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filingDate 1996-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date>
grantDate 1996-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e7f89b72acc85ba02b4a2dfae0ce03d
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publicationDate 1996-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber US-5569770-A
titleOfInvention Method for the production of N-Vinyl-2-Pyrrolidone by gas-phase dehydration reaction at atomospheric pressure
abstract The present invention relates to a method for the production of N-vinyl-2-pyrrolidone by gas-phase reaction at atmospheric pressure. The method is characterized in that a gas-phase reaction is conducted by using N- beta -Hydroxyethyl-2-Pyrrolidones serving as raw materials, at a temperature of 300 DEG -450 DEG C., a space velocity of 500-4500 hr-1 in the presence of a mixed oxide of group IV elements, or an oxide of group IV elements, which has been modified by group I or group II elements.
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006281928-A1
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