公开(公告)号：US20190023895A1

公开(公告)日：2019-01-24

申请号：US16069388

申请日：2016-03-07

Applicant: Dow Global Technologies LLC

Inventor： William J. Harris ,  Mohamed Esseghir ,  Gangwei Sun

IPC: C08L67/02 ,  G02B6/44

Abstract: Polymeric compositions comprising a polybutylene terephthalate, an ethylene-based polymer, and a maleated ethylene-based polymer. Optical cable components fabricated from the polymeric composition. Optionally, the polymeric composition can further comprise one or more additives, such as a filler. The optical fiber cable components can be selected from buffer tubes, core tubes, and slotted core tubes, among others.

公开(公告)号：US11339282B2

公开(公告)日：2022-05-24

申请号：US17259267

申请日：2018-07-11

Applicant: Dow Global Technologies LLC

Inventor： Gangwei Sun ,  Peng Gao ,  Mohamed Esseghir

IPC: G02B6/44 ,  C08L53/00

Abstract: Provided is a flooding composition. The flooding composition includes in weight percent (wt %) based on the weight of the composition: (A) from 1 wt % to less than 5 wt % of a polytetrafluoroethylene (PTFE) powder; (B) a styrene-ethylene/propylene block copolymer; and (C) a mineral oil having a kinematic viscosity from 32 cSt to 100 cSt at 40° C. Also a fiber optic cable is provided. The fiber optic cable includes a buffer tube; at least one optical fiber in the buffer tube; and the flooding composition.

公开(公告)号：US20210155801A1

公开(公告)日：2021-05-27

申请号：US16624543

申请日：2017-06-30

Applicant: Dow Global Technologies LLC

Inventor： Gangwei Sun ,  Peng Gao ,  Yonghua Gong ,  Mohamed Esseghir

IPC: C08L91/00 ,  G02B6/44

Abstract: A composition comprises (A) a mineral oil having a viscosity from 32 cSt to 100 cSt at 40° C.; (B) a styrene-ethylene/propylene diblock copolymer; and (C) from 1 wt % to less than 5 wt % polystyrene having a weight average molecular weight (Mw) from 1,000 to 100,000. The composition is used as a filling composition in a buffer tube.

公开(公告)号：US20190203011A1

公开(公告)日：2019-07-04

申请号：US16332279

申请日：2016-09-13

Applicant: Dow Global Technologies LLC

Inventor： Gangwei Sun ,  Mohamed Esseghir ,  Yonghua Gong

IPC: C08J9/32 ,  C08J9/00 ,  C08L23/06 ,  C08L27/18

CPC classification number: C08J9/32 ,  C08J9/0061 ,  C08J9/122 ,  C08J2201/03 ,  C08J2203/06 ,  C08J2203/14 ,  C08J2203/22 ,  C08J2323/06 ,  C08J2423/06 ,  C08J2427/18 ,  C08L23/06 ,  C08L27/18 ,  C08L2203/202 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2205/24 ,  C08L2207/062 ,  C08L2207/066 ,  C08L2310/00 ,  H01B3/441 ,  H01B3/445

Abstract: A foamable composition comprises in weight percent based on the weight of the composition: (A) 45 to 95 wt % HDPE, (B) 4 to 54 wt % LDPE, and (C) 0.01 to 2 wt % of a nucleating agent comprising in weight percent based on the weight of the nucleating agent: (1) 20 to 80 wt % of fluororesin, e.g., PTFE, and (2) 80 to 20 wt % of expandable polymeric microspheres.

公开(公告)号：US10308782B2

公开(公告)日：2019-06-04

申请号：US15324770

申请日：2014-08-15

Applicant: Dow Global Technologies LLC

Inventor： Zhe Du ,  Cheng Chen ,  David Hong Fei Guo ,  Dachao Li ,  Gangwei Sun ,  Jianxin Zhang

IPC: C08J9/12 ,  H01B3/44 ,  H01B3/46 ,  C08J9/00

Abstract: In one aspect there is provided a foam comprising: a polymeric matrix comprising polyethylene grafted polymerized siloxane, and a plurality of cells formed in the polymeric matrix and containing a blowing agent comprising carbon dioxide. In another aspect there is provided a method of making a foam comprising: grafting polymerized siloxane to polyethylene to form a grafted intermediate; molding the grafted intermediate to form a molded intermediate; and foaming the molded intermediate using high-pressure CO2 to form the foam, wherein the foam has a porosity greater than 75%.

公开(公告)号：US20190092918A1

公开(公告)日：2019-03-28

申请号：US16081514

申请日：2016-03-28

Applicant: Gangwei Sun ,  Mohamed Esseghir ,  Dow Global Technologies LLC

Inventor： Gangwei Sun ,  Mohamed Esseghir

IPC: C08J9/00 ,  C08J9/14 ,  C08J9/12 ,  C08L23/06 ,  C08L27/18 ,  C08K3/38

Abstract: The process of foaming a polyolefin composition using as a nucleator a combination of a fluororesin and a boron nitride at a fluororesin-to-boron nitride weight ratio of less than 4:1. The synergistic effect between these two nucleating agents results in a higher nuclei density and a foamed product with a smaller average cell size as compared to processes using and products produced by the use of neat PTFE or neat boron nitride alone as the nucleating agent.

公开(公告)号：US20190048177A1

公开(公告)日：2019-02-14

申请号：US16086682

申请日：2016-03-25

Applicant: Dow Global Technologies LLC

Inventor： Mohamed Esseghir ,  Gangwei Sun ,  Yonghua Gong

IPC: C08L23/12 ,  C08L23/06 ,  G02B6/44

Abstract: Buffer tubes made from a composition comprising: (A) polypropylene, (B) high density polyethylene (HDPE), (C) propylene-ethylene copolymer (PE copolymer), (D) olefin block composite, and (E) optionally, one or more of a nucleating agent, filler and additive, exhibit reduced stress whitening as compared to buffer tubes made from conventional polypropylene compositions.

公开(公告)号：US20180105684A1

公开(公告)日：2018-04-19

申请号：US15562028

申请日：2015-05-08

Applicant: Dow Global Technologies LLC

Inventor： Gangwei Sun ,  Mohamed Esseghir ,  Xianmin Xu ,  Chester J. Kmiec

IPC: C08L23/06 ,  C08L23/26 ,  C08K5/092 ,  C08K5/098 ,  C08K5/23 ,  C08K3/26 ,  C08J9/00

CPC classification number: C08L23/06 ,  B29C48/2886 ,  B29C48/40 ,  C08J9/0023 ,  C08J9/0028 ,  C08J9/0052 ,  C08J9/0061 ,  C08J9/103 ,  C08J2205/04 ,  C08J2323/06 ,  C08J2423/06 ,  C08K3/26 ,  C08K5/092 ,  C08K5/098 ,  C08K5/23 ,  C08K2003/262 ,  C08L23/26 ,  C08L2203/14 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2207/066 ,  H01B3/441 ,  C08L23/04

Abstract: A process of foaming a polyolefin, e.g., polyethylene, composition using as a nucleator a combination of (A) azodicarbonamide, and (B) a mixture of (1) a first component consisting of at least one of citric acid and an alkali metal citrate, and (2) a second component consisting of at least one of an alkali metal citrate, a di-alkali metal hydrogen citrate, an alkali metal dihydrogen citrate and an alkali metal bicarbonate, with the proviso that the mixture is not solely composed of alkali metal citrate.

公开(公告)号：US20170327676A1

公开(公告)日：2017-11-16

申请号：US15528850

申请日：2014-11-28

Applicant: Dow Global Technologies LLC

Inventor： Gangwei Sun ,  Mohamed Esseghir ,  Chester J. Kmiec ,  Lei Ying ,  Yabin Sun ,  XianMin Xu

IPC: C08L23/06 ,  H01B3/44 ,  C08J9/28

Abstract: A polyolefin composition is foamed by a process in which a nucleator is used, and the nucleator comprises 80% or more of unagglomerated fluororesin particles and/or agglomerates of fluororesin particles in which both the unagglomerated particles and the agglomerates are less than 1 μm in size.

公开(公告)号：US20170204239A1

公开(公告)日：2017-07-20

申请号：US15324770

申请日：2014-08-15

Applicant: Dow Global Technologies LLC

Inventor： Zhe Du ,  Cheng Chen ,  Hanfei Guo ,  Dachao Li ,  Gangwei Sun ,  Jianxin Zhang

IPC: C08J9/12 ,  H01B3/44 ,  C08J9/00 ,  H01B3/46

CPC classification number: C08J9/122 ,  C08J9/0061 ,  C08J2201/032 ,  C08J2203/06 ,  C08J2207/06 ,  C08J2323/06 ,  C08J2351/06 ,  C08J2387/00 ,  H01B3/441 ,  H01B3/46

Abstract: In one aspect there is provided a foam comprising: a polymeric matrix comprising polyethylene grafted polymerized siloxane, and a plurality of cells formed in the polymeric matrix and containing a blowing agent comprising carbon dioxide. In another aspect there is provided a method of making a foam comprising: grafting polymerized siloxane to polyethylene to form a grafted intermediate; molding the grafted intermediate to form a molded intermediate; and foaming the molded intermediate using high-pressure CO2 to form the foam, wherein the foam has a porosity greater than 75%.