公开(公告)号：US06552112B1

公开(公告)日：2003-04-22

申请号：US09488854

申请日：2000-01-21

申请人： Eduardo Grizante Redondo ,  Franco Peruzzotti ,  Diego Tirelli ,  Antonio Zaopo ,  Enrico Albizzati ,  Luca Castellani

发明人： Eduardo Grizante Redondo ,  Franco Peruzzotti ,  Diego Tirelli ,  Antonio Zaopo ,  Enrico Albizzati ,  Luca Castellani

IPC分类号： C08K320

CPC分类号： H01B7/295 ,  C08K3/22 ,  C08K2003/2217 ,  C08K2201/003 ,  C08K2201/006 ,  C08L23/0815 ,  C08L23/10 ,  C08L23/14 ,  C08L23/16 ,  C08L51/06 ,  C08L2201/02 ,  C08L2203/202 ,  C08L2314/06 ,  H01B3/441 ,  C08L23/02 ,  C08L2666/04 ,  C08L2666/24

摘要： A flame-retardant composition includes a crystalline propylene homopolymer or copolymer, a copolymer of ethylene with at least one alpha-olefin having from 3 to 12 carbon atoms, and optionally with a diene, the copolymer of ethylene being characterized by a composition distribution index greater than 45%, the index being defined as a weight percentage of copolymer molecules having an alpha-olefin content within 50% of an average total molar content of alpha-olefin, and natural magnesium hydroxide in amounts such as to impart flame-retardant properties. A related cable with self-extinguishing properties includes a conductor and a flame-retardant coating. The flame-retardant coating includes the flame-retardant composition. A related method for manufacturing a cable having improved mechanical properties and enhanced fire resistance includes the steps of preparing a polymer mixture with flame-retardant properties and extruding the mixture on a conductor optionally pre-coated with an insulating layer, in order to obtain a flame-retardant coating.

摘要翻译： 阻燃组合物包括结晶丙烯均聚物或共聚物，乙烯与至少一种具有3至12个碳原子的α-烯烃的共聚物和任选与二烯的共聚物，乙烯的共聚物的特征在于组成分布指数更大 超过45％，该指数定义为α-烯烃含量在α-烯烃的平均总摩尔含量的50％以内的共聚物分子的重量百分比，以及赋予阻燃性能的量的天然氢氧化镁。 具有自熄性能的相关电缆包括导体和阻燃涂层。 阻燃涂料包括阻燃组合物。 用于制造具有改进的机械性能和增强的耐火性的电缆的相关方法包括制备具有阻燃性能的聚合物混合物并将混合物挤出在任选地预涂覆有绝缘层的导体上以获得火焰的步骤 易损涂层。

公开(公告)号：US6110592A

公开(公告)日：2000-08-29

申请号：US961160

申请日：1992-10-15

申请人： Redondo Eduardo Grizante ,  Antonio Zaopo ,  Luca Castellani

发明人： Redondo Eduardo Grizante ,  Antonio Zaopo ,  Luca Castellani

IPC分类号： C08L67/03 ,  H01B3/42 ,  B32B15/02 ,  B32B15/08 ,  G02B6/02

CPC分类号： H01B3/42 ,  C08L67/03 ,  Y10T428/2933 ,  Y10T428/294 ,  Y10T428/2962

摘要： Method for the preparation of a polymeric mixture for cable insulators and coatings and sheaths for optic fiber cables; polymeric mixture thus produced and the cables containing it.The method is characterized in that one completely mixes, up to the obtainment of a homogeneous composition, (i) from 50 to 80 parts (w/w) of a first thermoplastic polymer which is amorphous, highly resistant to flames and combustion, and consists of an aromatic polyester of isophthalic and terephthalic acid with bisphenol A, and (ii) from 20 to 50 parts (w/w) of at least a second thermoplastic polymer consisting of an elastomeric polyether-ester block copolymer, having a Shore D hardness greater than 50 and a Vicat softening point greater than 170.degree. C., for a mixing time less than 10 minutes.

摘要翻译： 制备电缆绝缘子聚合物混合物的方法和用于光纤电缆的涂层和护套; 聚合物混合物和包含它的电缆。 该方法的特征在于，完全混合，直到获得均匀的组合物，（i）50至80份（w / w）的第一热塑性聚合物，其为无定形的，高度耐火焰和燃烧，并且包含 的间苯二甲酸和对苯二甲酸与双酚A的芳族聚酯，和（ii）20至50份（w / w）的至少一种第二热塑性聚合物，其由具有肖氏D硬度的弹性体聚醚 - 酯嵌段共聚物组成 维卡软化点大于170℃，混合时间小于10分钟。