Lg Chem, Ltd

Youngju Lee

Chong Kyu Shin

Eunkyoung Byun

Hyungjoon Jeon

Byungho Jeon

Lakwon Choi

Phill Lee

Byoungsoo Lee

Taehyeong Kim

Bong Ju Kwak

Young Jun Shin

Young Jun Shi

Provided is a composition for interfacially polymerizing polyamide including an amine compound and a chain-type-structured additive containing one or more amino groups and two or more hydroxyl groups, and a method for manufacturing a water treatment separation membrane, and a water treatment separation membrane using the same.

Composition for polyamide interfacial polymerization, and method for manufacturing water treatment separation membrane by using same

Provided is a composition for interfacial polymerizing polyamide including an amine compound; and one or more types of compounds selected from among a purine-based compound and a pyrimidine-based compound of Chemical Formula 1:

Composition for interfacial polymerization of polyamide and manufacturing method for water treatment separation membrane using same

Provided is a water-treatment membrane including a porous support; and a polyamide active layer including chlorine on a surface thereof, wherein CIE L*a*b* color coordinate values after storing for 30 days or longer at 25&#xb0; C. to 80&#xb0; C. satisfy Equation 1 to Equation 3:91&#x3c;*&#x3c;97&#x2003;&#x2003;&#x3c;Equation 1&#x3e;&#x2212;1.5&#x3c;*&#x3c;1.5&#x2003;&#x2003;&#x3c;Equation 2&#x3e;&#x2212;1.5&#x3c;*&#x3c;8&#x2003;&#x2003;&#x3c;Equation 3&#x3e; of the present disclosure, a water-treatment module including the same, and a method for manufacturing the same.

Water treatment separation membrane, water treatment module comprising same, and manufacturing method therefor

Provided is a water treatment membrane including: a porous support; and a polyamide active layer provided on the porous support, in which the polyamide active layer includes one or more units selected from among a unit of Chemical Formula 1: a unit of Chemical Formula 2; a unit of Chemical Formula 3; and a unit of Chemical Formula 4; and a manufacturing method thereof.

Water treatment membrane and method for manufacturing same

The present specification provides a method for manufacturing a water-treatment separation membrane, the method comprising: preparing a porous support; forming a polyamide active layer on the porous support by using an interfacial polymerization of an aqueous solution comprising an amine compound and an organic solution comprising an acyl halide compound; and coating a coating solution comprising a random copolymer comprising the monomers represented by Chemical Formulae 1 to 3 onto the polyamide active layer, in which a content of the random copolymer is 0.5 wt % to 2 wt % based on a total weight of the coating solution, a water-treatment separation membrane manufactured by using the same, and a water treatment module comprising the water-treatment separation membrane.

Method for manufacturing water treatment separator, water treatment separator manufactured using same, and water treatment module comprising water treatment separator

The present invention relates to a dry water treatment membrane having moisture content of 1% to 10%, and a method for manufacturing the same.

High-functional polyamide-based dry water treatment separator and method for manufacturing same

The present invention relates to a water treatment separation membrane having improved durability and including a porous support; a polyamide active layer formed on the porous support; and a protective layer formed on the polyamide active layer and including polyvinyl pyrrolidone, wherein a thickness of the protective layer is 0.5 nm to 1000 nm, and a method for manufacturing the same.

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Daejeon, South Korea

Youngju Lee