C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/185
C01B 33/20 (2006.01) C01B 33/26 (2006.01) C04B 18/02 (2006.01) C04B 28/18 (2006.01)
Patent
CA 1117273
ABSTRACT OF THE DISCLOSURE The invention as disclosed provides a particulate silicate material having substantially a fibre- or flake-like microstructure which is suitable for use as an insulating material and as a substitute for organic fibres in paper- and board-like webs and sheets, said particulate silicate material being formed by hydro- thermally treating a slurry of pulverulent starting material at a temperature of approximately 175 to 325°C and at a pH of at least 9 in the presence of water or condensed steam, said starting material having a specific surface of at least 40 000 cm2/cm3 (measured according to Blaine) and consisting essentially of a natural or synthetic silicate material having a hardness exceeding 6 on the Moh's hardness scale and being at least one of the compounds having the general formulae Image wherein RI may be the same or different and is selected from the group consisting of Mg and Fe; and Image wherein RII may be the same or different and is selected from the group consisting of Mg, Fe, and Ca, and RIII is A1 or Fe. Said polymeric silicate material is useful as an insulating material and as a substitute for organic fibres in paper- and board-like webs and sheets.
306899
Hassler Hedvig E.b.
Kihlstedt Per G.
Odeen Kai
Advanced Mineral Research Ab
Gowling Lafleur Henderson Llp
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