초록 ▼

Use of a mixture of at least one alkanolamide of general formula (I), wherein R is a hydrocarbon group having 7-23 carbon atoms, preferably 11-23 carbons atoms, A is an alkyleneoxy group having 2-4 carbon atoms and n is 2-12, preferably 2-8, and at least one alkoxylated alcohol in a weight ratio bet

Use of a mixture of at least one alkanolamide of general formula (I), wherein R is a hydrocarbon group having 7-23 carbon atoms, preferably 11-23 carbons atoms, A is an alkyleneoxy group having 2-4 carbon atoms and n is 2-12, preferably 2-8, and at least one alkoxylated alcohol in a weight ratio between the alkoxylated alkanolamide and the alkoxylated alcohol from 10:1 to 1:10, preferably in the range from 5:1 to 1:5 for producing a water-base liquid system with reduced flow resistance between the flowing, water-base liquid system and a solid surface.

대표청구항 ▼

[ We claim:] [1.] A method for reducing the flow resistance between a flowing, water-based liquid system and a solid surface which comprises adding to said liquid system at least one alkoxylated alkanolamide of the general formula [ STR 14 ] wherein R is a hydrocarbon group having 7-23 carbon atoms,

[ We claim:] [1.] A method for reducing the flow resistance between a flowing, water-based liquid system and a solid surface which comprises adding to said liquid system at least one alkoxylated alkanolamide of the general formula [ STR 14 ] wherein R is a hydrocarbon group having 7-23 carbon atoms, A is an alkyleneoxy group having 2-4 carbon atoms and n is 2-12, and at least one alkoxylated alcohol of the formula EQU R.sub.1 --(C.sub.r H.sub.2r O).sub.m H (II) re R.sub.1 is a saturated or unsaturated hydrocarbon group containing 8-24 carbon atoms, m is a number from 1 to 12 and r a number from 2 to 4 with the proviso that at least half of the alkyleneoxy units consist of C.sub.2 H.sub.4 O units, in a weight ratio between the alkoxylated alkanolamide and the alkoxylated alcohol from 10:1 to 1:10.