Patents by Inventor Yue Rachel Hu

Yue Rachel Hu 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: 11518726
    Abstract: Provided is a process for the preparation of certain 1,4-bicyclo[2.2.2]octane derivatives. The new synthetic procedure involves treating 1,4-dimethylene cyclohexane with an oxidizing agent in the presence of a transition metal catalyst to afford an oxo-substituted bicyclo[2.2.2]octane species. This intermediate structure can then be further derivatized. The processes of this disclosure thus affords a novel and simplified means for the commercial production of a wide variety of bicyclo[2.2.2]octane derivatives.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: December 6, 2022
    Assignee: Eastman Chemical Company
    Inventors: Yue Rachel Hu, Robert Thomas Hembre, Gerald Charles Tustin, Zhufang Liu, Steven J. Adams
  • Patent number: 10836899
    Abstract: A semi-crystalline polyester comprising a repeat unit of the formula: wherein A is an aliphatic, aromatic, or heterocyclic group; R1 is selected from the group consisting of 1,4-butanediol residue and 1,4-cyclohexanedimethanol residue; R2 is neopentanediol residue; m is between 50 and 99 inclusive; n is between 1 and 50 inclusive; x is between 1 and 200 inclusive; and wherein said semi-crystalline polyester exhibits a minimum crystallization half-time of about 0.3 minutes or greater, or about 0.5 minutes or greater or about 0.6 minutes or greater or about 0.7 minutes or greater is described. The polyesters of the present invention may in various embodiments demonstrate one or more desirable performance characteristics and accordingly are particularly useful in applications and utilities wherein those high levels of performance for such characteristics are required. A process for forming the semi-crystalline polyester is also disclosed.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: November 17, 2020
    Assignee: Eastman Chemical Company
    Inventors: David Scott Porter, Wentao Li, Sarah Exley Goetz, Aireal Denise Pressley, Amit Vasant Desai, Yue Rachel Hu, Steven J. Adams
  • Publication number: 20200317910
    Abstract: A semi-crystalline polyester comprising a repeat unit of the formula: wherein A is an aliphatic, aromatic, or heterocyclic group; R1 is selected from the group consisting of 1,4-butanediol residue and 1,4-cyclohexanedimethanol residue; R2 is neopentanediol residue; m is between 50 and 99 inclusive; n is between 1 and 50 inclusive; x is between 1 and 200 inclusive; and wherein said semi-crystalline polyester exhibits a minimum crystallization half-time of about 0.3 minutes or greater, or about 0.5 minutes or greater or about 0.6 minutes or greater or about 0.7 minutes or greater is described. The polyesters of the present invention may in various embodiments demonstrate one or more desirable performance characteristics and accordingly are particularly useful in applications and utilities wherein those high levels of performance for such characteristics are required. A process for forming the semi-crystalline polyester is also disclosed.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 8, 2020
    Applicant: Eastman Chemical Company
    Inventors: David Scott Porter, Wentao Li, Sarah Exley Goetz, Aireal Denise Pressley, Amit Vasant Desai, Yue Rachel Hu, Steven J. Adams
  • Publication number: 20200270191
    Abstract: Provided is a process for the preparation of certain 1,4-bicyclo[2.2.2]octane derivatives. The new synthetic procedure involves treating 1,4-dimethylene cyclohexane with an oxidizing agent in the presence of a transition metal catalyst to afford an oxo-substituted bicyclo[2.2.2]octane species. This intermediate structure can then be further derivatized. The processes of this disclosure thus affords a novel and simplified means for the commercial production of a wide variety of bicyclo[2.2.2]octane derivatives.
    Type: Application
    Filed: October 10, 2018
    Publication date: August 27, 2020
    Applicant: Eastman Chemical Company
    Inventors: Yue Rachel HU, Robert Thomas HEMBRE, Gerald Charles TUSTIN, Zhufang LIU, Steven J. ADAMS
  • Publication number: 20200190318
    Abstract: A semi-crystalline polyester comprising a repeat unit of the formula: wherein A is an aliphatic, aromatic, or heterocyclic group; R1 is selected from the group consisting of 1,4-butanediol residue and 1,4-cyclohexanedimethanol residue; R2 is neopentanediol residue; m is between 50 and 99 inclusive; n is between 1 and 50 inclusive; x is between 1 and 200 inclusive; and wherein said semi-crystalline polyester exhibits a minimum crystallization half-time of about 0.3 minutes or greater, or about 0.5 minutes or greater or about 0.6 minutes or greater or about 0.7 minutes or greater is described. The polyesters of the present invention may in various embodiments demonstrate one or more desirable performance characteristics and accordingly are particularly useful in applications and utilities wherein those high levels of performance for such characteristics are required. A process for forming the semi-crystalline polyester is also disclosed.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 18, 2020
    Applicant: Eastman Chemical Company
    Inventors: David Scott Porter, Wentao Li, Sarah Exley Goetz, Aireal Denise Pressley, Amit Vasant Desai, Yue Rachel Hu, Steven J. Adams
  • Patent number: 10633315
    Abstract: Provided is a process for the preparation of certain 1,4-bicyclo[2.2.2]octane derivatives. The new synthetic procedure involves treating 1,4-dimethylene cyclohexane with an oxidizing agent in the presence of a transition metal catalyst comprising a palladium compound to afford certain oxo-substituted bicyclo[2.2.2]octane species. The process of the invention thus affords a novel and simplified means for the commercial production of a wide variety of bicyclo[2.2.2]octane derivatives.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: April 28, 2020
    Assignee: Eastman Chemical Company
    Inventors: Yue Rachel Hu, Robert Thomas Hembre, Gerald Charles Tustin, Christopher Harlan Burk
  • Publication number: 20200039906
    Abstract: Provided is a process for the preparation of certain 1,4-bicyclo[2.2.2]octane derivatives. The new synthetic procedure involves treating 1,4-dimethylene cyclohexane with an oxidizing agent in the presence of a transition metal catalyst comprising a palladium compound to afford certain oxo-substituted bicyclo[2.2.2]octane species. The process of the invention thus affords a novel and simplified means for the commercial production of a wide variety of bicyclo[2.2.2]octane derivatives.
    Type: Application
    Filed: October 11, 2017
    Publication date: February 6, 2020
    Applicant: Eastman Chemical Company
    Inventors: Yue Rachel Hu, Robert Thomas Hembre, Gerald Charles Tustin, Christopher Harlan Burk