http://rdf.ncbi.nlm.nih.gov/pubchem/patent/MX-9710051-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9b61fc4b3f2f87a96fa9a884659ef385 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-65719 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-4841 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-6928 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-692 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-6574 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-6571 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-30 |
| filingDate | 1996-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a3191571070f87dd2d2e3c1ed33f7048 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df5ecf3b26fe934bd176152662516146 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_822c02b9c0b68a1413edf42e656291a2 |
| publicationDate | 1998-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | MX-9710051-A |
| titleOfInvention | A PROCESS FOR THE PREPARATION OF A MIXTURE WITH DOP CONTENT. |
| abstract | The invention relates to a process for the preparation of 2'-hydroxy-diphenyl-2-phosphinic acid in the form of a commercial mixture with 6-hydroxy- (6H) -dibenzo- (c, e), (1,2) -oxaphosphorine, the process being carried out on a commercial scale, this being simpler and cheaper than the previous ones, as a reaction in a single container without separating intermediate products and avoiding a distillation step, said process comprising the steps of: (a) adding o-phenyl-phenol to a mixture of PCl3 and a Lewis acid as a catalyst while simultaneously heating the reaction mixture; then the reaction mixture breaks up; (b) the resulting reaction mixture is allowed to cool and, with continuous stirring, hydrolyzes by mixing it first with water and then with a lower alkanol; (c) the product is then crystallized and stirring is continued, and (d) the crystalline product obtained is sucked, washed and dried. Furthermore, the invention relates to a commercial mixture thus prepared to produce copolycondensible fireproof substances for polyester fibers by producing a direct reaction of the mixture with itaconic acid or itaconic acid compounds, optionally together with one or more diols. |
| priorityDate | 1995-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.