Aqueous single-component dispersion undercoating for gluing polymeric films with dispersion adhesives

FIELD: chemistry.

SUBSTANCE: aqueous polyurethane dispersion composition contains polyurethane with carbodiimide and/or carboxyl groups, and polyurethane dispersion adhesive which contains polyurethane with carbodiimide and/or carboxyl groups. The polyurethanes are polyester-polyurethane elastomers. The aqueous polyurethane dispersion composition and polyurethane dispersion adhesive also contain at least one carbodiimide which contains at least one carbodiimide group. The aqueous polyurethane dispersion composition and polyurethane dispersion adhesive react with each other through a polyaddition reaction when heated to 50°C or higher. A polymeric film having an undercoating is obtained by depositing and drying the single-component aqueous polyurethane dispersion composition on a polymeric film. A composite is obtained by reacting the polymeric film having an undercoating with a substrate on which polyurethane dispersion adhesive is deposited and dried. The composite can be produced industrially and can be especially used in interior finishing, preferably of a component built into a transportation vehicle or can be used in the furniture industry.

EFFECT: high reliability of the composition.

5 cl, 3 tbl

 

The technical field

The invention relates to the field of water dispersion compositions for primer and bonding of polymer films by means of dispersion adhesives.

The level of technology

Aqueous dispersion adhesives are widely used, particularly for bonding textiles.

For bonding films, especially decorative films, dispersion adhesives usually films pre-treated with a primer coating. These primer coatings, usually based on the solvents and therefore harmful for reasons of industrial hygiene and safety. Also known waterborne polyurethane primer coating containing sulphonate groups. However, these primer coatings are characterized by deficiencies in relation to climatic and thermal load and therefore often lead to premature disruption of the bonding process.

For water dispersion glues recently installed the tendency to develop one-component aqueous dispersion adhesives. So, in the international application WO 2005/113627 A1 describes aqueous one-component dispersion adhesives based on polyurethane with carboxyl groups and carbodiimide groups or polyurethane with carboxyl groups and carbodiimide.

However, it was shown that these one-component dis is erinnyes adhesives also have an advantage when used as a primer coating. However, known systems for primer coatings are characterized by the above-mentioned disadvantages.

The invention

The objective of the invention is to solve the problems of the prior art, and in particular, a method for reliable bonding of polymer films by aqueous one-component dispersion adhesives.

It has been unexpectedly found that this problem can be solved when using aqueous polyurethane dispersion composition as a primer coating according to paragraph 1 of the claims.

The next aspect of the present invention is a polymer film with a primer coating according to paragraph 8 of the claims. It turned out that such a protective layer film contains no glue, can be folded without interlayer adhesive paper, does not lead to the bonding of the individual layers and thus may be referred to as "nokiausa".

The following aspects of the present invention are composite according to p. 10 claims, as well as its manufacturing method according to p. 12 claims.

Following a preferred form of execution of the invention are given in the dependent clauses. It turned out that with this invention can be obtained composites, especially with films bonded polymer and fiber, which is harakteryzuyutsya improved behavior when climatic and thermal load.

The way of carrying out the invention

This invention relates, on the one hand, application of one-component aqueous polyurethane dispersion composition (PD) as a primer coating for bonding plastic films (PP) through the aqueous one-component polyurethane dispersion adhesive (DK).

When this aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 and carbodiimide groups and/or carboxyl groups, and the polyurethane dispersion adhesive (DK) contains a polyurethane P2, and carbodiimide groups and/or carboxyl groups, so that the aqueous polyurethane dispersion composition (PD) and the aqueous polyurethane dispersion adhesive (DK) when heated to a temperature of 50°C or more react with each other by means of polyaddition reactions.

Carbodiimide groups react with the carboxyl groups under the influence of heat.

Thus, the following different ways:

a) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carbodiimide groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carboxyl groups;

b) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carboxyl groups, and the aqueous polyurethane dispersion glue the (DK) contains a polyurethane P2 with carbodiimide groups;

C) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carbodiimide groups and carboxyl groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carboxyl groups;

d) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carbodiimide groups and carboxyl groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carbodiimide groups;

e) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carbodiimide groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carbodiimide groups and carboxyl groups;

f) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carboxyl groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carbodiimide groups and carboxyl groups;

(g) aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carboxyl groups and carbodiimide groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carbodiimide groups and carboxyl groups.

To ensure that the polyaddition reaction of aqueous polyurethane dispersion composition (PD) the aqueous polyurethane dispersion adhesive (DK) when heated to a temperature of 50°C or more with each other, in the implementation of the C), (d), (e) and (f), i.e. where the polyurethane dispersion composition (PD) and/or in the aqueous polyurethane dispersion adhesive (DK) contains carbodiimide groups and at the same time carboxyl group, you should pay attention to the fact that those of these functional groups, which are available only in the polyurethane dispersion composition (DDor only in the aqueous polyurethane dispersion adhesive (DK), are present in stoichiometric excess in relation to other functional groups in the polyurethane dispersion composition (DDand/or in the polyurethane dispersion adhesive (DK), where as carbodiimide groups and carboxyl groups.

Thus, there are:

c) in the polyurethane dispersion composition (DD) carbodiimide group in stoichiometric excess relative to carboxyl groups;

d) in the polyurethane dispersion composition (DD) carboxyl group in stoichiometric excess relative to the carbodiimide groups;

e) in the polyurethane dispersion adhesive (DK) carboxyl group in stoichiometric excess relative to the carbodiimide groups;

f) in the polyurethane dispersion adhesive (DK) carbodiimide group in stoichiometric excess relative to the carboxyl the groups.

In the implementation of the (g) respectively, one of the functional groups (carbodiimide group or carboxyl group) in the polyurethane dispersion composition (DD) must be present in stoichiometric excess, while in the polyurethane dispersion adhesive (DKthis functional group present in stoichiometric deficiency.

Carboxyl groups are preferably bound with polyurethaneP1and/or polyurethaneP2.

Carbodiimide group is preferably embedded in the polyurethaneP1and/or polyurethaneP2.

The preferred carbodiimide group characterized by the formula (I):

Carboxyl groups are preferably linked in the polyurethaneP1and/or polyurethaneP2.

In one preferred form of execution of the aqueous polyurethane dispersion composition (DDcontains carbodiimide groups that are embedded in the polyurethaneP1.

In another preferred form of execution of the aqueous polyurethane dispersion composition (DDcontains carboxyl groups, which are connected with polyurethaneP1.

PolyurethaneP2that is in the aqueous polyurethane dispersion adhesive (DK), on the one hand, preferably is a polyurethane(PUR-COOH-CDI)that contains as carbod kidnie group, and carboxyl group.

PolyurethaneP2that is in the aqueous polyurethane dispersion adhesive (DK), on the other hand, preferably is a polyurethane(PUR-COOH)that contains a carboxyl group. Preferably, the dispersion adhesive (DK) included one such polyurethane(PUR-COOH)further, at least one of carbodiimide (CDI)(The OED), characterized by at least one carbodiimide group.

Carbodiimide such (The OED) are compounds containing at least one carbodiimide group-N=C=N-, but not containing carboxyl groups. Especially suitable carbodiimide (The OEDare those characterized by a structural element of the formula (I):

Especially suitable carbodiimide (The OED) this kind are, for example, those described in international application WO 00/11060 as "Carbodiimide Ibii".

In the following a preferred form of execution of the polyurethane dispersion composition (DDcontains at least one carbodiimide (The OEDcontaining at least one carbodiimide group, as described above.

In the most preferred form of execution of the aqueous polyurethane dispersion composition (DDincludes as a polyurethane in which the iMER P1polyurethane polymer(PUR-COOH),containing carboxyl groups, and the aqueous polyurethane dispersion adhesive (DKincludes as a polyurethane polymerP2polyurethane polymer(PUR-CDI),containing carbodiimide groups, or polyurethane polymer(PUR-COOH-CDI)containing carbodiimide groups and carboxyl groups, and in the latter case, carbodiimide groups in the polyurethane polymer (PUR-COOH-CDI) are in stoichiometric excess relative to the carboxyl groups.

Polyurethane polymer P1 and a polyurethane polymer P2 preferably do not contain sulphonate groups.

Polyurethane polymers P1 and P2 receive well-known specialist methods for aqueous dispersions, usually from polyisocyanates and compounds active against NCO-groups, as the polyols.

Polyurethanes with carboxyl groups (PUR-COOH) are polyurethanes containing at least one carboxyl group per macromolecule. Such compounds have long been known and used in the compositions of the aqueous polymer dispersions. They are usually produced from polyisocyanates and compounds containing carboxyl groups and is active against NCO-groups, and, if necessary, ordinary polyols, in particular diols. Such compounds containing carboxyl groups and active the e in respect of NCO groups, represents, for example, aminocarbonyl acid, hydroxycarbonate acid, in particular dihydroxyacetophenone acid, as, for example, Dimethylol-propionic acid, or in addition, structurally similar diol-carboxylic acid. It turned out that a very suitable polyurethanes with carboxyl groups (PUR-COOH) are described, for example, as "polymer PII" in the application Germany DE 10000656 A1 or international application WO 01/34559 A1.

Polyurethanes with carboxyl groups and carbodiimide groups (PUR-COOH-CDI) are polyurethanes, which in addition to carboxyl groups also contain carbodiimide group-N=C=N-

Particularly preferred polyurethanes with carboxyl and carbodiimide groups are such PUR-COOH-CDI, which are characterized by a structural element of the formula (I):

Such compounds are described, for example, in the application Germany DE 10001777 A1 or as "polymer (Ia)in the European patent EP 1000104 B1.

It was preferred that the polyurethane dispersion composition (PD) and/or dispersion adhesive (DK) simultaneously contains at least one carbodiimide (CBI) and at least one polyurethane with carboxyl groups and carbodiimide groups (PUR-COOH-CBI).

The advantage can be chevagny dispersion adhesive simultaneously contains, at least one polyurethane with carboxyl groups and carbodiimide groups (PUR-COOH-CBI) and at least one polyurethane with carboxyl groups (PUR-COOH).

One-component aqueous polyurethane dispersion composition (PD) and one-component polyurethane dispersion adhesive (DK) further contain water. Usually the proportion of water is between 70 and 40 wt.%, especially between 55 and 45 wt.%.

Aqueous polyurethane dispersion composition (PD) and in particular one-component polyurethane dispersion adhesive (DK) further may contain at least one copolymer a, which is either a copolymer of ethylene and vinyl acetate (EVA) (EVA), or a copolymer of monomers of ethylene, vinyl acetate and at least one (meth)acrylate.

Next one-component aqueous polyurethane dispersion composition (DDand/or one-component polyurethane dispersion adhesive (DK) preferably contain additional components. Additional components, in particular components are selected from the group consisting of stabilizers, thickeners, antioxidants, fungicides, pigments, dyes, wetting, antispyware, matting agents, catalysts and fillers.

Mainly suitable such stabilizers are commonly used to water the dispersions. However, it was shown that the use of stabilizers leads to a very large stability during storage of the dispersion adhesives and polyurethane dispersion compositions, if the stabilizer is selected from the group comprising wetting, cellulose, polyvinyl alcohol, polyvinylpyrrolidone, and mixtures thereof.

Particularly preferred dispersion adhesives and polyurethane dispersion compositions which do not contain organic solvents, in particular do not contain the so-called VOC (VOC) (volatile organic compounds) and/or plasticizers. As plasticizers and organic solvents are toxic from an environmental point of view and for reasons of industrial hygiene. Further, the plasticizers can migrate to the surface and to cause bonding or lead to the fact that the surface becomes sticky, which leads to contamination of the adhesive joints. Solvents are also undesirable because, on the one hand, they can bring in additional potential hazard when heated and when the glue is applied, and as, on the other hand, they also migrate and after a long time can go into the environment and the materials that are in contact with the glue, and this has a negative impact, or is likely to cause bonding.

Getting onecomponent the Noah aqueous polyurethane dispersion composition ( DDand/or one-component polyurethane dispersion adhesive (DK) is well-known specialist types and methods for water dispersion and dispersion adhesives, as they are described, for example, in international application WO 2005/113627 A1.

One-component aqueous polyurethane dispersion composition (DD) is used as a primer coating for bonding plastic films (PMthrough aqueous one-component polyurethane dispersion adhesive (DK).

The term "ground floor" in this document used in the ordinary meaning understood by a specialist, namely, how do thin layer, usually thinner than 1 mm, in particular between 1 and 200 micrometers, preferably between 1 and 100 micrometers, which is applied on the polymer film (PMand after drying is brought into contact with the adhesive, and this leads to improved adhesion of the adhesive to the polymer film.

The term "drying" in the entire document to understand the drying aqueous polyurethane dispersion composition and/or the aqueous polyurethane dispersion adhesive after application, and the water completely or, at least, mostly evaporates. This document is similar to the dried aqueous polyurethane dispersion composition or the aqueous polyurethane dispersion adhesive denote 'accordinglyDK'.

The term "polymer film" particularly understand flexible flat polymeric material with a thickness of from 0.05 to 5 mm, which can be minimized. Thus, in addition to the "films" in the strict sense of thickness less than 1 mm also understand insulating tape, which is usually used for sealing of tunnels, roofs or basins with a thickness of typically 1-3 mm, in special cases even with thickness up to 5 mm Such polymer films (PM) a typical image obtained by promazyvanija, casting, calendering or extrusion and are usually manufactured for commercial purposes in the form of rolls or roll) on the spot. They can be single-layer or multi-layer.

The polymer preferably is a thermoplastic polymer, such as PVC, particularly plasticized polyvinyl chloride, a copolymer of ethylene with vinyl acetate (EVA), or thermoplastic polyolefin (TPO), ASA (Acrylonitrile/styrene/acrylic ester), PUR (polyurethane), PA (polyamide), poly(meth)acrylates, polycarbonates, PET (polyethylene terephthalate) or the polymer mixture. As a particularly preferred are appreciated PVC and thermoplastic polyolefins (TPO).

Thus, another aspect of the present invention includes a polymer film with a primer coating, which is obtained by applying and drying the deposits aqueous polyurethane dispersion composition ( DDcontaining at least one polyurethaneP1and carbodiimide groups and/or carboxyl groups on the polymer film (PM). One-component aqueous polyurethane dispersion composition (DD) and polymer film (PM) have already been described.

Obtaining the polymer film with a primer coating may be performed in various ways. Application of the aqueous polyurethane dispersion composition (DDcan occur, for example, by spraying, application by trowel, squeegee, stamp, roller or spray. When applying the adhesive spray - this method is used preferably, however, should take into account the problem of so-called "perirectal" (excess substances when spraying). Usually the application is conducted through the use of a single dose application.

After applying the aqueous polyurethane dispersion composition (DDits dried, resulting in getting dried aqueous polyurethane dispersion composition (DD'), which forms a film. This film is designated as a primer coating. Drying can occur by evaporation in air with or without drying devices. As the drying device can be, for example, a fan, especially blower. Preferably use one you is usevalue device. The drying may occur at room or higher temperatures, particularly at temperatures below 150 º C. The drying preferably takes place at a reduced temperature, for example, by the Carnot cycle.

Made of polymer film with a primer coating of this kind now depending on needs may be removed, cut, wound or directly processed further. Rolls with a polymer film with a primer coating can now depending on the needs to be stored or transported. A significant advantage of the described polymer films with a primer coating is that they can be wound without interlayer adhesive paper, as well as after long-term storage or transportation does not occur clumping wound film. So, for example, from the producer of the film can be made of a polymeric film with a primer coating, which then can be stored for a long time and then delivered to the production, where these pre-coated film is glued to the carrier. Despite this long period of time between coating and processing is ensured adhesive bonding. This advantage is particularly important because in the industry, especially the manufacture of tra the transport means, you can observe the trend of production "from the primary node to the supplier". This trend continues with his hand between the direct provider, for example, (supplier) car doors and their suppliers, for example, (suppliers) decorative materials. Expert it is clear that despite this, under known conditions can be an advantage to use a layer of adhesive paper.

The resulting polymer film with a primer coating preferably glued using water dispersion adhesive to form a composite.

Thus, another aspect of this invention relates to a composite material and method of its production.

The composite receive through method, which includes the following stages:

application of the aqueous polyurethane dispersion composition (DD) on a polymer film (PM);

drying polyurethane dispersion composition (DD) with the formation of dried polyurethane dispersion composition (PD');

application of the aqueous polyurethane dispersion adhesive (DK) on the substrate;

drying aqueous polyurethane dispersion adhesive (DK) with the formation of dried polyurethane dispersion adhesive (DK');

heating of the polymer film (PMwith dried her polyurethane di the dispersion composition ( PD');

contacting the dried polyurethane dispersion adhesive (DK'with the polyurethane dispersion composition (PD'), dried after (ii).

Stage (iv) and (v) can occur one after another or simultaneously. Aqueous polyurethane dispersion composition (DD) and the aqueous polyurethane dispersion adhesive (DK) have already been described above.

Application of the aqueous polyurethane dispersion adhesive (DKcan occur, for example, by spraying, application by trowel, squeegee, stamp, roller or spray. However, when applying the adhesive spray - this method is used preferably should take into account the problem of so-called "perirectal" (excess substances when spraying). Usually the dispersion adhesive is applied in an amount of from 30 to 200 g/m2(wet.), preferably 60 to 120 g/m2(wet.) on the surface, to which adhesion.

In a preferred form of execution stage contact (vi) occurs when the pressure exerted on the film. Preferably this pressure is 0.1-1 bar, more preferably at least 0.8 bar. This pressure is preferably produced by applying vacuum between the film and the substrate, preferably by suction of air from the space is between the dried polyurethane dispersion adhesive ( DK') and dried polyurethane dispersion composition (PD').

Preferably dried polyurethane dispersion adhesive (DK') when contacting stage (vi) is characterized by a temperature of 50 º C or more, in particular a temperature between 50 and 180ºC, most preferably between 60 and 80.

Under the influence of the temperature from 50 º C or more carbodiimide groups react by polyaddition reactions with the formation of N-allocation with carboxyl groups. Thus, primer coating, i.e. the dried polyurethane dispersion composition, and dried polyurethane dispersion adhesive chemically react with each other. After heating a layer of unreacted primer coating (Pwith a reacted layer of glue (To). Expert it is clear that depending on the thickness of the layers and the way the reaction can pass completely or incompletely. Next the specialist is clear that these layers are often not clearly demarcated with each other, because depending on the selected combination compositions and adhesives, as well as the parameters of the method, for example, through migration, may form the transition layer. Therefore, to get perhaps a better cure, there is an advantage if at least the aqueous dispersion adhesive (DK), or dried aqueous dispersion is ion-glue ( DK'and, if necessary, also aqueous polyurethane dispersion composition (DD), or primer coating, at the same time contain carbodiimide groups and carboxyl groups, in particular in the form of a polyurethane polymer with carboxyl groups and carbodiimide groups(PUR-COOH-CDI)or in the form of a polyurethane polymer with carboxyl groups(PUR-COOH)and carbodiimide (CDI).

The substrate (With), often also referred to as "media", can be of various kinds and nature. The substrates can be, for example, from metal, lacquered metal, polymer, wood, chipboard or fibrous materials. The substrate preferably is a solid molded body.

Thus, the so-obtained composite includes at least:

one polymer film (PM);

one unreacted primer coating (P),

- one reacted glue (To), and

one substrate (With).

This unreacted primer coating is obtained from the one-component aqueous polyurethane dispersion composition (DD), and reacted glue is obtained from the one-component aqueous polyurethane dispersion adhesive (DK).Next, unreacted primer coating (P) is located between the polymer film( PM) and reacted with glue (To), and reacted glue (To) is located between the unreacted primer coating (P) and the substrate (With). Aqueous polyurethane dispersion composition (DDcontains, as described above, the polyurethaneP1and carbodiimide groups and/or carboxyl groups, and the polyurethane dispersion adhesive (DKcontains polyurethaneP2and carbodiimide groups and/or carboxyl groups.

While carboxyl groups and carbodiimide groups react when heated to a temperature of 50 º C or more to each other via a polyaddition reaction. As a consequence, the unreacted primer coating (P) and reacted glue (Todirectly linked to each other by a chemical reaction.

The so formed composite preferably is manufactured objects and, in particular, subject to internal finishes. Preferably it is used as an embedded item in the vehicle or in the furniture industry.

Especially important is the use of polymer films with a primer coating for the manufacture of parts of the inner lining of vehicles, particularly cars. Examples of such internal details are facing sidewall doors, RAS is realitalia shields, cover boxes, precast arch, removable arch, the Central instrument panel, glove box, sun hood, pillars, door handles and arm, gutters, attic spaces, bins and racks and partitions sleeping cabins and shelves of vehicles for transporting goods and trucks.

For this purpose, in particular, use the method of deep drawing a vacuum or bonding by pressing in the way of sealing.

In the method of deep drawing a vacuum dispersion adhesive is applied to the substrateWithalso called a carrier. Then are dried, for this invention at room temperature or in a drying channel, most preferably at a temperature of 40ºC. Usually films with a primer coating (decor made from breathable material) placed in airtight frame. Under film is the substrate, which is the media. The substrate and carrier are impermeable or permeable. The unit further isolated from the air. Now, when the exhaust air from this unit decorative material is pressed exactly at the part of the carrier under the load of atmospheric pressure on its surface. Decorative material before application of vacuum or reduced pressure is heated. Decorative material in relation to the created vacuum or ponie nomu pressure is airtight.

In the method of bonding by pressing the adhesive is also applied to the carrier and, if necessary, the polymer film with a primer coating (decor), but at least to the media. Then are dried, usually at room temperature or in a drying channel, most preferably at a temperature of 40ºC. The bonding media decor occurs after the activation heat when connecting and pressing.

Used here, the polymer film with a primer coating are often decorative films and characterized by the surface structure. This surface structure on the polymeric film may be embossed, for example, before or during, or after bonding.

Brief description of drawings

Further, the invention is illustrated schematically with the aid of the drawings. The same elements in different drawings are provided with the same designations. The movement is shown by arrows. The drawings show the following:

Figure 1 - structure of the composite, as well as intermediate stages:

Figa is a cross section of the polymer film (PM), which is applied to one-component aqueous polyurethane dispersion composition (DD).

Fig.1b is a cross section of the substrate (With), which caused one-component aqueous polyurethane dispersion adhesive (DK).

Figure 1 is - the cross-section of the composite after gluing and heating.

Figure 2 - method of obtaining a polymer film with a primer coating.

Figure 1 shows a possible intermediate stage in obtaining composite.

On figa shows a polymer film (PM), which is applied to one-component aqueous polyurethane dispersion composition (DD), before it is dried. After drying one-component aqueous polyurethane dispersion composition (DD) is formed of a dried aqueous polyurethane dispersion composition (PD'), which is called the primer coating.

On fig.1b shows the substrate (With), which caused one-component aqueous polyurethane dispersion adhesive (DK), before it is dried. After drying one-component aqueous polyurethane dispersion adhesive (DK) is formed of a dried aqueous polyurethane dispersion adhesive (DK').

Then the polymer film with a primer coating is combined with a substrate (Withthrough the dried glue (DK') and subjected to curing by heating. By heating the primer coating and the adhesive react and form a composite, which is schematically depicted in Fig. 1C, with the polymer film (PM), which is associated with the substrate (With) through the your unreacted primer coating ( P) and reacted glue (To). In a preferred form of execution of the film with a protective coating before contacting heated so that it becomes plasticized, and glued together under pressure dried glue (DK''s )on the substrate (With).

In Fig. 2 schematically depicts obtaining the polymer film with a primer coating 1. In here the form of the one-component aqueous polyurethane dispersion composition (DDthrough the metering device 4 is applied on the polymer film (PM). When this polymer film is performed under a metering device 4. Usually polymer film otmachivajut from a roll (not shown). Then, based on the aqueous polyurethane dispersion composition (DD) is dried by the drying device (e.g., blower). Such dried aqueous polyurethane dispersion composition (DD) to form a primer coating on the polymeric film. In Fig. 2 shows that the polymer film with a primer coating is wound. Forth in Fig. 2 in the bottom part shows an enlarged schematic fragment of the coil 3 is wound polymer film with a primer coating. Due to the coiling of the polymer film coated with layers of a polymeric film with a primer coating are in direct the Ohm contact with each other and in particular do not have layers of release paper. Polymer film with a primer coating optionally may be unwound from the roll 3 without clumping, also after long time storage or transport.

Examples

The following examples serve to illustrate the invention.

Polymer film with a primer coating

Primer coating, are shown in table 1, was applied using a doctor blade to a thickness of about 10 microns dry film PVC (thickness 1.6 mm) and dried in a drying Cabinet at 50about(Film temperature).

Table 1
Used primer coating
SRCommercially available polyurethane dispersion primer coating
2Aqueous polyester-polyurethane dispersion primer coating with sulphonate groups (Dispercoll U, Bayer AG (percent polymer 40 wt.%)
P1Water dispersion of a polyester-polyurethane elastomer with carboxyl and carbodiimide groups.
Viscosity = 50-300 MPa·s
The particle size = about 0.1 ám
Value To Financiero = approx 30-60
Tensile strength (film) - about 30 N/m is 2
Elongation at break (film) = approx 800%
The content of water = approx 60 %

Film with a primer coatingP1according to the invention can be stored without interlayer adhesive paper without any glued areas (blocks).

Getting one-component aqueous polyurethane dispersion adhesive

Obtaining aqueous polyurethane dispersion adhesive was as follows.

50 g of a water dispersion of a copolymer of ethylene with vinyl acetate (EVA) (ethylene/vinyl acetate = 17%/83%, a viscosity (Brookfield viscometer Brookfield RTV 3/20 (ISO 2555))=3800±1000 MPa·s, pH=4-5, water content: 40±1%) were placed in the apparatus with stirrer. After the establishment of the pH by adding sodium hydroxide solution (0.2 g of 25 % NaOH in water) to a value between 7.5 and 8.5, was mixed into 50 g of polyurethane dispersion with carboxyl and carbodiimide groups (viscosity (23ºC, 250-1according to DIN ISO 976) =50-300 MPa·s, particle size = about 0.1 micron, is To Financiero = approx 30-60, tensile strength (film) = about 30 N/mm2the elongation at break (film) = approx 800 %, water content : 60%). Then added 5 g of oligocarbonate (the content of the carbodiimide (est. on the polymer) = about 12%, about 3 mol/kg, viscosity (23ºC, 250-1according to DIN ISO 3219)=10-500 MPa·s, pH 8-10, water content: 80%). After subsequent stirring for approximately 20 minutes was established elm is ity dispersion adhesive by 0.2 g of thickener (Borchi® Gel L 75 N, Borchers GmbH) to the viscosity of between 5000 and 6000 MPa·S. thus measured the viscosity at 20aboutWith using RTV Brookfield viscometer with spindle about 3/5/m (UpM). Dispersion glue was characterized by a share of the water about 50 wt.%.

Obtaining composite

The above-described aqueous polyurethane dispersion adhesive was applied on PVC film (thickness 1.6 mm) with a wet film thickness of around 150 μm, dried at room temperature and glued by the method of hot printing (printing temperature 70 º C) film with a primer coating.

Bonding was carried out with a heated floor press (the temperature of the plates 100 º C) for 15 seconds so that the glue line was implemented 70 º C temperature.

Test methods

-Temperature resistance in long-term test (Schälstandversuch) (double definition)

For this purpose, the samples for testing 2.5 cm in width, were placed in a heat chamber and a loaded weight of 300g

Samples for testing were left in a preheated oven, since the temperature of 80 ° C for one hour, and then after each of the next hour the temperature in the furnace was increased for the next 10.

Under this load the adhesive joint was opened, depending on time and temperature. The plot of disclosure ("dL") glued seam was measured and designated as dL(80 ° C), dL(90ºC), dL(100ºC), dL(110 º C) and dL(120 ºC). If the origin is leave a gap, measure this. The plot of disclosure or time give information about the quality of bonding.

Test for resistance to climate change (double definition)

Obtaining samples for testing were similar to the tests for resistance. The actual test was under test BMW-3.08 with 300 g load. To do this, asked the following profile test:

4 h of incubation at 90 º (80% Rel. humidity)

2 hours and cooling to -30 º C (80% Rel. humidity)

4 h of incubation at 30ºC (80% Rel. humidity)

2 h, heated to 90ºC (80% Rel. humidity)

After completing one cycle of the test measured the area of disclosure ("dB"). Here the site also gives information on the stability of the connection after the load climate change.

Results: The results are summarized in tables 2 and 3.

Table 2
thermal stability of the composite film with a primer coating. These numbers refer respectively to the first or second dimension.
Used primer coatingSR2P1
dL(80 ° C) [mm]9/20 15/111/0
dL(90ºC) [mm]30/7595/872/2
dL(100ºC) [mm]Gap:20 min/9 minGap:3min/min5/6
dL(110 º C) [mm]9/11
dL(120 ºC) [mm]15/19

Table 3
Stability test on climate change of the composite film with a primer coating. These numbers refer respectively to the first or second dimension.
Used primer coatingSR2P1
dB[mm]gapgap28/32

The results clearly show the advantage of the invention, in which nosit characterized obviously the best behavior in terms of heat resistance and resilience to climate change.

The list of designations

1 - Film primer coating;

2 - Drying device;

3 - Roll to wound film with a primer coating;

4 - Metering device;

KF (PP) plastic film;

PD (PD) - polyurethane dispersion composition;

PD' (DD') - dried polyurethane dispersion composition;

DK (DK)aqueous polyurethane dispersion adhesive;

DK' (DK') - dried aqueous polyurethane dispersion adhesive;

P (P)is reacted primer coating;

K (K) is reacted glue.

1. Application of one-component aqueous polyurethane dispersion composition (PD) as a primer coating for bonding plastic films (PP) through the aqueous one-component polyurethane dispersion adhesive (DK);
where the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carbodiimide and/or carboxyl groups, and the polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carbodiimide and/or carboxyl groups, where P1 and P2 are the polyester-polyurethane elastomer, so that the aqueous polyurethane dispersion composition (PD) and the aqueous polyurethane dispersion adhesive (DK) when heated to a temperature of 50°C or above react with each other by means of polyaddition reactions, being the m following options:
a) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carbodiimide groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carboxyl groups;
b) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carboxyl groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 carbodiimide groups;
c) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carbodiimide groups and carboxyl groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carboxyl groups;
d) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carbodiimide groups and carboxyl groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carbodiimide groups;
e) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carbodiimide groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carbodiimide groups and carboxyl groups;
f) the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carboxyl groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carbodiimide g is uppada and carboxyl groups;
(g) aqueous polyurethane dispersion composition (PD) contains a polyurethane P1 with carboxyl groups and carbodiimide groups, and the aqueous polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carbodiimide groups and carboxyl groups.

2. The use according to claim 1, characterized in that the carbodiimide group is characterized by the formula (I)

3. The use according to claim 1 or 2, characterized in that the polyurethane dispersion composition (PD) contains a polyurethane P1 with carbodiimide groups.

4. The use according to claim 1 or 2, characterized in that the polyurethane dispersion composition (PD) contains a polyurethane P1 with carboxyl groups.

5. The use according to claim 3, characterized in that the polyurethane dispersion composition (PD) contains a polyurethane P1 with carboxyl groups.

6. The use according to claim 1 or 2, characterized in that the polyurethane P2, which is located in the aqueous polyurethane dispersion adhesive (DK)is a polyurethane (PUR-COOH-CDI), which contains both carboxyl groups and carbodiimide groups.

7. The use according to claim 3, characterized in that the polyurethane P2, which is located in the aqueous polyurethane dispersion adhesive (DK)is a polyurethane (PUR-COOH-CDI), which contains both carboxyl groups and carbodiimide groups.

8. Use the .5, characterized in that the polyurethane P2, which is located in the aqueous polyurethane dispersion adhesive (DK)is a polyurethane (PUR-COOH-CDI), which contains both carboxyl groups and carbodiimide groups.

9. The use according to claim 1 or 2, characterized in that the aqueous polyurethane dispersion adhesive (DK) contains as polyurethane P2 polyurethane (PUR-COOH), which contains carboxyl groups and optionally at least one carbodiimide (CBI), containing at least one carbodiimide group.

10. The use according to claim 3, characterized in that the aqueous polyurethane dispersion adhesive (DK) contains as polyurethane P2 polyurethane (PUR-COOH), which contains carboxyl groups and optionally at least one carbodiimide (CBI), containing at least one carbodiimide group.

11. The use according to claim 4, characterized in that the aqueous polyurethane dispersion adhesive (DK) contains as polyurethane P2 polyurethane (PUR-COOH), which contains carboxyl groups and optionally at least one carbodiimide (CBI), containing at least one carbodiimide group.

12. The use according to claim 5, characterized in that the aqueous polyurethane dispersion adhesive (DK) contains as polyurethane P2 polyurethane (PUR-COOH), which contains carboxyl groups and, additionally, m is Nisha least one carbodiimide (CBI), containing at least one carbodiimide group.

13. The use according to claim 6, characterized in that the aqueous polyurethane dispersion adhesive (DK) contains as polyurethane P2 polyurethane (PUR-COOH), which contains carboxyl groups and optionally at least one carbodiimide (CBI), containing at least one carbodiimide group.

14. The use according to claim 7, characterized in that the aqueous polyurethane dispersion adhesive (DK) contains as polyurethane P2 polyurethane (PUR-COOH), which contains carboxyl groups and optionally at least one carbodiimide (CBI), containing at least one carbodiimide group.

15. The use according to claim 6, characterized in that the aqueous polyurethane dispersion composition (PD) contains at least one carbodiimide (CBI), containing at least one carbodiimide group.

16. The use according to claim 9, characterized in that the aqueous polyurethane dispersion composition (PD) contains at least one carbodiimide (CBI), containing at least one carbodiimide group.

17. Polymer film with a primer coating obtained by applying and drying one-component aqueous polyurethane dispersion composition (PD)obtained according to any one of claims 1 to 5, 9, on the polymer film (PP), being the m polyurethane dispersion composition (PD) contains, at least one polyurethane P1 with carbodiimide groups and/or carboxyl groups.

18. Polymer film with a primer coating on 17, characterized in that the carbodiimide group is characterized by the formula (I)

19. Composite, including:
- plastic film (PP),
- reacted primer coating (P),
obtained from the one-component aqueous polyurethane dispersion composition (PD)obtained according to any one of items 1 to 5, 15, 16;
- reacted glue (To),
obtained from the one-component aqueous polyurethane dispersion
adhesive (DK), obtained according to any one of claims 1, 6-14; and
the substrate (s),
moreover, unreacted primer coating (P) is located between the polymer film (PP) and reacted with glue (To), and unreacted adhesive (K) is located between the unreacted primer coating (P) and the substrate (S); and the aqueous polyurethane dispersion composition (PD) contains a polyurethane P1, carbodiimide and/or carboxyl groups, and the polyurethane dispersion adhesive (DK) contains a polyurethane P2 with carbodiimide and/or carboxyl groups, so that the carboxyl groups and carbodiimide groups react when heated to a temperature of 50°C or 180°C with each other by means of polyaddition reactions.

20. To which the Deposit account opened in claim 19, characterized in that the composite is manufactured objects and features of the subject for interior decoration, preferably an embedded item in a vehicle or used in the furniture industry.

21. A method of producing a composite according to claim 19 or 20, which includes stages:
(i) applying the aqueous polyurethane dispersion composition (PD) on a polymer film (PP),
(ii) drying polyurethane dispersion composition (PD) with the formation of dried polyurethane dispersion composition (PD'),
(iii) applying the aqueous polyurethane dispersion adhesive (DK) on the substrate (S),
(iv) drying the aqueous polyurethane dispersion adhesive (DK) with the formation of dried polyurethane dispersion adhesive (DK'),
(v) heating the polymer film (PP) with dried her polyurethane dispersion composition (PD'),
(vi) contacting the dried polyurethane dispersion adhesive (DK') with the polyurethane dispersion composition (PD'), dried after
(ii)
and stage (iv) and (v) may be carried out one after the other or simultaneously, and the aqueous polyurethane dispersion composition (PD) and the aqueous polyurethane dispersion adhesive (DK) is chosen as described in the application according to one of claims 1 to 16.

22. The method according to item 21, wherein the phase of the probe p is oshodi when prijemnom effort in particular between 0.1 bar and 1 bar, preferably, at least 0.8 bar.

23. The method according to item 22, wherein the clamping force obtained by applying vacuum in the space between the dried polyurethane dispersion adhesive (DK') and dried polyurethane dispersion composition (PD').

24. The method according to item 21, wherein the dried polyurethane dispersion adhesive (DK') when contacting stage (vi) has a temperature of 50°C or more, in particular a temperature between 50 and 180°C., preferably between 60 and 80°C.

25. The method according to item 21, wherein the dried polyurethane dispersion adhesive (DK') and dried polyurethane dispersion composition (PD') under the influence of temperature chemically react with each other.



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to mechanical fining of shaped articles by films. Adhesive is applied on shaped article surface and film is applied thereto. Shape article represents a window section. Fining of said section is carried out using polyurethane adhesive PVC film, polyacrylate or poly ether. Note here that said section is heated on applying adhesive on its surface, or adhesive is heated on its application on section surface to at least 40°C. Proposed method allows rejecting pre-processing of section to be fined.

EFFECT: minimised lamination of applied film.

7 cl, 1 ex

FIELD: machine building.

SUBSTANCE: invention refers to fixing devices. Here is disclosed the fixing device with a fixing element consisting of a fixing part with a flat external surface and with thermo-fusible glue melted for binding the fixing element with a holder and joined with the flat external surface of the fixing element and with the holder, thus forming a flat glue binding between them; also the fixing element is equipped with a seat opened in the direction of its flat external surface wherein a pressed part is inserted. A retaining fixture is made in the zone of the seat. According to the first version the retaining fixture corresponds to at least part of a side internal wall of the seat, also the side internal wall of the seat has several ribs protruding radially inside and penetrating or pressed into the pressed part. According to the second version the retaining fixture has several fixing lugs projecting over the bottom of the seat. According to the third version the retaining fixture is formed with a fixing rod transferred in axial direction in the seat; while the pressed part has a hole for this fixing rod inserted into it.

EFFECT: ensuring preliminary assembly of fixing device eliminating melting pressed part out of thermo-fusible glue.

4 cl, 6 dwg

FIELD: construction.

SUBSTANCE: device has working plate with deepenings, lower or bottom surfaces of which are created by upper working surfaces of puncheons, which are pointedly displaced by their sides walls in deepenings in working plate. On working plate, aside from deepenings, there is a displaced reservoir that contains powder glue for filling of deepenings in working plate. As reservoir is being displaced, its side edges slide along working plate flush with its surface. On the other side of deepenings there are sleds arranged in working plate, which serve as support for fastening element placed in them and in which through openings are provided for puncheons extended upwards from working plate. Above deepenings in working plate there is a pressing puncheon with pressing plate lowered onto fastening element. At the distance from sleds there is a position of fastening elements heating prior to their placement into position above deepenings in working plate up to temperature required for sticking or melting of thermomelting glue to them.

EFFECT: method and device make it possible to evenly apply thermomelting glue, to glue surfaces of complex shape and to fully automate the process.

4 cl, 14 dwg

FIELD: wood-working industry; methods of production of the glued woodwork.

SUBSTANCE: the invention is pertaining to the method of production of the glued woodwork and the wooden components. The invention presents the method of production of the glued woodwork or the wooden components with usage of the glue systems. At that application of the glue on the heated wooden details or the wooden components is exercised by the separate application of the glue resin and the curing agent (the binding), or the glue system representing the mixture of the glue resin and the curing agent. Before application of the glue on the wooden details or components execute the uniform heating along the whole cross-section of the wooden details or the wooden components by means of the microwave radiation. The invention also presents the description of application of the method for production of the profile of the massive wood. The technical result of the invention is reduction of the time of pressing of the wooden details and the wooden components, the increased efficiency of the production of the glued structural wooden details and the wooden components.

EFFECT: the invention ensures reduction of the time of pressing of the wooden details and the wooden components, the increased efficiency of the production of the glued structural wooden details and the wooden components.

10 cl, 2 dwg

FIELD: wood-working industry; other industries; methods of the surfaces adhesive bonding.

SUBSTANCE: the invention is pertaining to the field of wood-working industry ,in particular, to the method of joining the surfaces including application of the adhesive bonding composition (A) on the surface of the first detail made out of the material, drying of the dissolvent by the evaporation (partial or complete),by the forced drying with production of the gluten composition (B) containing the solid substances of Х mass % directly after the stage of the drying, application of the component (C) containing the dissolvent having the content of the solid substances of Z mass % - on the surface of the second detail made out of the material. At that Z < X, joining the two surfaces together, so that the gluten composition (A) was in the contact with the component (C), pressing the two surfaces to each other. The invention also is pertaining to the method of production of the products on the basis of the wood.

EFFECT: the invention ensures the reliable adhesive bonding of surfaces.

19 cl, 1 tbl, 4 ex

FIELD: adhesives.

SUBSTANCE: objective of invention is to provide a method for joining two bodies with joint exhibiting elevated heat resistance. Proposed method is liable to be optimized and enables faster creation of joint. To that end, between surfaces to be joined, joining material containing at least one crosslinkable polymer or polymerizable and crosslinkable resin is placed. Surfaces to be interconnected and joining material situated between them are juxtaposed and at least one of the bodies is mechanically affected by at frequency 50 to 400 Hz and amplitude 0.5 to 2 mm to heat the assembly, which allows joining material to be converted into thermally set plastic, which imparts enhanced heat resistance to joint.

EFFECT: increased heat resistance of joint.

16 cl, 8 dwg, 1 tbl

FIELD: connection of wood materials by separate application of hardening adhesive composition and gel-containing composition.

SUBSTANCE: proposed method includes several stages: (a) delivery of at least two parts of wood material; (b) separate application of adhesive composition (A) containing hardening resin and composition (B) containing gel-forming agent on surface of at least one or at least two parts; (c) connection of two parts forming stack with (A) and (B) compositions between parts; (d)preliminary molding of stack at temperature below required hardening temperature of thermosetting adhesive composition without hardening of resin; (e) hot molding of stack at temperature above temperature at preliminary molding or above required temperature of hardening of applied thermosetting composition at hardening of resin.

EFFECT: improved cold adhesion.

20 cl, 2 tbl, 2 ex

FIELD: bonding materials on base of wood.

SUBSTANCE: proposed method includes hardening amino resin by means of hardening composition containing acid and phenol resin. Proposed method makes it possible to obtain quickly hardened and waterproof adhesive joint.

EFFECT: possibility of obtaining quickly hardened waterproof joint.

42 cl,, 4 tbl, 4 ex

Release fixed glass // 2176192
The invention relates to release the glass from the support structure or frame in which the glass is fixed

FIELD: construction.

SUBSTANCE: composition contains the following components, wt %: 74.42-83.63 - hydroxyl-containing polybutadiene rubber SKD-GTRA, 1.63-2.11 - 1.4-butanediol, 0.07-0.09 - trimethylolpropane, 4.76-13.04 - transformer oil, 8.90-11.53 - hexamethylenediisocyanate, 0.5-5.0 - technical carbon (over 100%), 0.02-0.03 - dibutyldilaurate of tin (over 100%).

EFFECT: reduced viscosity of strengthening polyurethane composition, its increased pot life, provision of technological process, higher hydrolytic and chemical resistance, provision of hardening temperature within the limits and high physical-mechanical properties.

4 ex, 1 tbl

FIELD: personal use articles.

SUBSTANCE: invention relates to glue layer, to wig, where such layer is used, and also to methods of their production. Glue layer is made of polyurethane contact layer made by mixing of two fluids, the main reagent and hardener, besides the main reagent is high-molecular alcohol, and hardener contains polyisocyanate as the main component. At the same time one side of glue layer is glued to wig base by means of chemical reaction to inner side of wig base in process of reaction of gel-formation of glue solution applied on inner side of wig base, and serves for fixation of hair to stick root part of hair inserted with penetration on inner side of wig base. And other side is glued to head skin by means of pressing and performs function of possible further peeling from scalp.

EFFECT: wig containing base made of soft plastic, hair and single glue layer, is light, reliably stuck to scalp, has low prime cost, and may be used repeatedly due to possibility of further peeling of glue layer.

16 cl, 1 ex, 6 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to undercoating compositions containing at least one polyurethane prepolymer A with isocyanate groups; at least one aliphatic polyisocyanate B; at least one aromatic polyisocyanate C; at least one reaction product D, obtained from at least one epoxysilane and at least one aminosilane with quantitative ratio of atoms of active hydrogen of the amine to the number of epoxy groups of the epoxysilane equal to 3:1-1:3, or at least one epoxysilane and at least one mercaptosilane with quantitative ratio of mercapto groups to epoxy groups equal to 1.5:1-1:1.5, with content of product D equal to 0.5-15 wt % of the total weight of A+B+C+D. The invention also relates to use of the undercoating composition as an undercoating for adhesives, sealants and floor coatings.

EFFECT: good adhesion to problematic substrates with long open time.

24 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a polyurethane adhesive composition which can be used for gluing materials, concrete, leather, wood etc. The composition contains the following in pts. wt: 20-60 moulding polyurethane or wastes from production of moulding polyurethane, 80-40 ε-caprolactam, 5-50 isocyanate and 100-300 organic polar solvent.

EFFECT: composition increases adhesion strength of substrates, has low cost due to use of readily available and cheaper components, as well as reduced pollution of the environment due to recycling of wastes from production of moulding polyurethane.

5 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: said dispersions contain ionic or potentially ionic and nonionic groups. Ionic or potentially ionic groups are entered into a polymer skeleton through a difunctional polyol component whose molecule also contains 0.5-2 moles of sulpho-acid or sulphonate groups, while nonionic groups are entered through one or more compounds which are monofunctional in polyaddition reactions of isocyanates, containing at least 50 wt % ethylene oxide and having molecular weight of at least 400 Da. The dispersions also contain 0.1-7.5 wt % emulsifying agent which is not chemically bonded with the polymer, where the said emulsifying agent is nonionic, liquid at room temperature and has hydrophilic-lipophilic balance ranging from 12 to 18.

EFFECT: proposed aqueous polyurethane dispersions are characterised by low activation temperature, high initial heat resistance, high thermal stability and excellent adhesion to different bases.

3 cl, 4 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a composition which is used in rocket engineering, particularly for attaching solid-propellant charge to the rocket casing. The adhesive composition contains, pts. wt: 9.0 to 14.0 urethane rubber SUREL-9, 1.0 to 2.0 hardener TON-2, 60.0 to 70.0 solvent - ethyl acetate and, additionally, 4.0 to 9.0 nongranular technical carbon and 8.0 to 12.0 dibutyl phthalate. Solid propellant contains an oxidising agent, fuel, synthetic rubber-based binder which his plasticised with nitroglycerin, curing additives and catalysts.

EFFECT: proposed adhesive composition prevents diffusion of plasticiser from fuel contact layers, that way providing for excellent physical and mechanical properties, as well as adhesion properties during prolonged storage.

4 ex, 8 tbl, 1 dwg

FIELD: chemistry.

SUBSTANCE: water dispersion contains polyurethane dispersion and water dispersion of silicon dioxide. Polyurethane dispersion has the average size particle of polyurethane polymer in the range from 60 to 350 nm. The water dispersion of silicon dioxide has SiO2 particles diametre from 20 to 400 nm. Polymer dispersions are used as glues for gluing of any substrates same or different type.

EFFECT: high initial thermal durability of glue joints.

9 cl, 15 ex, 6 tbl

FIELD: textiles; paper.

SUBSTANCE: invention relates to producing water-soluble melt adhesive, which can be widely used in cardboard and paper industry for gluing and laminating cardboard, as well as for making joints of not less than two layers of paper, used for making toilet paper. The water-soluble melt adhesive contains 40-70 wt.% of not less than one homopolymer or copolymer with free carboxylate groups based on monomers with unsaturated ethylene bonds (component A), 15-45 wt % of not less than one water-soluble or polyurethane dispersed in water (component B), 12-35 wt % of not less than one alkanolamine (component C) and 0-20 wt % target additives.

EFFECT: obtained melt adhesives have high viscosity, elasticity and high strength of adhesive bonds on packages at low temperatures during storage of products, and at high temperatures the adhesive does not soften and does not flow.

11 cl, 1 tbl, 3 ex

FIELD: technological processes, chemistry.

SUBSTANCE: invention is related to compositions used for binding of glass or plastic with the help of polyurethane adhesive. Technical task - development of composition that makes system together with polyurethane adhesive for durable connection of glass or plastic with structure. Composition is suggested, which contains a) one or several organic compounds - titanates having four ligands, where ligands represent hydrocarbyl, which may not contain one or several functional groups, having one or several heteroatoms selected from group that includes oxygen, nitrogen, phosphorous and sulfur, where two or more ligands may create cyclic structure; b) one or several mercapto silanes; c) one or several polyaminosilanes; d) one or several secondary aminosilanes and e) dissolvent that dissolves composition components. Also system is suggested for binding of glass with substrate, which includes suggested composition and adhesive comprising isocyanate functional polymer and catalyst for hardening of isocyanate functional prepolymer.

EFFECT: system may be used in automobile industry for window fixation to vehicle.

10 cl, 5 tbl, 24 ex

FIELD: chemistry.

SUBSTANCE: hydropyle blocked polyisocyanates are produced by the method wherein: A) one or the several organic polyisocyanates interact with B) one or several organic compounds, containing, at least, one isocyanate reactive group and comprising b1) non-ionic hydropyle groups based on simple poly-alkylenoxide-polyethers containing at least 30 wt % of ethylene-oxide links, and/or b2) ionic or potentially ionic hydropyle groups a forming dissociation equilibrium depending upon pH in interaction with water, and, depending upon pH not having a charge and being charged positively or negatively, or interact with C) one or several blocking means containing, at least, one cyclic ketone with CH-acidity of the general formula (2) where X is the electron-acceptor group, R1, R2 mean independently from each other the hydrogen atom, saturated or unsaturated aliphatic residual containing up to 12 carbon atoms, n is 1, and, if necessary, interacting with one or several (cyclic)aliphatic mono- or polyamines with the amount of amino groups in a molecule of 1 to 4 and molecular weight of up to 400 note that, if necessary, it interacts with one or several multinuclear spirits with the number of hydroxyl groups in a molecule from 1 to 4 and molecular weight of up to 400, and, if necessary, with amino spirits in the presence D) of one or several catalysts or, if necessary, with auxiliary substances and additives and, if necessary E), with solvents. Polyisocyanates can be used for manufacturing varnishes, coatings, sizes, glues and molded products.

EFFECT: improved method of producing hydropyle blocked polyisocyanates.

6 cl, 6 ex

FIELD: chemistry of polymers.

SUBSTANCE: invention relates to aromatic polyurethane polyols used as components of priming compositions. Invention describes the priming composition comprising aromatic polyurethane polyol including product of reaction: (a) at least one diol component among number of α,β-diols, α,γ-diols and their mixtures; (b) at least one triisocyanate; (c) at least one diisocyanate wherein at least one isocyanate is aromatic one, and molecular mass or aromatic polyurethane polyol is 3000 Da, not above, and a cross-linking agent also. Prepared aromatic polyurethane polyol shows viscosity value by Brookfield at the level 8260 centipoises, OH-number 192.6 KOH/g and the dispersity (Mn/Mw) at the level 3.0. Priming compositions prepared by using indicated aromatic polyurethane polyol are useful in finishing large means of transportation, for example, trains, trucks, buses and airplanes, in particular, in vehicle body works. Also, invention relates methods for applying priming compositions on support comprising applying indicated compositions, and to a method for finishing car in repairs comprising applying the indicated priming composition.

EFFECT: improved and valuable properties of composition.

11 cl, 5 tbl, 12 ex

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