Atlantic Richfield Company

Mach I, Inc.

Robert Coleman Taylor

Bernard M Kosowski

The invention relates to melt cast explosives, propellants or pyrotechnics which contain a nitrated energetic material such as trinitrotoluene, a desensitizer such as wax or petroleum oil and an alkylated polyvinylpyrrolidone emulsifying agent.

Method and composition for melt cast explosives, propellants and

An improved gypsum dispersion frothing composition is presented comprised of a first component which is a neutralized sulfonic acid or neutralized sulfuric acid ester and a second component which is a neutralized dipropyl benzene sulfonate or a mixture of neutralized alkyl benzene sulfonates containing at least 50% neutralized dipropyl benzene sulfonate. The preferred member of the first component is neutralized alkyl benzene sulfonates having 10 to 14 alkyl carbon atoms, and the preferred second component is neutralized diisopropyl benzene sulfonate. The preferred neutralizing agents are sodium, ammonium ion, or triethanolamine. The frothing composition is preferably used at a concentration of 0.01 to 0.1 parts per 100 parts of gypsum.

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King of Prussia, PA, United States of America

Robert Coleman Taylor