US 4,719,282 AGranted

Polycationic block copolymer

AssigneeMiranol Inc.

InventorsRichard J. Nadolsky, Bharat B. Desai

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Abstract

Novel polycationic block copolymers useful as antistatic agents in detergent formulations and as flocculating agents are obtained by first forming a block of units by reacting a monomer of the formula II ##STR1## wherein each of R.sub.5, R.sub.6, R.sub.7 and R.sub.8 may be the same or different and is selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 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 --CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --O--CH.sub.2 --, --(CH.sub.2).sub.t -- AND --CH.sub.2 CHOHCH.sub.2 -- where t is an integer from 2 to 6 and thereafter reacting the product so formed with a compound of the formula III ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each individually selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 hydroxyalkyl and polyoxyalkylne and p, and q are each individually integers of form 1 to 6 and, if necessary, in order to ensure a total molar ratio of compounds of Formula 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.

Claims16

Dependent claims

Block copolymer of the formula:

[Q.sub.w L(AL).sub.x (BL).sub.y Q.sub.w ].sup.2(x+y)+ 2(x+y)D.sup.-
wherein
A is ##STR14## and B is ##STR15## wherein:
R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, and R.sub.8 are the same or different and are selected from the group consisting of C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 hydroxyalkyl, or hydroxy polyoxyalkylene;
D is a halide ion;
L is a linkage derived from a dihalide after removal of the halogen atoms, x and y are integers ranging from 1-100 and Q is (BL).sub.y where the bonds between L and A or B are carbon-nitrogen bonds formed by quaternization of the tertiary amine functions of A or B by the organic dihalides from which L is derived and W is 0 or 1 which are obtained by first forming a block of units by reacting a monomer of the formula II ##STR16## wherein each of R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are the same or different and is selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 hydroxy alkyl hydroxy 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 --CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --, --(CH.sub.2).sub.t -- or --CH.sub.2 CHOHCH.sub.2 -- where t is an integer from 2 to 6 and thereafter reacting the product so formed with a compound of the formula III ##STR17## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each individually selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 hydroxyalkyl and polyoxyalkylene and p, and q are each individually integers of from 1 to 6 and, if the amount of compound of the formula Hal--L--Hal used in the first reaction was not sufficient 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.

8 more elements

A process for preparing block copolymers which comprises first forming a block of units by reacting a monomer of the formula II ##STR20## wherein each of R.sub.5, R.sub.6, R.sub.7 and R.sub.8 may be the same or different and is selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 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 --CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 --, --(CH.sub.2).sub.t -- and --CH.sub.2 CHOHCH.sub.2 -- where t is an integer from 2 to 6 and thereafter reacting the product so formed with a compound of the formula III ##STR21## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each individually selected from the group consisting of C.sub.1-3 alkyl, C.sub.1-3 hydroxyalkyl and polyoxyalkylene and p, and q are each individually integers of from 1 to 6 and, if the amount of compound of the formula Hal--L--Hal used in the first reaction was not sufficient, 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.

2 more elements

Dependencies are inferred from the claim text.