公开(公告)号：US20180346676A1

公开(公告)日：2018-12-06

申请号：US15780102

申请日：2015-12-03

Applicant: Dow Global Technologies LLC

Inventor： Cheng Chen ,  Gangwei Sun ,  Mohamed Esseghir ,  Jeffrey M. Cogen ,  Zhe Du ,  Jianxin Zhang

IPC: C08J9/12 ,  C08J9/00 ,  C08K5/14

CPC classification number: C08L23/06 ,  C08J9/0023 ,  C08J9/0061 ,  C08J9/122 ,  C08J2201/026 ,  C08J2201/03 ,  C08J2201/032 ,  C08J2203/06 ,  C08J2203/08 ,  C08J2205/044 ,  C08J2207/06 ,  C08J2323/06 ,  C08J2423/06 ,  C08J2483/04 ,  C08K5/14 ,  C08L23/04 ,  C08L2203/14 ,  C08L2207/062 ,  C08L2310/00 ,  C08L2312/00 ,  C08L23/0815

Abstract: A process for making a foam composition, the process comprising the steps of: (A) Forming a mixture comprising high density polyethylene (HDPE), low density polyethylene (LDPE) and a peroxide; and (B) Contacting the mixture of (A) with carbon dioxide (CO2) at a pressure greater than or equal to 15 megaPascals (MPa). In one embodiment the peroxide is DTAP. In one embodiment the mixture of (A) further comprises a CO2-philic compound such as PDMS.

公开(公告)号：US20170267828A1

公开(公告)日：2017-09-21

申请号：US15528712

申请日：2014-11-28

Applicant: Dow Global Technologies LLC

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

IPC: C08J9/228 ,  C08L23/06 ,  C08L27/18 ,  H01B3/44 ,  C07C55/22

CPC classification number: C08J9/228 ,  C07C55/22 ,  C08J9/0061 ,  C08J9/08 ,  C08J2203/02 ,  C08J2323/06 ,  C08J2423/06 ,  C08J2427/12 ,  C08K5/098 ,  C08K2003/262 ,  C08L23/06 ,  C08L27/18 ,  H01B3/44 ,  H01B3/441 ,  H01B3/445

Abstract: The process of foaming a polyolefin, e.g., polyethylene, composition using as a nucleator a combination of (A) a fluororesin, 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 if the first component of the mixture is an alkali metal citrate, then the second component of the mixture is not an alkali metal citrate.

公开(公告)号：US09670345B2

公开(公告)日：2017-06-06

申请号：US14917502

申请日：2013-10-18

Applicant: Dow Global Technologies LLC

Inventor： Mohamed Esseghir ,  Gangwei Sun ,  Jeffrey M. Cogen ,  Gary R. Marchand

IPC: C08L23/12 ,  C08L51/06 ,  C08L23/14 ,  G02B6/44

CPC classification number: C08L23/12 ,  C08L23/142 ,  C08L51/06 ,  C08L2201/08 ,  C08L2203/12 ,  C08L2205/06 ,  C08L2205/24 ,  G02B6/4407 ,  G02B6/443 ,  G02B6/4479 ,  C08L53/00

Abstract: Optical cable components fabricated from an extrudable polymeric blend of crystalline polypropylene modified with one or more impact-modifying polymers. The impact-modifying polymers are crosslinked and can be selected from a polyolefin elastomer, an olefin multi-block interpolymer, an olefin block composite, and combinations thereof. Optionally, the polymeric blend can further comprise a compatibilizer. The polymeric blend may also contain one or more additives. The optical fiber cable components can be selected from buffer tubes, core tubes, and slotted core tubes.

公开(公告)号：US11180645B2

公开(公告)日：2021-11-23

申请号：US16742357

申请日：2020-01-14

Applicant: Dow Global Technologies LLC

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

IPC: C08J9/10 ,  C08L23/06 ,  C08J9/00 ,  B29C48/285 ,  H01B3/44 ,  C08K3/26 ,  C08K5/092 ,  C08K5/098 ,  C08K5/23 ,  C08L23/26 ,  B29C48/40

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：US20210277223A1

公开(公告)日：2021-09-09

申请号：US17259267

申请日：2018-07-11

Applicant: Dow Global Technologies LLC

Inventor： Gangwei Sun ,  Peng Gao ,  Mohamed Esseghir

IPC: C08L53/00 ,  G02B6/44

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：US09663645B2

公开(公告)日：2017-05-30

申请号：US14915354

申请日：2013-10-18

Applicant: Dow Global Technologies LLC

Inventor： Mohamed Esseghir ,  Gangwei Sun ,  Bharat I. Chaudhary ,  Chester J. Kmiec ,  Gary R. Marchand ,  Yushan Hu

IPC: C08L23/12 ,  C08L53/00 ,  G02B6/44

CPC classification number: C08L23/12 ,  C08L53/00 ,  C08L2201/08 ,  C08L2203/12 ,  C08L2205/06 ,  C08L2205/24 ,  G02B6/4407 ,  G02B6/4429 ,  G02B6/443 ,  G02B6/4479 ,  C08L23/0815

Abstract: Optical cable components fabricated from an extrudable polymeric blend of crystalline polypropylene modified with one or more impact-modifying polymers. The impact-modifying polymers are selected from an olefin multi-block interpolymer, an olefin block composite, and combinations thereof. Optionally, the polymeric blend can further comprise an elastomer other than the impact-modifying polymer. The polymeric blend may also contain one or more additives. The optical fiber cable components can be selected from buffer tubes, core tubes, and slotted core tubes.

公开(公告)号：US20160215129A1

公开(公告)日：2016-07-28

申请号：US14915354

申请日：2013-10-18

Applicant: Mohamed ESSEGHIR ,  Gangwei SUN ,  Bharat I. CHAUDHARY ,  Chester J. KMIEC ,  Gary R. MARCHAND ,  Yushan HU ,  DOW GLOBAL TECHNOLOGIES LLC

Inventor： Mohamed Esseghir ,  Gangwei Sun ,  Bharat I. Chaudhary ,  Chester J. Kmiec ,  Gary R. Marchand ,  Yushan Hu

IPC: C08L23/12 ,  G02B6/44 ,  C08L53/00

CPC classification number: C08L23/12 ,  C08L53/00 ,  C08L2201/08 ,  C08L2203/12 ,  C08L2205/06 ,  C08L2205/24 ,  G02B6/4407 ,  G02B6/4429 ,  G02B6/443 ,  G02B6/4479 ,  C08L23/0815

Abstract: Optical cable components fabricated from an extrudable polymeric blend of crystalline polypropylene modified with one or more impact-modifying polymers. The impact-modifying polymers are selected from an olefin multi-block interpolymer, an olefin block composite, and combinations thereof. Optionally, the polymeric blend can further comprise an elastomer other than the impact-modifying polymer. The polymeric blend may also contain one or more additives. The optical fiber cable components can be selected from buffer tubes, core tubes, and slotted core tubes.

Abstract translation: 由用一种或多种冲击改性聚合物改性的结晶聚丙烯的可挤出聚合物共混物制成的光缆部件。 冲击改性聚合物选自烯烃多嵌段互聚物，烯烃嵌段复合材料及其组合。 任选地，聚合共混物还可以包含不同于冲击改性聚合物的弹性体。 聚合物共混物还可以含有一种或多种添加剂。 光纤电缆组件可以从缓冲管，芯管和开槽芯管中选择。

公开(公告)号：US11261317B2

公开(公告)日：2022-03-01

申请号：US16718367

申请日：2019-12-18

Applicant: Dow Global Technologies LLC

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

IPC: C08J3/22 ,  C08J9/00 ,  C08J9/28 ,  C08L23/04 ,  C08L23/06 ,  C08L23/18 ,  H01B3/44

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：US20210265077A1

公开(公告)日：2021-08-26

申请号：US17252590

申请日：2018-06-15

Applicant: Dow Global Technologies LLC

Inventor： Gangwei Sun ,  Hongyu Chen ,  Mohamed Esseghir ,  Renhua Fan ,  Shuo-En Wang

IPC: H01B3/44 ,  C08J9/10 ,  C07D251/66 ,  C07C311/49 ,  C07D257/04 ,  C07C311/62

Abstract: Chemical foaming agents having p-toluenesulfonyl groups. Processes for preparing foamed polyolefin compositions using chemical foaming agents having p-toluenesulfonyl groups. Articles of manufacture containing formed polyolefins prepared using chemical foaming agents having p-toluenesulfonyl groups.

公开(公告)号：US10858492B2

公开(公告)日：2020-12-08

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 ,  C08L23/06 ,  C08L27/18 ,  C08J9/00 ,  H01B3/44 ,  C08J9/12

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.