| abstract |
A copolymer of acrylamide or of an acrylamide derivative and of trialkylammonium salts which is a radical polymerization product, in the presence of an initiator,of at least a first monomer chosen from acrylamide and its derivatives of formula in which n'' is an integer which can vary from 1 to 5,and of a second monomer chosen from trialkylammonium salts corresponding to the following formula (I) in which,R1 represents H or an alkyl group having from 1 to 3 carbon atoms,R2, R3 and R4, which are identical or different, each represents an alkyl group having from 1 to 3 carbon atoms,n and n' each represents, independently of one another, a non-zero integer at most equal to 15,A represents a divalent carboxyl or amide functional group, andX- represents a counterion. |