公开(公告)号：US20240352164A1

公开(公告)日：2024-10-24

申请号：US18683603

申请日：2022-08-08

申请人： JAPAN POLYPROPYLENE CORPORATION

发明人： Masaaki ITO ,  Jun SHINOZAKI ,  Miori TAKIZAWA ,  Masato NAKANO

IPC分类号： C08F210/06 ,  C08F4/6592

CPC分类号： C08F210/06 ,  C08F4/65927 ,  C08F2420/09

摘要： To provide a branched propylene-based polymer that is excellent in ductility when melting, while retaining melt tension necessary for molding. A branched propylene-based polymer having the following properties (1), (2) and (3): property (1): a multi-branching index (MBI) is 0.45 or more and 1.00 or less; property (2): a strain hardening index at a strain rate (dε/dt) of 1.0/see (SHI@1s−1) is 0.70 or more and 3.00 or less; and property (3): a maximum drawing rate (MaxDraw) at 230° C. and a melt flow rate (MFR) satisfy a relation represented by the following formula (1-1):











(
MaxDraw
)

>


112
×

log
⁡
(
MFR
)


+
30





Formula
⁢


(

1
⁢
‐
⁢
1

)

公开(公告)号：US20240182609A1

公开(公告)日：2024-06-06

申请号：US18283127

申请日：2022-03-11

申请人： JAPAN POLYPROPYLENE CORPORATION

发明人： Masaaki ITO ,  Jun SHINOZAKI ,  Tomoki UCHIDA ,  Miori TAKIZAWA

IPC分类号： C08F110/06 ,  C08F2/00 ,  C08F4/649 ,  C08F4/659 ,  C08F4/6592

CPC分类号： C08F110/06 ,  C08F2/001 ,  C08F4/6492 ,  C08F4/65904 ,  C08F4/65927

摘要： A branched propylene-based polymer having the following properties (1) to (5):



property (1): MFR of 10 g/10 min to 100 g/10 min;
property (2): Mw/Mn is 2.5 or more and less than 3.5; Mz/Mw is 3.0 to 4.7; and Mz is 50.0×104 to 94.0×104;
property (3): in an integral molecular weight distribution curve obtained by GPC, a percentage of a component having a molecular weight of 100×104 or more, is 1.5 mass to 4.0 mass %;
property (4): in a molecular weight distribution curve obtained by 3D-GPC, a branching index g′(100×104) at an absolute molecular weight Mabs of 100×104 is more than 0.70 and 0.85 or less; and
property (5): a ratio [η*(0.01)η*(100)] between a complex viscosity η*(0.01) and a complex viscosity η*(100) in dynamic viscoelasticity measurement, is 4.0 to 20, and η*(0.01)/η*(100) and the MFR satisfy specific relations.

公开(公告)号：US20230174758A1

公开(公告)日：2023-06-08

申请号：US17927453

申请日：2021-05-28

申请人： JAPAN POLYPROPYLENE CORPORATION

发明人： Tomoki UCHIDA ,  Takahisa NISHIBU ,  Masaaki ITO ,  Miori TAKIZAWA

IPC分类号： C08L23/10 ,  C08J3/00 ,  C08F10/06

CPC分类号： C08L23/10 ,  C08F10/06 ,  C08J3/005 ,  C08J2323/10 ,  C08J2423/10 ,  C08L2205/025

摘要： Provided is A polypropylene-based resin composition comprising 2 mass % to 30 mass % of a polypropylene resin (X1) having specific properties, 5 mass % to 98 mass % of a polypropylene resin (X2) having specific properties, and 0 mass % to 80 mass % of a polypropylene-based resin (Y) having specific properties, wherein the total amount of the polypropylene resin (X1), the polypropylene resin (X2) and the polypropylene-based resin (Y) is 100 mass %.