http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1390655-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8efbae6056f7ee0275c50b0f1e7243be |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-6924 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-388 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-5397 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5325 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L77-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K21-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-692 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-5397 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L101-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G85-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L23-00 |
| filingDate | 1972-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1975-04-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1390655-A |
| titleOfInvention | Preparation of flame-retardant organo-phosphorus compounds and flame-retardant polymer compositions containing them |
| abstract | 1390655 Halogen-containing phosphine oxides M & T CHEMICALS Inc 26 Oct 1972 [12 Nov 1971] 49418/72 Heading C2P [Also in Division C3] Tertiary phosphine oxides or sulphides of the general formula wherein Ar which may contain an inert substituent is a chlorinated or brominated arylene hydrocarbon radical containing up to 12 carbon atoms, R<SP>1</SP> which may contain an inert substituent is selected from ArYH and alkyl, cycloalkyl, aryl, alkaryl or aralkyl radicals containing up to 12 carbon atoms, Y is -NH- or -O- and Z is O or S are obtained by reacting chlorine or bromine with a corresponding phosphine oxide or sulphide containing at least two amino- or hydroxyl substituted aromatic radicals. From 1 to 3 atoms of Br or Cl is suitably introduced into each Ar radical. The products are useful as flame-retardant additives to polymers or may be reacted with various polyfunctional compounds to give flame retardant polymers. Tris (m-nitrophenyl) phospine oxide is obtained by nitrating triphenyl phosphine oxide with HNO 3 /H 2 SO 4 and is converted to tris (maminophenyl)phosphine oxide by treatment with SnC1 2 /HC1. The product is then brominated to form tris(2,4-dibromo-5-aminophenyl) phosphine oxide. Tris (m-hydroxyphenyl) phosphine oxide is obtained by treating the corresponding tris (m-aminophenyl) compound dissolved in aqueous H 2 SO 4 with an aqueous solution of NaNO 2 and then hydrolysing. Methyl diphenyl phosphine oxide is obtained by reacting methyl magnesium chloride with triphenyl phosphine oxide in tetrahydrofuran and is converted to methyl bis (m-nitrophenyl) phosphine oxide by nitration with HNO 3 /H 2 SO 4 . |
| priorityDate | 1971-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.