Butene-1 copolymers and process for their preparation
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United States of America Patent
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May 17, 2011
Grant Date -
Jul 13, 2006
app pub date -
Nov 3, 2003
filing date -
Nov 28, 2002
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Abstract
The present invention relates to butene-1 copolymers containing up to 40% by mol of ethylene and/or propylene derived characterized by the following properties: d) Product of the reactivity ratios r1·r2≦2; e) Content of butene-1 units in form of isotactic pentads (mmmm)>98%; and f) absence of 4,1 insertions of butene units.
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