	US 12,391,774 B2
	Heterophasic polypropylene copolymers
Jingbo Wang, Linz (AT); Markus Gahleitner, Linz (AT); Klaus Bernreitner, Linz (AT); Luigi Maria Cristoforo Resconi, Linz (AT); and Simon Schwarzenberger, Linz (AT)
Assigned to BOREALIS AG, Vienna (AT)
Appl. No. 17/763,278
Filed by BOREALIS AG, Vienna (AT)
PCT Filed Sep. 25, 2020, PCT No. PCT/EP2020/076901 § 371(c)(1), (2) Date Mar. 24, 2022, PCT Pub. No. WO2021/058742, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 19199696 (EP), filed on Sep. 25, 2019; and application No. 19211662 (EP), filed on Nov. 26, 2019.
Prior Publication US 2023/0002605 A1, Jan. 5, 2023
Int. Cl. C08F 10/06 (2006.01); C07F 17/00 (2006.01); C08F 4/02 (2006.01); C08F 4/649 (2006.01); C08F 4/6592 (2006.01); C08F 210/06 (2006.01); C08L 23/14 (2006.01)

CPC C08F 4/6498 (2013.01) [C07F 17/00 (2013.01); C08F 4/02 (2013.01); C08F 4/65927 (2013.01); C08F 10/06 (2013.01); C08F 210/06 (2013.01); C08L 23/142 (2013.01); C08F 2420/07 (2021.01); C08F 2420/10 (2021.01); C08F 2800/20 (2013.01); C08L 2205/025 (2013.01)]

22 Claims

1. A heterophasic polypropylene copolymer having an MFR₂of 0.05 to 20 g/10 min (ISO 1133 at 230° C. with a loading of 2.16 kg) and a melting point (Tm) of 156 to 164° C. (measured by DSC according to ISO 11357) wherein the heterophasic polypropylene copolymer comprises at least the following components:

(A) 55.0 to 95.0 wt % of a crystalline fraction (CF) having a comonomer content of 0 to 3.0 wt %; and

(B) 5.0 to 45.0 wt % of a soluble fraction (SF) having a comonomer content of 12 to 45 wt %;

wherein the intrinsic viscosity (IV) (in decalin at 135° C.) of the soluble fraction (SF) is 2.5 to 11 dl/g, and

wherein the amount of crystalline fraction (CF) and the amount of soluble fraction (SF) are determined in 1,2,4-trichlorobenzene at 40° C.