US 10,889,667 B2
High-stiffness and energy-reducing polypropylene for foaming
Jin Hyun Park, Daejeon (KR); Ji Ho Choi, Daejeon (KR); Kyung Seop Noh, Daejeon (KR); Sang Jin Jeon, Daejeon (KR); Sang Eun An, Daejeon (KR); Ra Yun Choi, Daejeon (KR); and In Sun Lee, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 15/749,249
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Feb. 13, 2017, PCT No. PCT/KR2017/001551
§ 371(c)(1), (2) Date Jan. 31, 2018,
PCT Pub. No. WO2017/142273, PCT Pub. Date Aug. 24, 2017.
Claims priority of application No. 10-2016-0018661 (KR), filed on Feb. 17, 2016.
Prior Publication US 2018/0223013 A1, Aug. 9, 2018
Int. Cl. C08F 10/06 (2006.01); C08F 110/06 (2006.01); C08F 4/659 (2006.01); C08F 4/6592 (2006.01); C08F 10/02 (2006.01)
CPC C08F 10/06 (2013.01) [C08F 4/65912 (2013.01); C08F 4/65927 (2013.01); C08F 10/02 (2013.01); C08F 110/06 (2013.01); C08F 2500/01 (2013.01); C08F 2500/03 (2013.01)] 5 Claims
 
1. A polyethylene polypropylene having:
a melt index (MI), measured at 230° C. under a load of 2.16 kg according to ASTM D1238, of 4 to 60 g/10 min,
a melting point (Tm) of 130° C. to 140° C.,
a flexural modulus, measured according to ASTM 790, of 9,000 to 18,000 kgf/cm2, and
a crystallization temperature of 80° C. to 105° C.