4-methyl-1-pentene polymer compositions

Details 4-methyl-1-pentene polymer compositions 4-methyl-1-pentene polymer compositions

C - Chemistry, Metallurgy

08

L

C08L 23/18 (2006.01) C08L 23/10 (2006.01) C08L 23/12 (2006.01) C08L 23/20 (2006.01) C08L 53/00 (2006.01) C08L 53/02 (2006.01)

Patent

CA 2175877

A 4-methyl-1-pentene polymer composition is prepared by melt mixing (A) a 4-methyl-1-pentene polymer, (B) a 1- butene polymer, (C) a propylene polymer, and (D) a triblock copolymer of polystyrene/ethylene-butylene copolymer/ polystyrene and/or a triblock copolymer of polystyrene/ ethylene-propylene copolymer/polystyrene. The composition has improved gas permeability, flexibility, and mechanical properties and is formed into a film which is heat sealable.

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