公开(公告)号：US10686175B2

公开(公告)日：2020-06-16

申请号：US15539084

申请日：2015-12-25

Applicant: TORAY INDUSTRIES, INC.

Inventor： Toshihiko Kaneda ,  Go Sato ,  Koichi Kono

IPC: H01M4/02 ,  H01M2/16 ,  C08J9/28 ,  H01M2/14 ,  C08F10/02 ,  H01M10/00

Abstract: A polyolefin microporous membrane is disclosed. The membrane includes a polyolefin resin having an MFR value of not greater than 2.0 g/10 min, and a crystal nucleating agent. The polyolefin microporous membrane has an air permeation resistance scaled to a thickness of 20 μm of from 100 to 500 sec/100 cc, a porosity of from 20% to 60%, and a mean flow pore size of not greater than 100 nm.

公开(公告)号：US10079378B2

公开(公告)日：2018-09-18

申请号：US15312558

申请日：2015-05-28

Applicant: TORAY INDUSTRIES, INC.

Inventor： Tomiko Matsumoto ,  Masami Sugata ,  Koichi Kono

IPC: H01M2/16 ,  H01M2/14 ,  B01D67/00 ,  B01D69/02 ,  B01D71/26 ,  B29C47/00 ,  B29C47/16 ,  B29C47/60 ,  B29C47/88 ,  B29C55/00 ,  B29C55/14 ,  C08J5/18 ,  C08J9/28 ,  C08L23/06 ,  B29C47/40 ,  B29L31/34 ,  B29K23/00 ,  B29K105/04

CPC classification number: H01M2/1653 ,  B01D67/002 ,  B01D67/0027 ,  B01D69/02 ,  B01D71/26 ,  B01D2325/20 ,  B01D2325/22 ,  B01D2325/24 ,  B01D2325/34 ,  B29C48/0018 ,  B29C48/08 ,  B29C48/30 ,  B29C48/31 ,  B29C48/40 ,  B29C48/625 ,  B29C48/914 ,  B29C55/005 ,  B29C55/143 ,  B29K2023/0683 ,  B29K2105/041 ,  B29K2995/0065 ,  B29L2031/3468 ,  C08J5/18 ,  C08J9/28 ,  C08J2201/0482 ,  C08J2205/044 ,  C08J2323/06 ,  C08J2423/06 ,  C08L23/06 ,  C08L2207/068 ,  H01M2/145

Abstract: A polyolefin microporous membrane is disclosed. The membrane includes at least one microporous membrane layer, where the microporous membrane layer has an air permeability between about 100 sec/100 cc and about 220 sec/100 cc, a pin puncture strength of at least 550 gf, and a crystallization half time t1/2 of from 10 to 35 minutes when subjected to isothermal crystallization at 117° C. The air permeability and the pin puncture strength are normalized to a thickness of 16 μm.

公开(公告)号：US10507436B2

公开(公告)日：2019-12-17

申请号：US15539972

申请日：2015-12-25

Applicant: TORAY INDUSTRIES, INC.

Inventor： Go Sato ,  Toshihiko Kaneda ,  Koichi Kono

IPC: B01D71/26 ,  C08J9/28 ,  H01M2/16 ,  C08F10/06 ,  H01M10/0525 ,  H01M2/14

Abstract: A polyolefin microporous membrane is disclosed. The polyolefin microporous membrane includes a polyolefin resin, where the polyolefin resin contains at least 80 mass % polypropylene resin, and where the polyolefin microporous membrane has a maximum pore size of less than 30.0 nm and a mean flow pore size of less than 20.0 nm.