Chemistry of inorganic compounds – Silicon or compound thereof – Oxygen containing
Patent
1990-06-21
1992-03-10
Chaudhuri, Olik
Chemistry of inorganic compounds
Silicon or compound thereof
Oxygen containing
423335, 424 49, C01B 3318
Patent
active
050948296
ABSTRACT:
Reinforced precipitated silica having, on a coating-free and impregnant-free basis, a surface area of from about 220 to about 340 square meters per gram, a pore diameter at the maximum of the volume pore size distribution function of from about 9 to about 20 nanometers, and a total intruded volume of from about 2.6 to about 4.4 cubic centimeters per gram, is produced by a process wherein precipitated silica is heavily reinforced using a multiplicity of precipitation and aging steps.
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Krivak Thomas G.
Okel Timothy A.
Wagner Melvin P.
Chaudhuri Olik
Horton Ken
Morris George D.
PPG Industries Inc.
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