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Domestically used names such as D252, D208, D231, 763, Ⅱ type porous resin, etc.
[Structural formula]
[Physical and chemical properties] This product is milky white to light yellow, opaque spherical particles, and belongs to macroporous ion exchange resin
[Preparation]
① Preparation of macroporous styrene and divinylbenzene copolymer beads.
②The chloromethylation of macroporous styrene and divinylbenzene copolymer beads reacts with chloromethyl ether under the action of Fu's catalyst to carry out the chloromethylation reaction.
③The amination of macroporous styrene and divinylbenzene copolymer beads will be washed with the alcohol-benzene mixture, and then filtered by suction.
The specific process flow is shown in Figure 9-7
Figure 9-7 Preparation process of D202 macroporous strongly basic quaternary ammonium type II styrene-based anion exchange resin
[Technical index] SH2605.
[Application] Mainly used for the preparation of desalinated water, pure water and high-purity water.
Related Links: D201 Macroporous Strong Basic Quaternary Ammonium Type I Styrene Anion Exchange Resin