http://rdf.ncbi.nlm.nih.gov/pubchem/patent/NL-7805509-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_af99df08b153738cd418446a75d09bfc |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5442 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-54 |
| filingDate | 1978-05-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1979-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | NL-7805509-A |
| titleOfInvention | PROCESS FOR PREPARING TRI-SUBSTITUTED (2,5-DIHYDROXYPHENYL) PHOSPHONIUM SALTS. |
| abstract | Phosphonium cpd. of formula (I): (where R1, R2 and R3 are 1-20C hydrocarbon gps., opt. carrying inert substits., and A- is an inert anion) is prepd. by reacting stoichiometric amts. of (a) R1R2R3P, (b) p-benzoquinone, and (c) aprotic acid of formula H+A-. Reaction is in a liq. medium consisting of a 1-4C alkanol, 1,2-ethylene glycol, 1,2-propylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tripropylene glycol, and/or a 1-4C alkyl ether of these glycols. (I) is a latent catalyst for pre-catalysed epoxy resins. (I) is obtd. as a soln. in the reaction medium and can be used, without isolation and purificn. to catalyse the reaction of epoxides with phenols and/or carboxylic acids or anhydrides. |
| priorityDate | 1978-05-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.