http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011016973-A

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classificationCPCAdditional http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E60-10
classificationIPCInventive http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M2-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B05D1-28
filingDate 2009-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f34d793a9d856c22bb5a2886c16414f
publicationDate 2011-01-27-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber JP-2011016973-A
titleOfInvention Heat-resistant composite polyolefin microporous membrane and production method thereof.
abstract [PROBLEMS] To provide a separator for a lithium ion secondary battery using a relatively large-diameter polyolefin microporous membrane that is easy to handle, has both shutdown characteristics and heat resistance, and has favorable air permeability that is advantageous for rapid charge and discharge. The object is to provide a composite polyolefin microporous membrane and a method for producing the same. SOLUTION: For the purpose of imparting heat resistance and taking advantage of polyolefin microporous membrane with good air permeability that contributes to rapid charge / discharge characteristics and good capacity retention as a separator for lithium ion secondary batteries. A heat-resistant polymer with a uniform thickness on both sides of the membrane by the simultaneous application method on both sides after embedding holes communicating with the front and back of a good polyolefin microporous membrane with a relatively large diameter in advance with a solvent extractable substance After forming the coating film, the resin embedding the holes communicating with the front and back is extracted with a solvent. Moreover, it provides as a separator for lithium ion secondary batteries. [Selection] Figure 1
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priorityDate 2009-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date>
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