Method of making thermally regenerable salt sorbent resins

Details Method of making thermally regenerable salt sorbent resins Method of making thermally regenerable salt sorbent resins

2007-11-13

2007-11-13

Seidleck, James J. (Department: 1711)

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

Synthetic resins

Ion-exchange polymer or process of preparing

C521S031000, C521S038000, C521S053000, C521S131000, C521S140000, C525S083000, C525S085000, C525S332200

Reexamination Certificate

active

11094089

ABSTRACT:
A heterogenous hybrid thermally regenerable salt sorbent resin is formed from a hybrid precursor resin. The hybrid precursor resin is formed by intimately mixing a dry, solid crosslinked macroporous copolymer with a solution containing a polyunsaturated monomer, a monoethylenically unsaturated monomer containing a haloalkyl group and a polymerization initiator, followed by heating to cause polymerization. The hybrid precursor resin is then treated with a weak base, then subjected to hydrolysis conditions to form, respectively, weak base groups and weak acid groups to produce the hybrid thermally regenerable salt sorbent resin.

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Hsu, Tah-Ben et al., “Salt Removal from Water by Continuous Ion Exchange Using Thermal Regeneration”,Ind. Eng. Chem. Res., 1989, 28, 1345-1351.
Rice, Richard G., “Continuous Desalination Using Cyclic Mass Transfer on Bifunctional Resins”,Ind. Eng. Chem. Fundam., 1981, 20, 150-155.

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