H - Electricity – 01 – B
Patent
H - Electricity
01
B
400/3017, 400/70
H01B 7/295 (2006.01) C08K 3/22 (2006.01) H01B 3/30 (2006.01) H01B 3/42 (2006.01) H01B 3/44 (2006.01) H01B 3/46 (2006.01)
Patent
CA 1318743
27065-163 ABSTRACT A transmission line, for example an electrical wire or optical fibre, has a layer of insulating or jacketing material that is formed from a composition comprising: (a) a polyamide, polyester, polyphenylene oxide, silicone or alkene/vinyl acetate polymer; and (b) from 10 to 30% by weight based on the total weight of the composition of magnesium hydroxide, the magnesium hydroxide having a specific surface area A and a weight average particle size S such that the ratio of the specific surface area to the average particle size (A/S) is at least 8 x 109 mkg-1. The choice of magnesium hydroxide has been found to give improved smoke reduction in electrical insulation or jacketing materials based on the above polymers as compared with other polymers.
566142
Collett Darren John
Gentilcore Giovanni
Smith Timothy Stephen
Fetherstonhaugh & Co.
Raychem Limited
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