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1. (CN101223031) Polyolefin multilayer microporous membrane and battery separator

Office : China
Application Number: 200680025849.8 Application Date: 14.07.2006
Publication Number: 101223031 Publication Date: 16.07.2008
Grant Number: 101223031 Grant Date: 08.01.2014
Publication Kind : B
Prior PCT appl.: Application Number:PCTJP2006314106 ; Publication Number:2007010878 Click to see the data
IPC:
B32B 27/32
H01M 2/16
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
32
comprising polyolefins
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
CPC:
H01M 10/4235
B01D 67/0027
B01D 69/02
B01D 69/12
B01D 71/26
B01D2325/22
B01D2325/24
B29B 7/002
B29C 47/0057
B29C 47/0064
B29C 55/023
B29C 55/16
B29K2023/065
B29K2023/0683
B29K2105/0088
B29K2105/04
B29K2995/0068
B29L2031/3468
B29L2031/755
B32B 27/32
H01M 2/1653
H01M 2/1686
H01M 10/0525
Y02E 60/122
Applicants: 东丽电池隔膜株式会社
Inventors: 菊地慎太郎
泷田耕太郎
河野公一
Agents: 中科专利商标代理有限责任公司 11021
Priority Data: 207752/2005 15.07.2005 JP
Title: (EN) Polyolefin multilayer microporous membrane and battery separator
(ZH) 聚烯烃多层微多孔膜及电池用隔离件
Abstract: front page image
(EN) Disclosed is a polyolefin multilayer microporous membrane composed of at least three layers. This polyolefin multilayer microporous membrane comprises first porous layers respectively composed of a polyethylene resin and constituting at least both surface layers, and a second porous layer containing a polyethylene resin and polypropylene and constituting at least one layer interposed between the two surface layers. This polyolefin multilayer microporous membrane is characterized in that the heat of fusion ( Hm) of polypropylene as measured by a differential scanning calorimeter is not less than 90 J/g, and the polypropylene content is not more than 50% by mass when the total of the polyethylene resin and polypropylene in the second porous layer is taken as 100% by mass.
(ZH)

本发明提供一种至少由三层构成的聚烯烃多层微多孔膜,其中,具有由聚乙烯系树脂构成且形成至少两面的表层的第一多孔层、和含有聚乙烯系树脂及聚丙烯且至少一层介于两表层之间的第二多孔层,利用差示扫描量热仪测定的聚丙烯的熔融热(ΔHm)为90J/g以上,在将第二多孔层中的聚乙烯系树脂及聚丙烯的总合设为100质量%时,聚丙烯的含量为50质量%以下。


Also published as:
KR1020080028444EP1905586JPWO2007010878RU02406612US20090274955CA2615495
ES2438738JP5202949US20160329609IN851/DELNP/2008WO/2007/010878