C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 27/16 (2006.01) C08L 53/00 (2006.01) H01B 3/44 (2006.01)
Patent
CA 2187219
Insulated wire and cable insulated by compositions containing a block copolymer in which one of the blocks is a crystalline polyvinylidene fluoride block and the other block is an amorphous block containing randomly copolymerized units derived from vinylidene fluoride and a comonomer, e.g. hexafluoropropylene. Particularly useful novel insulating compositions contain 53 to 90 % of the block copolymer, 10 to 42 % of polyvinylidene fluoride and 0 to 10 % of other polymers.
L'invention se rapporte à un fil d'acier et un câble isolés au moyen de compositions contenant un copolymère bloc dans lequel un des blocs est un bloc de fluorure de polyvinylidène cristallin et l'autre bloc est un bloc amorphe contenant des unités copolymérisées de manière aléatoire, dérivées du fluorure de vinylidène et d'un comonomère, par ex., l'hexafluoropropylène. De nouvelles compositions isolantes particulièrement utiles contiennent 53 à 90 % du copolymère bloc, 10 à 42 % de fluorure de polyvinylidène et 0 à 10 % d'autres polymères.
Fetherstonhaugh & Co.
Raychem Corporation
Tyco Electronics Corporation
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