Properties of polyolefin blends and their manufactured articles

Details Properties of polyolefin blends and their manufactured articles Properties of polyolefin blends and their manufactured articles

2007-12-18

2007-12-18

Nutter, Nathan M. (Department: 1711)

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

Synthetic resins

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

C525S232000, C525S240000

Reexamination Certificate

active

11264904

ABSTRACT:
A polymer blend and a method of making the same are provided. The polymer blend includes an ethylene-propylene (C2-C3) random copolymer and a modifier selected from the group consisting of a metallocene-catalyzed polyethylene-based copolymer, a metallocene-catalyzed polyethylene-based terpolymer, and a syndiotactic polypropylene homopolymer. The polymer blend may also include an organic peroxide for visbreaking the polymer blend. An end use article is made from the foregoing polymer blend. The end use article may be, for example, a film, an injection molded article, a compression molded article, a thermoformed article, and a fiber. The end use article is desirably a film having an Elmendorf tear strength of at least about 300 g/ply in the machine and transverse directions.

REFERENCES:
patent: 7122601 (2006-10-01), Musgrave et al.

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