| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3417ba63e77ff45dc810a70424359f60 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-183
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-81
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-85 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-183 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-85
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-87
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-81 |
| filingDate |
2006-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f2aceec955ccfdce8234ad7270fbc0cd |
| publicationDate |
2006-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2006128936-A1 |
| titleOfInvention |
Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters |
| abstract |
Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a composition comprising a hydroxyalkyl-terminated polyester oligomer. The hydroxyalkyl-terminated polyester oligomer is heated to produce a composition comprising an intermediate molecular weight polyester which preferably has a molecular weight between about 20,000 Daltons and about 70,000 Daltons. The intermediate molecular weight polyester is heated and a solvent is added prior to or during the heating process to produce a composition comprising a macrocyclic oligoester. An optional step is to separate the macrocyclic oligoester from the composition comprising the macrocyclic oligoester. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009245397-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009137749-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005282952-A1 |
| priorityDate |
2000-09-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |