http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3685523-D1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-81 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-80 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-565 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G45-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G51-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-81 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-79 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G53-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01G37-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 |
| filingDate | 1986-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1992-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7392f7ae9129a0a6a851a506ba69a126 |
| publicationDate | 1992-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-3685523-D1 |
| titleOfInvention | METHOD FOR ISOLATING P-HYDROXYBENZALDEHYDE. |
| abstract | Process is for isolation of p-hydroxybenzaldehyde (I) from a reaction mixt. obtd. by oxidn. of p-cresol (II) with O2 or O2-contg. gas in MeOH in presence of NaOH or KOH and a manganese, nickel, chromium or cobalt salt. The process comprises: (i) treating the reaction mixt. with water; (ii) heating theobtd. soln.; (iii) filtering off the obtd. ppte. of hydrated Mn, Ni, Cr or Co oxide; (iv) distilling off MeOH from the filtrate; (v) cooling the remaining aq. soln.; and (vi) allowing (I) to crystallise as the Na or K salt. Alternatively the process comprises: (i') spray-drying the reaction mixt.; (ii') dissolving the soluble components of the residue in hot water; (iii') filtering off the undissolved hydrated Mn, Ni, Cr or Co oxide; and (iv') crystallising (I) as Na or K salt by cooling the filtrate. A further alternative process comprises: (i'') diluting the reaction mixt. with MeOH; (ii'') filtering off the undissolved hydrated Mn, Ni, Cr or Co oxide; (iii'') spray-drying the filtrate; (iv'') dissolving the residue in hot water; and (v'') crystallising (I) as Na or K salt by cooling the soln. |
| priorityDate | 1985-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.