http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1204430-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1374dd16777534b65ad4422333245af8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-82 |
| filingDate | 1968-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_50bf2573d87ec93fd2060f88ec3b2b30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_be57c50ba6d0d912252ecb1b84a8fb5a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4f4dc392edac597e4b4a0027893854d3 |
| publicationDate | 1970-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1204430-A |
| titleOfInvention | PROCESS FOR THE PURIFICATION OF CRUDE BIS-(beta-HYDROXYETHYL)TEREPHTHALATE |
| abstract | 1,204,430. Purification of bis-hydroxyethylterephthalate. TEIJIN Ltd. 5 Dec., 1968, No. 57896/68. Heading C2C. A process for the purification of crude bis-(2- hydroxyethyl)-terephthalate (BHET) comprises the steps of (a) dissolving crude BHET, with heating, in an aromatic solvent, e.g. benzene, toluene, xylene, chlorobenzene, dichlorobenzene, which is liquid at room temperature, (b) cooling the heated solution to precipitate the BHET and (c) separating the precipitated BHET, wherein in the step (a) the solution contains crude BHET uniformly distributed therein, at a concentration higher than the saturation solubility of crude BHET in the solvent at the temperature corresponding to the apparent melting-point, defined below, of the crude BHET in the same solvent, at an elevated temperature above the apparent melting point; and in step (b), cooling from the elevated temperature of the solution to a temperature below the apparent melting point rapidly, so as to avoid the precipitation of granular or lumpy solid BHET; said apparent melting point being defined as the temperature at which a mixture of 1 part by weight of BHET and 5 parts by weight of said solvent become molten when heated in a sealed tube. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-116284710-A |
| priorityDate | 1968-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.