Halogen Or Carbon Bonded Directly To The Tetracyclo Ring System Patents (Class 552/288)
  • Modified conjugated diene-based polymer and method of preparing the same
    Patent number: 11787883
    Abstract: The present invention relates to a modifier represented by Formula 1, a method of preparing the same, a modified conjugated diene-based polymer having a high modification ratio which includes a modifier-derived functional group, and a method of preparing the polymer.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: October 17, 2023
    Inventors: Ji Eun Kim, Won Taeck Lim, Won Mun Choi, Dae June Joe
  • Liquid diene polymers and copolymers terminated by reaction with fused-ring polynuclear aromatic compounds
    Patent number: 5334665
    Abstract: A terminally functionalized liquid polymer is prepared by reacting a low molecular weight living diene polymer or copolymer obtained by anionic polymerization of a diene monomer or mixture of a diene monomer and a vinyl aromatic hydrocarbon monomer with a fused-ring polynuclear aromatic compound. The resultant terminally functionalized liquid diene polymers or copolymers can be utilized as dispersants for particulates such as carbon black or graphite and may also be employed as viscosity modifiers for lubricating oils or in electrorheological devices or damping devices.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: August 2, 1994
    Assignee: Bridgestone/Firestone, Inc.
    Inventors: David F. Lawson, Mark L. Stayer, Jr., Thomas A. Antkowiak