| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_27745c78e7cc8b15e27497d3bd1d3d7e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_62015fe4282c141d844c2df6f0ab0e71
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3dcb696f254a75849ef9a4564fcaefd4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bd05ae592099a959b52f2cd1ac264c26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e2fab123489bef95fba02284d96123ff
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9e4f52c7e00da9481b64abdb83e99fa1 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-08 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D319-12 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D319-12 |
| filingDate |
2003-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c00a085bab22ccbcf3326aaa2d0fa044
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9b761ba83946abda598b0bd2daa38667
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a975d83ab6322a15e5d22f8995024699
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1bad8305d830fcdeaeba2005960385eb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6c69747da51f53b0f66836a255e94b65 |
| publicationDate |
2004-02-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2004014890-A1 |
| titleOfInvention |
Method of purifying lactide |
| abstract |
It is intended to provide a method of purifying lactide whereby crude lactide can be purified while consuming less energy and causing no heat denaturation to thereby give D- or L-lactide having a high optical purity. In a method of purifying lactide, solid crude lactide, which contains 80% by mass or more of D- or L-lactide based on the total amount of D-lactide and L-lactide, is fed as a starting material into a feeding port 3 provided in the lower part of a cylindrical vertical purification column 1. Then the material is lifted while stirring with a stirrer 2 provided in the purification column 1. In the purification column 1, the material is purified due to countercurrent contact of the downward flow of melted D- or L-lactide with the upward flow of the material. Then the purified solid lactide is taken out as a product from a discharge port 4 provided in the upper part of the purification column 1. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103788351-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2478098-C2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103788351-B |
| priorityDate |
2002-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |