D201 Macroporous Strong Basic Quaternary Ammonium Type I Styrene Anion Exchange Resin

Domestically used names such as DK251, 290, D201/7, D231, 731, etc.

[Structural formula]

[Physical and chemical properties] This product is milky white to light yellow, opaque granular, and belongs to macroporous ion exchange resin

[Preparation]

① Preparation of macroporous styrene and divinylbenzene copolymer beads.

②The chloromethylation and amination of macroporous styrene and divinylbenzene copolymer beads are reacted with chloromethyl ether under the action of Fu's catalyst , and then the chloromethylated beads are reacted with trimethylamine.

The process flow is shown in Figure 9-6

Figure 9-6 Preparation process of D201 macroporous strongly basic quaternary ammonium type I styrene-based anion exchange resin

[Technical Index]

SH2605.

[application]

①It is used to prepare demineralized water and pure water

②It is used for the preparation of high-purity water, especially suitable for high-speed mixed bed condensate treatment equipment