HALOGEN-FREE INTUMESCENT FIRE-PROOF COATING, AND USE THEREOF

Abstract

The invention relates to a halogen-free, intumescent fire-proof coating, characterized in that it contains at least one terpene- and/or polyterpene-based film-forming binder, and to the use thereof.

Claims

1. A halogen-free, insulation layer-forming fire protection coating, comprising at least one film-forming binder based on terpenes, polyterpenes or mixtures thereof.

2. The fire protection coating as claimed in claim 1, wherein the terpenes are terpenes as such or mixtures of terpenes with other substances.

3. The fire protection coating as claimed in claim 1, wherein the polyterpenes are synthetic and/or natural polyterpenes, polyterpene resins, rosin ester resins, fully or partially hydrogenated rosin ester resins, maleated derivatives of rosin ester resins, disproportionated derivatives, abietic esters, modified natural resins or mixtures thereof.

4. The fire protection coating as claimed in claim 1, wherein the film-forming binder further comprises at least a hydrocarbon resin, a vinylaromatically modified hydrocarbon resin, modified terpene resins, terpene co- or terpolymers, styrene-terpenes, -methylstyrene terpenes, phenol-modified terpene resins and hydrogenated derivatives thereof, styrene resins, phenol-modified -methylstyrene resins, acrylic acid copolymers, styrene-acrylic acid copolymers and aromatic, aliphatic or cycloaliphatic hydrocarbon resins of the C.sub.5, C.sub.9, C.sub.9/C.sub.10 type and modified or hydrogenated derivatives thereof.

5. The fire protection coating as claimed in claim 1, wherein the polyterpenes derive from -pinene, -pinene, limonene, dipentene, -phellandrene, -phellandrene, -3-carene and/or -2-carene, -terpinene, -terpinene, gamma-terpinene, sylvestrene, -terpinolene, psilimonene, isolimonene, 1-menthene, cis-2-menthene, trans-2-menthene, 3-menthene, 4(8)-p-menthene or mixtures thereof, from unsaturated cyclic, unsaturated linear terpenes or mixtures thereof.

6. The fire protection coating as claimed in claim 5, wherein the unsaturated cyclic terpenes are camphene, tricyclene, cadinene, caryophyllene, bornylene or mixtures thereof and the saturated linear terpenes are alloocimene, citronellene, pseudocitronellene, ocimene, mycrene or mixtures thereof.

7. The fire protection coating as claimed in claim 1, wherein the polyterpene resins contain at least one radical selected from the group consisting of -pinene, -pinene, limonene, dipentene, -phellandrene, -phellandrene, -3-carene, -2-carene, -terpinene, -terpinene, gamma-terpinene, sylvestrene, -terpinolene, psilimonene, isolimonene, 1-menthene, cis-2-menthene, trans-2-menthene, 3-menthene, 4(8)-p-menthene, camphene, tricyclene, cadinene, caryophyllene, bornylene, alloocimene, citronellene, pseudocitronellene, ocimene, mycrene and mixtures thereof.

8. The fire protection coating as claimed in claim 1, wherein the polyterpene resins further comprise at least one monomeric radical selected from the group consisting of isobutylene, 1-alkene, 2-alkene, trisubstituted alkene, vinylcyclohexene, piperylene, isoprene, 2-methyl-2-butene, 2-methyl-1-butene, cyclopentene, acyclic pentene, cyclopentadiene, dicyclopentadiene and mixtures thereof.

9. The fire protection coating as claimed in claim 1, wherein the terpene-phenol resins comprise at least one monomeric radical selected from the group consisting of -pinene, -pinene, -3-carene, limonene and mixtures thereof and at least one monomeric radical selected from the group consisting of styrene, indene, -methylstyrene, aromatic alkylstyrene, divinylbenzene, divinylbenzene having one or more alkyl groups, isobutylene, diisobutylene, 1-alkene, 2-alkene, trisubstituted alkene, vinylcyclohexene, piperylene, isoprene, 2-methyl-2-butene, 2-methyl-1-butene, cyclopentene, acyclic pentene, cyclopentadiene, dicyclopentadiene and mixtures thereof and the phenol is phenol itself, mono-, di- and/or trisubstituted phenol and/or a hydroxyl-substituted naphthalene compound.

10. The fire protection coating as claimed in claim 1, wherein the terpene-hydrocarbon resins are -pinene, -pinene, delta-limonene or mixtures thereof.

11. The fire protection coating as claimed in claim 1, wherein the vinylaromatically modified hydrocarbon resins are phenylethene (cinnamol).

12. The fire protection coating as claimed in claim 1, further comprising film-forming binders, blowing agents, substances which are foam layer-forming and carbon-forming in the event of fire and also assistant and additive substances, thickeners, dispersing additives and solvents.

13. The fire protection coating as claimed in claim 12, wherein the film-forming binder further comprises an organic polymer resin selected from the group consisting of copolymers based on styrene and acrylic esters, copolymers based on acrylic esters, vinyltoluene/acrylate copolymers, styrene/acrylate polymers, homopolymers based on vinyl acetate, copolymers based on vinyl acetate, ethylene and vinyl chloride, copolymers based on vinyl acetate and the vinyl ester of a long-chain, branched carboxylic acid, copolymers based on vinyl acetate and di-n-butyl maleate esters and/or acrylic esters, vinyl/acrylate copolymer, self-crosslinking polyurethane dispersions and mixtures thereof.

14. The fire protection coating as claimed in claim 1, further comprising a blowing agent selected from the group consisting of melamine, guanidine, salts thereof, melamine condensation products, dicyanodiamide and mixtures thereof.

15. The fire protection coating as claimed in claim 14, wherein the blowing agents are melamine phoshate, dimelamine phosphate, pentamelamine triphosphate, trimelamine diphosphate, tetrakismelamine triphosphate, hexakismelamine pentaphosphate, melamine diphosphate, melamine tetraphosphate, melamine pyrophosphate, melamine polyphosphates, melam polyphosphates, melem polyphosphates, melon polyphosphates, melamine cyanurate, melamine borate, melamine silicate, melam, melem, melon, guanidine phosphate, oligomeric esters of tris(hydroxyethyl) isocyanurate with aromatic polycarboxylic acids, benzoguanamine, tris(hydroxyethyl) isocyanurate, allantoin, glycouril, urea cyanurate or mixtures thereof.

16. The fire protection coating as claimed in claim 1, further comprising a foam-forming substance selected from the group consisting of ammonium salts of phosphoric acids, polyphosphoric acids and mixtures thereof.

17. The fire protection coating as claimed in claim 16, further comprising nitrogen-containing phosphates (ammonium polyphosphates) of formulae (NH.sub.4).sub.yH.sub.3-yPO.sub.4/(NH.sub.4PO.sub.3).sub.z where y is 1 to 3 and z is 1 to 10 000.

18. The fire protection coating as claimed in claim 16, wherein the ammonium polyphosphate has a crystal form of phase I, II, III, IV, V, VI or mixtures thereof.

19. The fire protection coating as claimed in claim 16, wherein the ammonium polyphosphate is microencapsulated with organofunctional silanes, melamine-formaldehyde resins and emulsions based on (meth)acrylate resins, on styrene/acrylate copolymers, urethanes, on ethylene/vinyl acetate copolymers, on rubber or mixtures thereof.

20. The fire protection coating as claimed in claim 1, further comprising carbohydrates as carbon-forming substances.

21. The fire protection coating as claimed in claim 20, wherein the carbohydrates are selected from the group consisting of pentaerythritol, dipentaerythritol, tripentaerythritol, polycondensates of pentaerythritol and mixtures thereof.

22. The fire protection coating as claimed in claim 1, further comprising assistant or additive substances selected from the group consisting of glass fibers, mineral fibers, kaolin, talc, aluminum oxide, aluminum hydroxide, magnesium hydroxide, precipitated silicas, silicates, pulverized celluloses and mixtures thereof.

23. The fire protection coating as claimed in claim 1, comprising 5% to 69.7% by weight of film-forming binder, 5% to 25% by weight of blowing agent, 5% to 40% by weight of foam-forming substance, 5% to 25% by weight of carbon-forming substance, 5% to 40% by weight of assistant and additive substances, 0.2% to 10% by weight of thickener, 0.1% to 10% by weight of dispersing additives and 10% to 40% by weight of solvent and/or solvent mixtures, wherein the components sum to 100% by weight.

24. The fire protection coating as claimed in claim 1, comprising 8% to 51.4% by weight of film-forming binder, 6% to 20% by weight of blowing agent, 15% to 35% by weight of foam-forming substance, 6% to 20% by weight of carbon-forming substance, 5% to 20% by weight of assistant and additive substances, 0.5% to 8% by weight of thickener, 0.1% to 8% by weight of dispersing additives and 14% to 40% by weight of solvent and/or solvent mixtures, wherein the components sum to 100% by weight.

25. The fire protection coating as claimed in claim 1, comprising 10% to 36.1% by weight of film-forming binder, 7% to 12% by weight of blowing agent, 20% to 30% by weight of foam-forming substance, 8% to 10% by weight of carbon-forming substance, 7% to 10% by weight of assistant and additive substances, 0.8% to 3% by weight of thickener, 0.1% to 5% by weight of dispersing additives and 21% to 35% by weight of solvent and/or solvent mixtures, wherein the components sum to 100% by weight.

26. A coated steel construction comprising a fire protection coating as claimed in claim 1.

27. Steel, wood, wood-based materials, paper, mineral wool, plasterboard, plastics, metals, alloys, fabrics made of synthetic or natural fibers and other suitable materials, a solder mask electrical switches and circuits comprising a fire protection coating as claimed in claim 1.

Description

EXAMPLE 1 (COMPARATIVE)

[0095] 27 parts by weight of Exolit AP 422

[0096] 10 parts by weight of Pliolite AC 80

[0097] 6 parts by weight of chloroparaffin

[0098] 8 parts by weight of melamine

[0099] 8 parts by weight of pentaerythritol

[0100] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 1.

EXAMPLE 2

[0101] 27 parts by weight of Exolit AP 422

[0102] 16 parts by weight of Piccolyte A125

[0103] 8 parts by weight of melamine

[0104] 8 parts by weight of pentaerythritol

[0105] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 1.

EXAMPLE 3

[0106] 27 parts by weight of Exolit AP 422

[0107] 12 parts by weight of Piccolyte A125

[0108] 8 parts by weight of melamine

[0109] 8 parts by weight of pentaerythritol

[0110] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 1.

EXAMPLE 4

[0111] 27 parts by weight of Exolit AP 422

[0112] 20 parts by weight of Piccolyte A125

[0113] 8 parts by weight of melamine

[0114] 8 parts by weight of pentaerythritol

[0115] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 1.

EXAMPLE 5

[0116] 27 parts by weight of Exolit AP 422

[0117] 10 parts by weight of Piccolyte A125

[0118] 6 parts by weight of Piccolyte C125

[0119] 8 parts by weight of melamine

[0120] 8 parts by weight of pentaerythritol

[0121] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 1.

EXAMPLE 6

[0122] 27 parts by weight of Exolit AP 422

[0123] 10 parts by weight of Piccolyte A125

[0124] 6 parts by weight of Piccolyte S125

[0125] 8 parts by weight of melamine

[0126] 8 parts by weight of pentaerythritol

[0127] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 1.

EXAMPLE 7

[0128] 27 parts by weight of Exolit AP 422

[0129] 10 parts by weight of Piccolyte A125

[0130] 6 parts by weight of Pliolite AC 80

[0131] 8 parts by weight of melamine

[0132] 8 parts by weight of pentaerythritol

[0133] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 1.

TABLE-US-00001 TABLE 1 Amounts and type Solvent mixture of of film-forming Blowing Foam- 75 pbw xylene binder (terpene/ agent forming Carbon-forming Assistant 20 pbw Shellsol polyterpene) (melamine/ substance substance and additive Dispersing 100/140 (chloroparaffin) MPP) (APP) (carbohydrates) substances Thickeners additives 5 pbw methyl ethyl Example parts by weight ketone 1 (C) 10 Pliolite AC80 8 melamine 27 AP422 8 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 32 6 chloroparaffin dioxide PA 20 XA 2163 2 16 Piccolyte A125 8 melamine 27 AP422 8 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 32 dioxide PA 20 XA 2163 3 12 Piccolyte A125 8 melamine 27 AP422 8 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 36 dioxide PA 20 XA 2163 4 20 Piccolyte A125 8 melamine 27 AP422 8 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 28 dioxide PA 20 XA 2163 5 10 Piccolyte A125 8 melamine 27 AP422 8 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 32 6 Piccolyte C 125 dioxide PA 20 XA 2163 6 10 Piccolyte A125 8 melamine 27 AP422 8 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 32 6 Piccolyte S 125 dioxide PA 20 XA 2163 7 10 Piccolyte A125 8 melamine 27 AP422 8 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 32 6 Pliolite AC80 dioxide PA 20 XA 2163 (C) = comparison pbw = parts by weight

EXAMPLE 8

[0134] 22 parts by weight of Exolit AP 422

[0135] 20 parts by weight of Piccolyte A125

[0136] 10 parts by weight of melamine

[0137] 8 parts by weight of pentaerythritol

[0138] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 2.

EXAMPLE 9

[0139] 20 parts by weight of Exolit AP 422

[0140] 10 parts by weight of Sylvares TR 90

[0141] 12 parts by weight of melamine

[0142] 10 parts by weight of pentaerythritol

[0143] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 2.

EXAMPLE 10

[0144] 30 parts by weight of Exolit AP 422

[0145] 25 parts by weight of Sylvares TR 90

[0146] 10 parts by weight of melamine

[0147] 10 parts by weight of pentaerythritol

[0148] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 2.

EXAMPLE 11

[0149] 25 parts by weight of Exolit AP 422

[0150] 12 parts by weight of Sylvares TR 105

[0151] 8 parts by weight of melamine

[0152] 8 parts by weight of pentaerythritol

[0153] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 2.

EXAMPLE 12

[0154] 25 parts by weight of Exolit AP 422

[0155] 14 parts by weight of Sylvares TR 105

[0156] 8 parts by weight of melamine

[0157] 10 parts by weight of pentaerythritol

[0158] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 2.

EXAMPLE 13

[0159] 25 parts by weight of Exolit AP 422

[0160] 16 parts by weight of Sylvares TR B 115

[0161] 10 parts by weight of melamine

[0162] 8 parts by weight of pentaerythritol

[0163] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 2.

EXAMPLE 14

[0164] 28 parts by weight of Exolit AP 422

[0165] 10 parts by weight of Sylvares TR 1100

[0166] 7 parts by weight of melamine

[0167] 8 parts by weight of pentaerythritol

[0168] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 2.

EXAMPLE 15

[0169] 24 parts by weight of Exolit AP 422

[0170] 16 parts by weight of Sylvares TR 7115

[0171] 10 parts by weight of melamine

[0172] 10 parts by weight of pentaerythritol

[0173] ad 100 parts by weight of assistant and additive substances, thickeners, dispersing additives and solvents according to table 2.

TABLE-US-00002 TABLE 2 Amounts and type Solvent mixture of of film-forming Blowing Foam- 75 pbw xylene binder (terpene/ agent forming Carbon-forming Assistant 20 pbw Shellsol polyterpene) (melamine/ substance substance and additive Dispersing 100/140 (chloroparaffin) MPP) (APP) (carbohydrates) substances Thickeners additives 5 pbw methyl ethyl Example parts by weight ketone 8 20 Piccolyte A125 10 melamine 22 AP422 8 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 31 dioxide PA 20 XA 2163 9 10 Sylvares TR 90 12 melamine 30 AP422 10 pentaerythritol 10 titanium 0.8 Luvotix 0.2 Disperbyk 27 dioxide PA 20 XA 2163 10 25 Sylvares TR 90 10 melamine 20 AP422 10 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 26 dioxide PA 20 XA 2163 11 12 Sylvares TR 90 8 melamine 25 AP422 8 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 38 dioxide PA 20 XA 2163 12 14 Sylvares TR 90 8 melamine 25 AP422 10 pentaerythritol 9 titanium 0.8 Luvotix 0.2 Disperbyk 32 dioxide PA 20 XA 2163 13 16 Sylvares TR 90 10 melamine 25 AP422 8 pentaerythritol 10 titanium 0.8 Luvotix 0.2 Disperbyk 30 dioxide PA 20 XA 2163 14 10 Sylvares TR 90 7 melamine 28 AP422 8 pentaerythritol 8 titanium 0.8 Luvotix 0.2 Disperbyk 38 dioxide PA 20 XA 2163 15 16 Sylvares TR 90 10 melamine 24 AP422 10 pentaerythritol 7 titanium 0.8 Luvotix 0.2 Disperbyk 32 dioxide PA 20 XA 2163 pbw = parts by weight

[0174] The thus produced intumescence formulation was applied as an intumescence coating to a radiated steel sheet SA 2.5 (2802805 mm) and a fire test according to DIN 4102 part 8, fire curve ISO 834 (ETK) with a dry film thickness of 1000 m was performed. This resulted in the fire resistance times shown in table 3 (T.sub.critical=500 C.).

[0175] The inventive intumescence formulations using polyterpene resins are therefore exceptional for producing effective intumescence coatings.

TABLE-US-00003 TABLE 3 Film-forming binder Intumescence Pliolite AC T.sub.critical = formulations 80 Piccolyte A 125 // Expansion 500 C. from [% by wt.] C 125/S 125 x-fold [min.] Example 1 10 0/0/0 35 55 Example 2 0 16/0/0 60 76 Example 3 0 12/0/0 45 62 Example 4 0 20/0/0 80 43 Example 5 0 10/6/0 65 70 Example 6 0 10/0/6 80 83 Example 7 6 10/0/0 40 47

[0176] To test water resistance the thus obtained fire protection coating is applied to an aluminum sheet (701500.8 mm) (film thickness before drying is 1 mm) and subsequently dried at 26 C. for 24 h. Half of the sheet is then immersed longitudinally in a water bath for a further 24 h and blister formation at the surface is then visually determined. Evaluation was carried out in photographic/computer-assisted fasion.

[0177] Table 4 reports the proportion of the surface immersed in water affected by blistering in %. The greater the affected surface area the lower the water resistance. This is important for exterior applications in particular. When the coating is generally exposed to moisture and weather a good and lasting surface stability is of essential importance to ensure the smoothness of the applied coating and the longevity thereof.

TABLE-US-00004 TABLE 4 Film-forming binder Intumescence Pliolite AC formulations 80 Piccolyte A 125 // Affected from [% by wt.] C 125/S 125 surface area in % Example 1 10 0/0/0 35 Example 2 0 16/0/0 52 Example 3 0 12/0/0 68 Example 4 0 20/0/0 42 Example 5 0 10/6/0 50 Example 6 0 10/0/6 38 Example 7 6 10/0/0 76

[0178] When in any of examples 1 to 16 the foam-forming substance Exolit AP 422 is exchanged for Exolit AP 462 given an otherwise identical overall composition, analogous results are obtained for the fire resistance times and in the testing for blister formation.

[0179] The following examples 16 to 20 describe the effect on drying time of changing the solvent system.

EXAMPLE 16

[0180] 27 parts by weight of Exolit AP 422

[0181] 16 parts by weight of Piccolyte A125

[0182] 8 parts by weight of melamine

[0183] 8 parts by weight of pentaerythritol

[0184] 8 parts by weight of titanium dioxide

[0185] 30 parts by weight of mixture of xylene and Shellsol 100/140 (Table 3)

[0186] ad 100 parts by weight of thickener (Luvotix PA 20 XA), assistant and additive substances (fibers and fillers), dispersing additives, solvent (methyl ethyl ketone (MEK)).

EXAMPLE 17

[0187] 27 parts by weight of Exolit AP 422

[0188] 16 parts by weight of Piccolyte A125

[0189] 8 parts by weight of melamine

[0190] 8 parts by weight of pentaerythritol

[0191] 8 parts by weight of titanium dioxide

[0192] 30 parts by weight of mixture of xylene, Shellsol 100/140 and 2-propanol (table 3)

[0193] ad 100 parts by weight of thickener (Plioway EC-T), assistant and additive substances (fibers and fillers), dispersing additives, solvent (methyl ethyl ketone (MEK)).

EXAMPLE 18

[0194] 27 parts by weight of Exolit AP 422

[0195] 16 parts by weight of Piccolyte A125

[0196] 8 parts by weight of melamine

[0197] 8 parts by weight of pentaerythritol

[0198] 8 parts by weight of titanium dioxide

[0199] 30 parts by weight of mixture of xylene, Shellsol 100/140 and 2-propanol (table 3)

[0200] ad 100 parts by weight of thickener (Luvotix PA 20 XA), assistant and additive substances (fibers and fillers), dispersing additives, solvent (methyl ethyl ketone (MEK)).

EXAMPLE 19

[0201] 27 parts by weight of Exolit AP 422

[0202] 16 parts by weight of Piccolyte A125

[0203] 8 parts by weight of melamine

[0204] 8 parts by weight of pentaerythritol

[0205] 8 parts by weight of titanium dioxide

[0206] 30 parts by weight of mixture of xylene, Shellsol 100/140 and 2-propanol (table 3)

[0207] ad 100 parts by weight of thickener (Luvotix PA 20 XA), assistant and additive substances (fibers and fillers), dispersing additives, solvent (methyl ethyl ketone (MEK)).

EXAMPLE 20

[0208] 27 parts by weight of Exolit AP 422

[0209] 16 parts by weight of Piccolyte A125

[0210] 8 parts by weight of melamine

[0211] 8 parts by weight of pentaerythritol

[0212] 8 parts by weight of titanium dioxide

[0213] 30 parts by weight of mixture of xylene, Shellsol 100/140 and 2-propanol (table 3)

[0214] ad 100 parts by weight of thickener (Luvotix PA 20 XA), assistant and additive substances (fibers and fillers), dispersing additives, solvent (methyl ethyl ketone (MEK)).

[0215] The drying rate of the intumescence coating according to the invention may be greatly increased by partial replacement of the solvent xylene by 2-propanol. The drying time is defined as the time at which a constant weight over a period of 3 days is achieved and the nail test shows no marking in the coating surface.

[0216] Table 5 shows the effect of the 2-propanol content on the drying rate of a 2000 m coating on a steel plate at room temperature. The drying time decreases continuously with increasing 2-propanol content.

TABLE-US-00005 TABLE 5 Solvent system Intumescence xylene Shellsol Drying time at RT formulation [% by 100/140 2-propanol DFT = 2000 m from wt.] [% by wt.] [% by wt.] [days] Example 16 50 50 0 46 Example 17 25 50 25 38 Example 18 15 50 35 32 Example 19 10 50 40 24 Example 20 5.0 47.5 47.5 20

[0217] It is finally noted again that the preceding detailed compositions and coatings are merely preferred exemplary embodiments which may be modified by those skilled in the art in a very wide variety of ways without departing from the scope of the invention insofar as defined by the claims. In particular other concentrations of the respective components may be used provided the compound has a sufficient fire protection suitability.

[0218] The inventive intumescence compositions exhibited a reduction in the start temperature of the intumescence reaction to as low as 220 C. (demonstrated by thermogravimetric analyses (TGA)) so that in the event of fire the protective fire protection foam may be formed sooner, i.e. at relatively low fire temperatures, thus preventing damage more quickly.