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AssigneeEastman Chemical Company
InventorsTerri Roxanne Carvagno, Susana Marques, Ming Allison Yuan, Da Yu Vincent Zhang, Boon Hui Janice Ang, Marc Stacey Somers, Raymond Prescott Cottle, Bennett H. Novak, Puthenkovilakom Rajesh Raja
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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.
An adhesive comprising at least one propylene-ethylene copolymer and at least one polyolefin, wherein said at least one propylene-ethylene copolymer comprises at least 10 weight percent of ethylene, a softening point of at least 99° C., and a glass transition temperature (Tg) in the range of −60 to 20° C.
An adhesive comprising at least one propylene-ethylene copolymer and at least one polyolefin, wherein said at least one propylene-ethylene copolymer comprises a polydispersity of 3 to 25.
Dependencies are inferred from the claim text.