Patents by Inventor Yaokun Han

Yaokun Han has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11584896
    Abstract: A lubricant composition that comprises a hydrocarbon base oil, a polar viscosity improver; and an esterified polyalkylene glycol: R1[O(R2O)n(R3O)m(C?O)R4]p, wherein R1 is 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; R2O is an oxypropylene moiety derived from 1, 2-propylene oxide; R3O is an oxybutylene moiety derived from butylene oxide, wherein R2O and R3O are in a block or a random distribution; R4 is 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.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: February 21, 2023
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Yaokun Han, Martin R. Greaves, Yong Zhao, Cheng Shen, Tao Wang, Jieying Chen
  • Patent number: 11566200
    Abstract: The present disclosure provides A lubricant composition comprises an antioxidant; and an esterified polyalkylene glycol: R1[O(R2O)n(R3O)m(C?O)R4]p, wherein R1 is 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; R2O is an oxypropylene moiety derived from 1,2-propylene oxide; R3O is an oxybutylene moiety derived from butylene oxide, wherein R2O and R3O are in a block or a random distribution; R4 is 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, wherein the antioxidant is present in an amount by weight of at least 0.5% to 20% based upon the weight of the antioxidant and the esterified polyalkylene glycol and the antioxidant is soluble in the esterified polyalkylene glycol in an amount of at least 0.5% by weight.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: January 31, 2023
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Yaokun Han, Martin R. Greaves, Yong Zhao, Cheng Shen, Tao Wang, Jieying Chen
  • Publication number: 20220306961
    Abstract: Embodiments of the present disclosure are directed processes to produce a low-color esterified oil soluble polyalkylene glycol, the process comprising forming a reaction mixture including a low viscosity oil soluble polyalkylene glycol and an excess amount of valeric acid, where the reaction mixture is formed in the presence of a catalytic amount of ortho-phosphoric acid catalyst to yield an organic phase including the low-color esterified oil soluble polyalkylene glycol.
    Type: Application
    Filed: August 8, 2019
    Publication date: September 29, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Edward Daugs, Martin R. Greaves, Yaokun Han
  • Patent number: 11396638
    Abstract: The present disclosure provides for a lubricant formulation and a method of forming the lubricant formulation for use in an internal combustion engine. The lubricant formulation includes a base oil and an esterified oil-soluble polyalkylene glycol (E-OSP) of Formula (I): R1 [O(R2O)n(R3O)m(C?O)R4]p wherein R1 is 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; R2O is an oxypropylene moiety derived from 1, 2-propylene oxide; R3O is an oxybutylene moiety derived from butylene oxide, wherein R2O and R3O are in a block or a random distribution; R4 is 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.
    Type: Grant
    Filed: December 25, 2017
    Date of Patent: July 26, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Martin R. Greaves, Yaokun Han, Yong Zhao
  • Publication number: 20220127542
    Abstract: The present disclosure provides A lubricant composition comprises an antioxidant; and an esterified polyalkylene glycol: R1[O(R2O)n(R3O)m(C?O)R4]p, wherein R1 is 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; R2O is an oxypropylene moiety derived from 1,2-propylene oxide; R3O is an oxybutylene moiety derived from butylene oxide, wherein R2O and R3O are in a block or a random distribution; R4 is 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, wherein the antioxidant is present in an amount by weight of at least 0.5% to 20% based upon the weight of the antioxidant and the esterified polyalkylene glycol and the antioxidant is soluble in the esterified polyalkylene glycol in an amount of at least 0.5% by weight.
    Type: Application
    Filed: March 5, 2019
    Publication date: April 28, 2022
    Inventors: Yaokun Han, Martin R. Greaves, Yong Zhao, Cheng Shen, Tao Wang, Jieying Chen
  • Publication number: 20220119728
    Abstract: A lubricant composition that comprises a hydrocarbon base oil, a polar viscosity improver; and an esterified polyalkylene glycol: R1[O(R2O)n(R3O)m(C?O)R4]p, wherein R1 is 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; R2O is an oxypropylene moiety derived from 1, 2-propylene oxide; R3O is an oxybutylene moiety derived from butylene oxide, wherein R2O and R3O are in a block or a random distribution; R4 is 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.
    Type: Application
    Filed: March 5, 2019
    Publication date: April 21, 2022
    Inventors: Yaokun Han, Martin R. Greaves, Yong Zhao, Cheng Shen, Tao Wang, Jieying Chen
  • Patent number: 11279897
    Abstract: Embodiments of the present disclosure are directed towards esterified oil soluble polyalkylene glycols of Formula (I): R1[O(R2O)n(R3O)m(C?O)R4]p, where R1 is 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; R2O is an oxypropylene moiety derived from 1, 2-propylene oxide; R3O is an oxybutylene moiety derived from butylene oxide, where R2O and R3O are in a block or a random distribution; R4 is a linear alkyl with 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.
    Type: Grant
    Filed: December 25, 2017
    Date of Patent: March 22, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Yaokun Han, Cheng Shen, Martin R. Greaves, Yong Zhao
  • Publication number: 20200332217
    Abstract: The present disclosure provides for a lubricant formulation and a method of forming the lubricant formulation for use in an internal combustion engine. The lubricant formulation includes a base oil and an esterified oil-soluble polyalkylene glycol (E-OSP) of Formula (I): R1 [O(R2O)n(R3O)m(C?O)R4]p wherein R1 is a linear alkyi having 1 to 18 carbon atoms, a branched alkyl having 4 to 18 carbon atoms or an aryl with 6 to 30 carbon atoms; R2O is an oxypropylene moiety derived from 1, 2-propylene oxide; R3O is an oxvbutvlene moiety derived from butylene oxide, wherein R2O and R3O are in a block or a random distribution; R4 is a linear alkyl with 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.
    Type: Application
    Filed: December 25, 2017
    Publication date: October 22, 2020
    Applicant: Dow Global Technologies LLC
    Inventors: Martin R. Greaves, Yaokun Han, Yong Zhao
  • Publication number: 20200318024
    Abstract: Embodiments of the present disclosure are directed towards esterified oil soluble polyalkylene glycols of Formula (I): R1[O(R2O)n(R3O)n(C?O)R4]p, where R1 is 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; R2O is an oxypropylene moiety derived from 1, 2-propylene oxide; R3O is an oxybutylene moiety derived from butylene oxide, where R2O and R3O are in a block or a random distribution; R4 is a linear alkyl with to 18 carbon atoms, N 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.
    Type: Application
    Filed: December 25, 2017
    Publication date: October 8, 2020
    Applicant: Dow Global Technologies LLC
    Inventors: Yaokun Han, Cheng Shen, Martin R. Greaves, Yong Zhao