. . "A nonflammable binder composition which comprises (A) 30 to 80 weight percent of water-soluble silicate represented by the formula: M2 O.xSiO2 wherein M is an alkali metal or a nitrogen-containing basic group selected from the group consisting of N(CH2 OH)4, N(C2 H4 OH)4, N(C2 H4 OH)3 and C(NH3)2 NH, and x is a positive number not less than 0.5, and (B) 70 to 20 weight percent of vinyl polymer emu" . . .