Solutions of acrylamidoalkanesulfonic acid salts in organic...

Details Solutions of acrylamidoalkanesulfonic acid salts in organic... Solutions of acrylamidoalkanesulfonic acid salts in organic...

C - Chemistry, Metallurgy

08

K

260/500.1, 260/5

C08K 5/42 (2006.01) C08F 220/46 (2006.01) C08F 20/54 (2006.01)

Patent

CA 1103698

Abstract of the Disclosure: Solutions of salts, especially sodium salts, of acrylamidoalkanesulfonic acids in organic liquids such as dimethylformamide are prepared by reacting the acid with a metal salt of a weak acid (preferably a metal carbonate or bicarbonate), or a cation exchange resin in the metal salt form, in the organic liquid in the presence of a free radical polymerization inhibitor (preferably an oxygen-containing gas such as air with which the mixture is blown) until the neutralization number of the mixture to phenolphthalein is a base number or, if an acid number, is no higher than about 1Ø In a preferred embodiment of the process, the mixture is blown with air and such blowing is continued until the acid number of the system is no greater than about 1.0, after which a strongly alkaline reagent is added until the neutralization number is a base number or an acid number no higher than about 0.1.

306698

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