http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0638549-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_623d02c6091d38f6b59470d9ab8ce72c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C317-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-22 |
| filingDate | 1994-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_099b059c1ddbd27747fef7b7409925be http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_807a7c1a3885738962debb5eab0f13ad http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_079195f33472b9755d336e68847fb59c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d671a7373a9172c03b8c32a17e2cc98b |
| publicationDate | 1995-02-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0638549-A1 |
| titleOfInvention | A 4,4'-dihydroxydiphenylsulfone monomer composition and a process for production thereof |
| abstract | A 4,4'-dihydroxydiphenylsulfone monomer composition comprises a salt of an organic acid in the amount corresponding to an amount of the metal component of 10 to 10,000 ppm by weight of the composition. A process for production of a 4,4'-dihydroxydiphenylsulfone monomer composition comprises adding a salt of an organic acid to a solution of 4,4'-dihydroxydiphenylsulfone and drying the mixture to form a composition comprising the salt of an organic acid in the amount corresponding to an amount of the metal component of 10 to 10,000 ppm by weight. Another process for production of a 4,4'-dihydroxydiphenylsulfone monomer composition comprises providing a salt of an organic acid, in the amount corresponding to an amount of the metal component of 10 to 10,000 ppm by weight, to 4,4'-dihydroxydiphenylsulfone in the process of synthesizing a crude 4,4'-dihydroxydiphenylsulfone or in the process of purifying a crude 4,4'-dihydroxydiphenylsulfone. The 4,4'-dihydroxydiphenylsulfone monomer composition is useful as a material in the field of the polymer industry, such as plastics having excellent resistance to yellowing. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9353220-B2 |
| priorityDate | 1993-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 146.