High-melting polyolefin copolymer elastomers, catalysts and methods of synthesis
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United States of America Patent
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Feb 11, 2003
Grant Date -
Oct 25, 2001
app pub date -
Dec 29, 2000
filing date -
Jan 9, 1998
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Abstract
This invention relates to high melting polyolefin copolymers suitable as thermoplastic elastomers and catalysts and methods for their synthesis. These elastomeric olefin copolymers are characterized by a mole fraction of crystallizable component X.sub.c from about 30 to about 99%; low glass transition temperatures, below -20.degree. C., and typically below -50.degree. C.; melting points above about 90.degree. C.; high molecular weights; a molecular weight distribution M.sub.W /M.sub.n r.sub.f the polymer can be characterized as multiblock; where r.sub.i
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