阅读说明：本技术 无苯乙烯且无钴的聚合物组合物及其在填充和粘合中的用途 (Styrene-and cobalt-free polymer composition and use thereof in filling and bonding ) 是由 法比奥·迪西韦斯特里 保罗·莫伦迪 米凯莱·马里涅 科拉多·博纳奇尼 埃莱奥诺拉·里瓦尔塔 于 2018-12-04 设计创作，主要内容包括：一种无苯乙烯且无钴化合物的聚合物组合物及其用于填充和粘合的用途,特别地用于汽车维修、大理石和花岗岩的粘合和修复、建模、模具和模型的制造、复合材料的结构粘合,以及用于航海和风力发电领域。(A styrene-and cobalt-free polymer composition and its use for filling and bonding, in particular for automotive repair, bonding and repair of marble and granite, modelling, manufacture of moulds and models, structural bonding of composite materials, and in the marine and wind power fields.)

1. A styrene-and cobalt-free polymer composition, in particular for filling and bonding, characterized in that it comprises

-a resin selected from the group consisting of: unsaturated polyester resins, urethane acrylate resins, and combinations thereof;

-an acrylate or methacrylate monomer selected from the group consisting of: methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, hydroxyethyl (meth) acrylate, propyl (meth) acrylate, hydroxypropyl (meth) acrylate, benzyl (meth) acrylate, tripropylene glycol di (meth) acrylate, 1, 6-hexanediol (meth) acrylate, dipropylene glycol di (meth) acrylate, pentaerythritol tetraacrylate (PPTTA), trimethylolpropane ethoxy triacrylate (TMPEOTA), propoxylated glycerol triacrylate (GPTA), isobornyl (meth) acrylate, phenoxyethyl (meth) acrylate, hexyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-butoxyethyl (meth) acrylate, ethylhexyl (meth) acrylate, isodecyl (meth) acrylate, allyl (meth), 1, 3-butylene glycol di (meth) acrylate;

-an amine-type polymerization accelerator; and

-talc.

2. The polymer composition according to claim 1, characterized by further comprising one or more additives selected from the group consisting of:

(a) an antioxidant;

(b) a surface additive;

(c) a mineral filler consisting of one or more of barium sulfate, calcium carbonate or kaolin;

(d) a rheology modifier;

(e) from titanium dioxide (TiO)₂) A pigment selected from iron oxide; and

combinations thereof.

3. The polymer composition according to claim 2, characterized by comprising, based on the total weight of the composition:

-10 to 80 wt%, preferably 18 to 25 wt% of dry resin;

-5 to 20 wt%, preferably 7 to 10 wt%, of the acrylate or methacrylate monomer;

-0.1 to 1.5 wt%, preferably 0.1 to 0.5 wt% of said amine-type polymerization accelerator;

-3 to 50% by weight of talc; and

-an amount of said one or more additives to obtain 100% by weight.

4. The polymer composition according to any of claims 1 to 3, characterized in that the resin is an unsaturated polyester resin selected from the group consisting of: DCPD (dicyclopentadiene) type unsaturated polyester resin, tetrahydrophthalic acid type unsaturated polyester resin, phthalic acid type unsaturated polyester resin and unsaturated vinyl ester resin, preferably DCPD type unsaturated polyester resin.

5. The polymer composition according to any of the preceding claims, characterized in that the acrylate or methacrylate monomer is an acrylate monomer selected from the group consisting of: isobutyl acrylate, butyl acrylate, and combinations thereof.

6. Polymer composition according to any one of claims 2 to 5, characterized in that the amine-type polymerization accelerator is selected from the group consisting of: p-toluidine, m-toluidine and derivatives thereof.

7. The polymer composition according to any one of claims 2 to 6, characterized in that it comprises from 0.01 to 1% by weight of the surface additive, based on the total weight of the composition.

8. Polymer composition according to any one of claims 2 to 7, characterized in that the surface additive is a wax.

9. The polymer composition according to any one of claims 2 to 8, characterized in that it comprises from 0.008 to 0.020% by weight of the antioxidant, based on the total weight of the composition.

10. Polymer composition according to any of claims 2 to 9, characterized in that the antioxidant is selected from the group consisting of: 1, 4-naphthoquinone, toluhydroquinone, tetrahydroquinone, p-benzoquinone and combinations thereof, preferably 1, 4-naphthoquinone, toluhydroquinone and p-benzoquinone.

11. The polymer composition according to any one of claims 2 to 10, characterized in that it comprises at most 6% by weight of the rheology modifier, based on the total weight of the composition.

12. Polymer composition according to any of claims 2 to 11, characterized in that the rheology modifier is selected from the group consisting of: castor oil derivative having a surface area of 200m²Silica gel per gram and combinations thereof.

13. The polymer composition according to any one of claims 2 to 13, characterized in that it comprises one or more of the following, based on the total weight of the composition: barium sulfate up to 25% by weight, calcium carbonate up to 40% by weight and kaolin up to 10% by weight.

14. The polymer composition according to claim 2, characterized in that it comprises, based on the total weight of the composition:

-10% to 80% by weight of a DCPD-based unsaturated polyester resin;

-5 to 20 wt% of an acrylate monomer selected from the group consisting of: isobutyl acrylate, butyl acrylate, and combinations thereof;

-0.1 to 0.8% by weight of N, N-bis (2-hydroxyethyl) -p-toluidine;

optionally up to 30 wt% TiO₂；

-0.2 to 8% by weight of yellow iron oxide;

-3 to 50% by weight of talc;

-0.001 to 0.01 wt% of 1, 4-naphthoquinone;

-0.003 to 0.008 wt.% of toluhydroquinone;

-0.004 to 0.007% by weight of p-benzoquinone;

-0.01 to 1% by weight of wax;

-optionally up to 25 wt% barium sulphate;

-optionally up to 40 wt% calcium carbonate;

-optionally up to 10 wt% kaolin; and

-optionally up to 6 wt% of a castor oil derivative.

15. Use of a composition according to any one of claims 1 to 14 for: automobile maintenance; bonding and repairing marble, granite, ceramic, natural and artificial stone; modeling; manufacturing a mould and a model; structural bonding of the composite; and in the fields of navigation and wind power generation.

Technical Field

The present invention relates to a polymer composition, in particular for filling and bonding.

More particularly, the invention relates to a polymer composition free of styrene and free of cobalt-containing compounds, comprising an unsaturated polyester resin or a urethane acrylate resin, and to the use thereof in automotive repair, bonding and repair of marble and granite, modeling, manufacture of moulds and models, structural bonding of composite materials and in the marine field.

Background

It is known to use polyester resins, in particular unsaturated polyester resins, in the filling and bonding field. Polyester resins constitute a highly differentiated and complex family of synthetic resins, which are available from a variety of starting materials. These resins are more or less viscous liquids with a straw yellow color and can be cured by the addition of a catalyst. The toughness, flexibility and rigidity of the glass and carbon fibers can be modified by adding additives and/or reinforcing agents, typically glass and carbon fibers. They are used in the building field to provide pipes, partitions, doors or windows, glass and decorative panels, but also in the marine field, where more than 90% of the yacht hulls are calculated to be made of reinforced polyester resin, and where even warships, such as miners and ships for coastal police are currently manufactured using polyester resin. In the transportation industry, parts of automobiles, buses, trucks, agricultural machinery, caravans, trams are all made of reinforced polyester resins. There are many other applications, from buttons to sledges to electrical insulators and wind turbine components.

Unsaturated polyester resins are typically used in the form of a solution of a solid unsaturated polyester rotated in a solvent monomer (diluent) which is also unsaturated. Starting from the market of unsaturated polyester resins, styrene is used as diluent because of its low cost, wide availability, ease of use, excellent mechanical properties and optimal polymerization kinetics. In recent years, however, some legal systems have imposed restrictions on the emission of styrene due to harmful effects on the environment and health, and for the same reason, the occupational exposure to styrene is strictly controlled.

Accordingly, various alternatives to styrene have been explored to reduce its harmful emissions and limit worker exposure to the material. For example, styrene derivatives having higher molecular weights have been used as reactive diluents to achieve reduced emissions. However, these styrene analogs are volatile compounds and emissions remain significant. It has also been demonstrated that the addition of alkanes to unsaturated polyester resins can reduce emissions by forming a film on the surface of the resin. However, this solution is only suitable for certain applications, while in other applications it is not acceptable, since it leads to a reduction in the interlayer adhesion. In most cases, it has been demonstrated that acrylate and methacrylate type monomers with low volatility are not suitable for replacing styrene in unsaturated polyester resins, since atmospheric oxygen inhibits the polymerization, resulting in a surface that is not completely hardened and has a "sticky" appearance, whose mechanical properties are inferior to those of resins prepared using styrene.

Patent US 7,396,882 describes a styrene-free unsaturated polyester resin composition obtained by copolymerizing a dicyclopentadiene (DCPD) -based unsaturated polyester resin with a urethane (meth) acrylate and two different acrylic monomers acting as reactive diluents (respectively a multifunctional acrylate or methacrylate monomer and a hydroxyl-functionalized acrylate or methacrylate monomer). The polymerization is carried out in the presence of a catalyst, in particular a compound containing cobalt, a metal whose possible toxic effects are known.

Although formulations such as described in US 7,396,882 constitute an improvement over conventional formulations containing styrene, there is still a need to develop improved styrene-free compositions which can further reduce emissions of substances which have been classified or in any case considered to be toxic to health and the environment, while ensuring that the final product has the characteristics obtainable by using styrene as the main reactive diluent.

Disclosure of Invention

It is therefore an object of the present invention to provide a styrene-free polymer composition which has polymerization kinetics similar to that of styrene-containing formulations, has a very low sensitivity to atmospheric oxygen inhibition, has no surface tack on the product to which it is applied, and has a sanding time (sanding times) similar to that of the styrene-containing formulations.

It is another object of the present invention to provide a composition that reduces the emission of styrene into the environment.

It is another object of the present invention to provide a polymer composition which allows the production of articles with reduced linear shrinkage.

The most important object of the present invention is to provide a composition which can be polymerized without using a cobalt-based catalyst.

This aim and these and other objects that will become better apparent hereinafter are achieved by a styrene-and cobalt-free polymer composition, in particular for filling and bonding, characterized in that it comprises:

-a resin selected from the group consisting of unsaturated polyester resins, urethane acrylate resins and combinations thereof;

acrylate or methacrylate monomers selected from methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, hydroxyethyl (meth) acrylate, propyl (meth) acrylate, hydroxypropyl (meth) acrylate, benzyl (meth) acrylate, tripropylene glycol di (meth) acrylate, 1, 6-hexanediol (meth) acrylate, dipropylene glycol di (meth) acrylate, pentaerythritol tetraacrylate (PPTTA), trimethylolpropane ethoxy triacrylate (TMPEOTA), propoxylated glycerol triacrylate (GPTA), isobornyl (meth) acrylate, phenoxyethyl (meth) acrylate, hexyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-butoxyethyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, hydroxyethyl (meth) acrylate, hydroxypropyl methacrylate, Ethylhexyl (meth) acrylate, isodecyl (meth) acrylate, 1, 3-butanediol di (meth) acrylate;

-an amine-type polymerization accelerator; and

-talc.

The objects and aims of the invention are also achieved by the use of the composition according to the invention for automotive repair, bonding and repair of marble, granite, ceramic, natural and artificial stone, modelling, manufacture of moulds and models, structural bonding of composite materials and use in the field of nautics and wind power generation.

Other features and advantages of the present invention will become more apparent from the following detailed description.

Detailed Description

The invention relates to an adhesive polymer composition which is free of cobalt compounds, in particular for filling and bonding, is based on unsaturated polyester resins and/or on urethane acrylate resins and which uses acrylate or methacrylate monomers as solvent monomers instead of styrene.

According to the present invention, the styrene-and cobalt-free polymer composition comprises, preferably essentially consists of, more preferably consists of, as defined above: a resin, an acrylate or methacrylate monomer, a polymerization accelerator, talc and optionally one or more additives.

In the polymer composition according to the present invention, the first component is composed of a resin selected from unsaturated polyester resins, urethane acrylate resins, and combinations thereof.

Preferably, the resin of the polymer composition according to the invention is an unsaturated polyester resin selected from the group consisting of DCPD (dicyclopentadiene) based unsaturated polyester resins, tetrahydrophthalic unsaturated polyester resins, phthalic unsaturated polyester resins and unsaturated vinyl ester resins.

More preferably, the resin is a DCPD-based unsaturated polyester resin.

In a preferred embodiment, the polymer composition according to the invention comprises 10 to 80%, more preferably 18 to 25% by weight of resin, based on the total weight of the composition.

The second component of the polymer composition according to the invention is constituted by an acrylate or methacrylate monomer. Within the scope of the present invention, the term "(meth) acrylate" is understood to mean both acrylic monomers and the corresponding methacrylic monomers.

In particular, in the polymer composition according to the invention, the acrylate or methacrylate monomer is selected from the group consisting of methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, hydroxyethyl (meth) acrylate, propyl (meth) acrylate, hydroxypropyl (meth) acrylate, benzyl (meth) acrylate, tripropylene glycol di (meth) acrylate, 1, 6-hexanediol (meth) acrylate, dipropylene glycol di (meth) acrylate, pentaerythritol tetraacrylate (PPTTA), trimethylolpropane ethoxy triacrylate (TMPEOTA), propoxylated glycerol triacrylate (GPTA), isobornyl (meth) acrylate, phenoxyethyl (meth) acrylate, hexyl (meth) acrylate, cyclohexyl (meth) acrylate, and mixtures thereof, 2-butoxyethyl (meth) acrylate, ethylhexyl (meth) acrylate, isodecyl (meth) acrylate, 1, 3-butanediol di (meth) acrylate.

In a more preferred embodiment of the polymer composition according to the invention, the acrylate or methacrylate monomer is selected from isobutyl acrylate, butyl acrylate and combinations thereof.

Preferably, the polymer composition according to the invention comprises acrylate or methacrylate monomers in an amount of from 5 to 20%, more preferably from 7 to 10% by weight, based on the total weight of the composition.

In fact, the inventors of the present invention have found that the use of the above-mentioned acrylate or methacrylate monomers, in particular the acrylate monomer selected from isobutyl acrylate, butyl acrylate and combinations thereof, has technical advantages such as high solvency for resins based on unsaturated polyester and/or urethane acrylates, polymerization kinetics comparable to styrene and extremely low sensitivity to inhibition by atmospheric oxygen.

Further advantages of the present invention are the absence of surface tack, excellent hardening and optimum adhesion to steel, galvanized sheet metal, aluminum, wood, ceramic, marble, granite and natural and artificial stone in high and low thickness applications, with a sanding time similar to that of styrene-containing formulations. In addition, by virtue of the high reactivity of the acrylate or methacrylate monomers present in the polymer composition according to the invention, the emission of said monomers into the environment is reduced. Of particular importance is the reduction of linear shrinkage and limited exothermic reaction peaks.

The polymer composition according to the invention further comprises an amine-type compound acting as a polymerization accelerator (accelerator).

In a preferred embodiment, the amine-type polymerization accelerator is selected from the group consisting of p-toluidine, m-toluidine and derivatives thereof. Among the derivatives of p-toluidine and m-toluidine which act as accelerators, mention may be made, for example, of N-monoalkyl-and N, N-dialkyl-substituted derivatives, such as, for example, N-dimethyl-p-toluidine, N-diisopropanol-p-toluidine, N- (2-hydroxyethyl) -N-methyl-p-toluidine, N-bis (2-hydroxyethyl) -p-toluidine, N-ethyl-m-toluidine and N, N-dimethyl-m-toluidine.

Preferably, in the polymer composition according to the invention, the polymerization accelerator is selected from the group consisting of N, N-bis (2-hydroxyethyl) -p-toluidine, p-toluidine and m-toluidine, more preferably the polymerization accelerator is N, N-bis (2-hydroxyethyl) -p-toluidine.

In a preferred embodiment, the polymer composition according to the invention comprises from 0.1 to 1.5%, preferably from 0.1 to 0.5% by weight of said amine-type polymerization accelerator, based on the total weight of the composition.

The composition according to the invention also comprises talc as mineral filler, preferably in an amount of from 3 to 50%, more preferably from 30 to 40%, even more preferably 35% by weight, based on the total weight of the composition. When the composition is used for filling and bonding of articles, the presence of talc aids in the sanding operation and helps to improve the surface appearance of the sanded article.

The composition according to the invention may further comprise one or more additives, preferably in a total amount sufficient to reach 100% (q.s.100%) by weight, based on the total weight of the composition, wherein said one or more additives are selected from:

(a) an antioxidant;

(b) a surface additive;

(c) a mineral filler consisting of one or more of barium sulfate, calcium carbonate or kaolin;

(d) a rheology modifier; and

(e) selected from titanium dioxide (TiO)₂) Iron oxide, and combinations thereof.

The polymer composition according to the invention may comprise antioxidants in an amount of 0.001 to 0.02%, more preferably 0.008 to 0.02% by weight based on the total weight of the composition.

Preferably, in the polymer composition according to the present invention, the antioxidant is selected from the group consisting of 1, 4-naphthoquinone, toluhydroquinone, tetrahydroquinone, p-benzoquinone and combinations thereof. Preferably, the antioxidant consists of a combination of 1, 4-naphthoquinone, p-benzoquinone and toluhydroquinone, even more preferably a combination wherein the amount of 1, 4-naphthoquinone is 0.001 to 0.01% by weight based on the total weight of the composition, the amount of toluhydroquinone is 0.003 to 0.008% by weight based on the total weight of the composition, and the amount of p-benzoquinone is 0.004 to 0.007% by weight based on the total weight of the composition.

Surface additives may be added to the polymer composition according to the invention which reduce the inhibition of polymerization by oxygen by creating a protective film on the surface of the product to which the composition of the invention is applied.

In a preferred embodiment, the polymer composition according to the invention comprises the surface additive in an amount of 0.01 to 1%, more preferably 0.1 to 0.6%, even more preferably 0.4% by weight, based on the total weight of the composition.

Preferably, the surface additive is a wax, such as for example a paraffin having a Melting Point (MP) of 40-65 ℃.

In addition to talc, the polymer composition according to the invention may also comprise one or more other mineral fillers selected from barium sulfate, calcium carbonate and kaolin.

Preferably, the polymer composition according to the invention comprises one or more of the following, each by weight based on the total weight of the composition:

barium sulphate in an amount of up to 25%, preferably 14-16%, even more preferably 15%;

calcium carbonate in an amount of up to 40%, preferably 10 to 16%, even more preferably 12.5%; and

kaolin in an amount of up to 10%, preferably 3 to 6%, even more preferably 4%.

The polymer composition according to the invention may further comprise a rheology modifier in an amount of up to 6% by weight, more preferably from 0.3 to 1.5% by weight, even more preferably 0.7% by weight, based on the total weight of the composition.

Preferably, the rheology modifier is a derivative of castor oil, such as hydrogenated castor oil (preferably in an amount equal to 0.8% by weight), having a surface area of 200m²Silica gel/g (preferred amount equals 0.5 wt%), or a combination of 0.4 wt% of a castor oil derivative and 0.8 wt% of silica gel.

In addition, the polymer composition according to the invention may comprise titanium dioxide (TiO)₂) One or more iron oxides (red, yellow and black) and combinations thereof.

In a preferred embodiment, the polymer composition according to the invention comprises at most 38% by weight of said pigment, based on the total weight of the composition.

Preferably, the titanium dioxide is present in an amount of up to 30% by weight, more preferably 3 to 6%, even more preferably 5%, based on the total weight of the composition.

Preferably, the iron oxide (yellow and/or red and/or black) is present in an amount of up to 8 wt. -%, more preferably of from 0.2 to 8%, even more preferably of from 0.2 to 0.3%, based on the total weight of the composition.

Preferably, the pigment comprises iron oxide yellow, red and/or black, but it will be appreciated that other pigments commonly used with unsaturated polyester resins may also be used in the compositions of the present invention in place of iron oxide yellow, red and/or black.

Of course, in addition to the above-mentioned components and additives, the polymer composition of the present invention may further comprise other additives conventionally used in providing unsaturated polyester resins, such as, for example, thixotropic agents, UV absorbers, plasticizers, flame retardants, water repellents and reinforcing agents (as reinforcing agents, fibers added with glass, carbon, cellulose, aramid for reducing the relative density, glass or plastic microspheres may be used). The polymer composition of the present invention may further comprise glycols of various molecular weights to modify viscosity, resists and silane type adhesion promoters.

The free-radical polymerization of the composition according to the invention starts with the mixing of the formulation with a catalyst, preferably 50% benzoyl peroxide in the form of a paste, preferably in an amount of 1 to 3% by weight relative to the formulation, and in any case a cobalt-free catalyst. The polymerization was initiated at room temperature.

In a preferred embodiment, the polymer composition according to the invention comprises, more preferably consists essentially of, even more preferably consists of, based on the total weight of the composition:

-10-80 wt%, preferably 18-25 wt% of dry resin;

-5-20 wt%, preferably 7-10 wt%, of an acrylate or methacrylate monomer;

-0.1-1.5 wt%, preferably 0.1-0.5 wt% of an amine-type polymerization accelerator;

-3-50% by weight of talc; and

-an amount of one or more additives (a), (b), (c), (d) or (e) to 100% by weight.

In a more preferred embodiment, the polymer composition according to the invention comprises, more preferably consists essentially of, even more preferably consists of, based on the total weight of the composition:

-10-80% of a resin selected from the group consisting of: DCPD unsaturated polyester resin, tetrahydrophthalic unsaturated polyester resin, phthalic unsaturated polyester resin, unsaturated vinyl ester resin and carbamate acrylate resin;

-5-20 wt% of an acrylate or methacrylate monomer selected from the group consisting of: methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, hydroxyethyl (meth) acrylate, propyl (meth) acrylate, hydroxypropyl (meth) acrylate, benzyl (meth) acrylate, tripropylene glycol di (meth) acrylate, 1, 6-hexanediol (meth) acrylate, dipropylene glycol di (meth) acrylate, pentaerythritol tetraacrylate (PPTTA), trimethylolpropane ethoxy triacrylate (TMPEOTA), propoxylated glycerol triacrylate (GPTA), isobornyl (meth) acrylate, phenoxyethyl (meth) acrylate, hexyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-butoxyethyl (meth) acrylate, ethylhexyl (meth) acrylate, isodecyl (meth) acrylate, allyl (meth), 1, 3-butylene glycol di (meth) acrylate;

-0.1-0.8% by weight of N, N-bis (2-hydroxyethyl) -p-toluidine;

optionally up to 30 wt% TiO₂；

-0.2-8% by weight of iron oxide yellow, red and/or black;

-3-50% by weight of talc;

-0.001-0.01% by weight of 1, 4-naphthoquinone;

-0.003-0.008% by weight of toluhydroquinone;

-0.004-0.007% by weight of p-benzoquinone;

-0.01 to 1% by weight of wax;

-optionally up to 25 wt% barium sulphate;

-optionally up to 40 wt% calcium carbonate;

-optionally up to 10 wt% kaolin; and

-optionally up to 6 wt% of a castor oil derivative.

In an even more preferred embodiment, the polymer composition according to the invention comprises, more preferably consists essentially of, even more preferably consists of, based on the total weight of the composition:

-10% to 80% by weight of a DCPD-based unsaturated polyester resin;

-6-15% by weight of an acrylate monomer selected from isobutyl acrylate, butyl acrylate and combinations thereof;

-0.1-0.8% by weight of N, N-bis (2-hydroxyethyl) -p-toluidine;

optionally up to 30 wt% TiO₂；

-0.2-8% by weight of yellow iron oxide;

-3-50% by weight of talc;

-0.001-0.01% by weight of 1, 4-naphthoquinone;

-0.003-0.008% by weight of toluhydroquinone;

-0.004-0.007% by weight of p-benzoquinone;

-0.01-1 wt% of a wax;

-optionally up to 25 wt% barium sulphate;

-optionally up to 40 wt% calcium carbonate;

-optionally up to 10 wt% kaolin; and

-optionally up to 6 wt% of a castor oil derivative.

In another aspect, the invention relates to the use of a polymer composition according to any one of the above embodiments for filling and bonding, in particular in the fields of automotive repair, bonding and repairing of marble and granite, modelling, manufacture of moulds and models, structural bonding of composite materials, and marine and wind power generation.

Within this aim, the present invention also relates to a method for filling and bonding articles by applying to said articles a polymer composition according to any of the embodiments described herein. For example, the article may be a part of an automobile body, an article made of marble, granite, ceramic, natural and artificial stone, a component of a model, an element made of composite material or a part of a ship.

The invention will now be described with reference to the following non-limiting examples.