http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9006284-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_260220c525b214105ee48ee2d77a5bf4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B35-061 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B35-06 |
| filingDate | 1989-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ebc9fc4fe829e6d90b0646e4cb5a6de4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_84c0e493d86934ae166f279aa4bd04db http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0fa96db62bd125595c24f9eccdb9aaf6 |
| publicationDate | 1990-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-9006284-A2 |
| titleOfInvention | Process for recovering boron trifluoride from an impure gaseous boron trifluoride residue |
| abstract | The present invention provides a process for recovering boron trifluoride from an impure gaseous boron trifluoride residue. The process comprises: (a) feeding an impure gaseous boron trifluoride residue containing sulfur dioxide as an impurity into a mixture of boric and sulfuric acids wherein the acid mixture absorbs boron trifluoride from the impure boron trifluoride residue and slightly absorbs or does not absorb sulfur dioxide from the impure gaseous boron trifluoride residue; and (b) removing the unabsorbed sulfur dioxide from the acid mixture. The present invention also provides a boron trifluoride preparation and purification process. The process comprises the steps of (a) reacting boric acid and fluorosulfuric acid in sulfuric acid to form a product; (b) distilling the product from step (a) to yield pure boron trifluoride and impure gaseous boron trifluoride; (c) feeding the impure gaseous boron trifluoride residue containing sulfur dioxide as an impurity into a mixture of boric and sulfuric acids wherein the acid mixture absorbs boron trifluoride from the impure gaseous boron trifluoride residue and only slightly absorbs sulfur dioxide from the impure gaseous boron trifluoride residue; and (d) removing the unabsorbed sulfur dioxide from the acid mixture. The recovered boron trifluoride may be used as a catalyst. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0922672-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6641791-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2772014-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1121270-C |
| priorityDate | 1988-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.