Process for preparing particles of high water-absorbent resin

Details Process for preparing particles of high water-absorbent resin Process for preparing particles of high water-absorbent resin

1990-04-26

1992-03-17

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524322, 524916, 528490, 528491, C08J 320, C08K 509, C08F 600

Patent

active

050969447

ABSTRACT:
A process for preparing particles of a high water-absorbent resin which comprises mixing a powder of a high water-absorbent resin with a solution of a sorbitan surfactant having an HLB of 2.1 to 5.0 dissolved in an organic solvent, volatilizing the organic solvent from the mixture to give a resin powder with a content of the organic solvent of not more than 5% by weight, adding water to the mixture to adjust a water content in the resin powder to 25 to 60% by weight, adding an inorganic powder to the resin powder, and drying the resulting mixture. The particles of the high water-absorbent resin obtained according to the present invention are suitable for use of sanitary goods, water-retaining agents or soil conditioner in the fields of agriculture and horgiculture and other various uses.

REFERENCES:
patent: 4668715 (1987-05-01), Phillips
patent: 4732968 (1988-03-01), Obayashi et al.

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