Flotation reagents made by DuPont are D.P. 243, a 50% aqueous paste of
lorolamine (lorol being a mixture of primary straight-chain alcohols) and
D.P.Q., lauryl trimethyl ammonium bromide. Others include D.P.Q.B.,
D.P.C., D.P.N., and D.P.L.A. Pryor, 3
Source:
Dictionary of Mining, Mineral, and Related Terms