1 Extreme-pressure chemical additives for use in tapping oils, machining oils, cutting oils, and metalworking fluids; chemical additives, namely, lubricating and corrosion-inhibiting additives; lubricating and corrosion-inhibiting additives for use in the manufacture of metalworking coolants, oil-absorbing synthetic fluids, oil-rejecting synthetic fluids, synthetic rust preventatives, rust inhibitors, and corrosion-inhibition packages for synthetic and semi-synthetic fluids