| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_572ab3dc169a753db545ebb270bf4e36 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D279-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-004 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D279-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F114-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C23F14-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F2-00 |
| filingDate |
1988-07-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e104de47b1913c51f46806a17e27a8db
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22e0753cf9776a9e990d650a1b19ddda |
| publicationDate |
1989-02-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-8900993-A1 |
| titleOfInvention |
Phenothiazine dimers and oligomers, process for preparing and use in reactor scale prevention |
| abstract |
A composition having the formula (I), wherein n has an average value of one to about five, is disclosed for use in reducing or eliminating the formation of reactor scale during the polymerization of vinyl chloride and comonomers. The composition is prepared by reacting phenothiazine with formaldehyde in the presence of a liquid diluent that is a solvent for the phenothiazine, but a non-solvent for the dimer of phenothiazine and formaldehyde. The process of the invention is preferably conducted in the presence of a strong acid catalyst. The formaldehyde is preferably added slowly to the reaction mixture over the course of the reaction. The product can be filtered and dried. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0496816-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0496816-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007020932-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8148565-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6174986-B1 |
| priorityDate |
1987-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |