Multiple catalyst system for olefin polymerization and polymers produced therefrom
First Claim
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1. An adhesive comprising an olefin polymer composition comprising:
- a) a first amorphous polymer having a crystallinity of 5% or less, wherein crystallinity is determined according to ASTM E 794-85, prepared with a first catalyst; and
b) a second crystalline polymer, differing in chemical and physical properties from the first polymer, having a crystallinity of 20% or more, wherein crystallinity is determined according to ASTM E 794-85, prepared with a second catalyst; and
where the olefin polymer composition has;
a) a Dot T-Peel of 1 Newton or more on Kraft paper;
b) an Mw of at least 7,000 to 80,000;
c) a branching index (g′
) of from 0.4 to 0.90 measured at the Mz of the polymer composition; and
d) a crystallinity of between 5 and 40%, wherein crystallinity is determined according to ASTM E 794-85.
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Abstract
This invention relates to an adhesive comprising an olefin polymer composition comprising a first amorphous polymer having a crystallinity of 5% or less, prepared with a first catalyst; and a second crystalline polymer, differing in chemical and physical properties from the first polymer, having a crystallinity of 20% or more, prepared with a second catalyst; and where the olefin polymer composition has a Dot T-Peel of 1 Newton or more on Kraft paper; an Mw of at least 7,000 to 80,000; a branching index (g′) of from 0.4 to 0.90 measured at the Mz of the polymer composition; and a crystallinity of between 5 and 40%.
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Citations
23 Claims
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1. An adhesive comprising an olefin polymer composition comprising:
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a) a first amorphous polymer having a crystallinity of 5% or less, wherein crystallinity is determined according to ASTM E 794-85, prepared with a first catalyst; and b) a second crystalline polymer, differing in chemical and physical properties from the first polymer, having a crystallinity of 20% or more, wherein crystallinity is determined according to ASTM E 794-85, prepared with a second catalyst; and where the olefin polymer composition has; a) a Dot T-Peel of 1 Newton or more on Kraft paper; b) an Mw of at least 7,000 to 80,000; c) a branching index (g′
) of from 0.4 to 0.90 measured at the Mz of the polymer composition; andd) a crystallinity of between 5 and 40%, wherein crystallinity is determined according to ASTM E 794-85. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification