Other Polymers

Polycaprolactone is also called poly ε- Caprolactone, by ε- The ring opening polymerization of caprolactone monomer catalyzed by metal anion complex catalyst can obtain different molecular weights by controlling the polymerization conditions. Its appearance is white solid powder, non-toxic, insoluble in water, easily soluble in a variety of polar organic solvents.

Ion exchange resin used for separation.

PESA is a kind of environmental friendly water-soluble polymer without phosphorus and nitrogen. PESA has good scale inhibition and dispersion performance for calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, calcium fluoride and silicon scale in water, and has good synergistic effect with phosphonate. PESA has good biodegradability and a wide range of applications, especially for cooling water systems under high alkali, high hardness and high pH conditions, and can realize high concentration multiple operation. PESA has good compatibility with chlorine and other chemicals. PESA can be used as nano calcium carbonate dispersant, and can also be used in the processing of papermaking, paint, ink, coating, daily chemical industry and other industries. The addition of PESA improves the fluidity of calcium carbonate suspension, improves the surface properties of calcium carbonate, reduces the surface energy of particles, improves the affinity with the dispersion medium, effectively inhibits the agglomeration between particles, thus increasing its dispersion performance and making it evenly dispersed in the body. In addition, PESA is also widely used in the field of textile printing and dyeing. It can be used in the pretreatment process of dyeing and finishing, which can significantly improve the scouring effect; In the processes of desizing, scouring, bleaching and dyeing, the influence of metal ions such as ca2+, mg2+, cu2+, fe2+ in water on product quality can be reduced; It can protect H2O2 Decomposition and fiber; It can significantly improve whiteness and eliminate macular phenomenon.

Cation exchange resin is an ion exchange resin with acidic groups in its molecules. It can swell in water or polar solvents. The aqueous solution is acidic and can exchange its hydrogen ions or potassium and sodium ions with cations in the solution. According to the ionization constant of acidic active groups, they can be divided into strong acidity, medium acidity and weak acidity. The strong acid cation exchange resin contains sulfonic acid-so3h, and the medium acid cation exchange resin contains phosphoric acid-h2po4 or phosphonic acid-h2po3. Weakly acidic cation exchange resin contains carboxyl COOH or phenolic hydroxyl.