Unsaturated polyaminopolymer, derivatives thereof and processes

Details Unsaturated polyaminopolymer, derivatives thereof and processes Unsaturated polyaminopolymer, derivatives thereof and processes

1992-08-11

1994-01-11

Anderson, Harold D.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525426, 525430, 525435, 528335, 528342, 528345, C08G 6948

Patent

active

052782557

ABSTRACT:
The present invention is a process for preparing a polyaminopolymer which contains functionality comprising 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; (c) 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. The invention includes polyaminopolymers so prepared, papers prepared using such polymers, and processes for preparing such papers. The papers so prepared preferably have improved wet strength. The polyaminopolymers are useful when dried and redissolved. Certain of the polyamino-polymers have structures of Formula IV:

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