US11583787 - Demulsifiers and a method of using demulsifiers for breaking emulsions of water and crude oil

Oliveira Filho, Antonio Pedro de (The Woodlands, TX, US); Tooge, Carlos Augusto Blasques (Sao Paulo, BR); Nogueira, Thiago (Lagoa, BR)

This invention provides a concentrated demulsifier composition comprising A) at least 50 wt.-% of a demulsifier, selected from the group consisting of a polymeric nonionic oil-soluble demulsifier for mineral oils, and an alkyl aryl sulphonic acid or its salt, and mixtures thereof, B) 0.1 to 20 wt.-% of a surfactant selected form anionic, cationic, zwitterionic and nonionic surfactants, the surfactant being different from the demulsifier, C) less than 20 wt.-% of a water-immiscible organic solvent, D) 3 to 49 wt.-% of a water-miscible organic solvent and E) 0 to 5 wt.-% of water.

15/03/2023

freepatentsonline

Thông tin chuyên ngành tháng 03/2023