Process for recycling aqueous fluid absorbents fines to a...

Details Process for recycling aqueous fluid absorbents fines to a... Process for recycling aqueous fluid absorbents fines to a...

B - Operations, Transporting

01

J

B01J 20/26 (2006.01) A61L 15/60 (2006.01) B01J 20/30 (2006.01) C08F 265/00 (2006.01)

Patent

CA 2068859

ABSTRACT A process is described for recycling dry aqueous fluid absorbent polymer fines into a process that includes a polymerization step for making the aqueous fluid absorbent polymer. The process requires recovering the dry polymer fines, mixing the fines with a polymerizable monomer solution for making the aqueous fluid absorbent polymer and polymerizing the mixture of fines and monomer to form the aqueous fluid absorbent polymer. In the process the fines are incorporated into the new polymer gel and becomes indistinguishable therefrom. The gel may then comminuted into a particulate dried and then separated into a portion having a desired minimum particle size in a fines portion having less than the desired size. The fines portion is then recycled up to about 30 percent by weight based on gel solids may be recycled for the 38,9992-F preferred polyacrylate based aqueous fluid absorbent polymer. 38,992-F

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