc sulfide or lithopone, black pigments such as carbon black, iron manganese black or spinel black, colored pigments, such as chromium oxide, chromoxerert green, cobalt green or green ultramarine, cobalt blue, ultramarine blue or manganese blue, purple ultramarine or cobalt violet and manganese pigments, red micaceous iron pigment, sulphoselenide cadmium red, molybdate or red ultramarine, brown micaceous iron pigment, mixed brown pigment, spinel and corundum phases or orange crowns or yellow micaceous iron pigment, Nickel titanium yellow pigment, yellow, chromium titanium pigment, cadmium sulfide, cadmium sulfide-zinc, yellow crowns or bismuth Vanadate. It is preferable to use titanium dioxide, optionally in combination with micaceous iron pigments.

In addition, we offer in the invention, the material for coating may include at least one generally included in with the Tav powder paint materials additive (E) in an amount of preferably from 0.01 to 5 wt.%, preferably from 0.01 to 2 wt.%, in terms of the whole mass proposed in the invention material for coating.

As examples of such additives (E), is usually included in the powder paint materials include catalysts for phenol curing, which are described, for example, in EP 0693003 B1, p.3, lines 11-25, and catalysts for amine curing, which are known, for example from a textbook Johan Bieleman, "Lackadditive", published by Wiley-VCH, Weinheim, New York, 1998, Chapter 7.2.4.2 Epoxy-Amin-Systeme", cc.265-267. The catalysts (E) may already be included in the appropriate commercially available hardeners (G).

Other examples are suitable for application in the manner described above additives (E) serve as a means of facilitating spreading or pouring of paint, such as polyacrylates, additives that improve the slip additive that improves the fluidity (flowability), and means facilitating the removal of air, such as benzoin.

Proposed in the invention, the materials for coating get known methods (see, for example, information guide BASF Lacke+Farben AG, "Pulverlacke", 1990, as well as the prospect of BASF Coatings AG, "Pulverlacke für industrielle Anwendungen", January 2000, cc.26 and 27) by homogenization and dispersion, for example, by using an extruder, a screw mixer or other suitable hardware. Then the size castelbolognese powder paint material is brought to the desired by grinding with optional subsequent sorting of particles by size by air classification and sieving. For grinding, you can use a Supplement that promotes the grinding, such as Aerosil. The particle size of the proposed in the invention materials for coating may vary within wide limits and is determined primarily by the ultimate goal of applying a coating. Preferably, the particle size of materials for coating ranged from 10 to 500 μm, more preferably from 20 to 400 μm, most preferably from 25 to 300 μm, especially from 30 to 200 microns.

Proposed in the invention, the material for coating highly suitable for receiving proposed in the invention coatings by thermal crosslinking (curing).

The method of coating of the invention materials to appropriate basis not linked to any technological features and involves the use for this purpose is conventional and known devices and methods described, for example, in Handbook of BASF Lacke+Farben AG, "Pulverlacke", 1990, in the prospectus of the company BASF Coatings AG, "Pulverlacke für industrielle Anwendungen", January 2000, cc.26 and 27, or in the patent US 6096807, column 3, cc.44-60.

Method of heat curing proposed in the invention material for coating after its application on the basis of also not associated with any technological characteristics and implies the t use for this purpose, for example, gas furnace. However, the Foundation before applying it proposed in the invention material is preferably heated to a temperature at which the material is melted and sewn (cures). When applying the proposed invention materials on metal, especially steel, foundations can also be subjected to induction heating. The temperature of the staple when it is preferably from 150 to 260°S, more preferably from 160 to 240°S, most preferably from 180 to 240° (see also US patent 6096807, column 3, cc.44-60).

Proposed in the invention coatings due to their optimum performance properties can be used in a variety of areas, which are described, for example, in the journal "Coatings Partner - The Magazine of BASF Coatings - Powder Coatings Special", 1/2000.

Proposed in the invention coating is most preferable to apply to steel pipes, primarily for steel pipe intended for the construction of pipelines.

The glass transition temperature Twithproposed in the invention coating is preferably from 130 to 150°S, more preferably from 130 to 145°S, most preferably from 130 to 140°C. as a result, such coverage without any problems capable for a long period of operation to withstand the operating tempo of the atmospheric temperature from 80 to 130° Without loss of such properties as resistance to mechanical stress, elasticity, water resistance, adhesive strength and anti-corrosion effect.

Proposed in the invention, the coating can be a single layer. Their thickness is preferably from 250 to 1000 μm, more preferably from 300 to 900 μm, most preferably from 350 to 900 microns.

Proposed in the invention, the coating can also be used as a primer multilayer coating consisting, for example, of a layer of primer and at least one layer, preferably at least two layers selected from the group comprising increasing the adhesive strength of the layers of polyolefin layers and insulating polyurethane layers and layers obtained from other conventional and well-known powder materials for coatings based on epoxy resins. Coatings of this type are preferably applied to the pipelines. So, for example, proposed in the invention, the coating may consist of a primer that improves the adhesion strength of the layer and polyolefin layer, as described in EP 0693003 B1, primarily on p.4, line 21-48, or in WO 32/03234 And, p.6, line 21, to page 11, line 30, and page 11, line 33, to p.21, line 6, including 1.

Proposed in the invention of the coating when applied to pipes, primarily on the pipeline is, able without any problems for a long period of operation to withstand high operating temperatures without deterioration of such properties under the action of the prevailing soil conditions, as the resistance to mechanical stress, elasticity, water resistance, adhesive strength and anti-corrosion effect. Thanks to that proposed in the invention coating can significantly increase the service life of pipelines.

Examples

Examples 1-4

Getting proposed in the invention materials 1-4 forcoating and proposed in the invention coatings 1-4

To obtain the proposed invention materials 1-4 coating included in their composition components (A), (B), (C), (D), (D) and (E) as shown in table 1 quantities were mixed, was extrudible, crushed and classified (by size), resulting in the obtained powder coating materials with such particle size and the distribution of particles by size, which is usually characteristic of powder paints and varnishes used for coating on steel pipes.

product D.E.R. 6508of 50.4 wt.%
phenolic hardener
(product D.E.H. 85 Dow)29,2 wt.%
2-Mei0.4 wt.%
titanium dioxide5 wt.%
barium sulphate14 wt.%
product BYK®360P1 wt.%
Table 1
The composition proposed in the invention materials 1-4 coating
The components is NT Examples
1234
DOW D.E.R. 6508a)53,1648,343,443,4
Epikote®1007b)20253030
Grilonit®H88071C)3.04 from2,92,8-
Epikure®143FFg)---2,8
Blanc Fixe®Nd)20202020
the titanium in the rutile modification Titan Rutil R 900e)2222
Bayferrox®920g)1111
Byk®360 RUBC)0,80,80,80,8
density (g/cm3)and)1,461,461,461,46
Notes:

a)multifunction solid epoxy equivalent weight of epoxide from 380 to 420 g/EQ., the melt viscosity at 150°from 2800 to 5000 MPa·temperatures of RASMAG is of from 95 to 105° C;
b)commercially available solid linear epoxy resin based on bisphenol a firm Shell;
C)commercially available amine hardener company Grilon;
g)commercially available amine hardener company Shell;
d)the filler is barium sulfate;
e)commercially available titanium dioxide pigment;
g)commercially available micaceous iron pigment from Bayer AG;
C)commercially available additive based on polyacrylate company Byk Chemie;
and)the densitometer type AccuPyk 1300.

Proposed in the invention, the coating 1 was obtained from material 1 is proposed in the invention, the coating 2 was obtained from material 2, proposed in the invention, the coating 3 was obtained from material 3, as proposed in the invention, the coating 4 was obtained from material 4.

Proposed in the invention, the materials 1-4, has been found eminently suitable for coating on steel pipes used for the construction of pipelines. With a pipe diameter of 300 mm and a wall thickness of 12 mm was subjected to purification installation for abrasive-blasting about what abode to purity grade SA 3. After such processing, the height of the roughness profile of the surface was 50 μm. Then the tube was heated using an inductor to 230°C. Materials 1-4 was applied electrostatically with a layer thickness of about 500 μm and was subjected to curing. Neither coats nor in their curing did not occur any problems.

Proposed in the invention, the coating was applied to the corresponding experimental panel, which determined the gelation time, and performed tests on the extract for the Eriksen, bend test on the edge of the table and bending the strip tests, electrochemical corrosion, defined the parameters of moisture absorption, conducted impact test and determined the indicators Shine and spreading. The glass transition temperature Twithwas determined by differential thermal analysis. The results obtained are presented in table 2.

Table 2
The basic performance characteristics proposed in the invention coatings 1-4
PropertyExample
1234
The gelation time (180°C), (C)a)525352 43
The test steel sheet thickness of 0.5 mm on the hood by Eriksen and bending the edge of the tableb)
The curing conditions:
3 min at 160°0,2 about0,2 about0,2 about0,2 about
6 minutes at 160°0,7 about0,7 about0,7 about0,7 about
9 min at 160°4.8 x4.8 x5.7 x6.0 x
12 min at 160°6.5 x6.5 x7.0 x7,5 +
15 min at 160°7,5 +7,5 +7,7 +6,9 +
The glass transition temperature Twith(°)139,34137,18133,53133,21
Layer thickness (μm)from 70 to 82from 76 to 86from 77 to 95from 75 to 86
The gloss at an angle of 60° (units)10010010098
Spreading (curing conditions: 10 min at 180°)moderate 3moderate 3moderate 3the mind is i.i.d. 3
Test panels with thickness 10 mm bendingC)
Layer thickness (μm)360420430500
The bend during the bending block (4%)++++
The rate of foaming232-33
The test panelsC)10 mm thickness on the electrochemical corrosion (-1,5 relatively calomel electrode)
The depth of subsurface corrosion (mm)
after 28 days at 22°43,5-43,5-44
after 2 days at 65°2,52,522-3
after 14 days at 65°4343,5-4
after 2 days at 140°C2-322-2,52-2,5
sand bath
Shutter panelsC)10 mm thickness (coating thickness of from 400 to 500 μm) in water n and 80°
Moisture absorption (wt.%)
after 240 h1,711,76a 3.872,30
after 504 h2,222,454,072,69
through 744 h1,91,844,22,85
after 1008 h2,022,155,483,79

PropertyExample
1234
The test panelsC)thickness of 10 mm on the cobg):
point 1: layer thickness (μm)440520430520
kg×cm50505050
point 2: layer thickness (μm)410460450510
kg×cm60606060
point 3: layer thickness (μm)370450340420
kg×cm7 706565
point 4: layer thickness (μm)380410410420
kg×cm807570(70)
point 5: layer thickness (μm)380440370440
kg×cm80757565
point 6: layer thickness (μm)400420400450
kg×cm(90)8080(65)
point 7: the layer thickness (µm)450490430540
kg×cm70(70)(80)60
point 8: layer thickness (μm)470500450540
kg×cm(75)60(65)(60)
Notes:

a)the gelation time was determined with the help of the device Coesfeld;

b)"on" refers to the cracking of the coating, "x" denotes the formation of hairline cracks, "+" denotes the absence of defects;

C)became the main panel was subjected to abrasive blasting through the device Wheelabrator GH 40 to purity grade SA 2,5, steel panels pre-kept at 240°C, after which they were applied coating, was kept for 120 s at 240°and immediately cooled in water;

g)indicators of the impact test specified without parentheses correspond to coatings without damage,

indicators of the impact test specified in parentheses correspond to coatings with injuries,

the value of kg×cm" corresponds to the product of the mass of the falling body (ball with a diameter of 16 mm and a mass of 1 kg) drop height.

Presented in table 2, the results indicate that the proposed invention in coating 1-4 along with a high glass transition temperature Twithpossess high elasticity, resistance to mechanical stress and corrosion resistance and only a small moisture absorption.

1. Powder material coating containing, calculated on the weight

(A) from 40 to 65 wt.% at least one solid epoxy resin, which is a polyfunctional about thermal crosslinking by epoxypropan, with an equivalent weight of epoxide from 380 to 420 g/EQ., with ICI-melt viscosity at 150°from 2800 to 5000 MPa·and with a softening temperature of from 95 to 105°C

(B) from 15 to 35 wt.% at least one solid linear epoxy resin is as the basis of bisphenol A, AD and/or F, the functionality of which about thermal crosslinking by epoxypropan maximum equal to 2

(B) from 15 to 30 wt.% inorganic filler, and

(D) from 1 to 10 wt.% at least one hardener.

2. The material for coating according to claim 1, characterized in that it is calculated on the whole of its mass contains

(D) from 0.5 to 10 wt.% at least one inorganic pigment.

3. The material for coating according to claim 1 or 2, characterized in that it is calculated on the whole of its mass contains

(E) from 0.01 to 5 wt.% at least one of the additives used in the composition of powder paints and varnishes.

4. Coverage for long-term operation at high operating temperature, applied to the corresponding metal base and derived from a powder material for coating according to any one of claims 1 to 3 by thermal crosslinking or curing.

5. The coating according to claim 4, characterized in that its glass transition temperature TC is between 130 to 150°C.

6. The coating according to claim 5, characterized in that the operating temperature for long term use is from 80 to 130°C.

7. The coating according to any one of claims 4 to 6, characterized in that it is single-layer.

8. The coating according to claim 7, characterized in that its thickness ranges from 250 to 1000 microns.

9. The coating according to any one of claims 4-, characterized in that it is a primer of the multilayer coating.

10. The coating according to claim 9, characterized in that the multilayer coating consists of a primer and at least one layer selected from the group comprising increasing the adhesive strength of the layers of polyolefin layers, insulating polyurethane layers and layers derived from other powder materials for coatings based on epoxy resins.

11. The coating of claim 10, wherein the multilayer coating comprises a primer that improves the adhesion strength of the layer and the polyolefin layer.

12. The coating according to any one of claims 4 to 11, characterized in that the base are steel pipes.



 

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The invention relates to a method for producing a weather-resistant powder coatings on metallic or non-metallic surfaces by applying powder cladding composition with subsequent melting and solidification, which apply powder cladding composition comprising hydroxyl and/or carboxyl containing polyester resin with acid structural units exclusively or primarily on the basis of aromatic dicarboxylic acids, their anhydrides and/or esters and low molecular weight polyfunctional epoxides as cross-linking agents, and melting and curing carried out under the influence of NIR radiation in the near infrared region of the spectrum 800-1200 nm within 1-200 with

FIELD: building industry and materials.

SUBSTANCE: invention relates to preparing epoxy-woody composition. The composition comprises the following content of components, mas. p. p.: epoxy-diane resin ED-20, 100; polyethylenepolyamine as an amine hardening agent, 10; plasticizing agent, 15; rubber crumbs as waste in rubber-technical manufacture, 125, and pone saw-dust as filling agents, 62.5. As a plasticizer agent the invention uses mother epoxy resin representing waste in manufacture of epoxy resins. Invention provides enhancing water-resisting properties and to obtain the composition preventing evolving free phenol from splint-slab plate and possessing high exploitation properties. Invention is used as a water-resistant cover for woody plates and splint-slab plates and for reconstruction of defected member sites of woody constructions.

EFFECT: improved and valuable technical properties of composition.

4 tbl, 2 dwg

FIELD: polymers, in particular water-resistant epoxy composition for production of coats, filling floors, compounds.

SUBSTANCE: claimed composition contains (mass pts): law molecular epoxydianic oligomer with molecular mass of 400-700 and epoxy number of 11-21 - 100; fluorine-containing epoxy oligomer based on 2,2-bis-(p-oxyphenyl)-hexafluoropropane diepohypropyl ester with molecular mass of 650 and epoxy number of 15 - 5-10; triethylenetetramine as amine curing agent - 13.6. Law molecular epoxydianic oligomer is used in form of 50 mass % solution in mixture of ethylcellosolve with xylene taken in ratio of 1:7. Fluorine-containing epoxy oligomer is used in form of 50 mass % solution in mixture of ethylcellosolve with xylene taken in ratio of 1:7.

EFFECT: coating with increased water resistance.

1 tbl, 7 ex

FIELD: corrosion protection.

SUBSTANCE: invention relates to preparation of composition to protect against corrosion basic structural materials used utilized in oil and gas storage tanks, pipelines, and bridge constructions. Composition contains, wt %: polymeric film-forming substance 46-58, naturally occurring fine-scale α-ferrous oxide variety 12-30, organosilicon hardener 12-17, thiocol 7-10, and synthetic silica (Aerosil A-175). Polymeric film-forming substance is solution of epoxide resin E-41 in xylene and acetone. Naturally occurring fine-scale α-ferrous oxide variety is specularite originated from Altai deposit "Rudny Log" with contents of silica, alumina, magnesium oxide, and calcium oxide no higher than 2,5, 1.8, 0.2, and 0.3, respectively, and 85-95% α-ferrous oxide (Fe2O3). Fractional composition of specularite: fraction above 70 μm up to 2%, below 40 μm up to 3% and 40-70 μm - the balance. Organosilicon hardener is an organosilicon amine derivative.

EFFECT: increased viscosity of composition and reduced number of coating layers at the same principal performance characteristics and prolonged lifetime.

2 tbl, 6 ex

FIELD: composition for corrosion protection of basic constructional materials (steel, concrete).

SUBSTANCE: claimed composition contains (mass %): polymeric film-forming substance 40-52; natural fine-grain iron alpha-oxide 11-27; organosilicon curing agent 1`2-17; thiocol 7-10; synthetic silica 3-5; strontium chromate 7-9. Solution of epoxy resin in xylene and acetone is used as polymeric film-forming substance. Natural fine-grain iron alpha-oxide contains (mass %): silica, aluminum oxide, magnesium oxide, and calcium oxide not more than 2.5; 1.8, 0.2, and 0.3, respectively and Fe2O3 85-95 %. As organosilicon curing agent organosilicon amine derivatives are used.

EFFECT: coating of increased fuel resistant and durability in high aggressive medium, containing, in particular, fuel with water impurity.

2 tbl, 6 ex

FIELD: special compositions.

SUBSTANCE: invention relates to a method for preparing an aqueous bicomponent joining composition as a cover or adhesive for different backings, such as aluminum, steel, galvanic steel, copper, zinc, magnesium and their alloys, and can be used in automobile industry for external finishing large means of transportations. The composition comprises an aqueous dispersion of at least partially neutralized polymer representing a derivative of amino-functional epoxide and organic compound comprising at least two acetoacetate groups or acetoacetamide groups or combination of two groups. Invention provides preparing covers showing high polish, good waterproofing and resistance to solvents, high hardness and adhesives of high adhesive strength.

EFFECT: improved and valuable properties of composition.

27 cl, 51 ex

Epoxide composition // 2280053

FIELD: coating compositions.

SUBSTANCE: invention relates to a method for preparing composition used for paint and varnish coatings. The composition comprises the components taken in the following ratio, mas. p. p.: epoxy diane oligomer, 50; amine hardening agent, 5.9-11; xylene, 25; butyl acetate, 10; acetone, 15; polyfluorinated alcohol-telomer of the formula: H(CF2CF2)nCH2OH wherein n = 3, 10-15. Low-molecular epoxy diane oligomer of molecular mass 400 Da, not above, and with epoxide number 21-22% is used as epoxy diane oligomer. Invention provides enhancing adhesion, hardness, impact resistance and diminishing water absorption of coatings. Proposed composition can be used in making pouring floors, pouring compounds and for other aims.

EFFECT: improved and valuable properties of composition.

2 tbl, 14 ex

Polymer composition // 2277567

FIELD: polymer materials.

SUBSTANCE: polymer composition for varnishes, adhesives, and coatings is constituted by, weight parts: epoxide dian resin ED-2, 100; maleic anhydride as hardener, 40-80; oil slime as modifier, 10-30; and aniline bottom waste with aniline content 15-18 wt parts, 1-3. Oil slime is composed of hydrocarbon fractions with boiling temperature from 293 to 470°C.

EFFECT: reduced water content and curing time of polymer composition.

1 tbl, 6 ex

FIELD: building materials.

SUBSTANCE: invention relates to a method for preparing an aqueous epoxide corrosion-stable priming used for protection against corrosion and no containing hexavalent chrome compounds. Priming comprises aqueous epoxide compound based on bisphenol A diglycidyl ester, hardening agent and chromate-free pigment inhibiting corrosion. Hardening agent is taken among the group comprising aqueous modified adducts of amines or polyamidoamines decreasing the water content. Chromate-free pigment inhibiting corrosion comprises chromate-free pigment additive inhibiting corrosion that is taken among the group comprising mixtures of cerium molybdate with bismuth vanadate, cerium molybdate with strontium tungstate, cerium phosphate with strontium tungstate, bismuth vanadate with bismuth molybdate and strontium tungstate, and their mixtures also. Pigment-filling agents and hydrophobic hardening agent are added to the priming composite for enhancing waterproofness and corrosion resistance. Invention provides excluding the negative effect of hexavalent chrome on environment objects and human body.

EFFECT: improved and valuable properties of priming.

4 ex

FIELD: polymeric materials.

SUBSTANCE: abrasive-resistant composition material is made of composition comprising the following ratio of components, wt.-%: functional additives, 40-45; thermoplastic modifying agent, 28.14-43.5; hardening agent, 1-2; epoxy resin E-41, E-41r, the balance. Mixture of thermoplastic chlorine-containing modifying agent - perchlorovinyl resin and thermoplastic polymer taken in the ratio = (1:0.5)-(1:0.005) is used as a thermoplastic modifying agent. Thermoplastic polymer is taken among the following group: polystyrene, acryl-butadiene-styrene plastic, polyamide, polyethylene, polypropylene, copolymer of ethylene and vinyl acetate. Invention provides enhancing the adhesion strength and stability to abrasive wearing, among them, in effect of sign-variable and impact loadings and vibrations. Invention can be used in machine engineering for making functional coverings preventing wear of articles, constructions or aggregates as result of effect of abrasive and corrosive media, impact loadings and vibrations.

EFFECT: improved and valuable properties of material.

2 tbl, 13 ex

FIELD: building materials.

SUBSTANCE: invention relates to a method for preparing the coating composition based on modified epoxy resin used in protection of building constructions, for example, as a component for pouring floorings. The composition comprises the following ratio of components, wt.-%: epoxy diane resin, 55.0-63.0; amine hardening agent as a mixture of isophoronediamine, 13.0-20.3, and one of amine taken among methaxilylenediamine, 7.0-9.0, or diethylenetriamine, 5.0-6.0, or triethylenetetraamine, 5.5-6.5 and tris-(dimethylaminomethyl)phenol, 2.0-2.7, as adduct with laprolat-803, 6.5-10.5, and mixture of dioxane alcohols and their high-molecular esters (EDOS). Laprolat-803 represents polyoxypropylenetriol tricyclocarbonate propyl ester. Invention provides hardness and wear-resistance of coating.

EFFECT: improved and valuable properties of composition.

2 tbl, 7 ex

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

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