	US 12,012,527 B2
	Polyolefin-based hot melt adhesive composition
Roberta Marchini, Ferrara (IT); Silvia Guerra, Ferrara (IT); Stefano Pasquali, Ferrara (IT); Ankur Rastogi, Eschborn (DE); and Stefano Spataro, Ferrara (IT)
Assigned to Basell Poliolefine Italia S.r.l., Milan (IT)
Appl. No. 17/261,100
Filed by BASELL POLIOLEFINE ITALIA S.R.L., Milan (IT)
PCT Filed Jul. 15, 2019, PCT No. PCT/EP2019/068940 § 371(c)(1), (2) Date Jan. 18, 2021, PCT Pub. No. WO2020/016144, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 18184148 (EP), filed on Jul. 18, 2018.
Prior Publication US 2021/0309892 A1, Oct. 7, 2021
Int. Cl. C09J 123/20 (2006.01); C08L 23/20 (2006.01); C09J 123/08 (2006.01); C08L 23/08 (2006.01)

CPC C09J 123/20 (2013.01) [C08L 23/0815 (2013.01); C08L 23/20 (2013.01); C09J 123/0815 (2013.01)]

11 Claims

1. A hot melt adhesive composition comprising:

(A) 25-75 wt % of a copolymer of butene-1 with at least one comonomer selected from the group consisting of ethylene, propylene, C5-C10 alpha-olefins and mixtures thereof, having copolymerized comonomer content of 0.5-5.0 wt % and a melt flow rate (MFR) measured according to ISO 1133 (190° C., 2.16 kg) higher than 2000 g/10 min; and

(B) 75-25 wt % of at least one additional component selected from the group consisting of waxes, resins, plasticizers, additional polymers and mixtures thereof,

wherein amounts of A) and B) are relative to a total weight of A)+B).