Block copolymer of polyalkylene and halogenated polystyrene

Details Block copolymer of polyalkylene and halogenated polystyrene Block copolymer of polyalkylene and halogenated polystyrene

C - Chemistry, Metallurgy

08

F

400/2053

C08F 299/00 (2006.01) C08F 8/20 (2006.01)

Patent

CA 2026842

ABSTRACT OF THE DISCLOSURE A block copolymer of polyalkylene and halogenated polystyrene comprises the formula: S'-A-(A-S')m in which m is 0, 1, 2, 3 or 4, A is a saturated polyalkylene, and S' is a nuclear brominated polystyrene having from about 0.5 to about 5 bromines per styrene unit. The polystyrene blocks are substantially free of halogen other than bromine and chlorine, and the polyalkylene is substantially free of halogen. The compositions retain the elastomeric properties of the non-halogenated form of the compounds while having significantly reduced flammability.

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