FIELD: technological processes.
SUBSTANCE: invention relates to a process for producing surface-postcrosslinked water-absorbent polymer particles. Disclosed is a method of producing surface-postcrosslinked water-absorbent polymer particles by forming water-absorbent polymer particles, having a residual monomer content in the range of 0.1 to 15 % by weight, coating said particles with at least one surface postcrosslinker and performing thermal surface-postcrosslinking at a temperature in the range from 100 to 170 °C.
EFFECT: technical result is obtained polymer particles obtained by the claimed method have improved characteristics – high retention capacity in a centrifuge and high absorption under load.
31 cl, 16 dwg, 35 ex, 13 tbl
| Title | Year | Author | Number |
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|
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RU2364513C1 |
