Mutliple catalyst system for olefin polymerization and polymers produced therefrom
First Claim
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1. A branched olefin polymer prepared from a continuous process comprising the steps of:
- 1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 5% or less under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more at the selected polymerization conditions;
3) contacting the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins;
4) at a temperature of greater than 100°
C.; and
5) at a residence time of 120 minutes or less;
6) wherein the ratio of the first catalyst to the second catalyst is from 1;
1 to 50;
1;
7) wherein the activity of the catalyst components is at least 50 kilograms of polymer per gram of the catalyst compounds; and
wherein at least 80% of the olefins are converted to polymer,wherein the polymer has the following properties;
a) a Dot T-Peel of 1 Newton or more on Kraft paper;
b) an Mw of 10,000 to 100,000;
c) a branching index (g′
) of 0.4-0.98 measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 60,000, or
a branching index (g′
) of 0.4-0.95 measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 100,000; and
d) amorphous polymer segments and semi-crystalline polymer segments.
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Abstract
This invention relates to a polymer of one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ethylene, and polymerization processes for producing the same.
501 Citations
20 Claims
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1. A branched olefin polymer prepared from a continuous process comprising the steps of:
-
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 5% or less under selected polymerization conditions; 2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more at the selected polymerization conditions; 3) contacting the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins; 4) at a temperature of greater than 100°
C.; and5) at a residence time of 120 minutes or less; 6) wherein the ratio of the first catalyst to the second catalyst is from 1;
1 to 50;
1;7) wherein the activity of the catalyst components is at least 50 kilograms of polymer per gram of the catalyst compounds; and
wherein at least 80% of the olefins are converted to polymer,wherein the polymer has the following properties; a) a Dot T-Peel of 1 Newton or more on Kraft paper; b) an Mw of 10,000 to 100,000; c) a branching index (g′
) of 0.4-0.98 measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 60,000, or
a branching index (g′
) of 0.4-0.95 measured at the Mz of the polymer when the polymer has an Mw of 10,000 to 100,000; andd) amorphous polymer segments and semi-crystalline polymer segments. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification