Patent ID: 7449435

Claim:
A pourable, pumpable, high concentration, aqueous, liquid surfactant composition consisting of: (a) at least one surfactant selected from the group consisting of an amphoteric surfactant, an anionic surfactant, and a combination thereof; (b) a liquid-stabilizing amount of at least one liquid-stabilizing agent; wherein the at least one liquid-stabilizing agent is a compound of the general formula (11), and a salt thereof; wherein E is —SO 3 H, —PO 3 H 2 , —OR 1 , —SR 1 , or C 4 -C 22 alkenyl; R 1 is —(CH 2 ) n —OH, —(CH 2 ) n —SO 3 H, —(CH 2 ) n —PO 3 H 2 , —(CH 2 ) n —COOH, or —CH(R 3 )—COOH; R 3 is —CH 2 OH, —CH(CH 3 )—OH, —CH 2 SH, —CH 2 CONH 2 , —CH 2 CH 2 CONH 2 , —CH 2 COOH, or —CH—CH 2 CH 2 COOH; and m is 1 or 2; (c) optionally an alkali metal halide salt; and (d) water.