http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H04236245-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_79cbb9f87b30f4e71aae70684a99180e |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2379-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1078 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1067 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1035 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G101-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-76 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-02 |
| filingDate | 1991-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f886b9c90e36d129c90eb64d5c7b1493 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_70acd97ef47c34a933dd121909bed050 |
| publicationDate | 1992-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H04236245-A |
| titleOfInvention | Production of flame resistant, highly heat resistant polyimide foam |
| abstract | PURPOSE: To obtain flame resistant, highly heat resistant polyimide foam suitable for insulating walls, etc., of ships and submarines by reacting specified carboxylic dianhydride with di- or polyisocyanate in the presence of a reaction accelerator. n CONSTITUTION: (A) Benzophenone-3,3',4,4'-tetracarboxylic acid dianhydride or pyromellitic acid dianhydride and (B) a di- or polyisocyanate consisting of methylenediphenyl 4,4'-diisocyanate, 2,4-,2,52,6-tolylene diisocyanate, and/or polymethylene-polyphenylene polyisocyanate of formula I (m is 0-4) are mixed homogeneously at room temperature in the presence of a reaction accelerator. Next, the mixture is reacted by being heated at 200-250°C for at least 5 min to obtain intended polyimide foam of formula II which, in a thermogravimetric analysis at a heating rate of 20 degrees per minute, has an overall weight loss up to 350°C of 3 wt.% or less and a maximum weight loss between 550°C and 650°C. n COPYRIGHT: (C)1992,JPO |
| priorityDate | 1990-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.