http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2021174656-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_675e5360925c59c58d349b9f7bc7abb4 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P70-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E60-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M10-052 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M10-058 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B38-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M4-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B5-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B27-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B32B27-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01M50-409 |
| filingDate | 2020-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a7a1421aacdfb569220f892b6f67427 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dda0953be6ae8af37dde83cb970f9115 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4335c441cf630d9737749d3398ad4485 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_82a4a69bb52add7f3803456455ea38aa |
| publicationDate | 2021-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2021174656-A |
| titleOfInvention | Polyolefin-based microporous membrane and its manufacturing method |
| abstract | 【Task】 Providing a polyolefin-based microporous membrane with extremely low porosity, low shrinkage at high temperatures, excellent mechanical properties, excellent air permeability, and a thin film thickness, which is useful as a separator that enhances the safety of lithium-ion secondary batteries. do. SOLUTION: 30 to 65% by mass of a copolymer resin of 4-methyl-1-pentene and α-olefin having 3 or more carbon atoms, 25 to 50% by mass of ultrahigh molecular weight polyethylene, 1 to 15% by mass of polyethylene, and a diene system. A twin-screw extruder containing 10 to 45 parts by mass of a polyolefin resin mixture containing 0.1 to 2% by mass of a hydrogenated polymer and 0.5 to 5% by mass of a propylene-based elastomer resin, and 90 to 60 parts by mass of a plasticizer. To obtain a gel-like sheet molded product by supplying, melt-kneading, extruding from a die, and cooling to obtain a gel-like sheet molded product, biaxially stretching the gel-like sheet molded product to obtain a raw fabric A, one of the raw fabric A A part of the plasticizer is dissolved in a solvent to obtain the raw fabric B, and at least one of the raw fabric A and at least one of the raw fabric B are alternately stacked and bonded by applying heat and pressure. A method for producing a polyolefin-based microporous film, which comprises obtaining a single film and the weight ratio of the resin mixture to the plasticizer in the film is in the range of 50:50 to 70:30. [Selection diagram] None |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023109750-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023140330-A1 |
| priorityDate | 2020-04-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 61.