Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Woven fabric – Including a free metal or alloy constituent
Patent
1997-05-12
1999-12-21
McCamish, Marion
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Woven fabric
Including a free metal or alloy constituent
428378, 428379, 428389, 442136, 442181, B32B 502
Patent
active
060048921
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to the use of melamine resin fibers for manufacturing fire-safety blankets.
The present invention further relates to fire-safety blankets comprising group consisting of glass fibers, flame-retardant wool, flame-retardant viscose and aramid fibers, and fires and burning objects, a method of protecting objects from fire, and the use of fire-safety blankets comprising melamine resin fibers for extinguishing fires and burning objects and for protecting objects from fire.
Fire-safety blankets based on glass fibers are known. The disadvantage to the use of glass fibers is that glass fibers are brittle and, since they are fusible, can burn through in the event of a fire.
Also known are fire-safety blankets based on aramids. Such blankets have the disadvantage of a very high price.
It is an object of the present invention to provide fire-safety blankets which are inexpensive and not brittle and do not melt in the event of a fire.
We have found that this object is achieved by using melamine resin fibers for manufacturing fire-safety blankets.
We have also found a process for manufacturing fire-safety blankets, a method of extinguishing fires and burning objects, a method of protecting objects from fire, a method of using fire-safety blankets comprising melamine resin fibers for extinguishing fires and burning objects, and also a method of using fire-safety blankets comprising melamine resin fibers for protecting objects from fire.
The melamine resin fibers 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. Particularly preferred melamine resin fibers include as monomer building 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, mol % of melamine and from 0 to 70, preferably from 1 to 50, particularly preferably from 5 to 15, mol % of a substituted melamine I or mixtures of substituted melamines I.
As further monomer building block (B), the particularly preferred melamine resin fibers include from 0 to 10, preferably from 0.1 to 2, mol %, based on the total number of moles of monomer building blocks (A) and (B), of a phenol or a mixture of phenols.
The particularly preferred melamine resin fibers are customarily obtainable by reacting components (A) and (B) with formaldehyde or formaldehyde-supplying compounds in a molar ratio of melamines to formaldehyde within the range from 1:1.15 to 1:4.5, preferably from 1:1.8 to 1:3.0, and subsequent spinning.
Suitable substituted melamines of the general formula I ##STR1## are those in which X.sup.1, X.sup.2 and X.sup.3 are each selected from the group consisting of --NH.sub.2, --NHR.sup.1 and --NR.sup.1 R.sup.2, although X.sup.1, X.sup.2 and X.sup.3 must not all be --NH.sub.2, and R.sup.1 and R.sup.2 are each selected from the group consisting of hydroxy-C.sub.2 -C.sub.10 -alkyl, hydroxy-C.sub.2 -C.sub.4 -alkyl-(oxa-C.sub.2 -C.sub.4 -alkyl).sub.n, where n is from 1 to 5, and amino-C.sub.2 -C.sub.12 -alkyl.
Hydroxy-C.sub.2 -C.sub.10 -alkyl is preferably hydroxy-C.sub.2 -C.sub.6 -alkyl such as 2-hydroxyethyl, 3-hydroxy-n-propyl, 2-hydroxyisopropyl, 4-hydroxy-n-butyl, 5-hydroxy-n-pentyl, 6-hydroxy-n-hexyl, 3-hydroxy-2,2-dimethylpropyl, preferably hydroxy-C.sub.2 -C.sub.4 -alkyl such as 2-hydroxyethyl, 3-hydroxy-n-propyl, 2-hydroxyisopropyl and 4-hydroxy-n-butyl, particularly preferably 2-hydroxyethyl or 2-hydroxyisopropyl.
Hydroxy-C.sub.2 -C.sub.4 -alkyl- (oxa-C.sub.2 -C.sub.4 -alkyl ).sub.n preferably has n from 1 to 4, particularly preferably n=1 or 2, such as 5-hydroxy-3-oxa-pentyl, 5-hydroxy-3-oxa-2,5-dimethylpentyl, 5-hydroxy-3-oxa-1,4-dimethylpentyl, 5-hydroxy-3-oxa-1,2,4,5-tetramethylpentyl, 8-hydroxy-3,6-dioxaoctyl.
Amino-C.sub.2 -C.sub.12 -alkyl is preferably amino-C.sub.2 -C.sub.8 -alkyl such as 2-aminoethyl, 3-aminopropyl, 4-aminobutyl, 5-aminopentyl, 6-aminohexyl, 7-aminoheptyl and also 8-aminooctyl, particularly preferably 2-aminoethyl and 6-aminohexyl, very particularly pre
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Guenther Erhard
Reuther Wolfgang
BASF - Aktiengesellschaft
McCamish Marion
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