	US 12,264,233 B2
	Compositions containing low molecular weight propylene-based polymers and an olefin multi-block copolymer
Allan Walter Mclennaghan, Lachen (CH); and Yi Jin, Missouri City, TX (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/047,575
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Jun. 12, 2019, PCT No. PCT/US2019/036751 § 371(c)(1), (2) Date Oct. 14, 2020, PCT Pub. No. WO2019/241374, PCT Pub. Date Dec. 19, 2019.
Claims priority of provisional application 62/684,564, filed on Jun. 13, 2018.
Prior Publication US 2021/0115232 A1, Apr. 22, 2021
Int. Cl. C08L 23/08 (2006.01); C08F 210/16 (2006.01); C08L 23/0807 (2025.01)

CPC C08L 23/0815 (2013.01) [C08F 210/16 (2013.01); C08F 2500/02 (2013.01); C08F 2500/03 (2013.01); C08F 2500/07 (2013.01); C08F 2500/12 (2013.01); C08F 2500/17 (2013.01); C08F 2500/22 (2013.01); C08L 2207/06 (2013.01)]

14 Claims

1. A composition comprising the following components:

A) from 5.0 wt % to 25 wt % of a propylene/ethylene copolymer, based on weight of the composition, that has a density ≤0.880 g/cc, and a Mw/Mn from 2.00 to 4.00 and a melt viscosity, at 177° C.≤80,000 mPa·s;

B) olefin multi-block copolymer that has a density ≤0.890 g/cc and a melt index (I2)≥0.5 g/10 min;

wherein the composition comprises ≤0.10 wt % of an ethylene-based polymer, based on the weight of the composition, not including the copolymer of component B.