| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_058e0be30e00d53858c67167df60aed5 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-204
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-34 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L71-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-765
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K47-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K47-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-70
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G65-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L101-16 |
| filingDate |
1981-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
1986-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
IE-51287-B1 |
| titleOfInvention |
Polymers of polyketene acetals and polyols |
| abstract |
Ortho ester polymers formed by condensation reaction between ketene acetals having a functionality of two or more and hydroxyl containing compounds having a functionality of two or more. The reaction proceeds without the evolution of small molecule by-products which must be removed by distillation in order to achieve high molecular weight. Hence, the process produces high molecular weight poly (ortho esters) in short reaction times, at essentially room temperature and at atmospheric pressure. Linear thermoplastic materials are produced when both the keten acetal and alcohol have functionalities of two. Because no volatile materials are produced, void-free, thermoset materials are produced when either or both the alcohol and ketene acetal have functionalities greater than two and crosslinking occurs. The polymers are bioerodible and are useful in the fabrication of devices and coatings for delivering beneficial agents. |
| priorityDate |
1980-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |