Patent ID: 8889604
Filing Date: 2014-11-18
Classification: C10M,C10N

Abstract:
1. A method for preparing a grease comprising: a) preparing a first mixture comprised of a first lubricating base oil and at least one amine, and a second mixture comprised of a second lubricating base oil and at least one isocyanate; b) mixing the first mixture and the second mixture together in a mixing zone under high pressure and high flow rate impingement conditions to thereby have the at least one amine and at least one isocyanate react and have a reaction product dispersed throughout the first and the second lubricating base oils, with each of the first and the second mixture being introduced into a mixing zone through an orifice less than 0.030 inch (0.0762 centimeter) in diameter and with the reaction and dispersion occurring nearly simultaneously to create a grease product; and c) recovering the grease product directly from the mixing zone, wherein the grease product exhibits a dropping point of greater than 500° F. (260° C.) of and a change in penetration value from P(60) to P(100,000) of less than 100 penetration points.