http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1330254-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-6584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-4006 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-3889 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-6571 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-6584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-6571 |
| filingDate | 1971-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1973-09-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1330254-A |
| titleOfInvention | Process for the preparation of organic phosphorus compounds |
| abstract | 1330254 Phosphonic acid esters and amides; cyclic phosphorus compounds BAYER AG 19 April 1971 [14 April 1970] 26164/71 Heading C2P [Also in Division C3] Compounds of the Formula I where X is hydrogen, methyl, chloromethyl or hydroxymethyl, Y is oxygen or NR<SP>1111</SP>, R, R<SP>1</SP> and R<SP>1111</SP> are hydrogen, C 1-4 alkyl, C 6-9 aryl or C 6-9 alkaryl, n is 1 or 2, R<SP>11</SP> is hydrogen when n is 1 and hydrogen or hydroxymethyl when n is 2, R<SP>111</SP> is hydrogen when n is 1 and hydrogen, C 1-4 alkyl or hydroxymethyl when n is 2, and m is 1, 2 or 3, are prepared by reacting a compound of Formula II: with a compound of Formula III: or a polymer of a compound of this formula, where R and R<SP>1</SP> are hydrogen, and an amine of Formula IV: The carbonyl compound III may first be reacted with the amine IV to form a condensate which is then reacted with the phosphorus compound II to form a compound of Formula II, which may be isolated, in which the hydrogen atom attached to the phosphorus atom is replaced by the amine IV linked through a group -CRR<SP>1</SP>-. This intermediate may then be hydrolysed with water to form a compound of Formula I. The compounds of Formula I are used as starting compounds in the preparation of flame-resistant polyurethane resins by the polyisocyanate polyaddition process. The compounds of Formula II may be prepared by reacting a trialkyl phosphite with two moles of a compound of the Formula V: In a comparison example a compound of Formula VI: n which R 1 and R 2 are alkylene or hydroxyalkylene, R 4 and R 5 are alkylene and R 3 is optionally substituted methylene, is prepared by reacting phosphorous acid with propylene oxide to form a bis-(hydroxyalkyl)phosphite, which is then reacted with a formaldehyde/ diethanolamine condensate, the product being dark brown. |
| priorityDate | 1970-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.