USE OF ALCOHOXYLATED NON-IONOGENIC SURFACTANTS AS ADDITIVES IN WATER COMPOSITIONS FOR CLEANING MEMBRANES Russian patent published in 2017 - IPC C11D1/72 C11D1/42 C11D1/44 B08B3/08 

FIELD: chemistry.

SUBSTANCE: aqueous membrane cleaning composition comprising an alkoxylated non-ionogenic surfactant having the following formula is described:

where R is a linear or branched C₈-C₁₈ hydrocarbon chain, X is O or N, R¹, R² and R³ independently of one another are hydrogen, methyl, ethyl, propyl, isopropyl, or a mixture thereof, n is from 1 to 8, m has a value of 1 to 8, p is a value of 0 to 8, where X is O, then w is a number 1, and if X is N, then w is a number 2, a surfactant having an HLBd value of 9 to 12.5, and an average degree of branching BS≥1.5.

EFFECT: effective cleaning in aqueous solutions used for cleaning membranes.

15 cl, 13 dwg, 11 tbl