Chemistry of inorganic compounds – Carbon or compound thereof – Oxygen containing
Patent
1973-05-02
1978-09-19
Vertiz, O. R.
Chemistry of inorganic compounds
Carbon or compound thereof
Oxygen containing
423427, C01D 714, C01D 737
Patent
active
041155254
ABSTRACT:
Conversion of sodium sesquicarbonate particles to particles of lower bulk density, as low as 180 grams per liter, with high absorption property capable of absorbing as much as 40 percent of wetting agent and with good resistance to breakage and attrition and with mild alkalinity of less than 9.9 pH to a pH approaching 9.4 without loss of particulate identity, by passing the particles through a reaction zone at a temperature of 70.degree. to 105.degree. C. and introducing a gas mixture containing 15-85 percent CO.sub.2 and 15-80 percent water vapor and maintaining the gas mixture in contact with the particles until the particles contain at least 10 percent Wegscheider's Salt and continuing the reaction to produce particles containing 20 to in excess of 95 percent Wegscheider's Salt with a water content of less than 12 percent, said particles being characterized by being in needle-form which in turn are composed of randomly oriented Wegscheider's Salt micro needles.
REFERENCES:
patent: 1503481 (1924-08-01), Cocksedge
patent: 1583661 (1926-05-01), Cocksedge
patent: 1583662 (1926-05-01), Sundstrom et al.
patent: 3235329 (1966-02-01), Gancy
patent: 3485578 (1969-12-01), Gould
Gancy Alan B.
Poncha Rustom P.
Allied Chemical Corporation
Rooney Gerard P.
Stewart Anthony J.
Straub Gary P.
Vertiz O. R.
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