http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H11502548-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4854 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2657 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-668 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-668 |
| filingDate | 1996-01-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1999-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H11502548-A |
| titleOfInvention | Method for producing tetrahydrofuran polymer |
| abstract | (57) [Summary]nHomopolymerization of tetrahydrofuran using an acid-treated, calcined and granulated aluminum silicate catalyst consisting of amorphous aluminum silicate, zeolite or kaolin in the presence of a compound having a reactive hydrogen or a carboxylic anhydride. Or continuously or discontinuously producing a tetrahydrofuran polymer by copolymerization of tetrahydrofuran with a 1,2-alkylene oxide. During the polymerization, the concentration of carboxylic anhydride or alkylene oxide in the polymerization batch is increased from 1% by weight. By keeping it constant below, the formation of cyclic ethers is sufficiently suppressed and a very narrow distribution of the polymer is obtained. The catalysts exhibit a heretofore unknown activity in the form of granules, producing a very narrow distribution of polymers with low color numbers and acid numbers. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2012524146-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2013514432-A |
| priorityDate | 1995-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.