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    • 22. 发明授权
    • Self-extinguishing cable releasing low quantities of toxic and corrosive
smokes and gases, and process for producing the same
    • 自熄电缆释放少量有毒和腐蚀性烟雾和气体,以及其生产过程
    • US5644105A
    • 1997-07-01
    • US568352
    • 1995-12-06
    • Luca Castellani
    • Luca Castellani
    • G02B6/44H01B3/42H01B7/295H01B7/00
    • H01B3/42G02B6/4436H01B7/295Y10T428/2947
    • A cable, self-extinguishing and releasing low quantities of toxic and corrosive smokes and gases, for optical or electrical applications, comprises a coating (3) including an outer layer (5) consisting of a polymeric mixture including 50 to 80 parts (w/w) of an aromatic polyester of the isophthalic and terephthalic acids, with bisphenol A and 20 to 50 parts (w/w) of a polyether-polyester block elastomer copolymer having a Shore hardness D greater than 50 and a Vicat softening point higher than 170.degree. C., as well as a coaxial inner (4) layer comprising an polyester thermoplastic elastomer including a quantity of aromatic groups such that its Shore hardness D is equal to at least 45 and such that the delamination shear force necessary to separate said layers (4, 5) from one another is equal to at least 2,000 g. after ageing in oil ASTM Nr. 3 for 2 hours at 100.degree. C.
    • 一种用于光学或电气应用的自熄灭和释放少量有毒和腐蚀性烟雾和气体的电缆包括涂层(3),其包括由聚合物混合物组成的外层(5),所述聚合物混合物包括50至80份(w / w)的间苯二甲酸和对苯二甲酸的芳族聚酯与双酚A和20至50份(w / w)的肖氏硬度D大于50且维卡软化点高于170的聚醚 - 聚酯嵌段弹性体共聚物 以及包含一定量芳族基团的聚酯热塑性弹性体的同轴内层(4)层,使得其肖氏硬度D等于至少45°,并且使得分离所述层所需的分层剪切力 4,5)彼此等于至少2,000g。 在油中老化后,ASTM Nr。 3在100℃下2小时