Patent ID: 8318117

Claim:
An absorption medium for acid gases comprising (A) an oligoamine of the general formula (I) where R 1 is C 1 to C 3 alkyl, R 2 is hydrogen or C 1 to C 3 alkyl, n is 2 to 6, and p is 1 to 3; and (B) a primary or secondary alkanolamine of the general formula (II) where R a is hydrogen, C 1 to C 3 alkyl, —CH 2 CH 2 OH or —(CH 2 ) m NH 2 where m is 1 to 3, R b is hydrogen or C 1 to C 3 alkyl, R c is hydrogen or C 1 to C 3 alkyl, and R d is hydrogen, C 1 to C 3 alkyl, —CH 2 OH or —CH 2 NH 2 , wherein the weight ratio of oligoamine (A) to the primary or secondary alkanolamine (B) m [oligoamine (A)]/ m [alkanolamine (B)] is 0.2 to 2.