	US 11,807,744 B2
	Polypropylene composition and molded article
Takeshi Nakajima, Kanagawa (JP); Kunio Yamamoto, Kanagawa (JP); and Masashi Uchida, Kanagawa (JP)
Assigned to Basell Poliolefine Italia S.r.l., Milan (IT)
Appl. No. 17/285,838
Filed by BASELL POLIOLEFINE ITALIA S.R.L., Milan (IT)
PCT Filed Oct. 17, 2019, PCT No. PCT/JP2019/041813 § 371(c)(1), (2) Date Apr. 15, 2021, PCT Pub. No. WO2020/080555, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 2018-196745 (JP), filed on Oct. 18, 2018.
Prior Publication US 2021/0388192 A1, Dec. 16, 2021
Int. Cl. C08L 23/16 (2006.01); C08L 23/12 (2006.01)

CPC C08L 23/12 (2013.01) [C08L 23/16 (2013.01); C08L 2201/00 (2013.01); C08L 2205/025 (2013.01); C08L 2207/02 (2013.01)]

6 Claims

1. A polypropylene composition comprising:

(i) component (1) comprising a propylene homopolymer or copolymer containing 0 to 0.5% by weight of an ethylene-derived unit, based upon the total weight of the propylene homopolymer or copolymer; and

(ii) component (2) comprising an ethylene/propylene copolymer containing 65 to 85% by weight of an ethylene-derived unit, based upon the total weight of the ethylene/propylene copolymer;

wherein the polypropylene composition has:

1) a Mw/Mn value of xylene insolubles (XI) of the polypropylene composition as measured by GPC is in the range of 6 to 20,

2) a weight ratio of component (1) to component (2) is 75:25 to 79:21,

3) an intrinsic viscosity, measured in tetrahydronaphthalene at 135° C., of xylene solubles (XSIV) of the polypropylene composition is 1.0 to 3.0 dl/g, and

4) a MFR (at 230° C. under a load of 2.16 kg) of the polypropylene composition is 3 to 15 g/10 min.