http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102266729-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_89d8e7355750aa815842a3fa5b382c19 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D71-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-04 |
| filingDate | 2010-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a420297ab1ffc2465f71b28e941283c8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f966f607ed8ac4929716f4b2bc0263aa |
| publicationDate | 2013-09-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102266729-B |
| titleOfInvention | Organic-inorganic hydrid film used for pervaporation separation of methanol/methyl acetate azeotropic system and preparation method thereof |
| abstract | The invention discloses an organic-inorganic hydrid film used for pervaporation separation of a methanol/methyl acetate azeotropic system and a preparation method thereof. The preparation method comprises the following processes of: (1) heating and stirring polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), a 4A molecular sieve and a solvent of dimethyl sulfoxide according to proportions in a constant-temperature water bath to obtain a PVA/PVP/4A molecular sieve mixing solution; and (2) weighing DAS (Dialdehyde Starch) according to a proportion, dissolving into the dimethyl sulfoxide, stirring in a dark place and dissolving, then adding the equivalent PVA/PVP/4A molecular sieve mixing solution obtained in the step (1) to the solution, and uniformly stirring to obtain a casting film solution. The casting film solution is filtered and defoamed, and then the film is scraped from glass and dried. The dried film is placed below a high-pressure mercury lamp and irradiated for 30-60 min toensure that coupling reaction is completed so as to obtain a 4A molecular sieve-filled DAS-crosslinking polyvinyl alcohol/polyvinylpyrrolidone organic-inorganic hydrid film. The organic-inorganic hydrid film has favorable mechanical strength and chemical stability and a higher pervaporation separation coefficient and can effectively break azeotropic components and has better separation degree than the traditional method. |
| priorityDate | 2010-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.