# US 5,349,089 A · Reagent for preparing polycationic polysaccharides

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- Number: US 5,349,089 A
- Document ID: US5349089A
- Status: Granted
- Kind: A
- Application number: 08/004,161
- Filed: 1993-01-11
- Granted: 1994-09-20
- Earliest claimed: 1989-07-07
- Assignees: National Starch and Chemical Investment Holding Corporation
- Inventors: Peter T. Trzasko; Michael T. Philbin
- Web page: https://patentgrep.com/patent/US5349089A

## CPC

- D21H 17/24: Polysaccharides
- C08B 11/145: with basic nitrogen, e.g. aminoalkyl ethers
- C08B 31/125: {having a substituent containing at least one nitrogen atom, e.g. cationic starch}
- D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- C08B: POLYSACCHARIDES; DERIVATIVES THEREOF (polysaccharides containing less than six saccharide radicals attached to each other by glycosidic linkages C07H; fermentation or enzyme-using processes C12P19/00; sugar industry C13; production of cellulose D21)

## Abstract

Cationic polysaccharide derivatives are prepared by reacting a polysaccharide with a polycationic reagent having one polysaccharide reactive group and at least two cationic groups. Suitable reagents include polycationic alkyl, aryl, alkaryl, cycloaliphatic, or heterocyclic amines, some of which are novel compositions. The polycationic polysaccharide derivatives prepared from these reagents are useful in the manufacture of paper.

## Claims

### Claim 1

A polycationic, polysaccharide reactive, diamine, 3-[(2-haloethyl)ethylamino]-N,N,N-trimethyl-1-propanaminium salt, having the structure: ##STR17## wherein X is a halogen; and A.sup.- is an anion.