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Pub. No.:    WO/2010/147800    International Application No.:    PCT/US2010/037762
Publication Date: 23.12.2010 International Filing Date: 08.06.2010
B32B 27/08 (2006.01), B32B 5/18 (2006.01), C08J 5/18 (2006.01)
Applicants: TORAY TONEN SPECIALTY SEPARATOR GODO KAISHA [JP/JP]; 8-15 Kohnan, 1-chome Minato-ku, Tokyo, 108-8005 (JP) (For All Designated States Except US).
ISHIHARA, Takeshi [JP/JP]; (JP) (For US Only).
MIYAOKA, Satoshi [JP/JP]; (JP) (For US Only)
Inventors: ISHIHARA, Takeshi; (JP).
MIYAOKA, Satoshi; (JP)
Agent: HUGHES, Gerard J.; Exxonmobil Chemical Company Law Technology P.O. Box 2149 Baytown, TX 77522-2149 (US)
Priority Data:
61/298,756 27.01.2010 US
61/346,675 20.05.2010 US
61/298,752 27.01.2010 US
61/351,380 04.06.2010 US
61/218,720 19.06.2009 US
Abstract: front page image
(EN)The invention relates to microporous membranes having at least two layers, a first layer comprising polymethylpentene and a second layer which comprises a polymer and has a composition that is not substantially the same as that of the first layer. The invention also relates to methods for making such membranes and the use of such membranes as battery separator film in, e.g., lithium ion batteries.
(FR)La présente invention concerne, dans des modes de réalisation, des membranes microporeuses comprenant au moins deux couches. La première couche comprend du polyméthylpentène. La seconde couche comprend un polymère et sa composition n'est pas sensiblement identique à celle de la première couche. L'invention concerne également des procédés de fabrication de ces membranes et leur utilisation comme film séparateur de batterie, notamment dans des batteries au lithium-ion.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, 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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)