公开(公告)号：US06766091B2

公开(公告)日：2004-07-20

申请号：US10603710

申请日：2003-06-26

申请人： Reinhard Beuth ,  Michael Schlobohm ,  Uwe Kannengiesser ,  Franz-Erich Baumann ,  Herald Haeger

发明人： Reinhard Beuth ,  Michael Schlobohm ,  Uwe Kannengiesser ,  Franz-Erich Baumann ,  Herald Haeger

IPC分类号： G02B622

CPC分类号： G02B6/443 ,  G02B1/048 ,  G02B6/02033 ,  G02B6/4436 ,  C08L77/00

摘要： An optical cable, which is flame-retardant, and has excellent adhesion of the protective covering to the fiber cladding and uniform thickness of the fiber cladding, contains a polymer optical conductor containing a fiber core; a single-layer or multi-layer fiber cladding; an inner external layer which adheres to the fiber cladding with a peel force of at least 50 N; and an outer external layer which adheres to the inner external layer with a peel force of not more than 30 N. The inner external layer contains a molding composition having a first polyamide selected from a) PA 11, b) PA 12, c) PA 1012, d) PA 1212, e) a copolyamide of at least two of PA 11, PA 12, PA 1012 and PA 1212, said copolyamide containing not more than 30 mol % of a comonomer, and f) mixtures thereof. The first polyamide contains at least 50 &mgr;eq/g of amino end groups. The first molding composition has a zero-shear viscosity of from 400 to 6000 Pas. The outer external layer contains a second molding composition which has the following i)-iii): i) from 20 to 95% by weight of a second polyamide selected from a) PA 11, b) PA 12, c) PA 1012, d) PA 1212, e) a copolyamide of at least two of PA 11, PA 12, PA 1012 and PA 1212, said copolyamide containing not more than 30 mol % of a comonomer, f) a polyetheramide of at least one of a)-e), and g) mixtures thereof, ii) from 5 to 45% by weight of a flame retardant, and iii) from 0 to 60% by weight of an impact modifier.

摘要翻译： 阻燃的光缆和保护覆盖层与纤维包层的粘附性优异，纤维包层的厚度均匀，包含含有纤维芯的聚合物光导体; 单层或多层纤维包层; 内部外层，其剥离力至少为50N，附着于纤维包层; 外部外层以不超过30N的剥离力附着于内部外层。内部外层含有具有选自a）PA 11，b）PA 12，c）PA中的第一种聚酰胺的成型组合物 1012，d）PA1212，e）PA11，PA12，PA1012和PA1212中的至少两种的共聚酰胺，所述共聚酰胺含有不大于30mol％的共聚单体，和f）其混合物。 第一种聚酰胺含有至少50个mueq / g的氨基端基。 第一模塑组合物的零剪切粘度为400至6000Pa·s。 外部外层包含具有以下i）-iii）的第二模塑组合物：i）20至95重量％的选自a）PA 11，b）PA 12，c）PA 1012，d ）PA1212，e）PA 11，PA 12，PA 1012和PA 1212中的至少两种的共聚酰胺，所述共聚酰胺含有不超过30mol％的共聚单体，f）至少一种a） - e）和g）其混合物，ii）5至45重量％的阻燃剂，和iii）0至60重量％的抗冲改性剂。