http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2060599-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5188646b37ee050b3f975ec5aec9776c |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L91-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-249979 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L23-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C48-30 |
| filingDate | 2008-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2239ae6b2f48f74ab3837ed645f02706 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8bfee6ab7bb51f04375b81fef7328171 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_82813d423026eb97626ffdaec507848a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_664cd3278f82c7d9313aa4a761052c80 |
| publicationDate | 2009-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2060599-A1 |
| titleOfInvention | Microporous polyethylene film with improved strength, permeability and surface energy |
| abstract | The present invention relates a microporous polyethylene film with improved mechanical strength, porosity, pore size and, particularly, improved surface energy, thereby having improved electrolyte wettability and being adequate for use as separators in high-capacity and long lifetime lithium secondary batteries. The microporous polyethylene film of the present invention is characterized by having a surface energy of at least 50 dynes/cm 2 , an air permeability (Darcy's permeability constant) of at least 2.0x10 -5 , a puncture strength of at least 0.17 N/m, a product of the air permeability and the puncture strength of at least 0.34x10 -5 Darcy N/m, a weighted average pore size of at least 30 nm, and a film shrinkage in the transverse and machine directions of not more than 5% at 105 °C for 10 minutes and not more than 15% at 120 °C for 60 minutes, respectively. The microporous polyethylene film is prepared by compounding raw materials in an extruder such that a thermodynamic single phase is formed above the temperature of liquid-liquid phase separation, inducing sufficient phase separation in a phase separation zone formed inside the extruder by controlling the temperature below the temperature of liquid-liquid phase separation, forming through a die, and carrying out plasma treatment in order to enhance surface energy. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2612702-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114784462-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105390643-A |
| priorityDate | 2007-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 108.