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Polyvinyl alcohol quaternized product

 Last Update: 2021-10-21
 Source: Internet
 Author: User

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Polyvinyl alcohol quaternized product

[Preparation method] There are two main methods for preparing quaternized polyvinyl alcohol (PVA): The first method is to use polyvinyl alcohol (PVA) that contains a large amount of active hydroxyl groups, which can be esterified with quaternization reagents.

(1) Method one

The required amount of 20% NaOH solution was added to 10.

Finally, the mixture of PVA, NaOH and N-(3-chloro-2-hydroxypropyl)-N,N,N-trimethylammonium chloride, which is still free-flowing, is carried out in a mortar with a porcelain pestle Grind by hand

(2) Method two

In a four-neck flask equipped with a condenser, a dropping funnel, a thermometer and a stirrer, 2500g of vinyl acetate and 4.

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