Patents Assigned to DuPont Electronic Materials International, LLC
  • Patent number: 12234369
    Abstract: Photoresist topcoat compositions, comprising: a first polymer that is aqueous base soluble and is present in an amount of from 70 to 99 wt % based on total solids of the composition; a second polymer comprising a repeat unit of general formula (IV) and a repeat unit of general formula (V): wherein: R5 independently represents H, halogen atom, C1-C3 alkyl, or C1-C3 haloalkyl; R6 represents linear, branched or cyclic C1 to C20 fluoroalkyl; R7 represents linear, branched or cyclic C1 to C20 fluoroalkyl; L3 represents a multivalent linking group; and m is an integer of from 1 to 5; wherein the second polymer is free of non-fluorinated side chains; and wherein the second polymer is present in an amount of from 1 to 30 wt % based on total solids of the composition and a solvent. The invention finds particular applicability in the manufacture of semiconductor devices.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: February 25, 2025
    Assignee: DuPont Electronic Materials International, LLC
    Inventors: Irvinder Kaur, Chunyi Wu, Joshua A. Kaitz, Mingqi Li, Doris Kang, Xisen Hou, Cong Liu
  • Publication number: 20250051589
    Abstract: Provided herein is an organic solvent to solve silicone polymer, to coat the silicone polymer on at least a portion of the surface of an article such as needles, syringes, stoppers and medicine bottles.
    Type: Application
    Filed: December 21, 2022
    Publication date: February 13, 2025
    Applicants: DuPont Technology (Shanghai) Co., Ltd., DuPont Electronic Materials International, LLC.
    Inventors: Xiaoman Qi, Jian Lyu, Chen-Yang Shiang, Xiaogang Ma
  • Patent number: 12104061
    Abstract: A UV curable silicone composition has exceptional curability by ultraviolet irradiation.
    Type: Grant
    Filed: July 10, 2023
    Date of Patent: October 1, 2024
    Assignees: DuPont Toray Specialty Materials Kabushiki Kaisha, DuPont Electronic Materials International, LLC, DuPont Specialty Materials Korea Ltd.
    Inventors: Shunya Takeuchi, Anna Ya Ching Feng, Yutaka Oka, Jung Hye Chae