| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2666
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-20 |
| filingDate |
2003-12-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_51cf76a9d590265b1308477f66730d28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2dd688806ae8aa93aed6144d0af4433d |
| publicationDate |
2005-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
KR-20050092717-A |
| titleOfInvention |
Method for the production of tetrahydrofuran copolymers |
| abstract |
The present invention relates to a one-step process for preparing polyoxyalkylene glycols having a specific molecular weight by copolymerizing alpha, omega-diol and tetrahydrofuran as comonomers in the presence of heteropolyacids and hydrocarbons. According to the method, the mixture of water and the hydrocarbon is distilled from the polymerization. The present invention is characterized by terminating the polymerization by adding water, comonomers, butanediol or butanediol-water mixtures when a particular molecular weight is achieved. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100722369-B1 |
| priorityDate |
2002-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |