Propylene-ethylene/butene block copolymer

Details Propylene-ethylene/butene block copolymer Propylene-ethylene/butene block copolymer

1993-04-15

1994-10-04

Delmendo, Romulo H.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

525247, 525268, 525270, 525323, C08F29708

Patent

active

053525205

ABSTRACT:
Disclosed is a propylene-ethylene/butene block copolymer, comprising a polybutene component block-copolymerized with a propylene-ethylene random copolymer component, or with a polypropylene component and a propylene-ethylene random copolymer component, the content of the polybutene component being 0.1 to 10% by weight, the total content of the propylene-ethylene random copolymer component and the polypropylene component being 99.9 to 90% by weight and the content of the polypropylene component being 0 to 30% by weight, wherein the propylene-ethylene random copolymer component is composed of a copolymer comprising 15 to 80 mole % of monomer units based on ethylene and 85 to 20 mole % of monomer units based on propylene, and said block copolymer is a powder having a high molecular weight.

REFERENCES:
patent: 3378606 (1968-04-01), Kontos
patent: 3509056 (1970-04-01), Shepherd
patent: 4481336 (1984-11-01), Fujii et al.

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