| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22C1-162
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B22C1-2273
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7664 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-76
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22C1-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22C1-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B22C9-02 |
| filingDate |
1975-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1978-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6fa9f47db157a19344f42de69a5731b3 |
| publicationDate |
1978-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4072649-A |
| titleOfInvention |
Process for the production of foundry cores and molds |
| abstract |
Foundry cores and molds are produced from foundry sand and/or other inert fillers, polyhydroxyl compounds, polyisocyanates and tertiary amine catalysts. The precatalyzed mixtures can be stored for long periods of time without any adverse effects on the subsequent processing or core properties when at least 80% by weight of the polyisocyanate used is of the diphenyl alkane series in which the isocyanate groups are sterically hindered solely by substituents in at least one ortho position. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4266408-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4220553-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4311631-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4390678-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5043365-A |
| priorityDate |
1974-08-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |