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公开(公告)号：US20210017367A1
公开(公告)日：2021-01-21
申请号：US16981217
申请日：2019-03-15
Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
Inventor： TAKESHI TSUKAHARA , NOBUYUKI TSURUMI , SHITOSHI KANNO , KUNIO YAMAMOTO , TAKESHI NAKAJIMA
Abstract: A polypropylene composition made from or containing: (i) component (1) made from or containing a propylene/ethylene copolymer containing more than 1.5% by weight and not more than 4% by weight of an ethylene-derived unit; (ii) component (2) made from or containing an ethylene/propylene copolymer containing 65 to 87% by weight of an ethylene-derived unit; and (iii) 0.01 to 0.5 parts by weight of a crystal nucleating agent, based on a total of 100 parts by weight of component (1) and component (2); wherein the polypropylene composition has 1) weight ratio of component (1) to component (2) is in the range of 80:20 to 90:10, 2) intrinsic viscosity of xylene solubles (XSIV) in the range of 0.8 to 1.4 dl/g, 3) MFR (at 230° C. under a load of 2.16 kg) in the range of 5 to 15 g/10 min., 4) viscosity ratio in the range of 0.40 to 0.80 where Viscosity ratio = XSIV Intrinsic viscosity of component ( 1 ) .
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公开(公告)号：US20170198125A1
公开(公告)日：2017-07-13
申请号：US15321321
申请日：2015-06-08
Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
Inventor： TAKESHI TSUKAHARA , NOBUYUKI TSURUMI , SHITOSHI KANNO , KUNIO YAMAMOTO , TAKESHI NAKAJIMA
IPC: C08L23/12
Abstract: The present disclosure generally relates to a heterophasic polypropylene composition comprising 68-76% by weight of a propylene homopolymer or copolymer matrix, 24-32% by weight of an ethylene-propylene copolymer, and a nucleating agent. In some embodiments, the composition has an intrinsic viscosity of the xylene soluble (XSIV) fraction at room temperature of up to 1.3 dl/g and a melt flow rate (230° C., 2.16 kg) of 30 to 70 g/10 min. The compositions disclosed herein can be used in molded articles, using techniques such as thin wall injection molding, that are endowed with excellent impact behavior.
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