Invention Grant
- Patent Title: Propylene-based polymer composition and uses thereof
- Patent Title (中): 丙烯系聚合物组合物及其用途
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Application No.: US13536590Application Date: 2012-06-28
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Publication No.: US08735499B2Publication Date: 2014-05-27
- Inventor: Naomi Urakawa , Makoto Nakano , Yasuhiro Kitahara , Ryosuke Aburaki , Akihiro Matsuda
- Applicant: Naomi Urakawa , Makoto Nakano , Yasuhiro Kitahara , Ryosuke Aburaki , Akihiro Matsuda
- Applicant Address: JP Tokyo
- Assignee: Mitsui Chemicals, Inc.
- Current Assignee: Mitsui Chemicals, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Foley & Lardner LLP
- Priority: JP2011-144364 20110629
- Main IPC: C08F8/00
- IPC: C08F8/00 ; C08L9/00 ; C08L23/10 ; C08L25/02

Abstract:
The propylene-based polymer composition includes a specific amount of a propylene-based polymer (A) having a syndiotactic pentad fraction (rrrr fraction) of 85% or more and containing 90 to 100 mol % of a structural unit derived from propylene; a specific amount of a propylene-based copolymer (B) containing 40 to 89 mol % of a structural unit derived from propylene and 11 to 60 mol % of a structural unit derived from an α-olefin and satisfying a specific equation of intrinsic viscosity [η] and MFR; and specific amount(s) of at least one polymer of an olefin-based thermoplastic elastomer (C), a styrene-based elastomer (D), a propylene/ethylene/α-olefin copolymer (E) and an isotactic propylene-based polymer (F), and optionally an ethylene/vinyl acetate copolymer (G) and/or an ethylene-based polymer (H).
Public/Granted literature
- US20130137826A1 PROPYLENE-BASED POLYMER COMPOSITION AND USES THEREOF Public/Granted day:2013-05-30
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