知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

12 records (took 0.013 seconds)

    VESSELS FOR PROCESSING POLYMER PARTICULATES AND METHODS FOR OPERATING THE SAME
    5.
    发明公开
    VESSELS FOR PROCESSING POLYMER PARTICULATES AND METHODS FOR OPERATING THE SAME 审中-公开

    公开(公告)号：US20240246051A1

    公开(公告)日：2024-07-25

    申请号：US18693415

    申请日：2022-09-16

    Applicant: Dow Global Technologies LLC

    Inventor： Shrikant Dhodapkar ,  Yu Liu ,  Ivan A. Konstantinov

    IPC: B01J8/12 ,  B01J8/00

    CPC classification number: B01J8/125 ,  B01J8/003 ,  B01J8/0065 ,  B01J2208/00929

    Abstract: A vessel for storing and/or processing polymer particulates includes main outer walls defining an upper end, a lower end, and a main interior space, a frustum-shaped outlet region positioned below the lower end of the main outer walls, a plurality of internal frustum sections positioned within the main outer walls, where a lower portion of each internal frustum section defines a passage extending through each of the plurality of internal frustum sections, an internal member including an internal member wall defining an internal member interior space separated from the main interior space, the internal member positioned within the main outer walls and extending from the upper end to the lower end of the main outer walls, the internal member extending through each passage of the plurality of internal frustum sections, and a purge gas source in communication with the internal member inner space.

    SUBSTITUTED SILANES AS CHAIN TRANSFER AGENTS FOR POLYOLEFIN PRODUCTION
    7.
    发明申请
    SUBSTITUTED SILANES AS CHAIN TRANSFER AGENTS FOR POLYOLEFIN PRODUCTION 有权

    公开(公告)号：US20230136233A1

    公开(公告)日：2023-05-04

    申请号：US17907709

    申请日：2021-03-29

    Applicant: Dow Global Technologies LLC

    Inventor： Arkady L. Krasovskiy ,  Ivan A. Konstantinov ,  Hayley A. Brown ,  Mehmet Demirors

    IPC: C08F293/00

    Abstract: Embodiments are directed to a method of making an olefin-based polymer by free-radical polymerization in a reactor system. The method includes initiating a free-radical polymerization of an olefin-based monomer, propagating growth of the olefin-based polymer during continued free-radical polymerization of the olefin-based monomer, and adding to the reactor system a chain transfer agent that terminates the growth of the olefin-based polymer. The chain transfer agent includes a silane. Examples of suitable silanes are: triethylsilane, diethylmethylsilane, tris(trimethylsilyl)silane, n-butylsilane, dimethylphenylsilane, phenylsilane, chlorodimethylsilane, diisopropylaminosilane, 1,2-bis(dimethylsilyl) benzene, 1,3-bis(dimethylsilyl) benzene, 1,4-bis(dimethylsilyl)benzene, 1,1, 3,3-tetramethyldisiloxane, trimethylsilane, (trimethylsilyl)dimethylsilane, and bis(trimethylsilyl)methylsilane.

Patent Agency Ranking