High density homopolymer blends

Details High density homopolymer blends High density homopolymer blends

2005-08-18

2010-06-15

Nutter, Nathan M. (Department: 1796)

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

Synthetic resins

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

C525S193000, C525S194000

Reexamination Certificate

active

07737220

ABSTRACT:
A blend of ethylene homopolymers contains at least one blend component having a very low molecular weight and a narrow molecular weight distribution. The blend has surprisingly high density and low hexane extractables. The blend is suitable for the manufacture of a wide variety of plastic goods including extruded goods and molded goods. Plastic film prepared from the blends of this invention have a low Water Vapor Transmission Rate (“WVTR”).

REFERENCES:
patent: 6372864 (2002-04-01), Brown
patent: 6419966 (2002-07-01), Davis
patent: 6689847 (2004-02-01), Mawson et al.
patent: 6770520 (2004-08-01), Chuang et al.
patent: 7153909 (2006-12-01), Van Dun et al.
patent: 2003/0088021 (2003-05-01), Van Dun et al.
James C. Randall, A Review of High Resolution Liquid 13Carbon Nuclear Magnetic Resonance Characterizations of Ethylene-Based Polymers, JMS-REV. Macromol. Chem. Phys., C29(2 & 3), 201-317 (1989), Marcel Dekker, Inc.

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