公开(公告)号：US10577489B2

公开(公告)日：2020-03-03

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

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：US20160215130A1

公开(公告)日：2016-07-28

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

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.

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。 冲击改性聚合物是交联的并且可以选自聚烯烃弹性体，烯烃多嵌段互聚物，烯烃嵌段复合材料及其组合。 任选地，聚合物共混物还可以包含增容剂。 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：US12183479B2

公开(公告)日：2024-12-31

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 ,  C07C311/49 ,  C07C311/62 ,  C07D251/66 ,  C07D257/04 ,  C08J9/10

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：US11466155B2

公开(公告)日：2022-10-11

申请号：US16624556

申请日：2017-06-30

Applicant: Dow Global Technologies LLC

Inventor： Gangwei Sun ,  XianMin Xu ,  Mohamed Esseghir ,  Peng Gao ,  Youjun Wu ,  Lingfeng Yu

IPC: C08L91/00 ,  C08L53/02 ,  G02B6/44

Abstract: A filling composition comprises (A) a mineral oil having a kinematic viscosity from 80 cSt to 100 cSt at 40° C.; (B) a styrene-ethylene/propylene diblock copolymer; and (C1) a propylene/ethylene copolymer having a weight average molecular weight (Mw) from 5,000 to 200,000 or (C2) an ethylene/propylene copolymer having a weight average molecular weight (Mw) from 5,000 to 200,000. The filling composition is used as a filling composition in a buffer tube.

公开(公告)号：US11091640B2

公开(公告)日：2021-08-17

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：US20210155802A1

公开(公告)日：2021-05-27

申请号：US16624556

申请日：2017-06-30

Applicant: Dow Global Technologies LLC

Inventor： Gangwei Sun ,  XianMin Xu ,  Mohamed Esseghir ,  Peng Gao ,  Youjun Wu ,  Lingfeng Yu

IPC: C08L91/00 ,  C08L53/02 ,  G02B6/44

Abstract: A filling composition comprises (A) a mineral oil having a kinematic viscosity from 80 cSt to 100 cSt at 40° C.; (B) a styrene-ethylene/propylene diblock copolymer; and (C1) a propylene/ethylene copolymer having a weight average molecular weight (Mw) from 5,000 to 200,000 or (C2) an ethylene/propylene copolymer having a weight average molecular weight (Mw) from 5,000 to 200,000. The filling composition is used as a filling composition in a buffer tube.

公开(公告)号：US10654997B2

公开(公告)日：2020-05-19

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 ,  H01B3/44 ,  C08L23/14 ,  C08L53/00

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：US20200148868A1

公开(公告)日：2020-05-14

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

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：US10550249B2

公开(公告)日：2020-02-04

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: C08J3/22 ,  C08J9/00 ,  C08J9/28 ,  C08L23/04 ,  C08L23/06 ,  C08L27/18 ,  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：US10414892B2

公开(公告)日：2019-09-17

申请号：US15528694

申请日：2014-11-28

Applicant: Dow Global Technologies LLC

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

IPC: C08J9/00 ,  C08J9/10 ,  C08J9/12 ,  C08L23/06 ,  H01B3/44 ,  H01B7/02 ,  C08K5/23 ,  C08L27/18

Abstract: The process of foaming a polyolefin, e.g., polyethylene, composition using as a nucleator a combination an azodicarbonamide (ADCA) and a fluororesin at a ADCA: fluororesin weight ratio of 60:40 to 20:80. The synergic effect between these two nucleating agents results in a higher nuclei density and a foamed product with a smaller cell size as compared to processes using and products produced by the use of neat PTFE or neat ADCA alone as the nucleating agent.