Method of producing aminated silica compounds

Details Method of producing aminated silica compounds Method of producing aminated silica compounds

1976-08-13

1978-10-24

Garvin, Patrick

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106288B, 106288Q, 106309, 252428, C09C 128

Patent

active

041219465

ABSTRACT:
A method of producing aminated silica compounds, characterized in that starting silica is heated at a temperature of 200.degree.-500.degree. C for several hours in the absence of oxygen and moisture, then cooled down to a temperature of 100.degree.-250.degree. C and treated at this temperature with an amino alcohol.
The resulting product is characterized in containing grafted amino groups, their concentration being much higher than that of free hydroxyl groups on the surface of the starting silicas. This feature enables to improve the properties of aminated silica compounds and, particularly, to increase adsorption capacity and activity thereof when said compounds are used as polymer fillers.

REFERENCES:
patent: 2578605 (1951-12-01), Sears et al.
patent: 2865882 (1958-12-01), Strassburg
patent: 3431231 (1969-03-01), Darcy et al.
patent: 3837878 (1974-09-01), Beers
patent: 3948676 (1976-03-01), Laufer
I. E. Neimak et al., Dokl. AN SSSR, Synthesis of Specific Silica Gels by Modifying The Surface thereof, 132, 1960, pp. 1356.
A. A. Chuiko et al., Dokl AN SSSR, Investigation of Interaction Between Monoethanolamine and Silica Surface by II Spectroscopy, vol. 186, pp. 385-388, 1969.

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