Patent ID: 9517952
Filing Date: 2016-12-13
CPC Classification: B01D,C02F,C08F,C08J,C09D

Claim Text:
1. A method of treating a contaminated water comprising: providing the contaminated water comprising water and oil; providing a membrane comprising a porous substrate and a coating attached to the porous substrate, wherein at least one of the porous substrate or the coating comprises a copolymer comprising 1 to 10 mole % of a structural unit of formula I; and 90 to 99 mole % of a structural unit of formula II, wherein R R either R X is independently at each occurrence an —O— or —NH—; Y is a sulfite group or a carboxylate group; and m and n are independently at each occurrence an integer ranging from 1 to 5; and passing the contaminated water through the membrane to generate a treated water.