http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-4210943-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D317-38 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-38 |
| filingDate | 1992-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c1af92807e816f79b133fb863f86144a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2ddeac42eba021bd471b32b51f275cdc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_334f2f6786ec215d993ae0d0e368fe4b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f70e4edd39820899e126b286a85e204d |
| publicationDate | 1993-10-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-4210943-A1 |
| titleOfInvention | Process for the preparation of alkylene carbonates |
| abstract | Alkylene carbonates of formula (I) are prepd. by reacting 1 mol. of an alkylene oxide of formula (II) with 1-10 (1-1.5) mols of CO2, at 40-250 (70-170) deg.C in the presence of an activatable catalyst of formula a(MX)/b(ZnY2), where activaton may be by addn. of a halogen cpd. of formula R3-Z. In formulae, R1 and R2 are H, (substd) 1-4C alkyl, (substd) 2-4C alkenyl or (substd). 6-12C aryl or may form a 5-8 member satd. carbocyclic ring with the 2C of the 3-membered ring; M is alkali metal, pref. Li, Na (pref.) or K (pref); Z, X and Y are Cl, Br, or I; a, and b = 0.001-2; and R3 is H, Cl, Br, iodine, the residue of an (in)organic acid halide, the residue of a benzyl-, benzal- or benzo-trihalide, 4-8C tert. alkyl, phenacyl, (meth)allyl or -CHR1-CHR2-OH, and may be Cl3 or Br3 if Z is iodine. Activation is pref. with a cpd. of formula R13-Z, where R13 is H (pref.) 4-6C tert. alkyl, or -CHR11-CHR12-CH (pref.) and Z is Cl, Br, (pref.) or I, pref. X and Y and Z are Br; R11 and R12 are H, Me, Et or Ph; and a:b = 20:1-1:5 (3-1:1). Activation may be before reuse of the catalyst or before 1st use. Opt. activation is with a halohydrin of formula Z-CHR1-CHR2-OH, added as such or formed in situ. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5489696-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0628553-A1 |
| priorityDate | 1992-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 104.