| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4c398892c36ca88de7755044897232b2 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2367-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-62 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J11-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J11-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-29
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J11-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-52 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J11-16 |
| filingDate |
2019-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_de95f43683cacc8a728d707abefa09c1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33dae338a1d56f2f88edc6f5aa53a8fb |
| publicationDate |
2021-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2586249-A |
| titleOfInvention |
Polymer recycling |
| abstract |
A method for recycling polyethylene terephthalate (PET) to produce bis(2-hydroxyethyl) terephthalate (BHET) comprises the steps of (a) depolymerising PET in the presence of ethylene glycol and a catalyst system in a series of at least three depolymerisation reactors 10 to form a depolymerised mixture comprising BHET; (b) crystallising a precipitate comprising BHET from the depolymerised mixture; (c) dissolving the precipitate in methanol to form a solution comprising BHET; (d) removing impurities from the solution to form a purified solution comprising BHET; and (e) crystallising a purified product comprising BHET from the purified solution. Suitable apparatus for such a method is shown in figure 3, and the use of urea in a catalyst system therefor, are also provided. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/NL-2028499-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022271014-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/NL-2028500-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022271013-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114292285-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114292285-A |
| priorityDate |
2019-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |