Lg Chem, Ltd

Seung-Pyo Jeong

Chong-Kyu Shin

Phill Lee

Hye-Jin Kwon

Seung-Yup Lee

Young-Ju Lee

Joung-Eun Yoo

Jae-Hong Kim

Young-Hoon Ko

Tae-Hyeong Kim

Joong-Jin Han

A water-treatment separation membrane with good antifouling properties includes a support having pores, a polyamide layer formed on the support, and a passivation layer comprising specific materials formed on the polyamide layer.

Polyamide water-treatment separation membrane with improved antifouling properties and manufacturing method thereof

There are provided a method of manufacturing a reverse osmosis membrane and a reverse osmosis membrane manufactured thereby. The method includes forming a polysulfone layer by applying a solution including a mixed solvent containing two or more solvents having different solubility parameter values to a surface of a porous support; and forming an active layer on the polysulfone layer.

Method of manufacturing reverse osmosis membrane, and reverse osmosis membrane manufactured thereby

There is provided a reverse osmosis membrane including a porous support; a polysulfone layer formed on the porous support and having pores formed in a surface thereof, pores having a diameter of 40 nm or greater accounting for less than 0.5% of total pores; and an active layer.

Reverse osmosis membrane

A reverse osmosis separation membrane includes a porous support, a separation active layer formed on the supporting layer, and a ultra hydrophilic layer formed on the separation active layer. The ultra-hydrophilic layer includes a complex metal oxide including at least one metal element selected from the group consisting of Ti(IV), Zr(IV), Sn(IV) and Al(III), and Si, and an organic compound containing a hydrophilic group making a physical or chemical bond with Ti(IV), Zr(IV), Sn(IV) or Al(III) among the complex metal oxide. A method of manufacturing the reverse osmosis separation membrane also is provided. A reverse osmosis membrane including a single coating layer and having an improved durability, chlorine-resistance and antifouling properties may be provided.

Reverse osmosis membrane including ultra-hydrophilic passivation layer and method of manufacturing the same

A reverse osmosis membrane includes a porous support, a polyamide active layer formed on the porous support, and a coating layer including a copolymer including an amphoteric ionic compound and glycidyl (meth)acrylate. The coating layer makes a chemical bond with the polyamide active layer. A method of manufacturing the reverse osmosis membrane also is disclosed.

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Daejeon, South Korea

Seung-Pyo Jeong