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AssigneeEvonik Operations GmbH
InventorsSebastian Babik, Steffen Cepa, André Ebbers, Klaus Behrendt, Jessica Vieth, Katharina Rawert, Gabriele Wrobel
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The invention relates to amorphous poly-alpha-olefins, which are characterized in that said amorphous poly-alpha-olefins have a viscosity at 190° C. of less than 5000 mPas, a molar mass distribution (Mw/Mn) of 3 to 8, a quotient Mz/Mw of less than or equal to 3.0 and a quotient Mz/Mn of less than 21.0. The invention further relates to a method for producing degraded amorphous poly-alpha-olefins, in particular the amorphous poly-alpha-olefins according to the invention, and to the use of the amorphous polyalpha-olefins according to the invention or produced according to the invention in hot-melt adhesive compositions.
An amorphous poly-alpha-olefin, wherein the amorphous poly-alpha-olefin has a Mz of 145100 g/mol to 249500 g/mol, a viscosity at 190° C. of less than 5000 mPas, a molecular weight distribution (Mw/Mn) of 3 to 8, a quotient of Mz/Mw of not more than 3.0, and a quotient of Mz/Mn of less than 21.0.
A process for producing a degraded amorphous poly-alpha-olefin having a Mz of 145100 g/mol to 249500 g/mol, wherein an amorphous poly-alpha-olefin having a viscosity at 190° C. of not less than 5000 mPas, is subjected to a free-radical degradation, the degradation reaction being conducted over a period of 15 seconds to 1200 seconds.
Dependencies are inferred from the claim text.