Two-component adhesive

FIELD: chemistry.

SUBSTANCE: present invention relates to a two-component adhesive for gluing wooden materials, as well as a method of producing said adhesive. Said adhesive contains an isocyanate-containing component A and an amine-containing component B. Component A contains a prepolymer with a terminal isocyanate group with isocyanate functionality ≥ 1.7, preferably 1.7<fNco<3, more preferably in the range of 2-3, and component B contains at least one diamine and/or polyamine, preferably a diamine polyether and/or a polyamine polyether. Stoichiometric ratio of isocyanate groups in component A to amine groups in component B is equal to 0.5-1.2, more preferably 1.

EFFECT: obtaining a two-component adhesive which ensures strength, stability and improved load-bearing capacity of the obtained bond, and also having improved light fastness.

10 cl, 3 ex

 

The present invention relates to two-component adhesive for bonding wood materials.

Previously polyurethane adhesives used for bonding wood materials, including, in particular, bearing glued wooden structures (wooden building structures), such as, for example, structural elements (laminated wooden beams, wall elements and so on). In such applications are used as two-component and one-component curing in a moist environment, adhesives. In the case of the latter system after application of the adhesive passes the initial reaction between isocyanates and moisture from the ambient air or substrate: part used isocyanate with the release of carbon dioxide is formed corresponding amine and then it reacts with the isocyanate with the formation of urea due to release of CO2.

The reaction of aromatic isocyanates with hydroxyl groups (water or alcohols) by several orders of magnitude faster than the corresponding aliphatic isocyanates. However, the aromatic system makes aromatic isocyanates are sensitive to oxidation and essentially less permanent. In some applications, in addition, the urethane reaction is not fast enough, for example, for mass production with high productivity. In any case, there are about the limits of acceleration in the case of one-component systems. First, often the rate-determining is the diffusion of water molecules from the substrate or air. Secondly, high-speed formulations have a tendency to foam, as formed CO2remains captured. For many applications, in particular for exterior surfaces, in addition, require high temperature resistance and moisture resistance.

Therefore, the aim of the present invention is to eliminate the disadvantages of the prior art and thus creating a two-component adhesive for bonding wood materials, which allows to obtain a connection, which acquires the ability to withstand the load, it has the strength and durability at least equal to or better than when using the known polyurethane adhesives described above. In addition, two-component adhesive should be particularly permanent.

This goal is achieved by the features of independent claims.

Two-component adhesive of the invention for bonding wood materials includes isocyanatomethyl component a and listeriosis component C. Component And includes a prepolymer with isocyanate end group or a mixture of prepolymers with isocyanate functionality groups ≥1,7, preferably of 1.7<fNCO<3, more preferably in the range of 2-3. Osobennostyami is in liquid or paste form, but not solid at room temperature (20°C) a prepolymer with isocyanate end group or a mixture of prepolymers. The isocyanate content in the prepolymer is 6-33% of the mass, preferably 8-25 wt. -%, more preferably 12-18% of the mass. Component includes at least one diamine and/or polyamine, preferably polyether diamine and/or polyethers polyamine. Particularly preferred component b, more specifically, the diamine and/or polyamino is liquid or pasty, but not solid at room temperature (20°C). More preferably component essentially does not contain hydroxyl groups.

Accordingly, the invention provides a two-component adhesive, in which cross-linking of the prepolymer component containing isocyanate, called amines, which are provided by the component C. This results in many advantages over the prior art: (1) compared with the above one-component polyurethane systems there is no need to first generate amines by hydrolysis of excess isocyanate - instead amines are served directly, which speeds up the reaction. In this regard, the humidity of the substrate and/or air is not essential to the bonding process. In the result it is also possible to join without problems substrates, such as the stack is about, metals, etc. Favorable for bonding is also a lack of CO2because you don't have to use the back pressure and also there are no bubbles that weaken the connection. (2) In comparison with the above-described two-component polyurethane systems, if necessary resistance to light, it is possible to use only aliphatic amines, which also lead to more rapid cross-linking with the education bridge urea linkages. Therefore, the present invention allows without loss of responsiveness of the system and actually accelerated to substantially eliminate, preferably completely, aromatic amines, particularly polymers containing aminobenzoate. In case of mechanical processing, it is possible to achieve very short production cycle when gluing. In addition, there is no need in the presence of monoamines. Suddenly, ceteris paribus additionally achieved an increase in heat resistance and moisture resistance, possibly due to the higher thermodynamic stability of urea communication compared to the urethane bond.

In a particularly preferred implementation of the prepolymer with terminal isocyanate groups or a mixture of prepolymers in the component And is a polyurethane or polycarbamide the prepolymer, optionally in a mixture with d the additional isocyanates, examples of which are Monomeric diisocyanate, polymeric isocyanates or monofunctional isocyanates. If necessary, it is also possible to completely exclude the presence of prepolymers, and on the contrary, the appropriate reagents (diisocyanate/polyisocyanates, on the one hand, and diols/polyols and/or diamines/polyamine, on the other hand to generate the prepolymer may be present in component A. the Polyurethane prepolymers and/or a mixture of polyurethane prepolymers are preferred in the context of the invention: they provide effective adhesion to wood materials polyurethane compositions of the prior art, which is used in the future.

Suitable polyurethane or polycarbamide the prepolymers and their preparation by themselves well-known specialists in this field of technology. Let us mention, in particular:

Isocyanates

Isocyanates are necessary to obtain polyurethanes and polycarbamide. The General empirical formula polyisocyanates R-(NCO)n, n≥2, R represents an aromatic or aliphatic group. The polyisocyanates which react with hydroxyl groups to form polyurethanes; polyisocyanates which react with amino groups, form polycarbamide.

Used the polyisocyanates are preferably diisocyanates, particularly preferably is selected from the group consisting of 4,4'-methylenbis(phenylisocyanate) (MDI); colordistance (TDI); m-calolziocorte (XDI); hexamethylenediisocyanate (HDI); Methylenebis(4-cyclohexyldiamine) (HDMI); naphthalene-1,5-diisocyanate (NDI); 3,3'-dimethyl-4,4'-biphenyldiol (TODI); 1,4-diisocyanatobutane (PPDI); phenyl-1,4-diisocyanate; trimethylhexamethylenediamine (TMDI); isophorondiisocyanate (IPDI); 1,4-cyclohexyldiamine (CHDI); diphenyl ether 4,4'-diisocyanate; p,p'-diphenyldiisocyanate; lizenzierte (LDI); 1,3-bis(isocyanatomethyl)cyclohexane; polymethylphenylsiloxane (PMDI); and their isomers and/or mixtures.

Especially preferred are mixtures of MDI and MDI. A mixture of polyphenylalanine associated methylene bridges, usually contain about 20-100% of the mass. isomers of MDI (usually 20-95% of the mass. which is 4,4' isomer), the residue formed polymethylenepolyphenylisocyanate with higher functionality (typically about 2.1-3.5), and higher molecular weight. Mixtures of diisocyanates of this kind are commercially available and/or can be easily obtained in accordance with US 3,362,979.

Undoubtedly, the isocyanates can be in the form of higher homologues, such as isocyanurate, carbodiimide, allophanate, biuret, or in the form of, for example, uretdione.

The prepolymers

Polyurethane prepolymers

Polyurethane prepolymers get usaimage is a result of the polyols with the above-mentioned isocyanates. Suitable polyols are well known to specialists in this field of technology. In the context of the invention are typically molecular weight is about 500-6000, and/or they have 2-4 hydroxyl groups. Particularly preferred polyols are polyesters, polyethers, polythioether, Polyacetals and polycarbonates, in each case with 2-4 hydroxyl groups. Preferred polyethers of the invention themselves known to experts in the art and may be obtained, for example, by polymerization of epoxides such as ethylene oxide, propylene oxide, butylenes, tetrahydrofuran, stimulated or epichlorohydrin in the presence of BF3or join pokidov, more of ethylene oxide or propylene oxide to molecules containing active hydrogen, such as water, alcohol or amines (examples are diols with a low molecular weight; trioli or tetraol; 4,4'-dihydroxydiphenylpropane; aniline; ammonia; ethanolamine; Ethylenediamine). Currently preferred are polypropylenglycol and polytetramethylene (PTMG or PTMEG).

Upon receipt of the prepolymers can also be used chain extenders, which are known in themselves, specifically diols/polyols with low molecular weight (typically less than 400 g/mol). In particular, there can be mentioned ethylene glycol, propylene glycol, butane is likely, Pentangeli, hexandiol, benzylphenol, xianglian, water, 1,4-butanediol, 1,3-butanediol, 2,3-dimethyl-2,3-butanediol, dipropyleneglycol and dipropyleneglycol, diethylene glycol and triethylene glycol, N, N'-bis(2-hydroxypropyl)aniline (DHPA), 1,4-di(2-hydroxymethyl)hydroquinone (HQEE), diethanolamine, triethanolamine, trimethylolpropane and glycerin.

Polyesterpolyol, simple polyether polyols complex polyether polyols or a mixture of simple and complex polyether polyols, preferably having 2 or 3 hydroxyl end groups, may interact with a deliberate excess of isocyanate to obtain a NCO-terminal urethane prepolymers. They are also commercially available, for example, in BAYER AG under the trademark Desmodur® E22 or e. Also known and can be used distillates, in which the removal of excess isocyanate leads to fNCO=2.

Carbamide prepolymers

Carbamide prepolymers receive the usual way interaction of polyamines with two or more amino groups with a deliberate excess difunctional or polyfunctional isocyanate compounds to obtain urea prepolymers with NCO-terminal groups.

However, in the context of the invention the urea prepolymers less preferred than polyurethane prepolymers, as they are prone to gelation at room temperatures by forming hydrogen bonds.

Amines

Simple politicalarena

As a component of polymer polyamine possible it is preferable to use compounds with a functionality of 2-4, with more than 50% of the active hydrogen atoms, more precisely, educated primary or secondary amines. In particular, there may be mentioned the following: polyoxyalkylene, such as, for example, Polyoxypropylenediamine, polyoxyethylene, polytetramethylene ethers, diamines, Polyoxypropylenediamine, polyoxyethylenated (known under the trademark Jeffamine® company Hustman); and in that case, if acceptable aromatic components for special applications, use the following: polietilenglikoli(p-aminobenzoate); polietilenglikoli(o-aminobenzoate); polietilenglikoli(m-aminobenzoate); polytetramethylene(p-aminobenzoate); literalistically(o-aminobenzoate); polytetramethylene(m-aminobenzoate). As polyamines can be used polyether polyethylene oxide-polypropyleneoxide, in particular, with the functionality of 2-3 and/or molecular weight of approximately 200-6000 g/mol (described, for example, in US 4,433,067). In the context of the invention, it is certainly possible to use a mixture of polyethers with terminal amino groups.

It is preferable to use polyoxyalkylene with an average molecular is esom in the range of about 150-7500 g/mol, preferably in the range of about 250-6000 g/mol.

Amines as chain extension

In the context of the invention it is also possible to use amine chain extenders, preferably with a molecular weight of usually less than 400 g/mol. In particular, there can be mentioned aliphatic diamines, as described, for example, in US 4,246,363 and US 4,269,945. Additionally aliphatic diamines as chain extenders may be selected from the group consisting of Ethylenediamine; neopentylene; 1,2 - and 1,3-propandiamine; 1,6-diamine; 1,8-octamethylene; 1,12-documentrenderer; cyclohexyldiamine; 4,4'-bis(para-aminocyclohexane)methane; 2,2'-dimethyl-4,4'-methylenbis(cyclohexylamin)(dimethylmethylene); ISOPHORONEDIAMINE; 4,7-dioctadecyl-1,10-diamine; 4,7,10-trioxadecyl-1,13-diamine; tetramethylethylenediamine; pentamethyldiethylenetriamine; dimethylcyclohexylamine; tetramethyl-1,3-butanediamine; pentamethyldiethylenetriamine; bis(dimethylaminoethyl) ether triethylenemelamine; 4,4'-Methylenebis(2-ethyl-6-methylcyclohexylamine) (M-MEGA); 4,4'-Methylenebis(2,6-Diethylenetriamine) (MDEGA); 4,4'-bis(terbutaline)dicyclohexylmethane (commercially available as Clearlink® 1000) and their monomers; 3,3'-dimethyl-4,4'-bis(terbutaline/dicyclohexylmethane (commercially available as Clearlink® 3000) and their monomers, N,N'-diisopropylcarbodiimide (commercially available as Jefflink® 754; amines aspartic acid, such as, for example, N,N'-diethylmaleate-2-methylpentylamine (commercially available as Desmophen® NH 1220); N,N'-diethylaminoethylmethacrylate (commercially available as Desmophen® NH 1420) and N,N'-diethylaminoethylmethacrylate (commercially available as Desmophen® NH-1520. In the context of the invention can also be used as chain extenders aromatic diamines (as described, for example, in US 4,659747), optionally, in the above light resistance for some applications. In particular, there may be mentioned: dimethylbenzylamine; diethylbenzene; 1,2-dimethylimidazole; 2-Mei; 1,2-, 1,3 - or 1,4-bis(terbutaline)benzene (commercially available as Unilink® 4100); 4,4'-bis(terbutaline)difenilmetana (commercially available as Unilink® 4200); triethyleneglycol(p-aminobenzoate) (commercially available as Versalink® 740M); triethyleneglycol(o-aminobenzoate); triethyleneglycol(m-aminobenzoate); polietilenglikoli(p-aminobenzoate); polietilenglikoli(o-aminobenzoate); polietilenglikoli(m-aminobenzoate); polytetramethylene(p-aminobenzoate); polytetramethylene(o-aminobenzoate); polytetramethylene(m-aminobenzoate); aromatic diamines, such as, for example, 3,5-diethyl-2,4-toluidine and 3,5-diethyl-2,b-toluidine (commercially available as Ethacure® 100) and 3,5-dimethyldi-2,4-is alaaldeen and 3.5-dimethyldi-2,6-toluidine (commercially available as Ethacure® 300); 4,4'-Methylenebis(2-Chloroaniline); Diethylenetriamine; Triethylenetetramine; Tetraethylenepentamine; methylenedianiline (MDA); m-phenylenediamine; diethyltoluenediamine; 4,4'-Methylenebis(3-chloro-2,6-diethylaniline) (MCDEA); diethyltoluenediamine (DETDA); 4,4'-Methylenebis(2-ethyl-6-methylaniline) (NMMEA) 4,4'-Methylenebis(2,6-diethylaniline) (MDEA); 4,4'-Methylenebis(2-isopropyl-6-methylaniline) (MMIPA); 4,4'-methylenbis(terbutaline)diphenylmethane; phenylendiamine; methylenbis-ortho-Chloroaniline (MWOSA); 4,4'-Methylenebis(2-methylaniline) (MMA); 4,4'-Methylenebis(2-chloro-6-ethylaniline) (MSEA); 1,2-bis(2-aminophenylthio)ethane; N,N'-dialkyl-p-finlandiae; 4,4'-Methylenebis(2,6-diisopropylaniline) (MDIPA); and diethyltoluenediamine (2,4 and 2,6 isomers) (DMTDA); isobutyl ether 4-chloro-3,5-diaminobenzoic acid (CDABE) and mixtures thereof.

The ratio in the mixture of the above extension chain polyamines can be easily selected by a person skilled in the technical field the usual experimentation until the desired ratio of hard segments and soft segments. In this case, the calculation can be made based on normal conditions Miscibility of the components.

The above primary polyamine can be further modified in the usual way known from the prior art, such as epoxides (US 6,723,821), acrylates (accession Michael, as described, for example, in US 5,359,123 and US 5,192,814) or also alkoxysilane (suppose the equipment by aminosilane, as described, for example, in WO 02059224) and also isocyanatobenzene, epoxysilane or galatosidase.

The inclusion alkoxysilyl compounds in the isocyanate component and/or amine component can get those 2K polycarbamide adhesives with improved properties of adhesion, water resistance and kislotostojkuju.

Especially preferred amines in the component are In Polyoxypropylenediamine, preferably with an average molecular weight of about 2000 g/mol (commercially available under the trademark Jeffamine® D-2000 CAS 9046-10-0; Huntsman Corporation, Houston, Texas); primary branched polyethers of triamino preferably with an average molecular weight of about 5000 g/mol (commercially available under the trademark Jeffamine® T-2000 CAS 64852-22-8; Huntsman Corporation, Houston, Texas (USA)); substituted, namely aromatic diamines, such as, for example, diethyltoluenediamine (commercially available under trademark Härter DT or Härter VP LS 2214; Bayer AG, Leverkusen (DE)) or N,N'-dialkylaminoalkyl (commercially available under the trademark Unilink™ 4200 Diamine; UOP GmbH, Erkrath (DE)).

The functionality of the prepolymers with NCO-terminal groups, specifically urethane prepolymers, ≥1,7, preferably of 1.7<fNCO<3, more preferably in the range of 2-3. Functionality >2 is explained not only by additionally present a free isocyanate, but also allophanate the diversified groups, formed by the reaction of urethane groups with NCO links; therefore, the prepolymers of this kind are frequently referred to in the art as "quasi-prepolymers". In the course of further reaction component In allophanate group in the component And back split on urethane and free isocyanate.

In the preferred implementation of the stoichiometric ratio of isocyanate groups in component a to the amino groups in the component In amounts of about 0.5 to 2, preferably about 0.9 to 1.2, more preferably about 1.

The selection and, where possible, a combination of various diamines and polyamines specialist in the art can easily conventional experimentation to adjust the basic properties, such as elasticity, resistance, reaction speed and so on, two-component adhesive exclusively due to the component; component But can remain unchanged, which provides considerable flexibility, both from the point of view of production for the producer and for the consumer (systems with different components; see below).

Undoubtedly, the compositions of the invention may include additional additives conventional in the prior art, conventional in the industry polyurethane/polycarbamide. For example: plasticizers, examples are esters of organic carboxylic acids or their anger the Dov, phthalates, such as dioctylphthalate or diisodecylphthalate, for example, adipinate, such as dioctyladipate, such as Sabatini, organic esters of phosphoric and sulfonic acids, polybutene and other compounds that do not react with isocyanates; solvents; organic and inorganic fillers, such as ground or precipitated calcium carbonates, which optionally coated with stearates, or gas carbon black, kaolin, aluminum oxide, silicon dioxide and PVC powders; fibers made of polyethylene or polyamide, pigments; rheology modifiers such as, for example, thickeners, examples are compounds urea, polyamide waxes, bentonites or pyrogenic silicon dioxide; adhesion promoters, in particular silanes, such as vinylsilane, isocyanatobenzene in the isocyanate component and aminosilane, reacted with aldehydes to form adimensional amine component; siccatives such as, for example, p-totalitarian and other reactive monoisocyanates, VINYLTRIMETHOXYSILANE, orthoformiate, calcium oxide or molecular sieves (e.g., zeolites); heat stabilizers, light and UV stabilizers; flame retardants; surface-active substances such as, for example, wetting agents, regulators fluidity, reagents to suppress volatility or panahasi the ate; fungicides or growth inhibition of fungi; and also other substances commonly used in the polyurethane industry.

Regarding the availability and selection of such additives may be given the link to the Polyurethane Handbook 2nd edition, Glinter Oertel (Editor), Hanser Publishers, Munich 1994, p.98-128, the disclosure of which is relatively additives conventional in the prior art, is included in the description by reference, as part of the disclosure of beings of the present invention.

With the above mentioned two-component adhesives can easily achieve a variety of standard regulations for wooden structures, for example, in the processing of beech;

- the strength of the connection Cl according to DIN EN 12765 (just-fit joint) ≥ 10 N/mm2preferably ≥ 12 N/mm2; and/or

- the strength of the connection Cl according to DIN EN 12765 (0.5 mm joint) ≥ 7,5 N/mm2preferably ≥ 9 N/mm2; and/or

- resistance C3 (sequence preparation 3), according to DIN EN 12765 (just-fit joint) ≥ 4 N/mm2preferably ≥ 5 N/mm2; and/or

- resistance C3, according to DIN EN 12765 (0.5 mm connection) ≥ 3 N/mm2preferably ≥ 4 N/mm2; and/or

- resistance according to DIN EN 14257 (just-fit joint) ≥ 7 N/mm2preferably ≥ 9 N/mm2.

Further, the invention relates to a method of gluing wood based materials, for example in the construction of wooden structures, including Nan is giving the above-described two-component adhesive, at least one of the joined substrates. Suitable additional substrates include primarily the following: metals, glass, ceramics, plastics, textiles. With particular advantage it is possible to use compositions of the invention for glass, because when aromatics are essentially not used or predominantly completely absent, it is possible to achieve exceptional lightfastness, with additional acceleration of the reaction in comparison with the known polyurethane systems.

A further aspect of the present invention relates to a method of manufacturing a two-component adhesive comprising isocyanatomethyl component a and listeriosis component In,

component And comprising a prepolymer with terminal isocyanate group functionality isocyanate ≥ 1,7, preferably of 1.7<fNCO<3, more preferably in the range of 2-3; and

- component comprising at least one diamine and/or polyamine, preferably a simple polyester diamine and/or easy polyester polyamine,

where the stoichiometric ratio of isocyanate groups in component a to the amino groups in the component In amounts of about 0.5 to 2, preferably about 0.9 to 1.2, more preferably about 1.

Accordingly, the invention relates to a further aspect of the application isocyanatobenzene the components is the same and listeriosis component, where

component And includes a prepolymer with terminal isocyanate group with at least two isocyanate groups, in particular the polyurethane prepolymer; and

- component includes at least one diamine and/or polyamine, preferably a simple polyester diamine and/or easy polyester polyamine, as a two-component adhesive, specifically for bonding wood materials. To date the prior art has not been proposed such use of these two components; an unexpected beneficial properties when applied as a two-component adhesive, specifically for the connection of the wood materials were described above.

Further, the invention relates to a method of Assembly of the components, specifically building elements for the construction of wooden structures, and the Assembly is essentially carried out through a two-component adhesive, as described above.

In addition, in a further aspect the invention relates to a kit for two-component adhesive for bonding wood materials, including

at least one component And comprising a prepolymer with terminal isocyanate group (or a mixture of prepolymers) functionality isocyanate ≥ 1,7, preferably of 1.7<fNCO<3, more preferably in the range of 2-3; and

- at least two and alternativnyj component, each comprising at least one diamine and/or polyamine, preferably a simple polyester diamine and/or easy polyester polyamine.

Through such a set in the form of a kit of parts composition of two-component adhesive of the invention can be prepared by individual solely due to a component In a user-selectable depending on the particular application.

Hereinafter the invention is explained in more detail with reference to examples without limiting or essence of the invention.

As the component used Desmodur © e from Bayer AG (Leverkusen, DE).

In the compositions, are described in more detail later, we used the following mixtures as components In (viscosity, Brookfield, 20°C: about 250 MPa*s):

Code legend:M3MM
Jeffamine D-2000each holding 21.25each holding 21.25each holding 21.25
Jeffamine T-50003,753,753,75
Unilink 4200756570
Hardener DT105
Only100,0100,0100,00

(All values in g)

Get the following two-component adhesives:

Example 1: Desmodur® e + M3

Mixing ratio:

(Vol.) 100: 74,2,

(Weight.) 100: 65,7

The viability of 20 g of the mixture in the laboratory: 2 min

Viability with mechanical stirring: 1 min 15 sec

Example 2:

Desmodur® e + M

Mixing ratio: (Vol.). 100:71,0,

(Weight.) 100:62,8

The viability of 20 g of the mixture in the laboratory: 1 min 05 sec

Viability with mechanical agitation: 30-35 sec

Example 3:

Desmodur® e + M

Mixing ratio: (Vol.). 100:67,9,

(Weight.) 100:60,1

The viability of 20 g of the mixture in the laboratory: 1 min

Viability with mechanical agitation: 20-25 sec

The following compounds (beech) are carried out using the above two-component adhesives and then analyzed:

Two-component adhesives of the invention exhibit excellent adhesive properties not only on the tree. On glass and aluminum also received high strength, as shown by the following examples:

Code legend:M16M16bM6M7
Jeffamine D-2000each holding 21.2511,58each holding 21.2512,50
Jeffamine T-50003,7512,50
Unilink 420037,5020,4437,5075,00
Härter DT37,5020,4437,50
Jeffamine T-4033,752,04
Aerosil R 2020,50
Siliporite SA5,00
1720 Millicarb40,00
Where (if not previously specified):
Desmodur® E 305: mostly linear NCO of the prepolymer on the basis of hexamethylenediisocyanate and another diol, Bayer;
Jeffamine® T-403: Polyoxypropylenediamine(CAS 39423-51-3), Huntsman;
Aerosil® R 202: synthetic hydrophobic silicon dioxide, Degussa;
Siliporite® SA1720: molecular sieves (silicate of alkali and alkaline earth metal zeolite And type), SES, Arkema Group;
Millicarb®-OG: natural, very thin, easily dispersible powder caso3made from pure white limestone Omya AG

Component aDesmodur EDesmodur EDesmodur EDesmodur e
ComponentM 16M 16bM 6M 7
The weight ratio in the mixture100:39,2100:71,8100:40,5100:66,1
The volume ratio in the mixture100:42,7100:78,3100:44,1 100:74,7
Viableabout 2 min 30about 2 min 25about 2 minabout 2 min 30
The shear strength Al 21 days12,8; AF18,2; 30% CF11,8; AF7,9; AF
The shear strength glass 21 days>6; MF5,1; AF>6; MF>6; MF
The shear strength of the tree 21 days13,2; 75% W103; 100% W12.7mm; 70% W12,6; 60% W
Data on strength in MPa
W: the destruction of a tree

Testing equipment: testing machine Instron 5567; the speed of sliding of the clamps 50 mm/min

These tests show that the view that cannot be obtained sufficiently strong adhesive bonding using adhesives that react extremely quickly, not true. It was unexpectedly found that appropriate standards can be achieved and in some cases significantly exceeded using wocomponent adhesives of the invention.

1. Two-component adhesive for bonding wood materials, including isocyanatomethyl component a and listeriosis component, in which
component And includes a prepolymer with terminal isocyanate group functionality isocyanate ≥1,7, preferably of 1.7<fNCO<3, more preferably 2<fNCO<3; and
- component includes at least one diamine and/or polyamine, preferably a simple polyester diamine and/or easy polyester polyamine, and the stoichiometric ratio of isocyanate groups in component a to the amino groups in the component is 0.5 to 1.2, more preferably 1.

2. Two-component adhesive according to claim 1, characterized in that the prepolymer with terminal isocyanate group in the component And is a polyurethane prepolymer.

3. Two-component adhesive according to claim 1 or 2, additionally comprising one or more additives selected from the group consisting of plasticizers, solvents, organic and inorganic fillers, fibers, pigments, rheology modifiers; siccatives; thermal stabilizers, light and UV stabilizers; flame retardants, wetting agents, regulators fluidity; reagents that prevent volatilization; defoamers; fungicides or growth inhibition of fungi; and mixtures thereof.

4. Two-component adhesive according to claim 1 or 2, ha is acteresses fact, when the connection tree, in particular beech received
the strength of the connection Cl according to DIN EN 12765 (just-fit joint) ≥ 10 N/mm2preferably ≥ 12 N/mm2; and/or
the strength of the connection Cl according to DIN EN 12765 (0.5 mm joint) ≥ 7,5 N/mm2preferably ≥ 9 N/mm2; and/or
- resistance C3 (sequence preparation 3), according to DIN EN 12765 (just-fit joint) ≥ 4 N/mm2preferably ≥ 5 N/mm2; and/or
- resistance C3 according to DIN EN 12765 (0.5 mm connection) ≥ 3 N/mm2preferably ≥ 4 N/mm2; and/or
- resistance according to DIN EN 14257 (just-fit joint) ≥ 7 N/mm2preferably ≥ 9 N/mm2.

5. Two-component adhesive according to claim 3, characterized in that in the connection tree, in particular beech received
the strength of the connection Cl according to DIN EN 12765 (just-fit joint) ≥ 10 N/mm2preferably ≥ 12 N/mm2; and/or
the strength of the connection Cl according to DIN EN 12765 (0.5 mm joint) ≥ 7,5 N/mm2preferably ≥ 9 N/mm2; and/or
- resistance C3 (sequence preparation 3), according to DIN EN 12765 (just-fit joint) ≥ 4 N/mm2preferably ≥ 5 N/mm2; and/or
- resistance C3 according to DIN EN 12765 (0.5 mm connection) ≥ 3 N/mm2preferably ≥ 4 N/mm2; and/or
- resistance according to DIN EN 14257 (just-fit joint) ≥ 7 N/mm2preferably ≥ 9 N/mm2.

6 Method of gluing wood based materials in particular the construction of wooden structures, including the application of two-component adhesive according to any one of claims 1 to 5, at least one of the joined substrate.

7. The method of preparation of two-component adhesive comprising isocyanatomethyl component a and listeriosis component, in which
component And includes a prepolymer with terminal isocyanate group functionality isocyanate ≥ 1,7, preferably of 1.7<fNCO<3, more preferably 2<fNCO<3; and
- component includes at least one diamine and/or polyamine, preferably a simple polyester diamine and/or easy polyester polyamine, characterized in that the stoichiometric ratio of isocyanate groups in component a to the amino groups in the component In amounts of about 0.5 to 2, more preferably about 1.

8. Application isocyanatobenzene component and listeriosis component In which
component And includes a prepolymer with terminal isocyanate group having at least two isocyanate groups; and
- component includes at least one diamine and/or polyamine, preferably a simple polyester diamine and/or easy polyester polyamine, and the stoichiometric ratio of isocyanate groups in component a to the amino groups in the component In amounts of about 0.5 to 2, more predpochtitel is about 1, as a two-component adhesive for bonding wood materials, metals, glass, ceramics, plastics, textiles, preferably of wood materials.

9. The connection parts, in particular structural elements, construction of wooden structures, obtained essentially by means of two-component adhesive according to any one of claims 1 to 5.

10. Set for individual preparation of two-component adhesive, especially for bonding wood materials, comprising at least one component And comprising a prepolymer with terminal isocyanate group functionality isocyanate ≥ 1,7 preferably of 1.7<fNCO<3, more preferably 2<fNCO<3; and
at least two alternative component, each including at least one different diamine and/or polyamine, preferably a simple polyester diamine and/or easy polyester polyamine, and the stoichiometric ratio of isocyanate groups in component a to the amino groups in the component In amounts of about 0.5 to 2, more preferably about 1.



 

Same patents:

FIELD: chemistry.

SUBSTANCE: present invention relates to a polyisocyanurate based adhesive which is obtained by reacting an organic polyisocyanate with a compound containing hydrogen atoms which are reactive towards isocyanate, in the presence of a trimerisation catalyst. The organic polyisocyanate is a polymer or prepolymer polyisocyanate, and content of the soft block in the adhesive ranges from 40 to 60 wt %. A reaction mixture for producing said adhesive is also described.

EFFECT: obtaining an adhesive capable of withstanding high maximum stress, having extremely fast setting and having a good and strong bond with the base, as well as high thermal stability, resistance to salty water and creep.

9 cl, 4 ex, 6 tbl

Gluing method // 2451040

FIELD: chemistry.

SUBSTANCE: method involves applying a UV curable adhesive resin composition, containing a photolatent base, onto at least one transparent surface of at least one of a first and a second substrate. The substrates are then brought together so that said adhesive composition lies in between. The adhesive composition is then exposed to actinic radiation for curing. The UV curable adhesive is a OH/NCO system or SH/NCO system. In another version of the gluing method, the first and second substrates are brought together after exposing the adhesive composition in between to actinic radiation.

EFFECT: disclosed gluing method enables faster curing of the adhesive.

5 cl, 10 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: disclosed is a polyurethane adhesive for laminating films. The polyurethane adhesive for laminating films contains at least one NCO-reactive polyurethane prepolymer and/or polyisocyanates and is cross-linked only through NCO-/acidic H groups. The adhesive is characterised by that it contains between 0.5 and 20 wt % low-molecular weight compound (A) having molecular weight lower than 2000 g/mol, which contains at least one group which is reactive with respect to primary amine groups, selected from an epoxy group, oligomeric polyethers of unsaturated carboxylic acids or vinylphosphonic acid, wherein compound (A) reacts with primary amine groups at a rate slower than the rate of the cross-linking reaction. Disclosed also is use of said adhesives in a method of producing laminated multilayer films which are glued using the disclosed polyurethane adhesives.

EFFECT: films glued using said adhesive contain a negligible amount of aromatic amines capable of migrating.

13 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: composition contains one or more urethane prepolymers, having isocyanate residues, one or more compounds which catalyse the reaction of isocyanate residues with water or a compound which contains active hydrogen and one or more alpha-hydrocarbyl silane compounds. The urethane propolymer additionally contains a silane functional group. The composition additionally contains a compound or a polymer, containing silane residues. The composition additionally contains one or more compounds which catalyse silanol condensation. The composition is deposited onto the surface of glass or plastic with a coating or onto the surface of a substrate to obtain a sealant, then brought into contact and the composition is then hardened. The composition is placed between the glass or plastic with coating and the substrate. The sealing composition is used for binding an unprimed surface with a coating, such as a window lintel with glass with a transparent plastic, coated with an abrasive-resistant coating or with glass or plastic with a coating, additionally coated with glass cement, such as ceramic or organic glass cement.

EFFECT: improved composition properties.

10 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing dispersions of blocked polyurethane prepolymers, use of dispersions obtained using said method to produce coating agents, adhesive substances and sealants and elastomers, said application products themselves, as well as substrates provided with coating agents. The method involves the following: I) a blocked polyurethane prepolymer is obtained first by reacting a) 100 equivalent % of at least one polyisocyanate with b) 50-90 equivalent %, in terms of isocyanate reactive groups, of a thermally split blocking agent, c) 5-45 equivalent %, in terms of isocyanate reactive groups, monohydroxycarboxylic acid as a hydrophilic agent and d) 0-25 equivalent %, in terms of isocyanate reactive groups, of polyhydroxycarboxylic acid as a hydrophilic agent and e) 0-15 equivalent %, in terms of isocyanate reactive groups, of at least one, in terms of isocyanate reactive groups, di- or polyfunctional component of a chain extender with molecular weight from 32 to 350 g/mol, where i) this takes place using (partially) water-miscible organic solvents which are inert to NCO-groups and have boiling point lower than 120°C (at 1013 mbar), ii) and they are used in such an amount that the polyurethane prepolymer contained in the reaction solution after complete conversion ranges from 70 to 98 wt %. Further, II) the polyurethane prepolymer solution obtained at step (I) is dispersed in water, where before, during or after dispersion, deprotonation of carboxylic acid groups with a base takes place at least partially, and then III) if needed, the contained organic solvent is completely removed during dispersion via distillation.

EFFECT: obtaining polyurethane dispersions which are stable during storage, endow said products of their application with good optical properties, high resistance to chemical reagents and pendulum hardness.

13 cl, 10 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: elastic quick-setting polyurethane adhesives with high adhesion to nonferrous metals, wires, including PVC sheathing, glass textolite, polycore, lavsan-type film materials, polyamide, with shearing strength of 5.0…7.0 MPa. The composition is especially recommended for attaching sensors, different elements when assembling radioelectronic equipment and electro-radio articles.

EFFECT: low viscosity of the adhesive which ensures quality connection of miniature elements; and minimum gas release from the hardened adhesive under vacuum-thermal effects according to GOST R 50109-92; a valuable property of the disclosed adhesive is its repairability, ie the possibility of breaking the adhesive joint in case of defective articles.

4 cl, 1 tbl

Adhesive // 2436817

FIELD: chemistry.

SUBSTANCE: adhesive contains a hydroxyl-containing component, polyisocyanate and filler. The hydroxyl-containing component used is a linear aromatic polyester P-601 with 6.7-8.0% (100 pts.wt) hydroxyl groups. The polyisocyanate is prepolymer PP-2191 with weight ratio of NCO groups equal to 20.5% (70-90 pts.wt) and the filler is asbestos which has been processed for class A adhesives (10 pts.wt).

EFFECT: wider range of operating temperatures of the adhesive and faster hardening of the adhesive.

2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: adhesive composition contains perchlorovinyl resin and an organic solvent. The composition contains dichloroethane as an organic solvent, as well as dibutyl phthalate and a modifier in form of epoxy diane resin ED-20 and N-nitrosodiphenylamine, with the following ratio of components in pts.wt: perchlorovinyl resin 20, organic solvent 80.0, dibutyl phthalate 1.0, epoxy diane resin ED-20 10.0-15.0, N-nitrosodiphenylamine 0.33-1.11.

EFFECT: invention increases strength when gluing together vulcanised rubber.

2 tbl

FIELD: chemistry.

SUBSTANCE: adhesive composition contains polychloroprene rubber nairit DP, butyl phenol formaldehyde resin 101 K, water, zinc oxide, magnesium oxide and an organic solvent which is a mixture of ethyl acetate and nefras. The composition additionally contains a modifier obtained first as a result of room temperature-reaction of an aliphatic amine - triethanolamine or polyethylene polyamine and silica filler Rosil R-175, with the following ratio of components, wt %: polychloroprene rubber nairit DP - 90.0, butyl phenol formaldehyde resin 101K - 90.0, water - 3.0, zinc oxide - 5.0, magnesium oxide - 11.0, organic solvent - 800.0, aliphatic amine - 0.1-0.2, silica filler Rosil R-175 - 10.0.

EFFECT: invention increases strength when gluing together vulcanised rubber.

2 tbl

FIELD: chemistry.

SUBSTANCE: adhesive composition is meant for gluing leather, rubber, polyurethane, PVC coatings, rigid plastic, metal, chip board, as well as for repairing furniture, plywood, scale wood, organic glass, paper, cardboard, cloth and fibre materials. The adhesive composition contains a mixture of Desmokoll ester urethane rubber, stabilising additives, a target additive and a solvent. The mixture of ester urethane rubber consists of three types of ester urethane rubber distinguished by viscosity. One of the rubber types has viscosity of 1500-2100 cP, the second has viscosity of 500-1000 cP and the third has viscosity of 400-800 cP. The stabilising additives in the composition are malonic acid and tinuvin, and the target additive is aerosil. The solvent is a composition containing acetone, ethyl acetate and toluene. The adhesive composition has frost-, vibration- and heat-resistance, as well as low toxicity.

EFFECT: adhesive composition forms a strong, highly elastic and strong adhesive joint.

1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a metal substrate coated, at least partially, with a coating in form of a multilayer composite comprising at least one layer selected from an electrodeposited coating layer, a base coating layer and a transparent coating layer; and a coating containing polyurea obtained from a reaction mixture containing isocyanate and a product of reaction between a monoamine and poly(meth)acrylate, which is (meth)acrylated amine, in which the ratio of isocyanate group equivalents to amine group equivalents is greater than 1.3:1, and isocyanate and the reaction product, which is (meth)acrylated amine, can be deposited on the substrate in volume ratio of concentration of components of 1:1. The invention also describes a building having a structural element coated, at least partially, with a coating from said polyurea, as well as a substrate coated, at least partially, with a coating from said polyurea, where the ratio of isocyanate equivalents to amine group equivalents is greater than 1.3:1.

EFFECT: coating can attenuate an explosion, eg, protection in case of an explosion or breakage in the immediate vicinity of flying debri formed by an explosion wave.

21 cl, 3 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to a coating composition containing polyurea obtained from a reaction mixture containing: a) a first component containing isocyanate; and b) a second component containing an amine/(meth)acrylate oligomeric product of a reaction between polyamine, poly(meth)acrylate and mono(meth)acrylate or monoamine. Described also is a method of applying the coating onto a substrate, involving application of said coating composition onto at least part of a substrate, and a substrate which is at least partially coated with a coating made from said composition.

EFFECT: coating using a coating made from the disclosed coating composition, which essentially does not give after-tack from the substrate, endows the substrate with corrosion resistance, wear resistance, impact resistance, fire- and/or heat resistance, chemical resistance, structural integrity, decoration etc.

26 cl, 7 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: present invention relates to modified diene polymers. The invention describes modified polymers based on conjugated dienes of formula (I): [BR]n-PUR, in which BR denotes a diene polymer, PUR denotes a polyurethyane base, and n is a number greater than or equal to 2. Described also is a method of producing said modified polymers, where compounds containing conjugated dienes are polymerised first, the formed polymers react with polyfunctional isocyanate and/or thioisocyanate compounds, characterised by that the polymer solution obtained from reaction of these polymers with polyfunctional isocyanate and/or thioisocyanate compounds reacts with polyfunctional compounds containing an acidic hydrogen atom. Described also is use of said modified polymers to make tyres and tyre components, for making high-impact polystyrene, copolymers based on acrylonitrile, butadiene and styrene and for making golf balls.

EFFECT: obtaining modified diene polymers which are suitable for introduction into rubber mixtures and which improve mechanical and dynamic properties of moulded articles.

10 cl, 4 tbl, 26 ex

FIELD: chemistry.

SUBSTANCE: the method relates to cast elastomers used as oscillation dampening elements to dampen the oscillations of any kinds of machinery, more specifically in construction of train-ferries, ship building and engineering, etc. The said cast elastomers are produced from the (A) NCO-prepolymer of the high-melting polyisocyanate taken from the group consisting of 1,5-naphthalene diisocyanate (NDI), para-phenylene diisocyanate (PPDI) and 3,3'-dimethyl-4,4'-bi-phenyl diisocyanate (TODI); and (b) a mixture of polyols of (b1) 50-85 mol-% in regard to (b1) and (b2), α-hydro-ω-hydroxy-poly-(oxytetramethylene) with the molecular weight ranging from 500 to 5000 g/mol and hydroxy functionality of 2,0; (b2) 15-50 mol-% in regard to b1) and b2), α-hydro-ω-hydroxy-poly-(oxypropylene-1,2) and/or α-hydro-ω-hydroxy-poly-(oxypropylene-1,2-so-oxyethylene) with the molecular weight ranging from 900 to 4000 g/mol and hydroxy functionality ranging from 1,9 to 2,7, whereas the hydroxyl value of the polyol mixture of (b1) and (b2) ranges from 36 to 90 mg KOH/g; and (B) at least one chain extender taken from a group of aliphatic diols with two hydroxil groups (preferably where they are primary groups) and the average molecular weight ranging from 62 to 202 g/mol, trifunctional polyols, polyols (b1), polyols (b2), water and their mixtures, as well as aromatic diamines; (C) if required, additive agents and supplements, where the molecaular ratio of the NCO-groups to the active groups of all components ranges from 1,04 to 1,25 and the ratio of the storage modulus G' measured at -30°C and the same parameter measured at 110°C (in accordance with DIN EN ISO 6721-1) ranges from 0,8 to 2. Described is a method of producing the said cast elastomers.

EFFECT: production of the polyurethane materials with improved properties related to the temperature dependence of material properties: storage modulus G', loss-angle tangent tanδ and loss modulus G'' while retaining all other good properties.

2 cl, 12 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relate to a composition used as an agent which promotes cell opening or as a rheology modifier, containing a mixture of compounds of formula where: R1 is a monoalkoxy polyoxyalkylene monovalent radical, having average molecular weight of 500-5000; R2 is a divalent hydrocarbon radical, having average molecular weight of 28-500; n is equal to at least 1, and the average value of n is greater than 1; where the mixture is present in the composition in amount of at least 80 mol %. The invention also describes a method of preparing said composition and use thereof, a method of producing polyurethane foam using said composition and the foam itself produced using said method, as well as a mixture used to produce urethane foam, containing said composition.

EFFECT: novel composition which enables to obtain non-shrinking polyurethane foam with open cells.

19 cl, 15 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing dispersions of blocked polyurethane prepolymers, use of dispersions obtained using said method to produce coating agents, adhesive substances and sealants and elastomers, said application products themselves, as well as substrates provided with coating agents. The method involves the following: I) a blocked polyurethane prepolymer is obtained first by reacting a) 100 equivalent % of at least one polyisocyanate with b) 50-90 equivalent %, in terms of isocyanate reactive groups, of a thermally split blocking agent, c) 5-45 equivalent %, in terms of isocyanate reactive groups, monohydroxycarboxylic acid as a hydrophilic agent and d) 0-25 equivalent %, in terms of isocyanate reactive groups, of polyhydroxycarboxylic acid as a hydrophilic agent and e) 0-15 equivalent %, in terms of isocyanate reactive groups, of at least one, in terms of isocyanate reactive groups, di- or polyfunctional component of a chain extender with molecular weight from 32 to 350 g/mol, where i) this takes place using (partially) water-miscible organic solvents which are inert to NCO-groups and have boiling point lower than 120°C (at 1013 mbar), ii) and they are used in such an amount that the polyurethane prepolymer contained in the reaction solution after complete conversion ranges from 70 to 98 wt %. Further, II) the polyurethane prepolymer solution obtained at step (I) is dispersed in water, where before, during or after dispersion, deprotonation of carboxylic acid groups with a base takes place at least partially, and then III) if needed, the contained organic solvent is completely removed during dispersion via distillation.

EFFECT: obtaining polyurethane dispersions which are stable during storage, endow said products of their application with good optical properties, high resistance to chemical reagents and pendulum hardness.

13 cl, 10 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: coating composition contains polyurea obtained from a reaction mixture containing: a) a first component containing isocyanate; and b) a second component containing (meth)acrylated amine obtained through a reaction between a polyamine and mono(meth)acrylate, and at least one additional amine selected from: (a) a product of a reaction between (meth)acrylate, dialkylmaleate and/or dialkyl fumarate and an amine; (b) a diamine with the structure , where R3-R6 independently denote C1-C10 alkyl; (c) a diamine with the structure , where R7-R10 independently denote C1-C10 alkyl; (d) polyoxyalkylene diamine and/or polyoxyalkylene triamine, having primary amino groups or secondary amino groups which are not formed as a result of reaction between polyoxyalkylene diamine and/or polyoxyalkylene triamine and (meth)acrylate; (e) a diamine containing an aspartic ester functionality and does not contain any other functionality which might be reactive towards isocyanate; (f) a product of a reaction between triamine and diethylmaleate and/or dibutylmaleate; and/or (g) a product of a reaction between a polyamine and mono- or polyepoxide; where the ratio of isocyanate group equivalents to amine group equivalents is greater than 1, and isocyanate and (meth)acrylated amine, which is a reaction product, can be deposited onto a substrate in volume ratio of mixture components equal to 1:1. The invention also describes a method of coating a substrate, involving deposition onto at least part of the substrate of said coating composition, and a substrate at least partially coated by a coating made from said composition.

EFFECT: preparing coating from disclosed coating composition, which does not give aftertack from the substrate, has good hardness and endows the substrate with corrosion resistance, wear resistance, impact resistance, fire- or heat resistance, chemical resistance, structural integrity and decoration.

13 cl, 13 ex, 3 tbl

FIELD: construction.

SUBSTANCE: invention relates to the method of manufacturing of a modular viscoelastic elastic foam material. The method includes interaction of polyisocyanate and polyol at the index of 60-95 and application of a foaming agent. The polyol represents a polyol composition, which contains 5-50% and preferably 10-40% of the applied polyols of castor oil. Also a viscoelastic foam material and a polyol composition are proposed to manufacture a viscoelastic resilient foam polyurethane.

EFFECT: production of foam materials, which may be used in furniture industry in places for seats, in shock-absorption elements.

9 cl, 1 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a fluid polyurethane composition which is stable during storage and which is used to produce polyurethane elastomeric products, including: (a) one or more polyurethane prepolymers with terminal isocyanate groups obtained from one or more diisocyanates and/or triisocyanates containing a hydrocarbon ring, and one or more polyols; (b) one or more methylene dianiline complexes of metal salts; and (c) one or more organic acid halides, having one or more acid halide groups, where one or more organic acid halides are present in an amount where organic acid halide groups are present in minimal concentration equal to approximately 100 ppm in terms of the weight of the polyurethane prepolymer. The invention also relates to a method of storing the curable polyurethane composition and polymer elastomeric product obtained using a method which involves heating the polyurethane composition which is stable during storage.

EFFECT: obtaining a polyurethane composition which is curable until obtaining an elastomeric polyurethane product at the corresponding curing temperature while also demonstrating stability and fluidity during storage at relatively high temperatures.

15 cl, 9 ex, 14 tbl

FIELD: chemistry.

SUBSTANCE: polyurea and polythiourea contained in the disclosed compositions are obtained from a reaction mixture containing: a first component which contains isocyanate and isocyanate-functional polythioether-polyurethane and/or polythiourethane; and a second component containing an amine; from a reaction mixture which contains: a first component containing isocyanate; a second component containing amine and amine/hydroxy-functional polythioether; and from a reaction mixture containing a first component which contains isocyanate and isocyanate-functional polythioether-polyurethane and/or polythiourethane; and a second component containing amine and amine/hydroxy-functional polythioether, respectively.

EFFECT: obtaining compositions whose coatings applied on a substrate have significant longevity, avoid tackiness of the layer and dampen explosion pressure or ballistic impact on the substrate.

37 cl, 15 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a metal substrate coated, at least partially, with a coating in form of a multilayer composite comprising at least one layer selected from an electrodeposited coating layer, a base coating layer and a transparent coating layer; and a coating containing polyurea obtained from a reaction mixture containing isocyanate and a product of reaction between a monoamine and poly(meth)acrylate, which is (meth)acrylated amine, in which the ratio of isocyanate group equivalents to amine group equivalents is greater than 1.3:1, and isocyanate and the reaction product, which is (meth)acrylated amine, can be deposited on the substrate in volume ratio of concentration of components of 1:1. The invention also describes a building having a structural element coated, at least partially, with a coating from said polyurea, as well as a substrate coated, at least partially, with a coating from said polyurea, where the ratio of isocyanate equivalents to amine group equivalents is greater than 1.3:1.

EFFECT: coating can attenuate an explosion, eg, protection in case of an explosion or breakage in the immediate vicinity of flying debri formed by an explosion wave.

21 cl, 3 tbl

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