| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cebc9740ef706cde29e885504f274ffa |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F6-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F9-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D39-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01F6-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D01D1-10 |
| filingDate |
2012-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_312db68a63f84c3314772605f645db5c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_50d2d5342d70eb518fb2bacffaba1812
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f865f5b2c86060211066c3b35aa06be9
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f07770852ff81efb1765516d2d95dc88 |
| publicationDate |
2012-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2012197548-A |
| titleOfInvention |
Filter material for purifying acrylonitrile-based polymer solution, method for producing acrylonitrile-based polymer solution using the filter material, etc. |
| abstract |
[PROBLEMS] To suppress an increase in pressure applied to a filter while efficiently removing only foreign matters and gel-like substances that adversely affect the production process and fiber performance of a carbon fiber precursor acrylonitrile fiber contained in a spinning dope. A filter material for obtaining high-strength carbon fiber is provided. SOLUTION: A filter material obtained by laminating and sintering nonwoven fabric type filter materials having different openings so as to have a two-layer or three-layer structure in the order of the smallest openings. The filling rate Xk (%) of the kth layer, the thickness Yk (mm), and the cross-sectional area Zk (μm 2 ) of the fibers constituting the filter material satisfy the following expressions (1) to (3). However, k is the order of fine openings of the filter material for purifying the acrylonitrile-based polymer solution, and n is the number of layers of the filter material. [Selection figure] None |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2015071844-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-WO2018003836-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109312497-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2018003836-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11286583-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112770827-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-6338023-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2019026827-A |
| priorityDate |
2011-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |