公开(公告)号：US20240067809A1

公开(公告)日：2024-02-29

申请号：US18254224

申请日：2021-11-22

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Santosh S. Bawiskar ,  James R. de Garavilla ,  Jessica Ye Huang ,  Rajesh P. Paradkar ,  George Prejean ,  Kalyan Sehanobish ,  Barry A. Morris

IPC: C08L23/08

CPC classification number: C08L23/0876 ,  C08L2201/08 ,  C08L2205/02 ,  C08L2207/062

Abstract: Embodiments of polymer blends may include a first polymer composition and a second polymer composition. The first polymer composition may include a polyolefin having a thermal transition temperature of at least 100° C. and a graftable monomer having at least one acid or anhydride functional group grafted onto the polyolefin. The second polymer composition may include an E/X/Y ethylene interpolymer, wherein E is an ethylene monomer and comprises greater than 50 wt. % of the interpolymer, X is an α,β-unsaturated C3-C8 carboxylic acid and comprises greater than 0 to 25 wt. % of the interpolymer, and Y is an optional comonomer comprising C1-C8 alkyl acrylate.

公开(公告)号：US20240059876A1

公开(公告)日：2024-02-22

申请号：US18260278

申请日：2022-02-21

Applicant: Dow Global Technologies LLC

Inventor： Yifan Dong ,  Santosh S. Bawiskar ,  Teresa P. Karjala ,  Pradeep Jain ,  Lori L. Kardos ,  Michael B. Biscoglio ,  John P. O'brien ,  Daniel W. Baugh, III

IPC: C08L23/06 ,  C08J3/28

CPC classification number: C08L23/06 ,  C08J3/28 ,  C08L2203/14 ,  C08L2203/16 ,  C08L2203/30 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2207/066

Abstract: Irradiation of low-density polyethylene resins with an electron beam produces modified polyethylene resins that have significantly improved melt strength and retain useful melt-index and have few cross-linked gels, if the starting LDPE resin and the level of irradiation are properly selected.

公开(公告)号：US20220275121A1

公开(公告)日：2022-09-01

申请号：US17621935

申请日：2020-06-18

Applicant: Dow Global Technologies LLC

Inventor： Santosh S. Bawiskar ,  Guang Ming Li ,  Tianzi Huang

IPC: C08F210/18 ,  C08F8/00

Abstract: The present disclosure provides a process. In an embodiment, the process includes providing a neat ethylene/ propy-lene/non-conjugated polyene terpolymer (n-terpolymer) having a Mooney viscosity (ML (1+4) at 125C) less than 100 Mooney units (MU). The process includes exposing the n-terpolymer to electron beam radiation at a dosage from 0.2 megaRad (MRad) to 1.3 MRad. The process includes forming a branched ethylene/propylene/non-conjugated polyene terpolymer (b-terpolymer) having a Mooney viscosity ML (1+4) at 125C from 25 MU to 135 MU.

公开(公告)号：US11421085B2

公开(公告)日：2022-08-23

申请号：US16406509

申请日：2019-05-08

Applicant: Dow Global Technologies LLC

Inventor： Shrikant Dhodapkar ,  Remi A. Trottier ,  Santosh S. Bawiskar ,  Kyle D. Anderson

IPC: B65B1/04 ,  C08J7/06 ,  B65D81/26 ,  C08J3/12 ,  B65B7/02 ,  C08K3/36

Abstract: The present disclosure provides a packaging process and the resultant package produced from the process. The process includes introducing, into a mixing device, pellets composed of ethylene/propylene/diene polymer (EPDM). The EPDM comprises greater than 60 wt % units derived from ethylene. The pellets have a residual moisture content from 500 ppm to 2500 ppm. The process includes adding a silica-based powder to the mixing device and coating at least a portion of the pellets with the silica-based powder. The process includes sealing a bulk amount of the coated pellets in a bag made of a flexible polymeric film. The process includes absorbing, with the silica-based powder, the residual moisture from the pellets, and preventing moisture condensation in the bag interior for a period from 7 days after the sealing step to 1000 days after the sealing step.

公开(公告)号：US11299616B2

公开(公告)日：2022-04-12

申请号：US16622273

申请日：2018-06-06

Applicant: Dow Global Technologies LLC

Inventor： Bharat I. Chaudhary ,  Manish Talreja ,  Yichi Zhang ,  Santosh S. Bawiskar ,  Peter C. Dreux ,  Manish K. Mundra ,  Abhijit Ghosh-Dastidar ,  Rajen M. Patel ,  Kalyan Sehanobish ,  Chieh Ying Heah ,  Kenneth Hin-Leong Ong

IPC: C08L51/06 ,  C08F255/02 ,  C08K3/22 ,  C08K5/03 ,  C08K5/14 ,  C08K5/57 ,  C08L23/06 ,  C08L23/08 ,  H01B3/44

Abstract: Articles made from a moisture-crosslinkable, polymeric composition comprising in weight percent based on the weight of the composition: (A) 10 to 99.99 wt % of a nonpolar ethylenic polymer grafted with silane functionality (Si-g-npPE), the npPE having the following properties before grafting: (1) a vinyl content of 0.2 to 0.7 per 1,000 carbon atoms, (2) a melt index of 1.5 to 7.0 dg/min, (3) a density of 0.913 to 0.965 g/cc, and (4) a molecular weight distribution (Mw/Mn) of equal to or less than 8; (B) 0.01 to 20 wt % of a silanol condensation catalyst; and (C) 0 to 70 wt % of a flame retardant additive; exhibit one or more of desirable (a) silane grafting efficiency; (b) hot creep performance as a cable jacket/insulation after moisture crosslinking; (c) retained dielectric strength after glancing impact as a moisture crosslinked cable construction; and (d) crush resistance as a moisture crosslinked cable construction.

公开(公告)号：US10920115B2

公开(公告)日：2021-02-16

申请号：US15738927

申请日：2016-08-05

Applicant: Dow Global Technologies LLC

Inventor： Yong Zheng ,  Brian W. Walther ,  Santosh S. Bawiskar ,  Cristina Serrat

IPC: B01J31/00 ,  C09J123/06 ,  B32B27/32 ,  B32B1/08 ,  B32B27/06 ,  C08K5/42 ,  C08L23/06 ,  C08L23/08 ,  C08L51/06 ,  B32B7/12 ,  B32B27/08 ,  B32B27/30 ,  B32B27/34

Abstract: The present invention provides resins that can be used as a tie layer in a multilayer structure and to multilayer structures including one or more tie layers formed from such resins. In one aspect, a resin for use as a tie layer in a multilayer structure that includes a high density polyethylene having a density greater than 0.960 g/cm3, wherein the high density polyethylene includes 1 to 99 weight percent of the resin, a maleic anhydride grafted high density polyethylene, wherein the maleic anhydride grafted high density polyethylene includes 1 to 99 weight percent of the resin, and a catalyst including at least one Lewis acid.

公开(公告)号：US12070876B2

公开(公告)日：2024-08-27

申请号：US17272338

申请日：2019-08-27

Applicant: Dow Global Technologies LLC

Inventor： Santosh S. Bawiskar ,  Michael J. Zogg, Jr. ,  Guang Ming Li ,  Yi Jin ,  Lonnie Schilhab

IPC: B29B13/04 ,  B29B9/10 ,  B29K23/00 ,  C08F210/16 ,  C08J3/12

CPC classification number: B29B13/04 ,  B29B9/10 ,  C08F210/16 ,  C08J3/12 ,  B29K2023/06 ,  B29K2023/12 ,  B29K2995/0063 ,  B29K2995/0088

Abstract: An apparatus to batch or continuously form solid polymer particles, the apparatus comprising the following components: A) at least one pastillation unit comprising a pastillation head, said unit used to form discrete molten polymer particles from a polymer melt; B) a moving belt to receive and transfer the discrete molten polymer particles from the pastillation head; C) a means to transfer water onto the moving belt, such that the water comes into contact with the discrete molten polymer particles on the moving belt to form the solid polymer particles; and wherein the water of component C is sprayed onto the discrete molten polymer particles, such that the ratio of “the rate of water spray” to “the discharge rate” is ≥3.0; and wherein the belt residence time is ≤50 seconds.

公开(公告)号：US11136427B2

公开(公告)日：2021-10-05

申请号：US15760815

申请日：2016-09-22

Applicant: Dow Global Technologies LLC

Inventor： Shrikant Dhodapkar ,  Gregory E. Johnson ,  Rennisha R. Wickham ,  Santosh S. Bawiskar ,  Guang Ming Li ,  Harold W. Boone

IPC: C08F255/02 ,  C08F6/00

Abstract: A process to form a first composition comprising a functionalized olefin-based polymer comprises: a) polymerizing a composition comprising an olefin to form a reaction product comprising an olefin-based polymer; b) subjecting at least a portion of the reaction product to at least one devolatilization to form a polymer-rich melt, wherein step b) occurs downstream from and in-line with step a); and c) reacting at least a portion of the polymer-rich melt with at least one functionalization agent and, optionally, at least one free-radical initiator to form the first composition, wherein step c) occurs downstream from and in-line with step b), wherein “the viscosity of the functionalized olefin-based polymer (177° C./350° F.)” to “the viscosity of the olefin-based polymer (177° C./350° F.)” is from 0.1 to 5.0.

公开(公告)号：US11110690B2

公开(公告)日：2021-09-07

申请号：US16461534

申请日：2017-11-10

Applicant: Dow Global Technologies LLC

Inventor： Sydney E. Hansen ,  Brian W. Walther ,  Hayley A. Brown ,  Santosh S. Bawiskar

IPC: B32B27/08 ,  B32B7/12 ,  B32B27/18 ,  B32B27/30 ,  B32B27/32 ,  C08F255/02 ,  C08K5/00 ,  C08K5/134 ,  C08K5/5333 ,  C08L23/06 ,  C08L23/08 ,  C08L51/06 ,  C08L53/02

Abstract: Embodiments are directed to a tie layer composition comprising functionalized polyethylene, styrene block copolymer, base polyethylene, and antioxidant co-stabilizers, wherein the antioxidant co-stabilizers comprise at least one oxygen scavenger, at least one peroxy free radical scavenger, and at least one alkyl free radical scavenger. Further embodiments are directed to multilayer films or sheets which include the tie layer composition.

公开(公告)号：US11059913B2

公开(公告)日：2021-07-13

申请号：US16631119

申请日：2018-07-02

Applicant: Dow Global Technologies LLC

Inventor： Michael J. Zogg, Jr. ,  Santosh S. Bawiskar ,  Yi Jin ,  Daniel S. Rynearson ,  Harold W. Boone ,  Kate R. Brown ,  Barry D. Kluge, Jr.

IPC: C08F2/04 ,  C08F2/01 ,  C08F10/02 ,  C08F10/06 ,  B29B9/10

Abstract: A process to form an olefin-based polymer, said process comprising at least the following steps: a) polymerizing a reaction mixture comprising an olefin, in at least one reactor, in a solution polymerization, to form a polymer solution; b) feeding at least a portion of the polymer solution through at least one devolatilizer, to form the olefin-based polymer, in melt form; c) feeding at least a portion of the olefin-based polymer, in melt, form through a heat exchanger, and then into a pastillation apparatus to form polymer particles.