Cationic polymers

Details Cationic polymers Cationic polymers

C - Chemistry, Metallurgy

08

G

C08G 12/22 (2006.01) C08F 8/44 (2006.01) C08F 20/60 (2006.01) C08L 51/02 (2006.01) C08L 61/20 (2006.01) D21H 17/54 (2006.01)

Patent

CA 2082209

Case 157-5522 ABSTRACT A cationic polymer useful as an additive in paper-making processes comprises at least one moiety of the formula I Image wherein R2 is selected from hydrogen and R4; R3 is selected from hydrogen and C1-C3 alkyl; the groups R4 and R5 are independently selected from C1-C6 alkyl, cycloalkyl, C2-C6 alkenyl, aryl and araikyl, these being optionally substituted with at least one group which is selected from C1-C6 hydroxyalkyl, C1-C6 aminoalkyl, C1-C6 sulphoalkyl and C1-C6 carboxyalkyl, carboxy, and sulpho groups, where present, being in either acid or salt form, or the groups R4 and R5 together with the nitrogen atom to which they are attached form a heterocyclic ring which may optionally comprise other heterocyclic atoms; R6, R8, R9 and, where present, R7 and R10 are independently selected from hydrogen, a hydrocarbon radical having from 1 to 8 carbon atoms and being bonded to the nitrogen atom through an aliphatic carbon atom on this radical, a radical having a sequence of from 4 to 8 carbon atoms which sequence is interrupted by -O- or -NR11-, with the proviso that a maximum of one of R8, R9, R10 shall contain a moiety -NR11-, R11 being selected from hydrogen, methyl, ethyl and a group of the formula Case 157-5522 Image wherein R12, R13 and, where present, R14 are independently selected from hydrogen, methyl and ethyl, or R12 and R13 together with the nitrogen atom to which they are attached form an aliphatic heterocycle with from 4 to 5 carbon atoms, and m is an integer from 1-3; X is selected from C3-C6 alkylene, C1-C6 hydroxyalkylene and C4-C6 alkylene interrupted by -0-; and n is an integer of from 0 to 20.

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