Preparation of multimodal, high density, ethylene...

Details Preparation of multimodal, high density, ethylene... Preparation of multimodal, high density, ethylene...

2011-05-31

2011-05-31

Choi, Ling-Siu (Department: 1762)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

active

07951883

ABSTRACT:
Disclosed is a multimodal, high density, homopolyethylene barrier resin. The resin is preferably made by a multistage process. The process comprises a first stage in which ethylene is homopolymerized in the presence of a Ziegler-Natta catalyst, organoaluminum cocatalyst, alkoxysilane modifier, and hydrogen. The reaction mixture from the first stage is devolatilized to remove all or substantially all of the hydrogen. The polymerization continues in a second stage wherein ethylene is added to the devolatilized reaction mixture to produce the barrier resin. The barrier resin provides films with improved barrier properties.

REFERENCES:
patent: 4223118 (1980-09-01), Tsubaki et al.
patent: 4357448 (1982-11-01), Tsubaki et al.
patent: 4464518 (1984-08-01), Iwabuchi et al.
patent: 4511669 (1985-04-01), Gessell
patent: 0 574 821 (1998-11-01), None

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