http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IT-1060206-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_35cede0c9a6f095d47744b36feb002ff |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C- |
| filingDate | 1976-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1982-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aba2bc9b43ad3bb8fe521e13298d81e2 |
| publicationDate | 1982-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | IT-1060206-B |
| titleOfInvention | PROCESS FOR ISOPRENE PRODUCTION |
| abstract | In the prodn. of isoprene (I) by reacting HCHO with isobutylene (II) and/or t.-butyl alcohol (III) in the liq. phase at 200 degrees C in the presence of a catalyst (IV), (IV) is H2NSO3-H or an aromatic ammonium cpd. (IVa) or condensed ammonium cpd. (IVb) of the naphthalene series with a sulpho gp., of the formula (IVa) or (IVb) (where R1 and R2 are H, alkyl, aryl, alkylaryl or aralkyl. In (IVa), the sulpho gp. can be in the o-, m- or p-position) or their reaction prods. with HCHO. The catalyst is less aggressive than usual, does not react with unsatd. synthetic prods., has a high b.pt. and is resistant to hydrolysis. The process technology can be simplified and the yield increased. In an example, a mixt. of HCHO soln., (III) soln., (II) and sulphanilic acid was heated 30 mins. at 130 degrees C and 35 mins. at 180 degrees C, in a sealed ampoule, then chilled. The (I) yield was 74.0 mole % w.r.t. HCHO. |
| priorityDate | 1976-01-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.