The weak anion exchange resin is divided into macroporous type and gel type, and the skeleton is divided into styrene and acrylic acid system. The strong anion exchange resinis also divided into macroporous type and gel type, and the skeleton is also divided into styrene and acrylic acid systems. Styrene resin belongs to rigid sphere, while acrylic resin sphere has better toughness.

Ion exchange resin, as a special macromolecule compound with selective adsorption and exchange functions, has played an important role in industry, agriculture, processing and manufacturing industries. It can be predicted that ion exchange resins will play a more important role in the future with the continuous development of various industries and the progress of science and technology.

In the late 1980s, Europe and America took the lead in the industrialized production of polypeptide raw materials based on solid-phase synthesis technology.

At present, the raw excipients used in the production of solid phase peptide synthesis raw materials are mostly produced in China. The whole East Asia region is also the main region of raw excipients supply for solid-phase synthetic polypeptide raw materials in the world. When choosing raw materials and accessories, we should consider the quality, price, process matching and other aspects. The extreme value of a single parameter is often confirmed to be not the optimal choice.

Compared with small molecule chelating agents, chelating resins have the advantages of simple synthesis, low cost, large adsorption capacity, easy elution, less interference, good mechanical properties and it is extremely stable for acids, bases and various solvents. Compared with ion exchange resins, chelating resins have stronger binding ability and higher selectivity to metal ions. When chelating resins chelate with specific metal ions, there will be many special physical and chemical properties, which are widely known as catalysts, photosensitive materials and antistatic agents.

Chelating resins are widely used in hydrometallurgy, analytical chemistry, marine chemistry, pharmaceuticals, environmental protection, geochemistry, radiochemistry and catalysis. In addition to being a metal ion chelating agent, it can also be used as a catalyst for oxidation, reduction, hydrolysis, olefin addition polymerization, oxidative coupling polymerization, and for the resolution of racemates of amino acids and peptides.

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New production unit inaugurated in Gaoling, Xi'an, Shaanxi province Annual capacity increased by 20.000 tons for specialty Ion Exchange Resins and Adsorbers Strong demand in Industrial and Drinking water, Electronic, Food transformation as well as specialty areas.