EXAMPLE 3
A mixer, equipped with an electric mixer that has three prop-style mixing blades in series on a central shaft is used to produce a composition in accordance with the present disclosure. The tank itself is a stainless-steel cone-bottom tank with a 33 degree slope with a set of four baffles to allow for turbulent laminar flow.
30.99% w/w of dimethyl sulfoxide and 20% w/w of styrene-maleic anhydride copolymer are added to the tank, heated to 160° F., and mixed for one hour or until dissolved. 0.01% FD&C Blue #1, 17% dicyandiamide, and 15% monoethanolamine (MEA) are then added, and mixing continued for another hour or until dissolved. The resulting solution is allowed to cool to 100° F., and then 17% N-(N-butyl) Thiophosphoric Triamide (NBPT) is added with mixing for 45 minutes or until dissolved. The resulting solution is passed through a 5 micron filter, and samples are taken from both the top and the bottom of the reactor for testing. The resulting solution is blue and has a sulfur-like odor.
