	US 11,878,492 B2
	Tackified hotmelt adhesive composition
Torsten Lindner, Kronberg (DE); Matthias Morand, Sulzbach (DE); Christian Neu, Eppstein (DE); Robert Haines Turner, Cincinnati, OH (US); and Benedikt Hartmut Hermann Peter Wimmer, Zurich (CH)
Assigned to The Procter and Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Oct. 29, 2021, as Appl. No. 17/514,037.
Claims priority of provisional application 63/107,492, filed on Oct. 30, 2020.
Prior Publication US 2022/0135845 A1, May 5, 2022
Int. Cl. B32B 27/12 (2006.01); A61L 15/58 (2006.01); B32B 5/02 (2006.01); B32B 7/12 (2006.01); B32B 37/12 (2006.01); C09J 123/14 (2006.01)

CPC B32B 27/12 (2013.01) [A61L 15/585 (2013.01); B32B 5/022 (2013.01); B32B 7/12 (2013.01); B32B 37/1207 (2013.01); C09J 123/14 (2013.01); B32B 2037/1215 (2013.01); B32B 2555/02 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01)]

18 Claims

1. A hotmelt composition comprising:

a low molecular weight metallocene-catalyzed polymer having a peak molecular weight below 130,000 g/mol, wherein the peak molecular weight is measured according to the Peak Molecular Weight (Mp) Measurement Method;

a high molecular weight polyolefin having a peak molecular weight of from about 130,000 g/mol to about 700,000 g/mol, according to the Peak Molecular Weight (Mp) Measurement Method;

an amorphous polyolefin having an enthalpy of crystallization of less than 10 J/g, wherein the enthalpy of crystallization is measured according to the Enthalpy of Crystallization Test Method; and

a tackifier;

wherein the low molecular weight metallocene-catalyzed polymer comprises:

a first low molecular weight metallocene-catalyzed propylene-ethylene copolymer having an enthalpy of crystallization below 20 J/g; and

a second low molecular weight metallocene-catalyzed propylene-ethylene copolymer having an enthalpy of crystallization above 20 J/g.