公开(公告)号：US20080255261A1

公开(公告)日：2008-10-16

申请号：US12150647

申请日：2008-04-30

申请人： Dharmini Kshama Josephine Motha ,  Achim Hesse ,  James Elliott Robinson

发明人： Dharmini Kshama Josephine Motha ,  Achim Hesse ,  James Elliott Robinson

IPC分类号： C08L23/12

CPC分类号： C08J9/0061 ,  C08J2323/10 ,  C08J2423/00 ,  C08L2314/06 ,  C08L2666/02 ,  C09J123/12 ,  H01B3/441

摘要： Insulating foam composition for insulation on communication cables, contains 20-95 wt % of an unmodified propylene polymer, having a melt index of 0.1 to 10 g/10 min at 230° C./2.16 kg; and 5-80 wt % of a modified propylene polymer, with a propylene content of up to 100 wt %, and a melt index of 0.05 to 10 g/10 min at 230° C./2.16 kg. The unmodified propylene polymer is a propylene homopolymer; a propylene copolymer of propylene and ethylene or an α-olefin; a polyolefin mixture containing a crystalline copolymer of propylene and ethylene or an α-olefin, and an elastic copolymer containing ethylene and propylene or an α-olefin; or an amorphous, non-isotactic propylene polymer such as a propylene homopolymer, a propylene copolymer containing propylene and an α-olefin. The modified propylene polymer is a polypropylene modified by reaction with a bismaleimido compound, ionizing radiation, or a peroxide.

摘要翻译： 在通信电缆上绝缘的绝缘泡沫组合物含有20-95wt％的未改性丙烯聚合物，在230℃/ 2.16kg下熔体指数为0.1-10g / 10min; 和5-80wt％的丙烯含量高达100wt％的改性丙烯聚合物，在230℃/ 2.16kg下的熔体指数为0.05-10g / 10min。 未改性的丙烯聚合物是丙烯均聚物; 丙烯和乙烯或α-烯烃的丙烯共聚物; 含有丙烯和乙烯或α-烯烃的结晶共聚物的聚烯烃混合物和含有乙烯和丙烯或α-烯烃的弹性共聚物; 或无定形非全同立构丙烯聚合物如丙烯均聚物，含有丙烯和α-烯烃的丙烯共聚物。 改性丙烯聚合物是通过与双马来酰亚胺化合物，电离辐射或过氧化物反应而改性的聚丙烯。