Compositions – Fire retarding – For solid synthetic polymer and reactants thereof
Patent
1985-03-01
1987-06-09
Terapane, John F.
Compositions
Fire retarding
For solid synthetic polymer and reactants thereof
428921, 174121A, 106 1811, 106 1814, 106 1826, C09K 328
Patent
active
046718966
ABSTRACT:
A flame-retardant composition is prepared by mixing 100 parts by weight of a rubber or plastics free from any halogen with about 50 to about 200 parts by weight of magnesium hydroxide having an average particle diameter of about 0.3 to about 2 .mu.m and about 5 to about 50 parts by weight of carbon black powder having an oil absorption of about 0.5 to about 2.0 ml/g, and then cross-linking the mixture with an organic peroxide, sulfur, or a sulfur compound as a vulcanizing agent. By forming an electrical insulation and/or a sheath of the flame-retardant composition, there is provided a flame-retardant cable of the type including a cable core composed of an electric conductor coated with the electrical insulation or a plurality of such cores twisted together and covered, together with a filler, with the sheath. The flame-retardant composition and the flame-retardant cable using this composition possess high flame resistance while possessing acceptable mechanical properties and will not evolve any hydrogen halide or other noxious gas if burnt. With less smoke emission than conventional cables on fire, the composition and the cable are less hazardous.
REFERENCES:
patent: 4209566 (1980-06-01), Betts et al.
patent: 4396730 (1983-08-01), Imahashi
patent: 4430470 (1984-02-01), Tamauchi et al.
patent: 4505850 (1985-03-01), Pearson
patent: 4549041 (1985-10-01), Shingo et al.
Hasegawa Masatake
Kobayashi Hirotada
Matsuda Takao
Shingo Yoshioki
Sunazuka Hideo
Fujikura Ltd.
Terapane John F.
Wolffe Susan
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