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http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-16
filingDate 1976-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date>
grantDate 1977-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3b6efb7cfa89a740cb3ecbf3c7314e1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94d4c3d7568d047010f877f1e3e143ca
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publicationDate 1977-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber US-4015991-A
titleOfInvention Low fluid loss cementing compositions containing hydrolyzed acrylamide/2-acrylamido-2-methylpropane sulfonic acid derivative copolymers and their use
abstract Improved cementing compositions and their use in cementing operations is disclosed, wherein copolymers of hydrolyzed acrylamide and 2-acrylamido-2-methylpropane sulfonic acid derivatives are used as fluid loss additives for aqueous hydraulic cement slurries.
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