Method of producing hydrophilic resin

Details Method of producing hydrophilic resin Method of producing hydrophilic resin

1998-12-18

2000-10-31

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C08J 300

Patent

active

061403954

ABSTRACT:
A method of producing hydrophilic resin by pulverizing and drying a hydrogel polymer, in which, during pulverization of the hydrogel polymer, the hydrogel polymer is sheared between two spiral rotary blades with different respective feed rates, provided opposite one another. Due to the difference in feed rates of the two rotary blades, one rotary blade overtakes the other, and the hydrogel polymer is caught therebetween and sheared. It is preferable if the temperature of the hydrogel polymer at this time is no less than 40.degree. C.

REFERENCES:
patent: 3905122 (1975-09-01), Oshima
patent: 4690788 (1987-09-01), Yada et al.
patent: 5064582 (1991-11-01), Sutton
patent: 5250640 (1993-10-01), Irie

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