06197886 is referenced by 37 patents and cites 22 patents.

The present invention relates to compositions containing impact copolymer compositions that are a blend of a propylene polymer phase and a rubber phase in which the ethylene content of the rubber phase is between about 75 to about 95% by weight. The rubber content of the impact copolymer composition ranges between about 35% by weight to about 60% by weight. The crystallinity of the high ethylene-content rubber phase provides overall improvement in film properties and also balance of film tensile properties in the machine and transverse directions. Compared to traditional impact copolymer compositions having a low ethylene content-rubber phase, the inventive copolymers have significantly enhanced melting and crystallization peaks due to polyethylene-like crystallinity in the rubber phase.

Title
Compositions containing impact copolymers made from a blend of a homopolymer phase and a rubber phase having a high ethylene content
Application Number
8/957602
Publication Number
6197886 (B1)
Application Date
October 24, 1997
Publication Date
March 6, 2001
Inventor
James Douglas McCullough Jr
Houston
TX, US
Ananda Mohan Chatterjee
Katy
TX, US
Agent
P A Doody
US
Assignee
Union Carbide Chemicals & Plastics Technology Corporation
CT, US
IPC
C08L 23/12
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