Hyundai Motor Company

Kia Motors Corporation

Yonsei University

Namyang Ind. Co., Ltd

Jung-Woo Park

Tae Young Kim

Joon Mo Park

Hyo-Seon Kim

Sung-Jong Hong

Kwang Mo Koo

Sang-Gyu Yoon

Jin-Ho Bae

Chul-Ho Jun

A steering system of an automobile may include a mounting bracket having a flange portion supporting a steering column and contacting with an automobile body, and an opening hole formed at the flange portion and opening toward one side of the flange portion, a capsule slidably coupled to the opening hole and adapted to be decoupled from the opening hole when an impact is given thereto, and at least one molded supporter fixing the capsule and the flange portion and adapted to be sheared off from the capsule or the flange portion when the impact is given thereto.

Steering system of automobile

Disclosed are a protected alcohol or derivative thereof, a surface-modified organic-inorganic hybrid glass, and preparation methods thereof. More specifically, disclosed are a protected alcohol or derivative thereof and a surface-modified organic-inorganic hybrid glass, which are prepared by allowing a silane compound, having vinyl or a vinyl derivative, to react with an alcohol or derivative thereof or with an organic-inorganic hybrid glass, in the presence of an acid catalyst, a transition metal catalyst and an organic solvent, so as to introduce an organic group thereto even at room temperature, as well as preparation methods thereof. The disclosed invention allows a functional group to be effectively introduced into alcohol or a derivative thereof or into an organic-inorganic hybrid glass, not only high temperatures but also room temperature, and thus is highly effective in introducing compounds having a thermally sensitive functional group, for example, natural compounds or proteins. Also, the invention makes it possible to introduce various organic groups and to separate and purify organic macromolecule-bonded organosilane compounds using a silica gel column so as to effectively introduce large organic functional groups to inorganic materials. Accordingly, the invention is highly useful in the chemical industry.

Surface modified organic inorganic hybrid glass, protecting group induced alcohol or its derivative and producing method thereof

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Busan, South Korea

Jung-Woo Park