Calcium silicate granules forming a microporous structure

Details Calcium silicate granules forming a microporous structure Calcium silicate granules forming a microporous structure

1981-06-12

1983-07-26

Konopka, P. E.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

55 74, 119 1, 210680, 210691, 210925, 252430, 252457, 423331, 424357, B01J 2022, B01J 2010, A01K 1015, C01B 3324

Patent

active

043953573

ABSTRACT:
The invention deals with calcium silicate granulates or powders with a microporous structure, which are obtained, by reacting crystalline or, if required, amorphous silicon dioxide, or materials containing the same, with calcium oxide or materials containing the same, in a CaO to SiO.sub.2 molar ratio of 0.8:1 to 1:1:1, by homogenizing the same in water together with a suitable additive and molding, autoclave setting, comminuting, drying, and grading with the further proviso that the homogenization during the reaction is carried through by dispersion of the starting materials in water by adding an anion-active surfactant, which had previously been converted in water into a microporous stable foam, obtained as absorbents and adsorbents for liquids, vapors and gases, as well as calcium silicate granulates of this type with further developing additives, which in the use for absorption of hydrophilic liquids are fatty amines, whereas in the use of the absorbent for oleophilic liquids and gases polyamide waxes, fatty amine salts or saponification resistant alkoxy silanes may be used.

REFERENCES:
patent: 2966441 (1960-12-01), Vander-Linden et al.
patent: 4034139 (1977-07-01), Mazarguil et al.
patent: 4164482 (1979-08-01), Berger et al.
patent: 4275684 (1981-06-01), Kramer et al.

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