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    • 91. 发明授权
    • Polymeric optical conductors
    • 聚合物光导体
    • US06766091B2
    • 2004-07-20
    • US10603710
    • 2003-06-26
    • Reinhard BeuthMichael SchlobohmUwe KannengiesserFranz-Erich BaumannHerald Haeger
    • Reinhard BeuthMichael SchlobohmUwe KannengiesserFranz-Erich BaumannHerald Haeger
    • G02B622
    • G02B6/443G02B1/048G02B6/02033G02B6/4436C08L77/00
    • 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.
    • 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。