Amorphous propylene-ethylene copolymers
AssigneeEastman Chemical Company
InventorsMarc Stacey Somers, Bennett H Novak, Puthenkovilakom Rajesh Raja, Raymond Prescott Cottle
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Abstract
Amorphous propylene-ethylene copolymers are described herein that can include high amounts of ethylene and exhibit desirable softening points and needle penetrations. The desirable combinations of softening points and needle penetrations in these propylene-ethylene copolymers allow them to have a broad operating window. Due their broad operating window, the propylene-ethylene copolymers can be utilized in a wide array of applications and products, including hot melt adhesives.
Claims20
A copolymer comprising propylene and ethylene, wherein said copolymer has a softening point in the range of 90 to 121° C., and wherein said copolymer has a needle penetration of less than 35 dmm, wherein said copolymer comprises at least 14 weight percent of ethylene.
Dependencies are inferred from the claim text.