D301 Macroporous Weakly Basic Styrene Anion Exchange Resin

Domestically used names such as D351, D354, D370, porous weak base resin, 750B, 710A, 710B (porogens are divided into A and B), etc.

[Structural formula]

[Physical and chemical properties] This product is light yellow to golden yellow opaque granular, its particle size is 0.

[Preparation]

① Preparation of macroporous styrene and divinylbenzene copolymer beads The preparation of D301 macroporous styrene and divinylbenzene copolymer beads is basically the same as D001 macroporous strong acid cation exchange resin

②Chloromethylation of macroporous styrene and divinylbenzene copolymer beads.

③Amination of macroporous styrene and divinylbenzene copolymer beads Wash the chloromethylated beads with methylal and swell them with double the amount of methylal for 2h

The process flow is shown in Figure 9-8

Figure 9-8 Preparation process of D301 macroporous weakly basic styrene anion exchange resin

[Technical Index] HG/T2165--91

[application]

① Used for desalination and preparation of pure water D301 macroporous weak base anion exchange resin, 001×7 strong acid cation exchange resin, 201×7 strong basic anion exchange resin, combined to form a multiple bed desalting process, desalting or preparing pure water

②It is used to prepare high-purity water D301 macroporous weak base anion exchange resin, 001×7 strong acid cation exchange resin and 201×7 strong basic anion exchange resin to form a multiple bed-mixed bed desalination process to prepare high-purity water

③Used for double bed desalination or preparation of pure water D301 macroporous weak base anion exchange resin and 201×7 strong base anion exchange resin are matched to form a double bed for desalination or preparation of pure water