Silica yarn for textile with high thermal resistance
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United States of America Patent
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Jan 11, 2005
Grant Date -
Nov 25, 2004
app pub date -
Jan 5, 2004
filing date -
Jul 4, 2001
priority date (Note) -
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Abstract
The invention relates to a silica yarn and to woven or nonwoven fabrics produced from said yarn, which comprises 30 to 1500 ppm by weight of aluminum and 10 to 200 ppm by weight of titanium in oxidized form, the sum of the mass of the chemical elements different from Si and O being less than 5000 ppm by weight, the following elements being absent or present in a very small quantity: boron, sodium, calcium, potassium and lithium. The fabrics comprising this silica yarn have an excellent high-temperature withstand and thus retain their flexibility for a long time at above 600.degree. C. They are useful especially in uses requiring good high-temperature flexibility, such as for furnace seals.
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