公开(公告)号：US20210324289A1

公开(公告)日：2021-10-21

申请号：US16972237

申请日：2019-06-27

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Zhe JIA ,  John B. CUTHBERT ,  David L. MALOTKY ,  Stacey A. SABA ,  Bruce D. HOOK ,  Nathan WILMOT ,  Daniel L. DERMODY

IPC: C10M115/08 ,  C10M169/02 ,  C10M177/00

Abstract: A continuous process for producing a polyurea concentrate or powder. The process includes combing at least one amine and an isocayante 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

公开(公告)号：US20220267695A1

公开(公告)日：2022-08-25

申请号：US17741982

申请日：2022-05-11

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Zhe Jia ,  John B. CUTHBERT ,  David L. MALOTKY ,  Stacey A. SABA ,  Bruce D. HOOK ,  Nathan WILMOT ,  Daniel L. DERMODY

IPC: C10M115/08 ,  C08G18/09 ,  C08G18/28 ,  C08J3/09 ,  C10M169/02 ,  C10M177/00 ,  C10M119/24

Abstract: A continuous process for producing a polyurea concentrate or powder. The process includes combing at least one amine and an isocayante 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.