Polycationic block copolymers.

摘要

Block copolymers of the formula: wherein: R1, R2, R3, R4, R5, R6, R7, and R8 may be the same or different and are generally selected from the group consisting of C1-C3 alkyl, C1-C3 hydroxyalkyl, or polyoxyalkylene; D is a halide ion; L is a linkage derived from a dihalide, x and y are integers ranging from 1-100 and Q is either non-existent or is (BL)y where the bonds between L and A or B are carbon-nitrogen bonds formed by quaternization of the tertiary amine functions of A and B by the organic dihalides from which L is derived which are obtained by first forming a block of units by reacting a monomer of the formula II wherein each of R5, R6, R7, and R8 may be the same or different and is selected from the group consisting of C1-3 alkyl, C1-3 hydroxy alkyl and polyoxyalkylene, m is an integer from 0 to 34 and r and s are the same or different and are integers from 1 to 6, with a molar excess of a dihalide of the formula Hal - L - Hal wherein Hal represents a halogen atom and L is selected from -CH2CH2-O-CH2CH2-, -CH2CH2-O-CH2CH2-O-CH2CH2-, -(CH2)t- and -CH2CHOHCH2- where t is an integer from 2 to 6 and thereafter reacting the product so formed with a compound of the formula III wherein R1, R2, R3, and R4, are each individually selected from the group consisting of C1-3 alkyl, C1-3 hydroxyalkyl and polyoxyalkylene and p, and q are each individually integers of from 1 to 6 and, if necessary, in order to ensure a total molar ratio of compounds of Formulae II and III to those of the formula Hal - L - Hal of 1:1, reacting the product with further compound of the formula Hal - L - Hal are of use inter alia as antistatic agents in detergent formulations and as flocculating agents.