Self-extinguishing cable releasing low quantities of toxic...

H - Electricity – 01 – B

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H01B 3/42 (2006.01) C08K 5/00 (2006.01) G02B 6/44 (2006.01) H01B 3/46 (2006.01) H01B 7/28 (2006.01) H01B 7/295 (2006.01)

Patent

CA 2211647

A self-extinguishing cable releasing low quantities of toxic and corrosive smokes and gases for optical or electrical applications, comprises a self-extinguishing coating, releasing low quantities of toxic and corrosive fumes and gases, comprising: a) a polymer base including from 30 to 60 parts of a thermoplastic polyester and from 40 to 70 parts of a silicone- polyimide polymer; b) at least 0.5 parts of an anti-hydrolysis agent of the thermoplastic polyester and at least 0.25 parts of a selected antioxidant agent per each 100 parts by weight of the polymer base. Advantageously, the antioxidant agent is so selected that the coating has a value of percent elongation at break not lower than 80% of the starting value and in any case not lower than 250%, after a 10-day aging at 175°C in a hot air oven.

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