The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2022
Filed:
Jun. 27, 2019
Dow Global Technologies Llc, Midland, MI (US);
Zhe Jia, Lake Jackson, TX (US);
John B. Cuthbert, Midland, MI (US);
David L. Malotky, Midland, MI (US);
Stacey A. Saba, Midland, MI (US);
Bruce D. Hook, Lake Jackson, TX (US);
Nathan Wilmot, Lake Jackson, TX (US);
Daniel L. Dermody, Midland, MI (US);
DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US);
Abstract
A continuous process for producing a polyurea concentrate or powder. The process includes combing at least one amine and an isocyanate in the presence of a liquid diluent or a base oil in a rotor stator mixer. The concentrate comprises a polyurea in a base oil wherein the concentration of from about 20 weight percent to about 50, or 40 or 35 or 30 weight percent of polyurea based on total weight of grease thickener. The powder has particle size of 2 to 400 microns. This concentrate or powder can then be formulated by grease manufacturers to the desired final properties without the need for handling of the isocyanate and amine raw materials.