Fire-protection composition, multi-component system and use of the same

Abstract

A fire protection composition contains a binder on the basis of an alkoxysilane-functionalized polymer and a liquid carbon supplier. The fire protection composition allows application in a simple and rapid manner of coatings having the layer thickness required for the particular fire resistance time, the layer thickness being reduced to a minimum while achieving a good fireproofing effect. The fire-protection composition is formulated as a multi-component system. The fire-protection composition is particularly suitable for fire protection, especially as a coating of construction elements such as steel carriers.

Claims

1. A fire-protection composition, comprising: an alkoxysilane-functional polymer, which contains, as terminal groups and/or as side groups along a polymer chain, alkoxy-functional silane groups of the general formula (I)
Si(R.sup.1).sub.m(OR.sup.2).sub.3-m (I), wherein R.sup.1 stands for a linear or branched C.sub.1-C.sub.16 alkyl moiety, R.sup.2 for a linear or branched C.sub.1-C.sub.6 alkyl moiety, and m for an integer from 0 to 2, a dehydrogenation catalyst, a liquid carbon source, and optionally a blowing agent, wherein the alkoxysilane-functional polymer is separated from the liquid carbon source to ensure inhibition of reaction.

2. The fire-protection composition according to claim 1, wherein the alkoxysilane-functional polymer comprises a basic backbone, which is selected from the group consisting of a polyether, polyester, polyether ester, polyamide, polyurethane, polyester urethane, polyether urethane, polyether ester urethane, polyamide urethane, polyurea, polyamine, polycarbonate, polyvinyl ester, polyacrylate, polyolefin, polyisobutylene, polysulfide, rubber, neoprene, phenol resin, epoxy resin and melamine.

3. The fire-protection composition according to claim 2, wherein the basic backbone of the alkoxysilane-functional polymer is a polyether or a polyurethane.

4. The fire-protection composition according to claim 1, wherein the alkoxysilane-functional polymer carries at least 2 alkoxyfunctional silane groups.

5. The fire-protection composition according to claim 1, wherein the liquid carbon source is at least one compound selected from the group consisting of liquid polyols and epoxides.

6. The fire-protection composition according to claim 1, further comprising an additional non-liquid carbon source, which is likewise separated from the alkoxysilane-functional polymer to ensure inhibition of reaction.

7. The fire-protection composition according to claim 1, further comprising at least one cross-linking agent.

8. The fire-protection composition according to claim 7, further comprising a co-cross-linking agent.

9. The fire-protection composition according to claim 8, wherein the co-cross-linking agent is water.

10. The fire-protection composition according to claim 1, further comprising an organic additive, an inorganic additive, and/or further additive.

11. A multi-component system, comprising: the fire-protection composition according to claim 1, with a first component (A) and a second component (B) separated from the first component (A), wherein the first component (A) contains a alkoxysilane-functional polyether or a alkoxysilane-functional polyurethane and the second component (B) contains the liquid carbon source.

12. A method of coating, comprising: applying the fire-protection composition according to claim 1 to a surface.

13. The method according to claim 12, comprising applying the composition to coat a construction element.

14. The method according to claim 13, wherein the construction element is a nonmetallic building part.

Description

EXEMPLARY EMBODIMENTS

[0155] For the production of inventive insulating-layer-forming compositions, the individual components are mixed and homogenized by means of a dissolver, as indicated hereinafter. The solids Exolit AP 462 (ammonium polyphosphate microencapsulated with melamine resin, Clariant), Kronos 2056 (titanium dioxide, Kronos International), Melafine (melamine, OCI) and Charmor PM 40 (2,2-bis(hydroxymethyl)-1,3-propanediol, Perstorp), were dried for 18 hours at 110 C. prior to production of the compositions.

[0156] The compositions were stored in a manner protected from atmospheric humidity in 80-mL PE beakers at 40 C.

Example 1

[0157]

TABLE-US-00001 Ingredient of component A Quantity in [g] Geniosil STP-E 10 .sup.1) 135.5 Geniosil GF 96 .sup.2) 6.2 Geniosil XL 10 .sup.3) 6.1 Exolit AP 462 .sup.4) 75.1 Kronos 2056 .sup.5) 37.6 Melafine .sup.6) 37.4 .sup.1) Dimethoxy(methyl)silylmethylcarbamate-terminated polyether, Wacker Chemie AG .sup.2) 3-Aminopropyltrimethoxysilane, Wacker Chemie AG .sup.3) Trimethoxyvinylsilane, Wacker Chemie AG .sup.4) Ammonium polyphosphate microencapsulated with melamine resin, Clariant .sup.5) Titanium dioxide, Kronos International .sup.6) Melafin, OCI Melamine

Example 2

[0158]

TABLE-US-00002 Ingredient Quantity in [g] KANEKA MS Polymer SAX015 .sup.7) 135.3 Geniosil GF 96 .sup.2) 6.2 Geniosil XL 10 .sup.3) 6.1 Exolit AP 462 .sup.4) 75.4 Kronos 2056 .sup.5) 37.6 Melafine .sup.6) 37.9 .sup.7) Silane-terminated polyether, Kaneka Corporation

Example 3

[0159]

TABLE-US-00003 Ingredient Quantity in [g] DESMOSEAL S XP 2749 .sup.8) 135.3 Geniosil GF 96 .sup.2) 6.5 Geniosil XL 10 .sup.3) 6.1 Exolit AP 462 .sup.4) 75.3 Kronos 2056 .sup.5) 37.9 Melafine .sup.6) 37.6 .sup.8) Aliphatic silane-terminated polyurethane, Covestro AG

Example 4

[0160]

TABLE-US-00004 Ingredient Quantity in [g] DESMOSEAL S XP 2749 .sup.8) 132.5 Geniosil GF 96 .sup.2) 6.3 Geniosil XL 10 .sup.3) 6.2 Exolit AP 462 .sup.4) 75.7 Kronos 2056 .sup.5) 37.7 Melafine .sup.6) 37.8 1,1,3,3-Tetramethylguanidine 3.35

Comparison Example 1

[0161]

TABLE-US-00005 Ingredient Quantity in [g] Geniosil STP-E 10 .sup.1) 131.7 Geniosil GF 96 .sup.2) 6.1 Geniosil XL 10 .sup.3) 6.3 Exolit AP 462 .sup.4) 60.0 Kronos 2056 .sup.5) 30.1 Melafine .sup.6) 30.2 Charmor PM 40 .sup.9) 30.1 .sup.9) 2,2-Bis(hydroxymethyl)-1,3-propanediol, Perstorp

Comparison Example 2

[0162]

TABLE-US-00006 Ingredient Quantity in [g] DESMOSEAL S XP 2749 .sup.8) 131.5 Geniosil GF 96 .sup.2) 6.1 Geniosil XL 10 .sup.3) 6.4 Exolit AP 462 .sup.4) 60.3 Kronos 2056 .sup.5) 30.4 Melafine .sup.6) 30.7 Charmor PM 40 .sup.9) 30.6

Comparison Example 3

[0163]

TABLE-US-00007 Ingredient Quantity in [g] KANEKA MS Polymer SAX015 .sup.7) 131.51 Geniosil GF 96 .sup.2) 6.23 Geniosil XL 10 .sup.3) 6.24 Exolit AP 462 .sup.4) 59.79 Kronos 2056 .sup.5) 31.5 Melafine .sup.6) 30.2 Charmor PM 40 .sup.9) 30.2

Comparison Example 4

[0164]

TABLE-US-00008 Ingredient Quantity in [g] DESMOSEAL S XP 2749 .sup.8) 131.5 Geniosil GF 96 .sup.2) 6.1 Geniosil XL 10 .sup.3) 6.2 Exolit AP 462 .sup.4) 60.2 Kronos 2056 .sup.5) 30.1 Melafine .sup.6) 30.0 Charmor PM 40 .sup.9) 15.0 Polyol 4360 .sup.10) 15.1 .sup.10) Propoxylated 2,2-bis(hydroxymethyl)-1,3-propanediol, Perstorp

Comparison Example 5

[0165]

TABLE-US-00009 Ingredient Quantity in [g] Geniosil STP-E 10 .sup.1) 131.3 Geniosil GF 96 .sup.2) 6.0 Geniosil XL 10 .sup.3) 6.2 Exolit AP 462 .sup.4) 60.4 Kronos 2056 .sup.5) 30.6 Melafine .sup.6) 30.1 Charmor PM 40 .sup.9) 15.2 Polyol 4360 .sup.10) 15.3

Viscosity Measurements

[0166] A viscosity curve was plotted with an air-mounted Kinexus Rheometer of Malvern Instruments Ltd., UK, For this purpose, a cone-and-plate system with a diameter of 20 mm and an angle of 1 was used. The measurement temperature was 45 C. and the temperature-stabilization time after sample preparation was 2 minutes. A shear velocity staircase with 14 steps was indicated: 0.1/s; 0.2154/s; 0.4642/s; 1/s; 2.154/s; 4.642/s; 10/s; 21.54/s; 46.42/s; 100/s; 215.4/s; 300/s 464.2/s; 500/s. The measuring point duration was 11 s and the integration time was 5 s. The viscosity at 100/s was used for comparison of the samples. The reported values correspond to the mean of two measurements at 100 s.sup.1.

TABLE-US-00010 TABLE 1 Viscosity of component A of Examples 1 to 4 in Pa .Math. s at 45 C. and 100 s.sup.1 0 days 8 days 14 days 28 days Example 1 6.765 6.289 7.221 7.185 Example 2 0.356 0.489 0.459 0.54 Example 3 2.877 3.357 3.403 3.77 Example 4 3.167 2.013 3.751 3.440

TABLE-US-00011 TABLE 2 Viscosity of Comparison Examples 1 to 5 in Pa .Math. s at 45 C. and 100 s.sup.1 0 days 8 days 18 days Comparison Example 1 11.14 29.5 28.53 Comparison Example 4 3.092 69.66 283.90 Comparison Example 5 6.593 30.1 30.86 0 days 8 days 14 days Comparison Example 2 3.955 34.815 150.35 Comparison Example 3 0.520 2.078 3.688

[0167] As the data in Tables 1 and 2 clearly show, the viscosity of the mixtures of Examples 1 to 4, in which no carbon source and thus no hydroxyl-group-containing or supplying compounds is contained in the polymer component, increases only negligibly over the storage duration. In comparison with this, the viscosity of the mixtures of Comparison Examples 1 to 5, in which a carbon source and thus a hydroxyl-group-containing or supplying compound is contained in the polymer component, increases significantly. This is unambiguous evidence that the storage stability of the mixtures from the comparison examples is much poorer than that of the mixtures from Examples 1 to 4.