Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ad8be5613da19d081abd4348946c0408 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C71-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C41-12 |
filingDate |
1999-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e21bd3451f7e76901a0250f84ece7f1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb30e0e263809e9f06dd0d9093ea768f |
publicationDate |
2000-03-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
JP-2000072893-A |
titleOfInvention |
Method for producing low shrinkage polyimide film |
abstract |
(57) [Problem] To provide a method for producing a polyimide film having low shrinkage and high product production efficiency. SOLUTION: A polyamic acid solution obtained by polymerizing pyromellitic dianhydride and 4,4′-diaminodiphenyl ether in an organic solvent is cast or extruded into a film, The polyimide film obtained by drying and heat treatment is subjected to a heat treatment while keeping the tension in the longitudinal direction of the film at 1 kg / m or more and 10 kg / m or less, followed by a cooling treatment. A method for producing a low heat shrinkable polyimide film, wherein the shrinkage after heat treatment at 0 ° C. for 1 hour is 0.05% or less. |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006044254-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4626039-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2004346210-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2015224336-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2002098969-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4595291-B2 |
priorityDate |
1999-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |