Self-estinguishing cable releasing low quantitites of toxic...

Details Self-estinguishing cable releasing low quantitites of toxic... Self-estinguishing cable releasing low quantitites of toxic...

H - Electricity

01

B

H01B 7/02 (2006.01) B29C 47/02 (2006.01) B29C 47/04 (2006.01) G02B 6/44 (2006.01) H01B 3/42 (2006.01) H01B 7/295 (2006.01) H01B 13/06 (2006.01)

Patent

CA 2166049

A cable, self-estinguishing 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°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°C.

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