Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e663a57d048402cc5ef1cd2b1d3bf7fc |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G65-2603 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-406 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-0208 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-0216 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F15-06 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F15-06 |
filingDate |
2010-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a85d5c99c9ca1401076b4ab6dbac9762 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fa85c31bab045372842fede90347d6b5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4f6b742d9b088f22d2742a0198f3d356 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_124c2fcfe418f15cb2b0410fb1c089e1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_350db545949361cd6449a12ac6998d89 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ea19a3223c6ef71e3799ad890fbe294 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e51fe1ee464705e651026b49d22d9f28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e7676c9d624f0d43d1ebd614cc1c4056 |
publicationDate |
2013-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
EP-2556101-A1 |
titleOfInvention |
Precise control of molecular weight and chain shape in carbon dioxide/epoxide alternating copolymerization and preparation of low-molecular-weight poly(alkylene carbonate) thereby |
abstract |
This invention relates to a method of preparing poly(alkylene carbonate) that has a molecular weight and polymer chain structure precisely controlled by adding a chain transfer agent composed of a compound having an alcohol or carboxylic acid functional group upon alternating copolymerization of an epoxide compound and carbon dioxide using a catalyst composed of a trivalent metal complex compound synthesized from a quaternary ammonium salt-containing Salen type ligand, and to a polymer compound prepared thereby. According to this invention, the polymer compound having a star-shaped chain as well as the polymer having a linear chain can be prepared. The low-molecular-weight poly(alkylene carbonate) has an -OH terminal group and can be used alone as a coating agent, etc., and also in mixtures with an isocyanate compound and thus can be easily utilized to prepare polyurethane. |
priorityDate |
2010-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |