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:
Feb. 21, 2023
Filed:
Mar. 05, 2019
Dow Global Technologies Llc, Midland, MI (US);
Yaokun Han, Shanghai, CN;
Martin R. Greaves, Baar, CH;
Yong Zhao, Shanghai, CN;
Cheng Shen, Shanghai, CN;
Tao Wang, Shanghai, CN;
Jieying Chen, Shanghai, CN;
DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US);
Abstract
A lubricant composition that comprises a hydrocarbon base oil, a polar viscosity improver; and an esterified polyalkylene glycol: R[O(RO)(RO)(C═O)R], wherein Ris a linear alkyl having 1 to 18 carbon atoms, a branched alkyl having 4 to 18 carbon atoms or an aryl with 6 to 30 carbon atoms; RO is an oxypropylene moiety derived from 1, 2-propylene oxide; RO is an oxybutylene moiety derived from butylene oxide, wherein RO and RO are in a block or a random distribution; Ris a linear alkyl with 1 to 18 carbon atoms, a branched alkyl with 4 to 18 carbon atoms or an aryl with 6 to 18 carbon atoms; n and m are each independently integers ranging from 0 to 20 wherein n+m is greater than 0, and p is an integer from 1 to 4. The lubricant composition may have a viscosity index of at least 150, a kinematic viscosity at 100° C. from 2 to 5 centistokes and a kinematic viscosity at −20° C. of at most 600 centistokes.