DE102005056794A1 - Binding agent, useful for the preparation of mineral wool, preferably formaldehyde free bound mineral wool product, comprises an aqueous dispersion of at least a polymer polycarboxylic acid, an amine compound and an active silane - Google Patents

Abstract

Binding agent for mineral wool comprises an aqueous dispersion of at least a polymer polycarboxylic acid; at least an amine compound (I) and an active silane obtained by reacting silane with an enolic 3-12C-ketone with carbonyl or hydroxy group. Binding agent for mineral wool comprises an aqueous dispersion of at least a polymer polycarboxylic acid; at least an amine compound of formula (I) with a molecular weight of not over 20000 g/mol; and an active silane, which is obtained by reacting silane (such as mono-, di- and tri- 1-8C-alkoxysilane with at least 2-10C-aminoalkyl or 2-10C-N-aminoalkyl group, 3-(2-aminoethylamino)propyl trimethoxysilane, bis-(3-trimethoxysilanyl-propyl)-amine, 3-aminopropylsilane triol, aminosilane with ethoxylated nonylphenolate and/or N-benzyl-N'-(3-trimethoxysilyl-propyl)-propane-1,3-diamine hydrochloride), with an enolic 3-12C-ketone with carbonyl or hydroxy group. (R2)(R3)N-(CH2)n-O-R1 (I) R1 : H or -(CH2)n-N(R3)(R2); R2, R3 : H, -(CH2)n-N(R3)(R2) or -((CH2)n-O-)m-R1; n : 2-10; and m : 1-50. Independent claims are included for: (1) a composition comprising the binding agent; (2) a method for the preparation of a formaldehyde free bounded mineral wool with the binding agent, comprising applying the binding agent on the hot fibers of the defibered mineral melt and hardening the bounded mineral wool product; and (3) a bounded mineral wool product, obtained by the process.

Description

The The present invention relates to an activated silane binder according to the claim 1 and a method for producing bonded mineral wool according to claim 14th

In the production of bonded mineral wool products from a glass or mineral melt, it has long been proven, after the fraying of the melt to apply a binder phenol-formaldehyde resin-based on the still hot fibers. This is preferably done in the chute following the defibration, for example, according to the Düsenblasverfahren according to the DE 35 09 426 A1 ,

in this connection is a phenol-formaldehyde resin as the best known binder of the Prior art preferably on the fibers as an aqueous solution, or Dispersion, sprayed, the phenol-formaldehyde resin is then due to still relatively polymerize high temperatures of the fibers on the fiber surface begins and by the polymerization process the individual fibers, especially at intersections of fibers, interconnects, because the fibers that lie on top of each other at a crossing point pass through there solidified resin droplets more or less embedded and thus the displaceability the individual fibers is initially hindered each other and later at Harden by means of hot gases, For example, in a tunnel oven, substantially completely prevented becomes.

Such a binder is used for example in the US 3,231,349 described. For reasons of environmental protection and occupational safety reasons, more and more attempts are now being made to replace the conventional phenolic resin binders with alternative, formaldehyde-free binders, due to their formaldehyde content and their formaldehyde emission.

For example, describes the EP 0 583 086 B2 a curable, formaldehyde-free aqueous binder composition for glass fibers based on polymeric polyacids having at least two carboxylic acid groups or anhydride groups comprising a polyol having at least two hydroxyl groups and a phosphorus-containing catalyst, wherein an equivalent ratio of COOH group to OH group is 0: 0.01 to 1: 3 must exist.

As a polymeric polyacid is in the EP 0 583 086 B2 For example, polyacrylic acid described.

When Polyol is preferably a β-hydroxyalkylamide, for example, [N, N-di (β-hydroxyethyl)] adipamide, used, however, you can for example, ethylene glycol, glycerol, pentaerythritol, trimethylolpropane, Sorbitol, sucrose, glucose, resorcinol, catechol, pyrogallol, glycosylated Ureas, 1,4-cyclohexanediol, Diethanolamine or triethanolamine can be used.

Similar binder compositions for mineral fibers, for example, from the US 6,331,350 B1 . EP 0 990 727 A1 . EP 0 990 728 A1 and EP 0 990 729 A1 known. The enumerated documents of the prior art also employ a polyacrylic acid as the polymeric polyacid. The polyol used there are also alkanolamines and glycols.

In addition, the describes EP 0 882 074 B1 Binder compositions for mineral fibers based on polyacrylic acids and glycols as polyols.

The EP 1 232 211 B1 describes binder compositions for the production of moldings from natural or synthetic finely divided or fibrous materials with a polymer of 0 to 50 wt .-% of at least one ethylenically unsaturated dicarboxylic acid, its anhydrides and / or salts thereof and 50-100 wt .-% of at least one ethylenically unsaturated Monocarboxylic acid and / or salts thereof, wherein up to 10% by weight of the acidic ethylenically unsaturated monomers may be replaced by other ethylenically unsaturated monomers which are copolymerizable with the acidic ethylenically unsaturated monomers and at least one amine which may contain less than two OH groups, in an amount such that the pH of the binder ranges from 2 to 7, and 0.5 to 30% by weight of an epoxy or acrylate resin based crosslinking agent.

• (a) eine Polysäurekomponente mit Säuregruppen oder einem Anhydrid oder Salz davon, und
• (b) eine Polyhydroxykomponente mit Hydroxylgruppen, wobei der pH-Wert der Bindemittelzusammensetzung oberhalb von etwa 7 liegt.

A further prior art is WO 2005/087837 A1, which discloses a formaldehyde-free binder for mineral fibers, which has the following composition:

• (a) a polyacid component having acid groups or an anhydride or salt thereof, and
• (b) a polyhydroxy component having hydroxyl groups wherein the pH of the binder composition is above about 7.

Under The term "polyacid component" is described in WO 2005/087837 an unsaturated, saturated, or aromatic polycarboxylic acid, unsaturated or saturated cyclic polycarboxylic acid, hydroxy-substituted derivatives thereof, as well as their salts and anhydrides Understood.

With The term "polyacid component" is described in WO 2005/087837 Thus, only a low molecular weight acid, which is a plurality of carboxyl groups wearing, and no polymeric polyacid disclosed. In particular, as suitable polyacids, maleic acid, fumaric acid, succinic acid, citric acid, sebacic acid, adipic acid, aconitic acid, butanetetracarboxylic acid dihydride, butanetricarboxylic, citraconic, Dicyclopentadiene Maleinsäureaddukte, diethylenetriaminepentaacetic Adducts of diterpene and maleic acid, Endomethylenhexachlorphtalsäure, ethylenediaminetetraacetic (EDTA), fully maleated rosin, maleated tall oil fatty acids, fumaric acid, glutaric acid, isophthalic acid, itaconic acid and called halogenated derivatives of low molecular weight carboxylic acids.

When Polyols can For example, polyvinyl acetate-type polymeric polyols can be used.

All to phenol-formaldehyde resins alternative binder compositions However, the state of the art is currently mainly because of their lack of water resistance only conditionally for the production of mineral wool products suitable, so that, for example, based on polyacrylate resins Binders the practical use for the production of mineral wool products usually denied.

Starting from the prior art of EP 0 882 074 B1 It was therefore an object of the present invention to provide a formaldehyde-free binder composition having after curing comparable properties of a phenol-formaldehyde binder, but without exhibiting its emission problems.

The solution This object is achieved by a binder and a composition according to claim 1 or claim 2.

One Process for the production of formaldehyde-free bonded mineral wool according to claim 14 with products according to claim 16 and their use according to claim 17 solve the task as well.

• – eine wässrige Dispersion wenigstens einer polymeren Polycarbonsäure;
• – wenigstens eine Amin-Verbindung mit der allgemeinen Formel (1)
  
  worin R1, R2 und R3 unabhängig voneinander gleich oder ungleich H und R1 der allgemeinen Formel (2) entspricht:
  
  mit einem Wert für n von 2-10 und R2 und R3 unabhängig voneinander gleich oder ungleich H sind oder der allgemeinen Formel (3) entsprechen:
  
• – , wobei m einen Wert von 1-50 annehmen kann und die Molekularmasse der Amin-Verbindung ungefähr 20 000 g/mol nicht übersteigt;
• – wenigstens ein aktiviertes Silan,
• • welches erhältlich ist durch eine Umsetzung eines Silans, ausgewählt aus der Gruppe: Mono-, Di-, und Trialkoxysilanen mit einer C₁ bis C₈ – Alkoxygruppe, wobei das Alkoxysilan wenigstens eine C₂ bis C₁₀ – Aminoalkylgruppe oder eine C₂ bis C₁₀ – N-aminoalkylgruppe trägt; 3(2-Aminoethylamino)propyl-trimethoxysilan; (MeO)₃-Si-(CH₂)₃-NH-(CH₂)₃-Si-(OMe)₃; 3-Aminopropylsilantriol; Aminosilan mit ethoxyliertem Nonylphenolat; Phenyl-CH₂-NH-(CH₂)₃-NH-(CH₂)₃-Si-(OMe)₃*HCl; sowie deren Mischungen; mit
• • einem enolisierbaren Keton mit wenigstens einer Carbonylgruppe oder einem Keton mit wenigstens einer OH-Gruppe, wobei das Keton 3 bis 12 C-Atome enthält.

In particular, the present invention relates to a binder and a composition comprising:

• An aqueous dispersion of at least one polymeric polycarboxylic acid;
• At least one amine compound having the general formula (1)
  
  in which R1, R2 and R3, independently of one another, are identical or different from H and R1 of the general formula (2):
  
  with a value for n of 2-10 and R2 and R3 independently of one another are identical or different from H or correspond to the general formula (3):
  
• Wherein m can be 1-50 and the molecular weight of the amine compound does not exceed about 20,000 g / mol;
• At least one activated silane,
• Which is obtainable by reacting a silane selected from the group consisting of mono-, di- and trialkoxysilanes having a C ₁ to C ₈ -alkoxy group, where the alkoxysilane has at least one C ₂ to C ₁₀ Aminoalkyl group or a C ₂ to C ₁₀ N-aminoalkyl group; 3 (2-aminoethylamino) propyl trimethoxysilane; (MeO) ₃ -Si (CH ₂ ) ₃ -NH- (CH ₂ ) ₃ -Si- (OMe) ₃ ; 3-aminopropyl-silane triol; Aminosilane with ethoxylated nonylphenolate; Phenyl-CH ₂ -NH- (CH ₂ ) ₃ -NH- (CH ₂ ) ₃ -Si- (OMe) ₃ * HCl; as well as their mixtures; With
• An enolizable ketone having at least one carbonyl group or a ketone having at least one OH group, wherein the ketone contains 3 to 12 carbon atoms.

It is also a preferred embodiment of the present invention that end-capped the polymeric polycarboxylic acid is. That reactive groups are provided with a suitable capping agent inactivated.

For the use It is used as a binder in the production of mineral wool great Advantage that the composition in the usual dilutions between 5-50% a processing time, in particular pot life, of about 6 h-48 h.

It is a preferred embodiment of the present invention, the alkanolamine from the group: ethanolamine, Diethanolamine, and select triethanolamine.

One preferred silane of the composition of the invention is 3-aminopropyltriethoxysilane. It is commercially low priced available.

When Ketones for the preparation of the activated silane are dihydroxyacetone or acetylacetone are preferred for their ready availability, however The silane can also be activated with an enolisable ketone at least one carbonyl group or a ketone with at least an OH group wherein the ketone contains 3 to 12 carbon atoms become.

The Composition according to the invention can of course additionally at least one surface modifier, in particular a hydroxyphenol, preferably resorcinol, preferably in an amount of between about 0.1 and 1% by mass, based on total solids, contain.

Further it is often desirable that the composition in addition contains at least one crosslinker, preferred are those selected from the group consisting of: glycerol, polyols, neopentyl glycol, 1,3,5-triallyl-2-methoxybenzene, 1,1,1-tris (4-hydroxyphenyl) ethane, Triallyl neopentyl ether, pentaerythritol, sugars, sugar molasses; such as their mixtures.

It it is particularly preferred that the composition according to the invention has a pH in the range of about 5.5 to 9.5. This is on the one hand guaranteed that pipes and nozzles, in particular spray nozzles, less susceptible to corrosion than the acidic binder compositions of State of the art. On the other hand, compositions in the preferred pH range by far the mineral or glass fiber does not look like the significantly more acidic compositions of the prior art.

The Composition according to the invention is ideal as a binder for mineral wool. For one thing, so absolutely formaldehyde-free mineral wool products are produced and on the other hand are the binders of the invention and thus of course the mineral wool products after hardening waterproof.

to Production of formaldehyde-free bonded mineral wool with the inventive binder bring the binder after the defibration of a Mineral melt on the still hot fibers and sets the treated with the binder mineral wool product a curing process out. In this case, the binder is in particular by spraying the from the mineral melt drawn fibers in the chute on the Applied fibers.

One according to the inventive method produced bound mineral wool product meets all mechanical and chemical Requirements such as a bound using classical phenol-formaldehyde resin Mineral wool product.

Without being bound to it, activation of the silane with the carbonyl compound seems possible to proceed according to the following reaction scheme, shown with two different carbonyl compounds:

By activation of silane - im The reaction scheme above is exemplified by the hydrolysis of 3-aminopropyltriethoxysilane emerged γ-aminopropylsilane triol - by Reaction with an enolisable ketone with at least one carbonyl group or a ketone having at least one OH group, wherein the ketone Contains 3 to 12 C atoms, arises at the activated molecule a "plastic side", which by the N part formed will be added to a glass side formed by the Si part.

in the The prior art has been the amino group of the silane with formaldehyde to a ship's Base reacted, which in turn reacted with the phenol-formaldehyde resin.

Consequently is a necessary in the art formaldehyde content of the binder no longer necessary because the activated silane carries an N-containing moiety, the to the plastic - according to the invention to the Reaction product of the polyacrylate with the amine compound, in particular Alkanolamine, but also to the ring activated aromatic systems under execution a C-alkylation - couple can, which is so over the silane linker is bound to the glass surface of the hot fiber.

The reactions of the activated silanes used according to the invention on the glass surface - represented here by a silicic acid tetrahedron - are shown below schematically and by way of example without being bound thereto:

These hydrolytic linkages run on the still hot Fiber off quickly.

Further advantages and features of the present invention will become apparent from the description of exemplary embodiments and with reference to the drawing.

It shows:

1 : A schematic view of silane coupled via the Si portion of an activated silane to a glass fiber; and

2 FIG. 3: a schematic view of a plastic bound to a glass surface on a fiber via an activated silane. FIG.

3 : Dimensions of a test specimen for the determination of ring tensile strength

The overall context of the composition and binder according to the invention in connection with the production of mineral or glass fibers is again illustrative in 1 and 2 shown.

In this case, the illustrated molecular arrangement may only be regarded as a scheme. Of course, for example, with crosslinkers and the alkanolamine still occur within the plastic, in the case of polyacrylate, crosslinking reactions. Of course, it is also possible that unintended side reactions - as with any polymerization - may occur. Therefore one can see the content of 1 and 2 merely as a model, but helpful in understanding the invention.

embodiments

The neutralized resins were tested according to various test methods Laboratory and tested on the finished product. The results were with those of the standard phenolic resin and with a commercial, polyacrylate-based acidic binder compared. The procedure is the following Examples and presents only a small selection of test results The in the cited Examples of substances used are representative only of their functionality, so the dihydroxyacetone used can be easily z. By acetone, Acetylacetone or acetoacetic acid, the ethanolamine by another primary alkanolamine or the mixture on Hydroxymethylresorcinen almost arbitrarily by hydroxymethylated phenols be replaced. The polyols used or the silane are extraordinarily variable.

Generally In the case of binders, the target concentration was 40% total solids sought. The pH values of the neutralized polyacrylates are between 8.1 and 8.4, the pH of commercial polyacrylate based binder is 2.5-3.0.

Comparative Examples

Binder 1 - Standard Comparative Example: A typical alkali-catalyzed phenolic resin according to the prior art having a total solids content of 44% was used.
Composition: 150 kg phenolic resin; 35.5 kg of urea; 1.0 kg of ammonium sulfate; 2.0 kg of ammonia solution (25%); 25.8 kg of 3-aminopropyltriethoxysilane (2%); 44.6 kg of water

binder 2 - acrylate 1: A commercially available one was used Polyacrylate based binder having a total solids content of 52% and a pH between 2.5 and 3.0. 150 kg of this binder were charged with 46.0 kg of water and 0.4 kg of 3-aminopropyltriethoxysilane added.

In the following exemplary embodiments of the invention, the following general rule for the representation of an activated silane applies:
In a vessel with a mechanical stirrer of suitable size, a portion of the dilution water is presented. Subsequently, the appropriate amount of the carbonyl compound is added and stirred until complete dissolution. In the case of poorly water-soluble compounds, warmed up carefully or, with vigorous stirring, a dispersing assistant is added. To the solution, the silane is added and then stirred until clear discoloration of the solution. The color well indicates the formation of imine as activated silane. The thus activated silane is added to the binder mixture. After homogenization, the binder is ready for use and processable for Examples 1 and 2 for about 6 h.

example 1

Binder 3 - Acrylate 2: A commercially available unneutralized polyacrylate-maleic acid copolymer with a total solids of 46% was used.
Composition: 150 kg copolymer; 60.3 kg of ethanolamine; 0.9 kg hydroxymethylresorcinols; 0.4 kg of 3-aminopropyltriethoxysilane; 0.3 kg of dihydroxyacetone; 9.2 kg pentaerythritol; 6.7 kg glycerine, 140.0 kg water

The finished preparation has a pH of about 8.2.

Example 2

Binder 4 - Acrylate 3: A commercially available unneutralized polyacrylate with a total solids of 50% was used.
Composition: 150 kg polyacrylate; 45.3 kg of ethanolamine; 1.0 kg hydroxymethylresorcinols; 0.4 kg of 3-aminopropyltriethoxysilane; 0.3 kg of dihydroxyacetone; 8.5 kg pentaerythritol; 6.2 kg of glycerol; 129.0 kg of water

The finished preparation has a pH of about 8.2.

Performance of quality checks

1. Laboratory tests

1.1 Adhesion of the binder on the glass

Circular shards with a diameter of 7 cm or an area of 38.5 cm ^{2 were used} . The area was determined by counting using a grid template. The values were rounded.

• * Film teilweise aufgelöst

On a circular piece of fire-polished glass of a composition according to EP 1522532A1 5 drops of a 20% binder solution are evenly distributed. The film is first dried to prevent inhomogeneities at 50 ° C and then cured at 150 ° C for 2h. The coated fragments are stored in water at 70 ° C for 24 h. Subsequently, the area fraction of the detached plastic is determined. A technically useful binder should adhere to at least 75% of the surface after the test on the glass. The results are summarized in Table 1. Table 1: Adhesion of the binder to glass

• * Movie partially resolved

2. Tests with mineral wool products, which with the binder according to the invention were manufactured

With the above binders according to the examples 1 to 2 mineral wool products were produced, the binder in usual Way following the defibration of the melt, for example the nozzle blowing method, in the chute on the still hot Fibers sprayed on has been.

The received products were then subjected to a series of tests, which are described below.

2.1 Ring tear strength of insulating materials before and after autoclaving

Ring tensile strengths before and after autoclaving

A clamping felt with a nominal density of 11 kg / m ³ and a target annealing loss of 4.5% was investigated. Changes in the hardening temperatures or hardening times were not made compared to the standard phenolic resin.

method

Out The finished product becomes tubular, oval sample body punched out. The half the sample thus obtained will be with one for that torn to a suitable facility. The other part will be 15 minutes at 105 ° C in saturated with water vapor Air aged and then torn. The measured tear forces make a statement about the strength of the overall system glass fibers - plastic after manufacture and their consistency under normal conditions of use. The test method usually becomes for insulation materials low density, preferably in Klemmfilzen used. at Standard products without water repellents are strength losses by autoclaving between 20 and 30 percent normal. The results are summarized in Table 2. It should be noted that the Comparative non-neutralized polyacrylate (binder 2) even after the production does not have the strengths of others Binder achieved after aging.

Table 2: Ring tear strength

The Binder 2, 3, 4 were used in this experiment without dust binder oil, since the behavior of the pure binder - glass system are investigated should.

The ring tensile strength of insulating materials is tested in detail by the applicant as follows:
The test method is used to determine the maximum breaking strength of oval mineral wool rings. The force required to reach the tearing of the specimen, which is given in N / g as breaking strength, is determined.

As a test specimen oval mineral wool rings are used after an in 3 form shown, which are punched out with a punch with appropriate tool. These rings are punched out of mineral wool products (plates, felts, etc.). It is important to ensure that the specimens are punched over the entire width and not tilted.

Liner should be removed. Specimens are stored at (23 ± 5) ° C and (50 ± 5)% relative humidity for at least 24 h prior to testing. Before the test, the weight in g is for each test piece to be determined with an accuracy of 0.01 g. The specimens are stressed at a test speed of 300 mm / min by pulling until demolition and registered the maximum occurring force in N (tensile strength). A second set of specimens is subjected to a simulated climate treatment, whereby they are incubated in an autoclave at 105 ° C for 15 min.

After the climatic treatment, the moist specimens are dried in a drying oven at 105 ° C for at least 1 hour. For raw densities [RD] above 50 kg / m ³ , the drying time must be extended accordingly. Thereafter, it is cooled to room temperature.

The further procedure corresponds to the investigations for samples without climate treatment.

The ring tensile strength σR before and after autoclave treatment is calculated as follows:

σR

= Mittelwert der Ringreißfestigkeit vor Klimabehandlung

σRA

= Mittelwert der Ringreißfestigkeit nach Klimabehandlung

Calculate the average of 6 samples longitudinally and horizontally. The mean values are to be specified to one decimal place.

.sigma..sub.r

= Mean value of the ring tear strength before climate treatment

σRA

= Average value of ring tensile strength after climate treatment

The corrected ring tensile strength in relation to the nominal gross density is calculated as:

2.2 Thickness change by Nordtest

A product with a nominal density of 50 kg / m ³ and a target glow loss of 3.7% was investigated. The initial thickness was 50 mm, the thickness of the annealed material 160 mm on average. The acrylic acid based binders were cured here at 20 ° C higher temperatures than the standard phenolic resin.

to execution These tests are made using a finished product specimen an edge length of 20 × 20 cm cut out. Part of the specimens is annealed at 450 ° C to the Thickness of the respective material without binding to determine. The other Part will be 7 days at 70 ° C and 95% relative humidity stored. This investigation is under known as "Nordtest".

The thickness change is in proportion determined to the initial thickness. The thickness of the annealed material represents the maximum achievable value. The method usually becomes Used in products of medium density. A technical sensible to be used binder holds the thickness change less than 20% of the initial value or 10% of the maximum value. At a Binder of insufficient durability is already without Nordtest a thickness change observed. The results are summarized in Table 3.

Table 3: Thickness change by Nordtest

Consequently to confirm the performed Investigations that the composition of the invention as formaldehyde-free Binder for The mineral wool production is not only fundamentally suitable, but also after received product quality, processability and economy is practicable. The existing mechanical equipment needs not changed and due to the adjustability of the pH to> 7 is a stronger corrosion not to be feared with the classical binder.

Claims (17)

Binder for mineral wool, characterized in that it contains the following constituents: an aqueous dispersion of at least one polymeric polycarboxylic acid; At least one amine compound having the general formula (1)

in which R 1, R 2 and R 3 independently of one another equal or different from N and R 1 correspond to the general formula (2):

with a value for n of 2-10 and R2 and R3 independently of one another are identical or different from H or correspond to the general formula (3):

Wherein m can be 1-50 and the molecular weight of the amine compound does not exceed about 20,000 g / mol; At least one activated silane obtainable by a reaction of a silane selected from the group consisting of mono-, di- and trialkoxysilanes having a C ₁ to C ₈ alkoxy group, the alkoxysilane having at least one C ₂ to C ₁₀ Aminoalkyl group or a C ₂ to C ₁₀ N-aminoalkyl group; 3 (2-aminoethylamino) propyl trimethoxysilane; (MeO) ₃ -Si (CH ₂ ) ₃ -NH- (CH ₂ ) ₃ -Si- (OMe) ₃ ; 3-aminopropyl-silane triol; Aminosilane with ethoxylated nonylphenolate; Phenyl-CH ₂ -NH- (CH ₂ ) ₃ -NH- (CH ₂ ) ₃ -Si- (OMe) ₃ * HCl; as well as their mixtures; with an enolisable ketone having at least one carbonyl group or a ketone having at least one OH group, wherein the ketone contains 3 to 12 carbon atoms Composition comprising: an aqueous dispersion of at least one polymeric polycarboxylic acid; At least one amine compound having the general formula (1)

in which R1, R2 and R3, independently of one another, are identical or different from H and R1 of the general formula (2):

with a value for n of 2-10 and R2 and R3 independently of one another are identical or different from H or correspond to the general formula (3):

Wherein m can be 1-50 and the molecular weight of the amine compound does not exceed about 20,000 g / mol; At least one activated silane obtainable by a reaction of a silane selected from the group consisting of mono-, di- and trialkoxysilanes having a C ₁ to C ₈ alkoxy group, the alkoxysilane having at least one C ₂ to C ₁₀ Aminoalkyl group or a C ₂ to C ₁₀ N-aminoalkyl group; 3 (2-aminoethylamino) propyl trimethoxysilane; (MeO) ₃ -Si (CH ₂ ) ₃ -NH- (CH ₂ ) ₃ -Si- (OMe) ₃ ; 3-aminopropyl-silane triol; Aminosilane with ethoxylated nonylphenolate; Phenyl-CH ₂ -NH- (CH ₂ ) ₃ -NH- (CH ₂ ) ₃ -Si- (OMe) ₃ * HCl; as well as their mixtures; with an enolizable ketone having at least one carbonyl group or a ketone having at least one OH group, wherein the ketone contains 3 to 12 carbon atoms. Composition according to Claim 2, characterized that the polycarboxylic acid is selected from the group consisting of: polyacrylates, polymethacrylates, Copolymers of acrylic acid and olefinic carboxylic acids with at least two carboxyl groups and with a total of 4 to 20 carbon atoms. Composition according to Claim 2 or 3, characterized that the polymeric polycarboxylic acid a molecular mass between about 500 and 20,000, especially between about 500 and 10,000, preferably between about 500 and 5000 has. Composition according to Claims 2 to 4, characterized that the polymeric polycarboxylic acid is end-capped. Composition according to one of claims 2 to 5, characterized in that the amine compound is selected from the group consisting of: a C ₂ to C ₁₀ - alkanolamine, in particular ethanolamine, diethanolamine, triethanolamine. A composition according to any one of claims 2 to 6, characterized in that the silane is 3-aminopropyltriethoxysilane is. A composition according to any one of claims 2 to 7, characterized in that the ketone dihydroxyacetone or acetylacetone, is. Composition according to any one of Claims 2 to 8, characterized in that it additionally contains at least one surface modifier, in particular a hydroxymethylphenol, preferably resorcinol preferably in an amount of between about 0.1 and 1% by weight, based on the total solids. A composition according to any one of claims 2 to 9, characterized in that it additionally comprises at least one crosslinking agent contains. Composition according to Claim 10, characterized that the crosslinker is selected is selected from the group consisting of: glycerine, polyols, neopentyl glycol, Trimethylallylamine, 1,3,5-triallyl-2-methoxybenzene, 1,1,1-tris (4-hydroxyphenyl) ethane, Triallyl neopentyl ether, pentaerythritol, sugars, sugar molasses; such as their mixtures. A composition according to any one of claims 1 to 11, characterized in that it has a pH in the range of about 5.5 to 9.5; preferably 7.5-8.5. Binder for Mineral wool containing a composition according to at least one of the claims 2 to 12. Process for the preparation of formaldehyde-free bonded Mineral wool with a binder according to claim 13, wherein the Binder following the defibration of a mineral melt on the still hot Applying fibers and applied to the binder mineral wool product a curing process exposes. Method according to claim 14, characterized in that that the binder by spraying the extracted from the mineral melt fibers in the chute the fibers are applied. Tied mineral wool product, available after a method according to any of claims 14 to 15. Use of a composition according to any the claims 2 to 12 for the production of a formaldehyde-free bonded mineral wool product.