公开(公告)号：US20230128870A1

公开(公告)日：2023-04-27

申请号：US17907430

申请日：2021-03-26

Applicant: Dow Global Technologies LLC

Inventor： Robert D.J. Froese ,  Keran Lu ,  Rachel E.M. Brooner ,  Jianbo Hou ,  Jerzy Klosin ,  Daniel J. Arriola

IPC: C08F210/18

Abstract: The disclosure are directed to a process for polymerizing ethylene-based polymers. The process includes polymerizing ethylene and optionally one or more (C3-C14)α-olefin monomer, and at least one diene, in the presence of at least one multi-chain catalyst and at least one single-chain catalyst. The process may include a solvent. The multi-chain catalyst in the process includes a plurality of polymerization sites. Long-chain branched polymers are synthesized by connecting the two polymer chains of the multi-chain catalyst with the diene, the joining of the two polymer chains being performed in a concerted manner during the polymerization. The ethylene-based polymers are produced and include at least two molecular weight polymer fractions. The multi-chain catalyst produces the high molecular weight fraction, which is the long-chain branched polymer.

公开(公告)号：US20210363334A1

公开(公告)日：2021-11-25

申请号：US16958895

申请日：2019-08-26

Applicant: Dow Global Technologies LLC

Inventor： Scott T. Matteucci ,  Jeffrey E. Bonekamp ,  Arkady L. Krasovskiy ,  Kefu Sun ,  Keran Lu ,  Ronald Wevers

IPC: C08L23/06 ,  A61L15/46 ,  A61L15/18 ,  A61L15/24 ,  D01F6/04 ,  D01F1/10

Abstract: The present disclosure provides a fiber and fabrics made therefrom. In an embodiment, a fiber is provided and includes an odor control composition. The odor control composition includes (A) from 85 wt % to 99.5 wt % of an olefin-based polymer and (B) from 15 wt % to 0.5 wt % of an odor suppressant. The odor suppressant includes: (i) an ionomer, (ii) particles of zinc oxide, and (iii) particles of copper oxide.

公开(公告)号：US11161091B2

公开(公告)日：2021-11-02

申请号：US16608985

申请日：2019-02-22

Applicant: Dow Global Technologies LLC ,  Rohm and Haas Company

Inventor： Arkady L. Krasovskiy ,  Kefu Sun ,  Keran Lu ,  Scott T. Matteucci ,  Alexander Williamson ,  Jose Eduardo Ruiz ,  Harpreet Singh ,  Michelle Gallagher ,  Jeffrey E. Bonekamp

IPC: B01J20/06 ,  A61L9/014 ,  B01J20/26 ,  B01J20/28 ,  B01J20/30

Abstract: The present disclosure provides a composition. In an embodiment, the composition includes (A) from 85 wt % to 99 wt % of an olefin-based polymer and (B) from 15 wt % to 1 wt % of an odor suppressant. The odor suppressant is a blend of (i) particles of zinc oxide, and (ii) zinc ionomer. The zinc oxide particles have a D50 particle size from 100 nm to 3000 nm, a surface area from 1 m2/g to 9 m2/g, and a porosity less than 0.020 m3/g. The composition has a methyl mercaptan odor suppression value of less than 70 at 3 days as measured in accordance with ASTM D5504-12.