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filingDate 1990-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date>
grantDate 1994-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1a8de6ad303f33e81ad84f65c2cefcb6
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publicationDate 1994-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber US-5338881-A
titleOfInvention Process for preparing diketones
abstract This invention concerns a process for preparing diketones and keto-acids by reacting a dicarboxylic acid and an aromatic compound in the presence of an alkylsulfonic acid such as methanesulfonic acid and a phosphorus pentoxide. The diketones and keto-acids can be used to prepare polyketones which are useful as molding plastics, coatings, films, fibers, and the like.
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