Patent ID: 6444770
Filing Date: 2002-09-03
Classification: A01N,C08F,D06M

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 H2C&boxH;CHâ€”(CH2)nâ€³âˆ’CONH2 â€ƒin which nâ€³ 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) (H2C&boxH;C(R1)â€”(CH2)nâ€”Aâ€”(CH2)nâ€²â€”N+(R2)(R3)(R4))Xâˆ’â€ƒâ€ƒ(I) â€ƒin 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 nâ€² each represents, independently of one another, a non-zero integer at most equal to 15, A represents a divalent carboxyl or amide functional group, and Xâˆ’ represents a counterion.