MXPA98008945A - Ignifuged fabrics based on melam resin fibers - Google Patents

Abstract

The present invention relates to fireproof fabrics based on melamine resin fibers, blankets and fire safety clothing manufactured therefrom, and their use for extinguishing fires and for protecting people and objects from fire, combustion products and / or of the extinguisher

Description

Impregnated fabrics based on MELAMINE RESIN FIBERS The present invention consists of fireproof fabrics based on melamine resin fibers, fire safety blankets and clothing manufactured from them, and their use for extinguishing fires and protecting people and objects from fires, the products of combustion and / or extinguishers. Conventional fire safety blankets, or just "fire blankets" are generally used to fight minor fires by extinguishing flames by suffocation. Known fire safety blankets, and fire safety clothing frequently consist of fiberglass fabrics. These fire safety blankets have the disadvantage of being very fragile and melting easily. More specifically, there is consequently a danger that fire safety blankets made from this material will burn in the event of a fire. In addition, fire safety blankets based on aramid fiber are known, but these blankets are still very expensive. In addition, the flame-retardant effect of the aramid-based fabrics is still unsatisfactory. In addition, fire safety clothing made with these fabrics offers only moderate comfort in use.

However, there is also a need for fire safety blankets that are not primarily used as fire extinguishing blankets but may be suitable in particular for protecting persons or objects from fire, heat, combustion products, such as hollin or extinguishers. . These security fabrics would be particularly useful for example in churches and museums, which often house a multiplicity of irreplaceable works of art which are poorly protected against fire and, in the case of a fire, against the direct consequences of fire, such as heat and soot, and also against the consequences of extinction measures. Prior art fire safety blankets are unsuitable for this specific purpose since they are too heavy, too rigid or too permeable to microparticles or liquids. An object of the present invention is to provide a fireproof fabric for blankets or fire safety clothing, which offers effective protection against fire, combustion products and / or extinguishers, that is, resistant to heat, water, impurities and / or oil. We have found that this objective is achieved by a fire-retardant fabric consisting, based on the total weight of the fabric, of: (a) from 4.9 to 95% by weight of melamine resin fibers, (b) from 0 to 90.1 % by weight of fireproofed fibers that are selected from the group consisting of: aramid fibers, carbon fibers, glass fibers, flame retardant wool and flame retardant viscose, and (c) from 0 to 20% by weight of fillers, in addition contains, (d) from 4.9 to 95% by weight of normal flammable fibers and / or (e) from 0.1 to 20% by weight of at least one finish resistant to heat, oil, impurities and / or moisture. The present invention also provides blankets and fire safety clothing that can be manufactured in the fire retardant fabric of the present invention. The invention further provides the use of these fire safety blankets to protect objects from fire, heat, products of combustion and / or extinguishers, and also for use to extinguish fires. The fire retardant fabrics containing the aforementioned constituents a), b), c) and d) above can be conventionally woven of yarns or produced in the form of non-woven fabrics from fibers or combinations of fibers (see Ullmann 's Enzyklopádie der Technischen Chemie, 4th edition, volume 23, "Textiltechnik"). Subsequently component e) is applied. It is also possible to finish fibers a), b) and d), or the threads yarns from these, with the component e), and then further processing the fibers or yarns in the fabrics of this invention. However, the fabrics of this invention can also include from about 4.9 to 95% by weight, of Preferably about 5 to 50% by weight, in particular from about 10 to 45% by weight of the normal flammable fabric, for example wool, cotton, polyamide fibers, polyester fibers and viscose. But the amount that is used of these fibers must not adversely affect the flame retardancy of the fabric. The addition of normal flammable fabrics offers various ^ fc advantages. If, for example, cotton or other comparable fibers are used as another component, it is possible to produce fabrics having a better water absorption capacity, with which is possible to obtain improved protection of moisture, for example from the water used in extinguishing the fire. In addition, the addition of normal flammable fibers can improve the wearing comfort of the fabrics. This is a particular advantage when protective clothing is manufactured from these fabrics. Also, the addition of normal flammable fibers causes a considerable reduction in the cost of flame retardant fabrics based on melamine fibers. Instead of the normal flammable fibers or in combination with these, the fabrics of this invention may include from 0.1 to 20% by weight, preferably approximately 0.5 to 10% by weight of a heat-resistant finish, oil, impurities and / or humidity. The fabric can be impregnated or coated with the finish. Examples of finishes that are suitable for use in conjunction with the present invention are metal coatings applied to one side or both sides, for example. aluminum. These metal coatings, which are usually applied at a thickness of for example 5-200 μ, preferably 10-100 μ, so that the flexibility of the cloth is not adversely affected, protect from fire, the action of heat and especially radiant heat, soot and extinguishers, for example water and foams or powders. In line with the provisional European standard pr EN 1486, metallized fabrics are suitable for manufacturing protective suits for protection against heat and fire, heavy duty. The fabric is usually metallized by vacuum vapor deposition (see Ullmann's Enzyklopadie der Technischen Chemie, 3rd edition, vol.15, p.276 and references cited therein). It is also possible to adhere metallic tin sheets to the fabric. These metal sheets generally consist of a polymeric support film coated with a thin film of metal. These preferably contain a polymeric support based on polyester. The metal foils can be applied on one or preferably both sides of the fabric of this invention, in accordance with TL 8415-0203 (TL = technical specification of the German defense force stores), for example, by means of an adhesive or by hot pressing. These sheets are used for the coating of fabrics by various manufacturers (eg Gentex Corp., Carbondale PA, USA, C.F.Ploucquet GmbH &Co, D-89522 Heidenheim, Darmstadter GmbH, D-46485 Wesel). It is also possible to produce the fabrics of this invention from metallized yarns or fibers. The threads are preferably coated, with aluminum in layer thicknesses in the range of 10-100 μ, while the fibers have metal coatings from 0.01 to 1 μ. These yarns or fibers are producible for example in line with the processes described in DE-B 27 42 768, DE-A 38 10 597 or EP-A 528 192. Other examples of finishes suitable for use in conjunction with the present invention are hydrophobic water repellent layers that are applied on one or both sides of the fabric. These layers consist, preferably, of materials including polyurethane and / or materials including polytetrafluoroethylene. These coatings are already known to improve the protection of textiles outdoors (see Ullmann's Enzyklopádie der Technischen Chemie, 5th edition, vol. A26 p. 306-312, and Lexikon für Textilveredelung, 1955, p. 211). These coatings can be formed in such a way that water vapor can diffuse through the chamber, but liquid water or similar fire extinguishing products and combustion products can not pass through it to any significant degree, if any. something happens These coatings are usually adhered or pressed onto the fabric as polymeric films. Other measures to improve the protection offered by fire safety blankets are the finishing of the fiber or fabric with water, oil and / or impurity repellent compounds (oleophobic or hydrophobic finish). These compounds are known for use as auxiliaries in textiles (see Uullmann's Encyclopedia of Industrial Chemistry 5th edition, vol.A26, pp. 306-312). Examples of water repellent compounds are metal soaps, silicones, organofluoride compounds, for example salts of perfluorinated carboxylic acids, perfluorinated alcohol polyacrylates (see EP-B-366 338 and the references mentioned therein) or tetrafluoroethylene polymers. The last two polymers are also used especially as oleophobic, oil repellent finishes.

The melamine resin fibers that are used in conjunction with this invention can be produced, for example, by the methods described in EP-A-93 965, DE-A 23 64 091, EP-A-221 330 or EP-A-408 947. The particularly preferred melamine resin fibers include as monomer block (A) from 90 to 100 mol% of a mixture consisting essentially of from 30 to 100, preferably from 50 to 99, particularly preferably from 85 to 95, particularly from 88 to 93 mol% of melamine and from 0 to 70, preferably from 1 to 50, particularly preferably from 5 to 15, especially from 7 to 12 mol% of a substituted melamine I or substituted melamine mixtures I. another monomer building block (B), particularly preferred melamine resin fibers include from 0 to 10, preferably from 0.1 to 9.5, particularly from 1 to 5 mol%, based on the total number of moles of the monomer building blocks (A) and (B), of a phenol or a mixture of phenols. Particularly preferred melamine resin fibers are commonly obtained by reacting the components (A) and (B) with formaldehyde or compounds that provide formaldehyde, in a molar ratio of melamine to formaldehyde within the range of 1: 1.15 to 1: 4.5, preferably from 1: 1.8 to 1: 3.0, and the subsequent spinning . Suitable substituted melamines of the general formula I: are those in which X1, X2 and X3 each are selected from the group consisting of -NH2, -NHR1 and -NR ^ -R2, although X1, X2 and X3 not all must be NH2, and R1 and R2 each are selected from the group consisting of C2-C10 hydroxyalkyl, C2-C4 hydroxyalkyl (C2-C4 oxaalkyl) n, wherein n is from 1 to 5, and C2-C12 aminoalkyl. The C2-C10 hydroxyalkyl is preferably C2-C6 hydroxyalkyl such as 2-hydroxyethyl, 3-hydroxy-n-propyl, 2-hydroxyisopropyl, 4-hydroxy-n-butyl, 4-hydroxy-n-pentyl, -hydroxy-n-hexyl, 3-hydroxy-2,2-dimethylpropyl, preferably C2-C4 hydroxyalkyl, such as 2-hydroxyethyl, 3-hydroxy-n-propyl, 2-hydroxyisopropyl and 4-hydroxy-n- butyl, particularly preferably 2-hydroxyethyl or 2-hydroxyisopropyl. The C2-C4 hydroxyalkyl (C2-C4 oxaalkyl) n preferably has n from 1 to 4, particularly preferably n ******* 1 or 2, such as 5-hydroxy-3-oxapentyl, -hydroxy-3-oxa-2, 5-dimethylpentyl, 5-hydroxy-3-oxa-1,4-dimethylpentyl, 5-hydroxy-3-oxa-l, 2,4,5-tetramethylpentyl, 8-hydroxy-3 , 6-dioxaoctyl.

The C2-C12 aminoalkyl is preferably C2-C8 aminoalkyl, such as 2-aminoethyl, 3-aminopropyl, 4-aminobutyl, 4-aminopentyl, 6-aminohexyl, 7-aminoheptyl, and also 8-amino octyl, particularly preferably 2-aminoethyl and 6-aminohexyl, very particularly preferably 6-aminohexyl. The substituted melamines particularly suitable for the invention include the following compounds: melamines substituted with 2-hydroxyethylamine, such as 2- (2-hydroxyethylamino) -4,6-diamino-1,3,5-triazine, 2,4-dihydroxy-diamine (2-hydroxyethylamino) -6-amino-1,3,5-triazine, 2,4,6-tris (2-hydroxyethylamino) -1,3,5-triazine, melamines substituted with 2-hydroxyisopropylamine, as for example 2 (2-hydroxyisopropylamino) -4,6-diamino-1,3,5-triazine, 2,4-di- (2-hydroxyisopropylamino) -6-amino-1,3,5-triazine, 2,4,6- tris (2-hydroxyisopropylamino) -1,3,5-triazine, melamines substituted with 5-hydroxy-3-oxapentylamino- such as 2- (5-hydroxy-3-oxapentylamino) -4,6-diamino-1, 3 , 5-triazine, 2,4, -tris- (5-hydroxy-3-oxapentylamino) 1,3,5-triazine, 2,4-di (5-hydroxy-3-oxapentylamino) -6-amino-1, 3, 5-triazine, and also melamine substituted with 6-aminohexylamino such as 2- (6-aminohexylamino) -4,6-diamino-1,3,5-triazine, 2,4-di (6-aminohexylamino) - 6-amino-l, 3, 5-triazine, 2,4,6-tris (6-aminohexylamino) -1,3,5-triazine, or mixtures of these compounds, for example a mixture of 10 mol% of 2- (5-hydroxy-3-oxapentylamino) -4, 6-diamino-1,3,5-triazine, 50 mol% of 2,4-di (5-hydroxy-3-oxapentylamino) -6-amino-1, 3,5-triazine, and 40% mol of 2,4,6-tris (5-hydroxy-3-oxapentylamino) 1,3,5-triazine. Suitable phenols (B) are phenols containing 1 or 2 hydroxyl groups, such as unsubstituted phenols, radical substituted phenols which are selected from the group consisting of C 2, C 9 alkyl and hydroxyl, and also alkanes of C1-C4 substituted by two or three phenol groups di (hydroxyphenyl) sulfones or mixtures thereof. Preferred phenols include phenol, 4-methylphenol, 4-tert-butylphenol, 4-n-octylphenol, 4-n-nonylphenol, pyrocatechol, resorcinol, hydroquinone, 2,2-bis (4-hydroxyphenyl) propane, bis (4-) hydroxyphenyl) sulfone, particularly preferably phenol, resorcinol and 2,2-bis (4-hydroxyphenyl) propane. The formaldehyde is generally used in the form of an aqueous solution having a concentration of, for example, from 40 to 50% by weight or in the form of compounds that provide formaldehyde in the course of the reaction with (A) and (B) ), for example in the form of oligomeric or polymeric formaldehyde in solid form, such as paraformaldehyde, 1,3,5-trioxane or 1,3,5,7-tetraoxane. Particularly preferred melamine resin fibers are produced by customary polycondensation of melamine, optionally substituted melamine and optionally phenol together with formaldehyde and formaldehyde-providing compounds. All the components can be present from the start or they can be reacted a little at a time gradually while the resulting precondensates are subsequently mixed with more melamine, substituted melamine or phenol. The polycondensation is carried out in a conventional manner (see EP-A-355 760, Houben-Weyl, vol 14/2, p.357 ff). The reaction temperatures that are used in general will be within the range of 20 to 150 ° C, preferably from 40 to 140 ° C. The reaction pressure is generally non-critical. The reaction is generally carried out within the range of 100 to 500 kPa, preferably at atmospheric pressure. The reaction can be carried out with or without solvent. If aqueous formaldehyde solution is used, it usually does not add solvent. If formaldehyde is used in solid form, water is usually used as a solvent, the amount generally used being in the range of 5 to 40, preferably 15 to 20% by weight, based on the total amount of monomer used. In addition, the polycondensation is generally carried out within a pH range greater than 7. Preference is given to the pH range of 7.5 to 10.0 particularly preferably from 8 to 9. In addition, the reaction mixture may include small amounts of the customary additives such as alkali metal sulphites, for example sodium metabisulfite and sodium sulfite, alkali metal formats, for example sodium format, alkali metal citrates, for example sodium citrate, phosphates, polyphosphates, urea, dicyandiamide or cyanamide These can be added as pure individual compounds or as mixtures with each other, without solvents or as aqueous solutions, before, during or after the condensation reaction. Other modifiers are amines and amino alcohols such as diethylamine, ethanolamine, diethanolamine or 2-diethylaminoethanol. Examples of suitable fillers include fibrous or pulverulent inorganic reinforcing agents, or fillers such as glass fibers, metal powders, metal salts or silicates, for example, kaolin, talc, barite, quartz or chalk, also pigments and dyes . The emulsifiers which are generally used are the nonionic, anionic or cationic organic compounds customary with long chain alkyl radicals.

The polycondensation can be carried out batchwise or continuously, for example in an extruder (see Ep-A-355 760), in a conventional manner. The fibers are generally produced by spinning the melamine resin of the present invention in a conventional manner, for example after the addition of a hardener, the customary acids such as formic acid, sulfuric acid or ammonium chloride, at room temperature, in an apparatus for rotary spinning and subsequently curing the raw fibers in a heated atmosphere, or spinning in a heated atmosphere while at the same time evaporating the water using a solvent and curing the condensate. This process is described in detail in DE-A-23 64 091. If desired, the fibers may have added to these up to 25, preferably up to 10% by weight of customary fillers, especially those based on silicates, as mica, dyes, pigments, metal powders and delusterants and then be processed to blankets and non-woven fabrics of corresponding fire safety. Fire safety blankets are manufactured in a customary manner by converting the fibers into yarns in a conventional manner, for example by yarn spun (Ullmann's Enzyklopadie der Techischen Chemie, 4th edition, vol 23, "Textiltechnik"), the yarns preferably they have a linear density in the range of 100 to 200, particularly preferably 140 to 160 tex. The threads are then generally woven in a conventional manner into fabrics having a basis weight in the range of 70 to 900, preferably 120 to 500 g / m2. The fire safety blankets of this invention can also be produced from non-woven fiber webs. Non-woven fabrics are generally obtained by processing the fibers into cross-layered reticles. These preferably have a basis weight in the range of 30 to 600, preferably 50 to 450 g / m2. According to the invention, it is also possible to prepare fire safety blankets from fiber blends consisting essentially of from 4.9 to 95% by weight, preferably from 25 to 90% by weight, particularly preferably from 40 to 75% by weight. % by weight of melamine resin fibers and from 0 to 90.1% by weight, preferably from 5 to 70% by weight, particularly preferably from 15 to 50% by weight, of fire-retardant fibers. In addition, as already mentioned, these combinations of fibers may include from 4.9 to 95% by weight, preferably from 5 to 50% by weight, in particular from 5 to 45% by weight of normal flammable fibers selected from the group consisting of wool, cotton, polyamide fibers, polyester fibers and viscose.

Flame-retardant fibers are preferably glass fibers, carbon fibers, fire-retardant wool, flame retardant viscose and especially aramid fibers. The aramid fibers are preferably produced by spinning solutions of the polycondensation products of iso- or terephthalic acid or derivatives thereof, such as acid chlorides, with para-, meta-phenylenediamine in solvents with n-methylpyrrolidone, hexamethylphosphoric triamide , concentrated sulfuric acid or customary mixtures thereof. The resulting continuous filament fibers are then usually cut into small fibers whose thickness is generally within the range of 5 to 25 μ. Preferred aramid fibers are those based on an isomeric poly-p-phenylene terephthalamide. The fiber combinations are processed in a conventional manner, for example in the customary fiber combiner apparatus, as described in Vliesstoffe, Georg Thieme Verlag. In a preferred embodiment, it is customary to start from small fibers having a customary length from 1 to 20 cm. These are generally fed through a conveyor to a stationary card in the upper part and are precomposed in it. The combination is then usually completed in a cylinder carder to obtain a wadding-like veil. The resulting wadding-like veil is then further processed into yarns or non-woven fabrics. The woven or nonwoven fabrics are then cut to the dimensions of the desired blanket, which from experience to date depends only on the proposed use. Finally, the edges of the blankets are consolidated, usually by stitching. Fire safety blankets contain a metallic coating, either directly on the fiber or on the finished fabric, they are characterized by the passage of heat retarded through them and in this way by improving the protection against heat for objects that they are going to be protected. In another embodiment, the fibers are mixed with salts, especially silicates, but particularly preferably aluminum and magnesium silicates, or foaming developer substances by impregnation, brush coating or the like. According to the invention, fire safety blankets are used to extinguish fires, objects and person in combustion. The fabrics of this invention are also used to manufacture fire safety blankets to protect people and objects from fires, products from fire extinguishers and / or combustion covering people and objects that are to be protected with fire safety blankets from the invention. In addition, the fire safety blankets of the invention are suitable for protecting art pieces and / or antiques. These are also useful to protect houses and containers in trucks, trains or boats that contain flammable substances and also tankers and gas containers, electrical or electronic equipment, such as computers, terminals, control panels. The fabrics of this invention are also suitable for use as flame retardant covers for upholstered seats in automobiles, airplanes, rail cars and so on. An advantage of the fire safety blankets and non-woven fabrics of this invention is that fire safety blankets and non-woven fabrics according to the invention do not melt with heating or by direct contact with a fire or flame. and in this way they do not drip, and blankets and non-woven fabrics therefore also retain the stable form under the action of heat. Another advantage of the fire safety blankets of this invention is that they provide effective protection against water and other extinguishers and against combustion products, such as soot.

Examples Example 1: A fabric composed of a yarn containing 60% by weight of melamine resin fibers and 40% by weight of p-aramid fibers and with a basis weight of 220 g / m2 was treated with a commercial fluorocarboxylic acid finish by saturating the fabric with a liquor containing 30 g / 1 of Persistol® or (commercial product of BASF) and also 3 g / 1 of aluminum sulfate and lg / l of acetic acid at 60% concentration. The absorption of the liquor is 70% by weight. The fabric was then dried at 130 ° C to a residual moisture content of 6 to 8% by weight and then heated to 150 ° C for 4 minutes. The fabric was tested for hydrophobicity by means of the AATCC 22 spray test and achieved a classification of 70. With respect to oil resistance, it achieved a classification of 6 with the AATCC 118 test.

Test of flame retardant properties: The protection provided by the fabric was tested in the lines of the Assessment of the Ignitability of Upholstered Seatin by Smolderin and Flaming Ignition Sources, British Standards BS 582: 1990, section 3, copy 5 or copy 7. For this Finally, the fabric was spread on a block of flexible, commercial polyurethane foam, without flame retardants (approximately 95% by weight of polyol, 50 parts by weight of methylene diisocyanate, 5 parts by weight of water and catalyst) and exposed to an ignition source as mentioned in the copy 5. The foam was not burned while the ignition source burned and disappeared (approximately 8 to 10 minutes), neither were slow burning and flameless effects observed. The same test was repeated without the fabric of this invention. The polyurethane foam burned spontaneously and was consumed completely by the flames. In another test, the ignition source was extinguished with water after 30 seconds. A subsequent examination of the polyurethane foam revealed no trace of water.

Example 2: The test fabric used was a fabric composed of a yarn with a content of 60% by weight of melamine resin fibers and 40% by weight of p-aramid fibers. In addition, the fabric was coated on both sides with a polyester film aluminized in a high vacuum. The fabric thus obtained had a basis weight of 725 g / m.

Flame retardant effect test: The fabric of this invention was spread on a block of flexible polyurethane foam as described in example 1, and was then exposed to an ignition source as mentioned in copy 7. The foam was not burned even after prolonged exposure to the ignition source; there were no slow burning and flameless effects. The test was repeated, except that 60 seconds later the source of ignition was extinguished with foam from a commercial fire extinguisher. Fire extinguishing foam did not pass through the fabric. It was found that the polyurethane foam did not contain any trace of fire action or moisture after extinction.

Example 3: A block of polyurethane foam was covered with a woven m-aramid felt with a basis weight of 200 g / m2 as described in Example 1, and then exposed to an ignition source in accordance with the copy 7. After 30 seconds, the ignition source was extinguished with water. The felt moistened and the foam showed too many traces of water.

Claims (10)

1. CLAIMS A fire-retardant fabric containing, based on the total weight of the fabric, (a) from 4.9 to 95% by weight of melamine resin fibers, (b) from 0 to 90.1% by weight of fire-retardant fibers selected from the group it consists of aramid fibers, carbon fibers, glass fibers, flame retardant wool and flame retardant viscose, and (c) from 0 to 20% by weight of fillers, furthermore it contains, (d) from 4.9 to 95% by weight of normal flammable fibers and (e) from 0.1 to 20% by weight of at least one finish resistant to heat, oil, impurities and / or moisture comprising at least one metallic coating on one side or on both sides.
2. The fabric as recited in claim 1, wherein the normal flammable fibers are selected from the group consisting of wool, cotton, polyamide fibers, polyester fibers and viscose.
3. The fabric as recited in claim 1 or 2 wherein the metal coating comprises aluminum as the main constituent.
4. The fabric as mentioned in any of the preceding claims, contains a water repellent as a finish.
5. The fabric as mentioned in any of the preceding claims, which contains an oil repellent as a finish.
6. The fabric as mentioned in any of the preceding claims, wherein the melamine resin fibers are obtained by condensation of a mixture which includes as essential components: (A) from 90 to 100% of a mixture consisting essentially of: (A) a) from 30 to 100 mol% of melamine, and (b) from 0 to 70 mol% of a substituted melamine of the general formula I wherein X1, X2 and X3 each are selected from the group consisting of -NH2, -NHR1 and -NRXR2, and X1, X2 and X3 not all must be -NH2, and R1 and R2 are selected from the group consisting of hydroxyalkyl of C2-C20, C2-C4 hydroxyalkyl (oxa C2-C4 alkyl) n, wherein n is 1 to 5, and C2-C12 aminoalkyl, or mixtures of melamine I, and (B) of O to 10 mol%, based on (A) and (B), of phenols which are substituted or unsubstituted by radicals selected from the group consisting of C-C9 alkyl and hydroxyl, C3-C4 alkanes substituted by two or three phenol groups, di (hydroxyphenyl) sulfones or mixtures of these phenols, with formaldehyde or compounds that provide formaldehyde in a molar ratio of melamines to formaldehyde within the range 1: 1.15 to 1: 4.5.
7. 7. The fabric as mentioned in any of the preceding claims, comprises, as constituent b), aramid fibers obtainable by polycondensation of iso- or terephthalic acid with a meta- or para-phenylenediamine.
8. 8. A blanket or fire safety clothing manufactured using a fabric as claimed in any one of claims 1 to 7.
9. 9. The use of fire safety blankets as mentioned in claim 8 for extinguishing fires and objects in fire. combustion.
10. 10. A method of protecting an object against fire, heat, combustion products and / or extinguishers, comprising the use of a fire safety blanket as mentioned in claim 8, to cover the object to be protected .