公开(公告)号：US11984242B2

公开(公告)日：2024-05-14

申请号：US17109243

申请日：2020-12-02

Applicant: Prysmian S.p.A.

Inventor： Elena Roda ,  Franco Galletti

IPC: H01B7/295 ,  C08L27/06 ,  C08K3/22

CPC classification number: H01B7/295 ,  C08L27/06 ,  C08K2003/2224 ,  C08K3/2279 ,  C08L2201/02 ,  C08L2203/202

Abstract: A flame-retardant electric cable having a core comprising at least one electric conductor, an electrically insulating coating and an outermost layer made from a flame-retardant polymer composition comprising:



a) polyvinylchloride (PVC) as base polymer;
b) 25-45% (70-110 phr) by weight of at least one metal hydroxide;
c) 0.4-3% (about 1-8 phr) by weight of an optionally surface-treated montmorillonite having average particle dimensions of from 5 to 20 μm;
d) 1.2-3% (about 3-8 phr) by weight of antimony trioxide;
wherein the sum of the amount of montmorillonite and antimony trioxide is at least 5.5 phr and wherein the antimony trioxide and montmorillonite are in a ratio of from 1:0.1 to 1:2.5.

公开(公告)号：US20150284528A1

公开(公告)日：2015-10-08

申请号：US14441335

申请日：2012-11-14

Applicant: PRYSMIAN S.P.A.

Inventor： Franco Galletti ,  Vito Scrima

IPC: C08J11/28 ,  H01B7/17 ,  H01B7/00

CPC classification number: C08J11/28 ,  C08J11/06 ,  C08J2315/00 ,  C08J2323/08 ,  C08J2323/16 ,  C08K5/005 ,  C08K5/14 ,  C08L2207/20 ,  H01B3/441 ,  H01B7/0045 ,  H01B7/17 ,  Y02W30/701

Abstract: A process for recovering wastes of a polymeric composition including at least one peroxide-curable polymer and at least one peroxidic crosslinking agent, which includes compounding the wastes with at least one antioxidant agent suitable for sulfur-vulcanized elastomeric compositions, at a temperature lower than the decomposition temperature of the at least one peroxide crosslinking agent. These antioxidant agents are effective to quench the peroxide crosslinking agent, so as to avoid any substantial crosslinking of the composition during processing of the same. The compounding of the polymeric wastes with the antioxidant agent is carried out at a temperature lower than the decomposition temperature of the peroxide crosslinking agent, so as to avoid any premature activation of the crosslinking agent. The process is particularly suitable for compositions based on elastomeric polyolefins, more preferably for elastomeric ethylene copolymers such as ethylene-propylene copolymers (EPR) and ethylene-propylene-diene terpolymers (EPDM), which can be processed at relatively low temperatures, much lower than the decomposition temperatures of the most common peroxide crosslinking agents.

Abstract translation: 一种用于回收包含至少一种可过氧化物固化的聚合物和至少一种过氧化交联剂的聚合物组合物的废物的方法，其包括将废物与至少一种适用于硫磺硫化的弹性体组合物的抗氧化剂混合在低于 所述至少一种过氧化物交联剂的分解温度。 这些抗氧化剂有效地猝灭过氧化物交联剂，以避免组合物在其加工过程中发生任何实质性的交联。 聚合物废物与抗氧化剂的混合在低于过氧化物交联剂的分解温度的温度下进行，以避免交联剂过早活化。 该方法特别适用于基于弹性体聚烯烃的组合物，更优选用于弹性体乙烯共聚物如乙烯 - 丙烯共聚物（EPR）和乙烯 - 丙烯 - 二烯三元共聚物（EPDM），其可以在比较低的温度下加工，远低于 最常见的过氧化物交联剂的分解温度。

公开(公告)号：US11031152B2

公开(公告)日：2021-06-08

申请号：US16837076

申请日：2020-04-01

Applicant: Prysmian S.p.A. ,  Politecnico di Milano

Inventor： Franco Galletti ,  Elena Roda ,  Giuseppe Merigo ,  Sergio Gutierrez

IPC: H01B7/295 ,  C08K3/016 ,  C08K3/22 ,  C08K5/00 ,  C08L23/06 ,  C09K21/02 ,  C09K21/06

Abstract: A flame-retardant electric cable has a core including at least one electric conductor, an electrically insulating coating and an outermost layer made from a substantially thermoplastic, low smoke zero halogen flame-retardant polymer composition. The composition includes a polymeric base made of at least one polyethylene homopolymer or copolymer having a density of 0.94 g/cm3 at most. The composition further includes 60-64% by weight of a metal hydroxide, at least 2% by weight of an ammonium coated montmorillonite having average particle dimensions of from 5 to 20 μm, and a polysiloxane.

公开(公告)号：US09605127B2

公开(公告)日：2017-03-28

申请号：US14441335

申请日：2012-11-14

Applicant: PRYSMIAN S.P.A.

Inventor： Franco Galletti ,  Vito Scrima

IPC: H01B7/00 ,  C08J11/28 ,  C08J11/06 ,  H01B7/17 ,  C08K5/00 ,  C08K5/14 ,  H01B3/44

CPC classification number: C08J11/28 ,  C08J11/06 ,  C08J2315/00 ,  C08J2323/08 ,  C08J2323/16 ,  C08K5/005 ,  C08K5/14 ,  C08L2207/20 ,  H01B3/441 ,  H01B7/0045 ,  H01B7/17 ,  Y02W30/701

Abstract: A process for recovering wastes of a polymeric composition including at least one peroxide-curable polymer and at least one peroxidic crosslinking agent, which includes compounding the wastes with at least one antioxidant agent suitable for sulfur-vulcanized elastomeric compositions, at a temperature lower than the decomposition temperature of the at least one peroxide crosslinking agent. The compounding of the polymeric wastes with the antioxidant agent is carried out at a temperature lower than the decomposition temperature of the peroxide crosslinking agent, so as to avoid any premature activation of the crosslinking agent. The process is particularly suitable for compositions based on elastomeric polyolefins, more preferably for elastomeric ethylene copolymers such as ethylene-propylene copolymers (EPR) and ethylene-propylene-diene terpolymers (EPDM), which can be processed at relatively low temperatures, much lower than the decomposition temperatures of the most common peroxide crosslinking agents.

公开(公告)号：US20210210254A1

公开(公告)日：2021-07-08

申请号：US17109243

申请日：2020-12-02

Applicant: Prysmian S.p.A.

Inventor： Elena RODA ,  Franco Galletti

IPC: H01B7/295 ,  C08L27/06

Abstract: A flame-retardant electric cable having a core comprising at least one electric conductor, an electrically insulating coating and an outermost layer made from a flame-retardant polymer composition comprising:
a) polyvinylchloride (PVC) as base polymer; b) 25-45% (70-110 phr) by weight of at least one metal hydroxide; c) 0.4-3% (about 1-8 phr) by weight of an optionally surface-treated montmorillonite having average particle dimensions of from 5 to 20 μm; d) 1.2-3% (about 3-8 phr) by weight of antimony trioxide; wherein the sum of the amount of montmorillonite and antimony trioxide is at least 5.5 phr and wherein the antimony trioxide and montmorillonite are in a ratio of from 1:0.1 to 1:2.5.

公开(公告)号：US10923246B2

公开(公告)日：2021-02-16

申请号：US16823430

申请日：2020-03-19

Applicant: Prysmian S.p.A. ,  Politecnico di Milano

Inventor： Franco Galletti ,  Elena Roda ,  Giuseppe Merigo

IPC: H01B7/02 ,  C08L23/06 ,  C08L23/12 ,  C08L23/20 ,  H01B3/30 ,  C08K3/22 ,  C08K3/34 ,  C08K5/5419

Abstract: A flame-retardant electric cable has a core including an electric conductor and an electrically insulating layer. The electrically insulating layer includes a flame-retardant polyolefin-based composition which includes, as base polymer, a mixture of at least two polyolefin homopolymers and/or copolymer wherein at least one is a low-density polyethylene copolymer having a density lower than 0.915 g/cm3. The flame-retardant polyolefin-based composition also includes calcinated kaolin in an amount greater than 3 phr, a metal hydroxide in an amount greater than 10 phr, and an alkyl or alkenyl alkoxy siloxane. The alkyl or alkenyl alkoxy siloxane is in an amount ratio of from 1:25 to 1:50 with respect to the sum of the amounts of calcinated kaolin and of the metal hydroxide.