| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8f4fd90f4183ddf9de155d8b37ab9ad0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_df5ca9f22c445d303811b36a40eb348e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L79-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J3-14 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L79-08 |
| filingDate |
1999-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2001-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb8bf2b874e99097d84eea95e855d996
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7f1b99f7cc7a7cac4104ef230b834ae9 |
| publicationDate |
2001-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6187899-B1 |
| titleOfInvention |
Polyamic acid and polyimide microfine particles and process for their production |
| abstract |
A process for producing polyimide microfine particles which is amenable to free control of particle morphology and particle diameter distribution is provided. A polyamic acid and a polyimide, each in the form of microfine particles with good monodispersibility, are also provided. There is also provided a process for producing polyimide microfine particles from a tetracarboxylic anhydride and a diamine compound which comprises (a) a first step of preparing a first solution containing the tetracarboxylic anhydride and a second solution containing the diamine compound, (b) a second step of mixing the first and second solutions and causing a polyamic acid to precipitate in the form of microfine particles from the mixed solution under ultrasonic agitation, and (c) a third step of imidating the polyamic acid particles to provide the objective polyimide in the form of microfine particles. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9228118-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2002188088-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013289156-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006068671-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006039984-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2544997-C1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2012231979-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005197471-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008269457-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7211537-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2569687-C1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6780960-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10465080-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10301506-B2 |
| priorityDate |
1998-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |