http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113292408-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cee575b7edbf2c3e8e6bbce9d990b524 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-78 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-55 |
| filingDate | 2021-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_009caaf282ab85a1b12b8fc17317dab1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_978058c0d7fd778a9b56634b817834e0 |
| publicationDate | 2021-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113292408-A |
| titleOfInvention | A process for producing o-chlorobenzaldehyde by chlorination rectification |
| abstract | The invention provides a new process for producing o-chlorobenzaldehyde by a chlorination rectification method. Using o-chlorotoluene and chlorine gas as raw materials, a tower type chlorination catalytic reaction rectification technology is used to synthesize o-chlorobenzyl chloride and o-chlorobenzylidene dichloride. Chlorine, the chlorinated solution is subjected to alkaline washing and vacuum distillation to obtain o-chlorobenzyl chloride with a content of more than 99.0%, and o-chlorobenzylidene dichloride is hydrolyzed, alkaline hydrolyzed and refined to obtain high-purity o-chlorobenzaldehyde; In the current production process, the catalyst used in the hydrolysis reaction is not active enough, the hydrolysis reaction time is long, the material polymerization is serious, the amount of residual liquid is large, the hydrolysis yield is low, and the waste liquid containing a large amount of toxic and harmful substances is directly discharged, which seriously pollutes the environment. defect. The chlorination reaction yield of the invention can reach more than 98.0%, the total yield of o-chlorobenzyl chloride product is more than 92%, the total yield of o-chlorobenzaldehyde product is more than 92%, and the utilization rate of chlorine can reach more than 90.0%. Compared with the same industry in China, it has the characteristics of high product yield, good quality and less environmental pollution. |
| priorityDate | 2021-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.