Институт физико-органической химии и углехимии им.Л.М.Литвиненко
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FIELD: chemical technology. SUBSTANCE: the following components were added successively to the parent graphite powder: chrome anhydride solution, preliminary mixed sulfuric acid and carbamide, and finally dry neutralizing agent prepared on the basis of magnesium oxide is added. Prepared thermoexpanding graphite shows swelling coefficient 140 cm/g. EFFECT: improved method of preparing. 1 tbl
SU4907872/26A1991-02-041991-02-04Method of preparing of thermoexpanding graphite
SU1817438A1
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Process for preparing highly concentrated finely dispersed solid compositions of water insoluble to slightly soluble active compounds dispersible in an aqueous medium, containing little or no dispersing agent