| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7ef01e33058cf740cf2197991be97af1 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2675
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26 |
| filingDate |
1999-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2000-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b49d67b9ce03b44eaab8d86b0b7a129e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dab0143350da0dc4c22224c47c3027e6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b8ad2d32bbeb7aad6befd4febf2cb8c5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e793a421cedb0d620075aa2e37a3f9cb |
| publicationDate |
2000-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6022945-A |
| titleOfInvention |
Process for production of propylene oxide/ethylene oxide block copolymers |
| abstract |
A catalyst for the polymerization of an alkylene oxide compound is disclosed. This catalyst is composed of a phosphazene compound or a phosphazenium salt which is derived from the phosphazene compound and an active hydrogen compound. A poly(alkylene oxide) can be efficiently produced by polymerizing the alkylene oxide compound in the presence of the catalyst and, when the catalyst is composed of the phosphazene compound, the active hydrogen compound. The poly(alkylene oxide) contains no metal component and compared with those produced using conventional amine-base catalysts, has also been improved significantly in odor. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003225244-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6936684-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6469218-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6664365-B2 |
| priorityDate |
1995-09-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |