US 12,258,429 B2
C2C3 random copolymer composition
Jingbo Wang, Linz (AT); Markus Gahleitner, Linz (AT); Klaus Bernreitner, Linz (AT); Pauli Leskinen, Porvoo (FI); Peter Niedersuss, Linz (AT); and Stefan Ortner, Linz (AT)
Assigned to BOREALIS AG, Vienna (AT)
Appl. No. 17/610,502
Filed by BOREALIS AG, Vienna (AT)
PCT Filed May 20, 2020, PCT No. PCT/EP2020/064028
§ 371(c)(1), (2) Date Nov. 11, 2021,
PCT Pub. No. WO2020/239561, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 19177301 (EP), filed on May 29, 2019.
Prior Publication US 2022/0251259 A1, Aug. 11, 2022
Int. Cl. C08F 210/16 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); C08F 2/00 (2006.01); C08F 4/659 (2006.01); C08F 4/6592 (2006.01); C08F 210/02 (2006.01); C08F 210/06 (2006.01); C08F 210/08 (2006.01); C08L 23/16 (2006.01)
CPC C08F 210/06 (2013.01) [B32B 27/08 (2013.01); B32B 27/32 (2013.01); C08F 2/001 (2013.01); C08F 4/65912 (2013.01); C08F 4/65916 (2013.01); C08F 4/65927 (2013.01); C08F 210/02 (2013.01); C08F 210/08 (2013.01); C08L 23/16 (2013.01); B32B 2250/242 (2013.01); B32B 2307/31 (2013.01); B32B 2307/412 (2013.01); B32B 2307/54 (2013.01); B32B 2307/558 (2013.01); B32B 2439/46 (2013.01); B32B 2439/70 (2013.01); B32B 2439/80 (2013.01); C08L 2201/10 (2013.01); C08L 2203/02 (2013.01); C08L 2203/162 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2308/00 (2013.01); C08L 2314/06 (2013.01)] 13 Claims
 
1. A C2C3 random copolymer composition comprising:
A) 70.0 to 95.0 wt % of a C2C3 random copolymer having:
a) an ethylene content in a range of from 2.5 to 5.5 wt %;
b) a melt flow rate MFR2 (230° C./2.16 kg) measured according to ISO 1133 in a range of from 4.0 to 12.0 g/10 min;
c) a melting temperature Tm as determined by DSC according to ISO 11357 of from 115° C. to 135° C. and
d) a xylene cold soluble (XCS) fraction of greater than or equal to from 0.1 wt % and less than 15.0 wt %, and
B) 5.0 to 30.0 wt % of a propylene-1-butene plastomer, which has a 1-butene content in a range of greater than or equal to from 15.0 wt % and less than 50.0 wt % based on the plastomer, having
e) a MFR2 (230° C./2.16 kg) measured according to ISO 1133 in a range of 2.0 to 20.0 g/10 min,
f) a melting temperature Tm as determined by DSC according to ISO 11357 of from 60° C. to 110° C. and
g) a tensile modulus measured according to ASTM D638 in a range of from 50 to 450 MPa.