Patent ID: 8518868

Claim:
Gemini surfactants bis-N-alkyl polyether, bis-N-alkenyl polyether, bis-N-cycloalkyl polyether, bis-N-aryl polyether bis-beta or alpha-amino acids or their salts having the formula: where: R 1 is independently a radical represented by —H or —CH 3 , R 2 is an alkyl, alkenyl chain, cycloalkyl or aryl; R 3 is a radical represented by —H, —CH 3 , —CH═CH—CH 3 , or —COOX; R 4 is a radical represented by —H, —CH 3 , or —CH 2 —COOX; R 5 is a radical represented by —H, an alkyl, alkenyl, cycloalkyl, aryl group, or a metal; R 6 is a radical represented by an alkyl, alkenyl, cycloalkyl, or aryl group; n and m can have values from 1 to 250, and i can have values of 0 and 1: when i=1: R 3 is a radical represented by —H, —CH 3 , —CH═CH—CH 3 , or —COOX, and when i is equal to 0: R 3 is a radical represented by —COOX; In the radical —COOX used in R 3 and R 4 , X is represented by: —H, an alkyl, alkenyl group, a cycloalkyl or aryl group, or a metal.