Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Cyanamid CofiledCriticalAmerican Cyanamid Co
Priority to ES0326195ApriorityCriticalpatent/ES326195A3/en
Publication of ES326195A3publicationCriticalpatent/ES326195A3/en
Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications
(AREA)
Abstract
Catalytic process for the polymerization by the addition of monomers susceptible to addition polymerization and containing a high proportion of acrylonitrile in solution of at least 85% by weight of acrylonitrile, in an acidic aqueous medium, characterized in that the polymerization is carried out in presence of an oxidation-reduction catalytic system comprising a total of about 0.01 to about 1.0 percent chloric acid and a total of about 0.03 to about 3.0 percent sulfuric acid based on weight of the monomer used while maintaining the weight ratio of active components of the catalyst to the unreacted monomer substantially constant throughout the polymerization reaction by continuously introducing additional amounts of catalyst components after the polymerization reaction has been initiated catalytic, so a polymer is produced from molecular weight substantially constant during the entire period of the polymerization reaction. (Machine-translation by Google Translate, not legally binding)
ES0326195A1966-04-301966-04-30Catalytic procedure for additional polymerization. (Machine-translation by Google Translate, not legally binding)
ExpiredES326195A3
(en)
Procedure for the preparation of 3-cyan-3-5-5-trimethylcyclohexanone of isoforone and cyanidic acid. (Machine-translation by Google Translate, not legally binding)