US 12,146,114 B2
Composition and method of manufacturing and using extremely rheopectic sulfonate-based greases
J. Andrew Waynick, Lantana, TX (US); Alisha Farrington, Irving, TX (US); and Deon Copeland, McKinney, TX (US)
Assigned to NCH Corporation, Irving, TX (US)
Filed by NCH Corporation, Irving, TX (US)
Filed on Apr. 17, 2023, as Appl. No. 18/135,232.
Application 18/135,232 is a continuation of application No. 16/787,868, filed on Feb. 11, 2020, granted, now 11,661,563.
Prior Publication US 2023/0340354 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C10M 135/10 (2006.01); C10M 105/80 (2006.01); C10M 171/00 (2006.01); C10M 177/00 (2006.01); C10N 50/10 (2006.01)
CPC C10M 105/80 (2013.01) [C10M 135/10 (2013.01); C10M 171/005 (2013.01); C10M 177/00 (2013.01); C10M 2219/0463 (2013.01); C10N 2050/10 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A method for making an extremely rheopectic sulfonate-based grease, the method comprising the steps of:
adding an overbased magnesium sulfonate;
adding a facilitating acid;
adding water;
adding an overbased calcium sulfonate having amorphous calcium carbonate dispersed therein according to one of the following steps:
(A) adding all of the overbased calcium sulfonate after the adding the overbased magnesium sulfonate step and after the adding the facilitating acid step or
(B)(1) adding a first portion of the overbased calcium sulfonate (i) prior to, during, or after the adding the overbased magnesium sulfonate step and (ii) prior to the adding the facilitating acid step and (2) adding a second portion of the overbased calcium sulfonate after the adding the facilitating acid step;
converting a first mixture comprising the overbased magnesium sulfonate, the facilitating acid, at least a first portion of the water, and the overbased calcium sulfonate to a converted mixture by heating until conversion of the amorphous calcium carbonate dispersed in the overbased calcium sulfonate to a crystalline form has occurred; and
wherein the extremely rheopectic sulfonate-based grease comprises a fluid-like and pumpable consistency after the converting step and only takes on a grease-like consistency after milling or shearing.