| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fb2edb0f237a90d982f2dce09ad61976 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C46-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-42 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C46-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C50-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-89
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 |
| filingDate |
1979-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1981-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c64c96c5df57c71b3c4f0d3e08fa2a49
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_14e0965618aeede2b3074c3a579d8700
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_03b838403b72983ac434b273fa558931 |
| publicationDate |
1981-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4277257-A |
| titleOfInvention |
Process for preventing scale deposition |
| abstract |
A scale deposition from an aqueous slurry of naphthoquinone and phthalic acid can be prevented by adding fine crystals of phthalic acid to the aqueous slurry of naphthoquinone and phthalic acid collected, which slurry is obtained by contacting a gas resulting from a catalytic gas phase oxidation of naphthalene with water or a mother liquor recycled. The fine crystals of phthalic acid have diameters of less than 100μ, preferably 10 to 40μ, and can be in an aqueous slurry of phthalic acid pulverized by a pulverizer. |
| priorityDate |
1979-02-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |