公开(公告)号：CA2969005C

公开(公告)日：2021-12-14

申请号：CA2969005

申请日：2014-11-28

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： XU XIAN MIN ,  SUN GANGWEI ,  ESSEGHIR MOHAMED ,  KMIEC CHESTER J

IPC: H01B3/44 ,  C08L23/06 ,  C08L27/18

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：CA2927156C

公开(公告)日：2021-10-26

申请号：CA2927156

申请日：2013-10-18

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： ESSEGHIR MOHAMED ,  SUN GANGWEI ,  CHAUDHARY BHARAT I ,  KMIEC CHESTER J ,  MARCHAND GARY R ,  HU YUSHAN

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

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：CA2927060C

公开(公告)日：2021-03-30

申请号：CA2927060

申请日：2013-10-18

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： ESSEGHIR MOHAMED ,  SUN GANGWEI ,  COGEN JEFFREY M ,  MARCHAND GARY R

IPC: G02B6/44 ,  C08L23/12 ,  C08L23/16

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：CA3068848A1

公开(公告)日：2019-01-03

申请号：CA3068848

申请日：2017-06-30

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： SUN GANGWEI ,  GAO PENG ,  GONG YONGHUA ,  ESSEGHIR MOHAMED

IPC: G02B6/44

Abstract: A composition comprises (A) a mineral oil having a viscosity from 32 cSt to 100 cSt at 40?; (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：CA3007012A1

公开(公告)日：2017-06-08

申请号：CA3007012

申请日：2015-12-03

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： CHEN CHENG ,  SUN GANGWEI ,  ESSEGHIR MOHAMED ,  COGEN JEFFREY M ,  DU ZHE ,  ZHANG JIANXIN

IPC: C08L23/06 ,  C08J9/00

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：MX390558B

公开(公告)日：2025-03-20

申请号：MX2017006111

申请日：2017-05-10

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： KMIEC CHESTER J ,  SUN GANGWEI ,  ESSEGHIR MOHAMED ,  XU XIAN MIN

IPC: H01B3/44 ,  C08L23/06 ,  C08L27/18

Abstract: El proceso de espumado de una composición de poliolefina, por ejemplo polietileno, que utiliza como nucleador una combinación de (A) una fluororesina, y (B) una mezcla de (1) un primer componente que consiste de al menos uno de ácido cítrico y un citrato de metal alcalino y (2) un segundo componente que consiste de al menos uno de un citrato de metal alcalino, un citrato hidrógeno de metal di-alcalino, un citrato dihidrógeno de metal alcalino y un bicarbonato de metal alcalino con la condición de que si el primer componente de la mezcla es un citrato de metal alcalino, entonces el segundo componente de la mezcla no es un citrato de metal alcalino.

公开(公告)号：CA2969004C

公开(公告)日：2022-01-18

申请号：CA2969004

申请日：2014-11-28

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： SUN GANGWEI ,  ESSEGHIR MOHAMED ,  KMIEC CHESTER J

IPC: C08K5/16 ,  C08J9/00 ,  C08L23/06 ,  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 agentsresults 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.

公开(公告)号：CA3068850A1

公开(公告)日：2019-01-03

申请号：CA3068850

申请日：2017-06-30

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： SUN GANGWEI ,  XU XIANMIN ,  ESSEGHIR MOHAMED ,  GAO PENG ,  WU YOUJUN ,  YU LINGFENG

IPC: G02B6/44 ,  C08L91/00 ,  H01B7/285

Abstract: A filling composition comprises (A) a mineral oil having a kinematic viscosity from 80 cSt to 100 cSt at 40?; (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：MX2016004488A

公开(公告)日：2016-06-16

申请号：MX2016004488

申请日：2013-10-18

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： COGEN JEFFREY M ,  ESSEGHIR MOHAMED ,  MARCHAND GARY R ,  SUN GANGWEI

IPC: G02B6/44 ,  C08L23/12 ,  C08L23/16

Abstract: La presente invención se refiere a componentes de cable óptico fabricados a partir de una mezcla polimérica extruible de polipropileno cristalino modificado con uno o más polímeros modificadores de impacto. Los polímeros modificadores de impacto son reticulados y se pueden seleccionar de un elastómero de poliolefina, un interpolímero de multibloques de olefina, un compuesto de bloques de olefina, y combinaciones de los mismos. Opcionalmente, la mezcla polimérica puede comprender además un compatibilizante. La mezcla polimérica puede contener también uno o más aditivos. Los componentes de cable de fibra óptica se pueden seleccionar de tubos amortiguadores, tubos de núcleo, y tubos de núcleo ranurado.

公开(公告)号：CA2984328C

公开(公告)日：2022-07-19

申请号：CA2984328

申请日：2015-05-08

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： SUN GANGWEI ,  ESSEGHIR MOHAMED ,  XU XIANMIN ,  KMIEC CHESTER J

IPC: C08L23/06 ,  B29C44/06 ,  C08J9/10 ,  C08K5/092 ,  C08K5/098 ,  C08K5/23

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.