Urea adsorbent

Details Urea adsorbent Urea adsorbent

1987-03-10

1987-12-29

Foelak, Morton

Liquid purification or separation

Processes

Ion exchange or selective sorption

21050021, 2105021, 521 62, 521 63, 521 64, 521 56, 521 57, 521 59, 428407, B01D 1504

Patent

active

047159618

ABSTRACT:
A urea adsorbent and a method for its production are disclosed, the adsorbent comprising hollow microspheres each having an outer layer formed of a urea-permeable polymer and an inner layer formed of a polymer containing a polyoxyalkylene glycol derivative expressed by the following formula:

REFERENCES:
patent: 3244772 (1966-04-01), von Bonin et al.
patent: 3255127 (1966-06-01), von Bonin et al.
patent: 3442842 (1969-05-01), von Bonin et al.
patent: 4137380 (1979-01-01), Gunning et al.
patent: 4461849 (1984-07-01), Karickhoff

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