Multi-stage propylene polymer, process for producing the same, and propylene resin composition
AssigneePrime Polymer Co., Ltd.
InventorsRyoichi Tsunori, Yasuhiko Otsuki, Tsutomu Onodera, Shohei Ikeda, Masayuki Shinohara
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Abstract
A multistage propylene-based polymer including the following components (A) and (B): (A) 5 to 20 wt % of a propylene homopolymer component or a copolymer component of propylene and an α-olefin with 2 to 8 carbon atoms having an intrinsic viscosity [η] of more than 10 dL/g in tetralin at 135° C.; and (B) 80 to 95 wt % of a propylene homopolymer component or a copolymer component of propylene and an α-olefin with 2 to 8 carbon atoms having an intrinsic viscosity [η] of 0.5 to 3.0 dL/g in tetralin at 135° C.
Claims20
A multistage propylene-based polymer comprising the following components (A) and (B):
- (A) 5 to 20 wt % of a propylene homopolymer component or a copolymer component of propylene and an α-olefin with 2 to 8 carbon atoms having an intrinsic viscosity [η] of 12 to 20 dL/g in tetralin at 135° C.;
- and
- (B) 80 to 95 wt % of a propylene homopolymer component or a copolymer component of propylene and an α-olefin with 2 to 8 carbon atoms having an intrinsic viscosity [η] of 0.5 to 3.0 dL/g in tetralin at 135° C.
Dependencies are inferred from the claim text.