公开(公告)号：US20220145052A1

公开(公告)日：2022-05-12

申请号：US17440162

申请日：2020-03-17

申请人： MITSUI CHEMICALS, INC. ,  PRIME POLYMER CO., LTD.

发明人： Keita ITAKURA ,  Katsuhiko KOIKE ,  Ryoko HIROI ,  Hiroyuki FUKUSHIMA ,  Kou TSURUGI ,  Atsushi SHIBAHARA ,  Fumiaki NISHINO ,  Kohei TANAKA ,  Yasuhiro KAI ,  Naoya NODA ,  Kenji MICHIUE ,  Takanori FURUTA

IPC分类号： C08L23/10 ,  C08F110/06 ,  C08F210/16

摘要： A propylene resin composition includes a propylene polymer (A) satisfying requirements (1) to (3) below: (1) having a number average molecular weight (Mn) measured by gel permeation chromatography (GPC) of 5000 to 22000; (2) having a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) measured by gel permeation chromatography (GPC) being 1.2 to 3.5; and (3) having a proportion of a component eluted at a temperature of not more than −20° C. in temperature rising elution fractionation (TREF) being not more than 3.5 mass %.

公开(公告)号：US20220380585A1

公开(公告)日：2022-12-01

申请号：US17632467

申请日：2020-08-07

申请人： PRIME POLYMER CO., LTD. ,  MITSUI CHEMICALS, INC.

发明人： Ryoko HIROI ,  Keita ITAKURA ,  Shino NAITO ,  Takanori FURUTA ,  Kou TSURUGI

IPC分类号： C08L23/12 ,  B29C45/00 ,  C08L23/14 ,  C08L23/08 ,  B29K23/00

摘要： A propylene polymer composition includes a propylene homopolymer (A) having an intrinsic viscosity [η] measured in a tetralin solvent at 135° C. in the range of 7 to 12 dl/g, a propylene polymer (B) having an intrinsic viscosity [η] in the range of not less than 0.21 dl/g and less than 0.54 dl/g, and having a proportion of a component eluted at a temperature of not more than −20° C. in TREF in the range of not more than 3.5 mass %, and a propylene polymer (C) having an intrinsic viscosity [η] in the range of not less than 0.54 dl/g and less than 2.6 dl/g, wherein the content of (A) is 0.5 to 47.5 mass %, the content of (B) is 5 to 95 mass % and the content of (C) is 2.5 to 85.5 mass %, based on the total of (A), (B) and (C).