公开(公告)号：US20230235156A1

公开(公告)日：2023-07-27

申请号：US18007814

申请日：2021-06-04

Applicant: Dow Global Technologies LLC ,  PBBPolisur S.R.L.

Inventor： Alexander Williamson ,  Shadid Askar ,  Joel D. Wieliczko ,  Cornelis F.J. Den Doelder ,  Mridula Kapur ,  Kurt F. Hirsekorn ,  Evelyn Auyeung ,  Bo Liu ,  Maria C. Zandueta ,  John P. O'Brien ,  Stephanie M. Whited

IPC: C08L23/08 ,  C08L23/06

CPC classification number: C08L23/0815 ,  C08L23/06 ,  C08L2205/025 ,  C08L2314/02

Abstract: Embodiments are directed towards polyolefin compositions including a high molecular weight polyolefin and a low molecular weight polyolefin.

公开(公告)号：US20150299945A1

公开(公告)日：2015-10-22

申请号：US14431172

申请日：2012-10-16

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Weichao Gu ,  Ning Kang ,  Hong Liang Zhang ,  Yunfei Yan ,  Chao Zhang ,  Bo Liu

IPC: D06N3/14 ,  C09D133/08 ,  D06N3/00 ,  C09D133/12

CPC classification number: D06N3/144 ,  C09D133/08 ,  C09D133/12 ,  D06N3/0047 ,  D06N3/0061 ,  D06N3/0063 ,  D06N3/0077 ,  D06N3/10 ,  D06N3/14 ,  D06N2211/28

Abstract: Disclosed herein are synthetic leathers comprising latex, and having improved peel strength and/or improved embossability. The leathers comprising a fabric that is optionally impregnated with a polymer resin, wherein the fabric is in contact with a polymeric layer that was made from a mixture comprising a frothed polyurethane dispersion in water and latex. Methods of making these synthetic leathers, which have improved peel strength and/or improved embossability relative to non-latex containing synthetic leathers, are also disclosed.

Abstract translation: 本文公开了包含胶乳的合成革，并具有改善的剥离强度和/或改进的压花性。 皮革包括任选地用聚合物树脂浸渍的织物，其中织物与聚合物层接触，所述聚合物层由包含在水和胶乳中的起泡聚氨酯分散体的混合物制成。 还公开了制备这些合成革的方法，其相对于不含胶乳的合成皮革具有改善的剥离强度和/或改善的压花性。

公开(公告)号：US20250128463A1

公开(公告)日：2025-04-24

申请号：US18685043

申请日：2021-12-16

Applicant: Dow Global Technologies LLC

Inventor： Bo Liu ,  Feng Chen ,  Rongjuan Cong ,  Wesley R. Mariott

IPC: B29C48/21 ,  B29C31/10 ,  B29C48/00 ,  B29C48/08 ,  B29K23/00

Abstract: A multilayer film comprising at least three film layers including: (a) at least a first polyolefin film layer, wherein the first polyolefin film layer comprises a first outer film layer; (b) at least a second polyolefin film layer, wherein the second polyolefin film layer comprises a core film layer; and (c) at least a third polyolefin film layer, wherein the third polyolefin film layer comprises a second outer film layer; wherein the at least a third polyolefin film layer is the same or different than the at least first polyolefin film layer; wherein the at least second core polyolefin film layer is disposed in between, and separates, the first and third film layers; wherein the first, second and third film layers are contacted together to form a multilayer film structure; wherein at least one of the polyolefin film layers of the three-layer film structure is prepared from a polymer blend composition comprising: (i) at least a first ethylene-based polymer resin; wherein the at least first ethylene-based polymer resin comprises a catalyzed linear low density polyethylene having an altered molecular structure prepared using a Ziegler-Natta Catalyst System 1, which is prepared as described in Preparation 1 in the description; and (ii) at least a second ethylene-based polymer resin; wherein the at least second ethylene-based polymer resin comprises a low density polyethylene resin; and wherein the multilayer film comprising a catalyzed linear low density polyethylene having an altered molecular structure prepared using a Ziegler-Natta Catalyst System 1, which is prepared as described in Preparation 1 in the description, exhibits at least a 10 percent increase in puncture resistance compared to the puncture resistance of a multilayer film that include a catalyzed linear low density polyethylene resin having a non-altered molecular structure prepared using a Ziegler-Natta catalyst; a process for preparing the multilayer film; and an article made from the multilayer film.

公开(公告)号：US20240417556A1

公开(公告)日：2024-12-19

申请号：US18699980

申请日：2022-10-10

Applicant: Dow Global Technologies LLC

Inventor： Yongchao Zeng ,  Andrew T. Heitsch ,  Bo Liu ,  Mridula Kapur

IPC: C08L23/26 ,  C08L23/06

Abstract: Embodiments are directed towards thermoplastic compositions comprising: a virgin raw polymer, wherein the virgin raw polymer comprises a hydrogenation-catalyst treated polyethylene and a recycled polyethylene wherein the recycled polyethylene comprises either a first blend of polyethylenes recovered from post-consumer material, a second blend of polyethylenes recovered from pre-consumer material, or a combination of the first and second blends.

公开(公告)号：US20220169762A1

公开(公告)日：2022-06-02

申请号：US17600658

申请日：2020-04-28

Applicant: Dow Global Technologies LLC

Inventor： Shadid Askar ,  Peter S. Martin ,  Bo Liu ,  John F. Szul ,  Roger L. Kuhlman ,  Mridula Babli Kapur

IPC: C08F210/16 ,  B01J8/44 ,  C07F17/00

Abstract: A bimodal poly(ethylene-co-1-alkene) copolymer comprising a higher molecular weight poly(ethylene-co-1-alkene) copolymer component and a lower molecular weight poly(ethylene-co-1-alkene) copolymer component. The copolymer is characterized by a unique combination of features comprising, or reflected in, its density; molecular weight distributions; component weight fraction amount; viscoelastic properties; and environmental stress-cracking resistance. Additional inventive embodiments include a method of making the copolymer, a formulation comprising the copolymer and at least one additive that is different than the copolymer, a method of making a manufactured article from the copolymer or formulation; the manufactured article made thereby, and use of the manufactured article.

公开(公告)号：US20240409730A1

公开(公告)日：2024-12-12

申请号：US18700872

申请日：2022-10-11

Applicant: Dow Global Technologies LLC

Inventor： Yongchao Zeng ,  Andrew T. Heitsch ,  Bo Liu ,  Mridula Kapur

IPC: C08L23/06

Abstract: Embodiments of a thermoplastic composition comprise: from 0.5 wt % to 75.0 wt. % of a PCR comprising a blend of polyethylene recovered from post-consumer material, pre-consumer material, or combinations thereof; and from 25.0 wt. % to 99.5 wt % of virgin bimodal polyethylene.

公开(公告)号：US20240400733A1

公开(公告)日：2024-12-05

申请号：US18699633

申请日：2022-10-10

Applicant: Dow Global Technologies LLC

Inventor： Bo Liu ,  Nitin K. Borse ,  Lalit Darunte ,  David M. Pearson ,  Mridula Kapur ,  Linfeng Chen ,  Yongchao Zheng ,  Andrew T. Heitsch

IPC: C08F210/16 ,  C08F2/34 ,  C08F4/642 ,  C08F4/655 ,  C08F4/659 ,  C08F4/6592 ,  C08L23/08

Abstract: Embodiments are directed towards ethylene/1-hexene copolymers made from ethylene and hexene, wherein the ethyl-CA ene/1-hexene copolymer has a density from 0.850 to 0.940 g/cm3, a melt index (I21) from 0.1 to 50 dg/min, a melt index (I21/I2) ratio less than or equal to 18.5, a Mw(Abs)/Mn(Abs) from 2.0 to 3.5, a Mz(Abs)/Mw(Abs) from 1.7 to 4.5, and a cumulative detector fraction (CDFLS) at a molecular weight of ≥1,000,000 g/mol of greater than 100*(0.0536−I21*0.00224)%.

公开(公告)号：US20230257498A1

公开(公告)日：2023-08-17

申请号：US18043780

申请日：2021-09-20

Applicant: Dow Global Technologies LLC

Inventor： Bo Liu ,  John F. Szul ,  Chuan C. He ,  Roger L. Kuhlman ,  Timothy R. Lynn

IPC: C08F210/16 ,  C08F2/01 ,  C08F2/34 ,  C08F4/659 ,  C08F4/6592 ,  B29C48/00

CPC classification number: C08F210/16 ,  C08F2/01 ,  C08F2/34 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  B29C48/022 ,  B29C48/0018 ,  B29K2023/08

Abstract: A bimodal copolymer comprises on average at least 90 weight-percent units derived from ethylene and at least 0.05 weight percent units derived from an α-olefin comonomer having from 4 to 10 carbon atoms, wherein the copolymer has the properties described herein.

公开(公告)号：US20220176592A1

公开(公告)日：2022-06-09

申请号：US17600961

申请日：2020-05-15

Applicant: Dow Global Technologies LLC

Inventor： Daudi A. Abe ,  Bo Liu

IPC: B29B9/06 ,  B29B9/12 ,  B29C48/30 ,  B29C48/00

Abstract: A method of extruding a melt of a linear low-density polyethylene (LLDPE) without surface melt fracture, the method comprises heating a melt of the LLDPE to a temperature from 190.0 to 260.0 degrees Celsius; and extruding through a die the heated melt at a shear rate of from 1,100 to 7,000 per second and at a shear stress of greater than 0.40 megapascal, thereby forming a polyethylene extrudate without surface melt fracture.

公开(公告)号：US20220162358A1

公开(公告)日：2022-05-26

申请号：US17600975

申请日：2020-04-28

Applicant: Dow Global Technologies LLC

Inventor： Shadid Askar ,  Peter S. Martin ,  Bo Liu ,  John F. Szul ,  Roger L. Kuhlman ,  Mridula Babli Kapur

IPC: C08F210/16

Abstract: A bimodal poly(ethylene-co-1-alkene) copolymer comprising a higher molecular weight poly(ethylene-co-1-alkene) copolymer component and a lower molecular weight poly(ethylene-co-1-alkene) copolymer component. The copolymer is characterized by a unique combination of features comprising, or reflected in, its density; molecular weight distributions; component weight fraction amount; and viscoelastic properties; and at least one of environmental stress-cracking resistance and resin swell. Additional inventive embodiments include a method of making the copolymer, a formulation comprising the copolymer and at least one additive that is different than the copolymer, a method of making a manufactured article from the copolymer or formulation; the manufactured article made thereby, and use of the manufactured article.