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.)
Rohm and Haas Co
Original Assignee
Rohm and Haas 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
Priority claimed from US05/943,891external-prioritypatent/US4191812A/en
Priority claimed from US05/944,052external-prioritypatent/US4359537A/en
Priority claimed from US05/943,889external-prioritypatent/US4380590A/en
Application filed by Rohm and Haas CofiledCriticalRohm and Haas Co
Priority to CA000425727ApriorityCriticalpatent/CA1161197A/fr
Priority to CA000425728Aprioritypatent/CA1161597A/fr
Application grantedgrantedCritical
Publication of CA1150448ApublicationCriticalpatent/CA1150448A/fr
Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications
(AREA)
CA000335831A1978-09-191979-09-18Resines echangeuses d'ions, sous forme d'emulsion de copolymere, et procede d'echange ionique ainsi obtenu
ExpiredCA1150448A
(fr)
Copolymères d'acrylamide et de diméthylaminopropylacrylamide comme floculants et procédé de déshydratation de boues d'épuration par ces floculants