http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112574020-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3971c65e272f39218fbd8985600f81b0 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-14 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-81 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-81 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-713 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-403 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00 |
| filingDate | 2020-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b5410952557eb9a32e85cd8d2d1f4870 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fdf6ec75256f32271c92d869496939d8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c1cebbe8ba79b6bd774337d10f57d34d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_01ce8ca3d1c0e509729accb4a4dce386 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e95b05dee82bd421aa911b4561bc6d3f |
| publicationDate | 2021-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112574020-A |
| titleOfInvention | A kind of preparation method of high-quality 1,3-cyclohexanedione product |
| abstract | The invention provides a method for preparing a high-quality 1,3-cyclohexanedione product, which comprises the steps of first performing a hydrogenation reaction between resorcinol and a strong base in the presence of hydrogen and a solid catalyst, and after the reaction is completed, solid-liquid separation is performed to remove the solid After the catalyst, a hydrogenation reaction solution is obtained; then in the presence of high-quality crystal seeds and water, the hydrogenation reaction solution and hydrochloric acid are simultaneously added, and after acidification, the temperature is lowered for crystallization, and the obtained crystals are dried to obtain high-quality 1,3-cyclohexanedione Product; the high-quality crystal seed is 1,3-cyclohexanedione solid dissolved in an organic solvent, then cooled and crystallized, and the obtained crystal is the high-quality 1,3-cyclohexanedione crystal seed. The high-quality 1,3-cyclohexanedione product obtained by the present invention is a white crystal, the product does not need recrystallization and purification, its inorganic salt content is as low as 0.5% or less, its purity is higher than 99.9%, and no refrigeration is required during transportation and storage. , Even in international shipping, it is not easy to discolor and agglomerate. |
| priorityDate | 2020-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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