| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2bb5acbbc531c33037e4e5ff2400471a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ac23ad7ddc3242bd5c6fb7603c9ee834
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G2380-00 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G64-305
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-7671
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-664
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D175-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-44 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-44 |
| filingDate |
2012-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2a5278397d7e01526f986166cbef04ca
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7467eb9299c5f159bb1147804115c036 |
| publicationDate |
2012-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2012165502-A1 |
| titleOfInvention |
Method for producing polycarbonate polyols, polyurethane using said polycarbonate polyols |
| abstract |
Provided is a method for producing polycarbonate polyols having a specific structure and specific properties in which a dihydroxy compound and a carbonic diester undergo polycondensation by ester exchange reactions in the presence of a catalyst, wherein at least one reactor has an internal volume of at least 20L and is equipped with a reflux condenser and a heating means for heating the reactor using a heat medium, the temperature difference between the temperature of said heat medium and that of the reaction fluid in the reactor is at least 5°C, and the total amount of the monomers distilled over all stages of the reaction is at most 15 weight% of the total amount of raw monomers. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-7230366-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107336537-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2020023761-A |
| priorityDate |
2011-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |