Recycling superabsorbent polymer fines

Details Recycling superabsorbent polymer fines Recycling superabsorbent polymer fines

2011-03-22

2011-03-22

Seidleck, James (Department: 1765)

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

Synthetic resins

Treating polymer containing material or treating a solid...

C528S480000, C528S488000, C528S491000, C528S499000, C528S50200C, C521S040000, C521S040500, C521S041000, C521S049500, C525S329500, C525S329700, C525S330300, C604S368000, C162S157200, C162S173000

Reexamination Certificate

active

07910688

ABSTRACT:
A process is described for recycling superabsorbent polymer fines into a process that includes treating the superabsorbent polymer fines with caustic and a polymerization step for making the superabsorbent polymer gel. The process requires treating the superabsorbent polymer fines with a caustic, followed by mixture with polymerizable monomer solution, and polymerizing the mixture of the superabsorbent polymer fines and monomer to form the aqueous fluid absorbent polymer. In the process, the fines are incorporated into the new polymer gel and become indistinguishable there from. The gel may then be 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 particulate may then be coated with a surface crosslinking agent and surface additives and heated for surface conversion.

REFERENCES:
patent: 4591581 (1986-05-01), Crampton et al.
patent: 4657881 (1987-04-01), Crampton et al.
patent: 4950692 (1990-08-01), Lewis et al.
patent: 4970267 (1990-11-01), Bailey et al.
patent: 5064582 (1991-11-01), Sutton et al.
patent: 5342899 (1994-08-01), Graham et al.
patent: 5478879 (1995-12-01), Kajikawa et al.
patent: 5514754 (1996-05-01), Henderson et al.
patent: 5599336 (1997-02-01), Plischke
patent: 6133193 (2000-10-01), Kajikawa et al.
patent: 6441266 (2002-08-01), Dyer et al.
patent: 2007/0167560 (2007-07-01), Smith et al.
patent: 9220723 (1992-11-01), None
patent: 2004018006 (2004-03-01), None
patent: 2006069732 (2006-07-01), None

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