公开(公告)号：US12134213B2

公开(公告)日：2024-11-05

申请号：US16982357

申请日：2019-03-15

Applicant: Dow Global Technologies LLC

Inventor： Russell T. Cooper ,  Kumar N. Sanketh ,  Yi Fan ,  Matthew Bishop ,  Craig F. Gorin ,  Daniel L Dermody

IPC: B29C41/00 ,  B29C41/06 ,  C08L23/08 ,  B29K23/00 ,  B29K105/00

Abstract: The present disclosure provides a process. The process includes providing a blend containing (A) a first powder including (i) a polyolefin having a density from 0.860 g/cc to 0.910 g/cc, and a melt index from 1.5 g/10 min to 1,000 g/10 min; (ii) from 1 wt % to 15 wt % of a dispersant selected from an acrylic dispersant, a poloxamer, and combinations thereof; and (iii) optionally, a polyolefin wax, the first powder having a mean volume average particle size from 1 μm to 300 μm; and (B) a second powder including an ethylene/α-olefin copolymer having (i) a density from 0.920 g/cc to 0.955 g/cc; and (ii) a melt index from 1.0 g/10 min to 15 g/10 min, the second powder having a mean volume average particle size from 325 μm to 4,000 μm; and rotational molding the blend to form a rotational molded article.

公开(公告)号：US20230407067A1

公开(公告)日：2023-12-21

申请号：US18251005

申请日：2021-12-16

Applicant: Dow Global Technologies LLC

Inventor： Keran Lu ,  Russell T. Cooper ,  Mubashir Qamar Ansari ,  Fengyi Zhang

IPC: C08L23/08 ,  C08L23/06 ,  B29C45/00

CPC classification number: C08L23/0815 ,  C08L23/06 ,  B29C45/0001 ,  C08L2205/025 ,  C08L2205/06 ,  B29K2023/0658

Abstract: A polyethylene composition comprising suitable for use in injection molding, the polyethylene composition comprising: from 2 wt. % to 25 wt. % of a high molecular weight component consisting of an ethylene/alpha-olefin copolymer, wherein the high molecular weight component has a density of from 0.910 g/cc to 0.971 g/cc, a melt index (12.16) of greater than 0.5 g/10 min to less than 1.5 g/10 min, a molecular weight distribution (Mw/Mn) of 6.0 to 20.0; from 75 wt. % to 98 wt. % a low molecular weight component consisting of an ethylene homopolymer or an ethylene/alpha-olefin copolymer, wherein the ethylene homopolymer or an and a molecular weight distribution (Mw/Mn) of less than 6.0; wherein the polyethylene composition has a shrinkage anisotropy that is less than the shrinkage anisotropy of the low molecular weight component.

公开(公告)号：US20210031414A1

公开(公告)日：2021-02-04

申请号：US16982357

申请日：2019-03-15

Applicant: Dow Global Technologies LLC

Inventor： Russell T. Cooper ,  Kumar N. Sanketh ,  Yi Fan ,  Matthew Bishop ,  Craig F. Gorin ,  Daniel L. Dermody

IPC: B29C41/00 ,  C08L23/08 ,  B29C41/06 ,  B29K105/00 ,  B29K23/00

Abstract: The present disclosure provides a process. The process includes providing a blend containing (A) a first powder including (i) a polyolefin having a density from 0.860 g/cc to 0.910 g/cc, and a melt index from 1.5 g/10 min to 1,000 g/10 min; (ii) from 1 wt % to 15 wt % of a dispersant selected from an acrylic dispersant, a poloxamer, and combinations thereof; and (iii) optionally, a polyolefin wax, the first powder having a mean volume average particle size from 1 μm to 300 μm; and (B) a second powder including an ethylene/α-olefin copolymer having (i) a density from 0.920 g/cc to 0.955 g/cc; and (ii) a melt index from 1.0 g/10 min to 15 g/10 min, the second powder having a mean volume average particle size from 325 μm to 4,000 μm; and rotational molding the blend to form a rotational molded article.