06642316 is referenced by 128 patents and cites 33 patents.

Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable alpha-olefin sequences. In a preferred embodiment, improved thermoplastic polymer blends are provided comprising from about 35% to about 85% isotactic polypropylene and from about 30% to about 70% of an ethylene and propylene copolymer, wherein said copolymer comprises isotactically crystallizable propylene sequences and is predominately propylene. The resultant blends manifest unexpected compatibility characteristics, increased tensile strength, and improved process characteristics, e.g., a single melting point.

Title
Elastic blends comprising crystalline polymer and crystallizable polym
Application Number
9/342854
Publication Number
6642316 (B1)
Application Date
June 29, 1999
Publication Date
November 4, 2003
Inventor
Edmund J Stachowski
Houston
TX, US
Periagaram Periagaram
Kingwood
TX, US
Charles Cozewith
Bellaire
TX, US
Sudhin Datta
Houston
TX, US
Agent
Paige Schmidt
US
Mandi B Milbank
US
Stephen D Prodnuk
US
Assignee
ExxonMobil Chemical Patents
TX, US
IPC
C08L 23/12
View Original Source