Self-extinguishing cable releasing low quantities of toxic and c

Electricity: conductors and insulators – Conduits – cables or conductors – Insulated

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15624412, 427118, 427120, 428383, 525437, 525444, H01B 700

Patent

active

056441053

ABSTRACT:
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.

REFERENCES:
patent: 4206011 (1980-06-01), Kanotz et al.
patent: 5093435 (1992-03-01), Harris et al.
patent: 5256482 (1993-10-01), Yamanouchi et al.
patent: 5521009 (1996-05-01), Ishikawa et al.

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