Patents by Inventor Danielle G. Singleton

Danielle G. Singleton 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: 11919981
    Abstract: This invention relates to mono cyclopentadienyl pyridyl hydroxyl amine catalyst compounds represented by Formula I(a) or I(b): wherein: M is a group 3-12 metal; R1 is a hydrocarbyl group or a silyl group; R2, R3, R4, R5, R6, R7, R8, R9, and R10 are independently selected from the group consisting of hydrogen, hydrocarbyl, alkoxy, silyl, amino, aryloxy, halogen and phosphino, wherein any two adjacent R groups may be joined to form a saturated or unsaturated single or multicyclic hydrocarbyl ring or heterocyclic ring; and each X1 and X2 is independently an anionic leaving group or X1 and X2 may be joined together to form a dianionic group.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: March 5, 2024
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Alex E. Carpenter, Danielle G. Singleton
  • Patent number: 11814460
    Abstract: The present disclosure provides pyridyl hydroxyl amine catalyst compounds and systems containing the compounds. The present disclosure is also directed to polymerization processes to produce polyolefin polymers from catalyst systems including one or more olefin polymerization catalysts, at least one activator, and an optional support.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: November 14, 2023
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Alex E. Carpenter, Danielle G. Singleton, Tzu-Pin Lin
  • Publication number: 20230250200
    Abstract: The present disclosure relates to iron-containing compounds including a 2,6-diimino(heteroaryl) ligand useful for producing substituted-cyclo-alkanes, such as vinyl cyclobutanes. The present disclosure provides new and improved iron-containing catalysts with enhanced solubility in hydrophobic (nonpolar) solvents.
    Type: Application
    Filed: January 19, 2023
    Publication date: August 10, 2023
    Applicants: EXXONMOBIL CHEMICAL PATENTS INC., THE TRUSTEES OF PRINCETON UNIVERSITY
    Inventors: Irene C. Cai, Gursu Culcu, Tzu-Pin Lin, Jo Ann M. Canich, Frank N. Raushel, Alex E. Carpenter, Hua Zhou, Danielle G. Singleton, Paul J. Chirik, Megan Mohadjer Beromi, Carli Kovel
  • Publication number: 20230159424
    Abstract: This invention relates to a composition comprising a compound having a formula of M2(CO)m(PF3)n, wherein M is a group 9 metal (such as cobalt), m is 1, 2, 3, 4, 5, 6, or 7, n is 1, 2, 3, 4, 5, 6, or 7, and the sum of m and n is 8, that may be used as a hydroformylation pre¬catalyst for converting (such as hydroformylating) olefinic feeds, especially complex feeds comprising internal olefins and high degrees of branching.
    Type: Application
    Filed: March 25, 2021
    Publication date: May 25, 2023
    Inventors: Alex E. Carpenter, Danielle G. Singleton, Sarah A. Kheir
  • Publication number: 20220306558
    Abstract: Vinylidene olefins may undergo hydroformylation in the presence of an unmodified cobalt catalyst to form compositions comprising a mixture of alcohol molecules having a specified amount of branching. In particular, the compositions may feature a mixture comprising reduced hydroformylated reaction products of a vinylidene olefin comprising alcohol molecules represented by at least one of Structures 3-5. The mixture has an average of about 1.2 to about 2.1 branches per alcohol molecule. Ra and Rb may be the same or different and comprise a branched or unbranched alkyl group having about 6 to about 14 carbon atoms, excluding branches. Variable m is an integer ranging from 0 to a number of carbon atoms in Rb. Rb is a branched or unbranched alkyl group having m+1 carbon atoms less than Rb.
    Type: Application
    Filed: June 15, 2020
    Publication date: September 29, 2022
    Inventors: Alex E Carpenter, Sarah J Mattler, Danielle G. Singleton, Jennifer L. Rapp
  • Publication number: 20220127387
    Abstract: The present disclosure provides pyridyl hydroxyl amine catalyst compounds and systems containing the compounds. The present disclosure is also directed to polymerization processes to produce polyolefin polymers from catalyst systems including one or more olefin polymerization catalysts, at least one activator, and an optional support.
    Type: Application
    Filed: October 19, 2021
    Publication date: April 28, 2022
    Inventors: Alex E. Carpenter, Danielle G. Singleton, Tzu-Pin Lin
  • Publication number: 20220127394
    Abstract: This invention relates to mono cyclopentadienyl pyridyl hydroxyl amine catalyst compounds represented by Formula I(a) or I(b): wherein: M is a group 3-12 metal; R1 is a hydrocarbyl group or a silyl group; R2, R3, R4, R5, R6, R7, R8, R9, and R10 are independently selected from the group consisting of hydrogen, hydrocarbyl, alkoxy, silyl, amino, aryloxy, halogen and phosphino, wherein any two adjacent R groups may be joined to form a saturated or unsaturated single or multicyclic hydrocarbyl ring or heterocyclic ring; and each X1 and X2 is independently an anionic leaving group or X1 and X2 may be joined together to form a dianionic group.
    Type: Application
    Filed: October 19, 2021
    Publication date: April 28, 2022
    Inventors: Alex E. Carpenter, Danielle G. Singleton