4-Methyl-1-pentene polymer compositions

Details 4-Methyl-1-pentene polymer compositions 4-Methyl-1-pentene polymer compositions

1996-05-06

1998-08-04

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 95, 525240, C08L 2310, C08L 5302

Patent

active

057894841

ABSTRACT:
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.

REFERENCES:
patent: 4079099 (1978-03-01), Gergen et al.
patent: 4546150 (1985-10-01), Shigemoto
patent: 4894417 (1990-01-01), Holden
patent: 4988558 (1991-01-01), Shigemoto
patent: 5025057 (1991-06-01), Shigemoto
patent: 5382620 (1995-01-01), Nagase et al.

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