Unsaturated polyaminopolymers, derivatives thereof and processes

Details Unsaturated polyaminopolymers, derivatives thereof and processes Unsaturated polyaminopolymers, derivatives thereof and processes

1993-11-08

1994-12-13

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528340, 528342, 528345, 525420, 525421, 525426, 525430, 525435, C08G 6948

Patent

active

053730879

ABSTRACT:
A process for preparing a polyaminopolymer which contains functionality comprises the steps of (a) contacting a polyfunctional amine with an unsaturated alkylating agent under reaction conditions to form an amine/unsaturated alkylating agent adduct; (b) contacting the adduct with a polyfunctional compound such that a polyaminopolymer is formed: (e) contacting the polyaminopolymer with a halogen, hypohalous acid or precursor thereof such that a polyaminopolymer having halohydrin or dihalo functionality is formed, and (d) raising the pH of the polyaminopolymer having halohydrin or vicinal dihalo functionality sufficiently to cause an increase in molecular weight. Alternatively, the invention is a process having steps (a), (b), (c) and optionally (d), but with a step (h) between steps (b) and (c) of contacting the polyaminopolymer with a crosslinking agent therefor having at least two functional groups reactive with amine groups such that a crosslinked polyaminopolymer is formed. Polyaminopolymers so prepared, papers using such polymers, and processes for preparing such papers are novel. The papers preferably have improved wet strength. The polyaminopolymers are useful when dried (especially freeze dried) and redissolved. Certain of the polyamino-polymers have structures of Formula IV:

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