| http://www.w3.org/ns/prov#value | - Examples of these materials are Mesitol PS, Mesitol NBS and INTRATEX N. Other such processes are described in U.S. Pat. No. 4,501,590, which describes treatment of the fiber with a liquor containing a silicate of the formula M2 Om SiO2 where M is an alkali metal and m is a number ranging from about 0.5 to 2, and either a sulfonated napthol-formaldehyde condensation product or a sulfonated phenol-f
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