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Osong Medical Innovation Foundation, Korea University Research and Business Foundation

Min Eui Hong

Yang Je Lee

Dek Gin Yang

Sang Jun Sim

Sung Wook Chun

Myong Gun Chong

Byong Ho Lee

Byung Sun Yu

Kyu Hong An

Jae Ok Lim

A method for carbon resource utilization is disclosed. According to one embodiment, the method includes (a) supplying carbon dioxide to a medium to form bicarbonate ions (HCO) (S), (b) inoculating one or more microalgal species into the medium, followed by photo-culture (S), and (c) supplying calcium ions (Ca) to the medium, where the microalgal species are photo-cultured, to produce calcite (CaCO)-containing biomass (S).

Method for carbon resource utilization

Disclosed are a conversion coating composition for use in the surface treatment of a PCB and a conversion coating method using the same. The composition comprises 0.1-30 vol % of sulfuric acid; 0.1-15 vol % of hydrogen peroxide; 0.01-10 wt % of an organic acid; 0.1-30 wt % of a nitrogen compound; 0.01-10 wt % of an organic silicate and/or organic titanate; and 0.1-20 wt % of a film forming auxiliary, 0.1-30 wt % of an etching rate controller, 0.1-20 wt % of a reaction promoter and/or 0.1-20 g/l of a stabilizer. This composition is applied to a PCB at 10-60&deg; C. for 1-10 min. The conversion coating film is superb in adhesive strength, acid resistance, and adhesion and can be formed with ease.

Conversion coating composition based on nitrogen and silicon compounds and conversion coating method using the same

Growing community of inventors

Seongnam-si, South Korea

Min Eui Hong