Wet blanket

Abstract

A wet blanket obtained by impregnating a blanket including bio-soluble inorganic fibers with a colloidal silica liquid. A cured blanket obtained by curing the wet blanket.

1 . A wet blanket obtained by impregnating a blanket comprising bio-soluble inorganic fibers with a colloidal silica liquid. 
     
     
         2 . The wet blanket according to  claim 1  wherein the colloidal silica is acidic cationic colloidal silica. 
     
     
         3 . The wet blanket according to  claim 1  wherein the colloidal silica is acidic anionic colloidal silica. 
     
     
         4 . The wet blanket according to  claim 2  wherein the colloidal silica liquid has a pH of about 2 to about 6. 
     
     
         5 . The wet blanket according to  claim 3  wherein the colloidal silica liquid has a pH of about 2 to about 6. 
     
     
         6 . The wet blanket according to  claim 1  wherein the colloidal silica is alkaline anionic colloidal silica. 
     
     
         7 . The wet blanket according to  claim 6  wherein the colloidal silica liquid has a pH of about 8 to about 11. 
     
     
         8 . The wet blanket according to  claim 1  wherein the bio-soluble inorganic fibers have the following composition:
 Total of SiO 2 , ZrO 2 , Al 2 O 3  and TiO 2 : about 50 wt % to about 82 wt % 
 Total of alkali metal oxides and alkaline earth metal oxides: about 18 wt % to about 50 wt %. 
 
     
     
         9 . The wet blanket according to  claim 1  wherein the bio-soluble inorganic fibers have the following composition:
 SiO 2 : about 50 wt % to about 82 wt % 
 Total of CaO and MgO: about 10 wt % to about 43 wt %. 
 
     
     
         10 . The wet blanket according to  claim 1  wherein the bio-soluble inorganic fibers comprise about 66 wt % to about 82 wt % of SiO 2 , about 10 wt % to about 33 wt % of CaO, about 1 wt % or less of MgO and about less than 3 wt % of Al 2 O 3 . 
     
     
         11 . The wet blanket according to  claim 1  wherein the bio-soluble inorganic fibers comprise about 66 wt % to about 82 wt % of SiO 2 , about 1 wt % to about 9 wt % of CaO, about 10 wt % to about 30 wt % of MgO and less than 3 wt % of Al 2 O 3 . 
     
     
         12 . The wet blanket according to  claim 1  which comprises the colloidal silica in an amount of about 10 parts by weight to about 200 parts by weight in terms of solid matter relative to 100 parts by weight of the bio-soluble inorganic fibers. 
     
     
         13 . The wet blanket according to  claim 1  wherein the solvent content is about 15 wt % to about 75 wt %. 
     
     
         14 . A cured blanket obtained by curing the wet blanket according to  claim 1 .