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1. (WO2019065660) POROUS FILM, SEPARATOR FOR SECONDARY BATTERIES, AND SECONDARY BATTERY
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Pub. No.: WO/2019/065660 International Application No.: PCT/JP2018/035531
Publication Date: 04.04.2019 International Filing Date: 25.09.2018
IPC:
H01M 2/16 (2006.01) ,B32B 5/32 (2006.01) ,B32B 27/00 (2006.01)
H ELECTRICITY
01
BASIC ELECTRIC ELEMENTS
M
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2
Constructional details, or processes of manufacture, of the non-active parts
14
Separators; Membranes; Diaphragms; Spacing elements
16
characterised by the material
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5
Layered products characterised by the non-homogeneity or physical structure of a layer
22
characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous
32
both layers being foamed or specifically porous
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27
Layered products essentially comprising synthetic resin
Applicants:
東レ株式会社 TORAY INDUSTRIES, INC. [JP/JP]; 東京都中央区日本橋室町2丁目1番1号 1-1, Nihonbashi-Muromachi 2-chome, Chuo-ku, Tokyo 1038666, JP
Inventors:
甲斐 信康 KAI Nobuyasu; JP
生駒 啓 IKOMA Kei; JP
佃 明光 TSUKUDA Akimitsu; JP
Agent:
特許業務法人栄光特許事務所 EIKOH PATENT FIRM, P.C.; 東京都港区西新橋一丁目7番13号 虎ノ門イーストビルディング10階 Toranomon East Bldg. 10F, 7-13, Nishi-Shimbashi 1-chome, Minato-ku, Tokyo 1050003, JP
Priority Data:
2017-18449726.09.2017JP
Title (EN) POROUS FILM, SEPARATOR FOR SECONDARY BATTERIES, AND SECONDARY BATTERY
(FR) FILM POREUX, SÉPARATEUR POUR BATTERIES SECONDAIRES ET BATTERIE SECONDAIRE
(JA) 多孔性フィルム、二次電池用セパレータおよび二次電池
Abstract:
(EN) The purpose of the present invention is to provide a porous film which has high resistance to thermal film rupture, high adhesion to an electrode, and excellent battery characteristics. A porous film which comprises a porous layer on at least one surface of a porous substrate, and which is configured such that: the porous layer contains the resin A and the resin B described below; and if α is the surface aperture ratio of the porous layer and β is the cross-sectional void fraction of the porous layer, α/β is less than 1.0. Resin A: a resin that has a melting point of 150°C or higher, or a resin that does not substantially have a melting point Resin B: a resin that has a melting point of lower than 150°C, or an amorphous resin
(FR) Le but de la présente invention est de fournir un film poreux qui présente une résistance élevée à la rupture de film thermique, une adhérence élevée à une électrode, et d'excellentes caractéristiques de batterie. Un film poreux qui comprend une couche poreuse sur au moins une surface d'un substrat poreux, et qui est configuré de telle sorte que : la couche poreuse contient la résine A et la résine B décrites ci-dessous ; et si α est le rapport d'ouverture de surface de la couche poreuse et β est la fraction de vide en section transversale de la couche poreuse, α/β est inférieur à 1,0. La résine A : une résine qui a un point de fusion d'au moins 150 °C, ou une résine qui ne possède pas sensiblement une résine de point de fusion B : une résine qui a un point de fusion inférieur à 150 °C, ou une résine amorphe.
(JA) 本発明の目的は、耐熱破膜性が高く、電極との接着性が高く、かつ優れた電池特性を有する多孔性フィルムを提供することにある。多孔質基材の少なくとも片面に多孔質層を有し、該多孔質層が以下の樹脂Aおよび樹脂Bを含み、該多孔質層の表面開孔率をα、断面空隙率をβとしたとき、α/βが1.0未満である、多孔性フィルム。 樹脂A:150℃以上に融点を有する樹脂、または実質的に融点を有さない樹脂 樹脂B:150℃未満に融点を有する樹脂、または非晶性樹脂
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)