| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_06abf49056b823936a6bc4299aa34a32 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G83-003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-22 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G83-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-22 |
| filingDate |
2001-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2007-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_eceffe21fd0da0b1c77965b8f5c3b58f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c8144a6a432d7b9775878fcd1dbaaaaa
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_697da836085328f252355234cf0c07bc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d7691f42b6762c2e083d33cff7b9abd3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ebd78a125bfd38f4a1409d859037a8bb |
| publicationDate |
2007-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-7176264-B2 |
| titleOfInvention |
Process for manufacture of a dendritic polyether |
| abstract |
A process for manufacture of a dendritic polyether comprising a core, derived from a compound having two or more hydroxyl groups, and at least one branching generation being built up from at least one hydroxyoxetane having one oxetane group and at least one hydroxyl group is disclosed. The process comprises ring opening addition to said core and ring opening polymerization of said hydroxyoxetane. A mixture of the core compound and at least one cationic initiator is prepared and said hydroxyoxetane is fed to said mixture at a rate resulting in and/or maintaining a reaction temperature below onset at thermal degradation and in an amount resulting in at least one branching generation. The initiator is present in an amount of 0.1–0.5% by weight calculated on said core and said oxetane, preferably in an amount giving a ratio hydroxyl groups to initiator of between 1:0.01 and 1:0.05. Yielded dendritic polyether is sebsequently neutralised by addition of at least one alkaline compound and optionally purified. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9068044-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2524938-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8541514-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102011076019-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010234518-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009314183-A1 |
| priorityDate |
2000-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |