Epg Engineered Nanoproducts Germany Ag

Koito Manufacturing Company, Ltd.

Carsten Schmidt

Helmut Schmidt

Daisuke Mochizuki

Ertugrul Arpac

Kazuhito Osada

Christian Schmidt

Thomas Dembski

Savas Guven

Savas Güven

Daisuke c/o Koito Manufacturing Co Ltd Mochizuki

Kazuhito c/o Koito Manufacturing Co Ltd Osada

Metallic substrates with a vitreous or glass-ceramic pigmented protective layer are obtainable by applying an alkali metal silicate-containing coating sol to the substrate or a surface thereof and thermally densifying the layer thus obtained, said alkali metal silicate-containing coating sol comprising an oxidic pigment of at least one element selected from the third and fourth main or subgroups of the Periodic Table of the chemical elements and the transition metals Fe, Co, Ni, Cu, Zn, Nb and Ta.

Metallic articles having vitreous or glass-ceramic pigmented protective layers having a high chemical resistance

The invention relates to articles comprising a metal surface provided with a glass-, glass-ceramic- or ceramic-type protective layer, characterized in that the protective layer comprises a base layer comprising a matrix made of an alkali and/or alkaline earth silicate and an alkali metal- and alkaline earth metal-free top layer comprising a matrix made of an oxidic silicon compound, and to a method for the manufacture of said articles. The articles comprising the protective layer exhibit high chemical resistance and improved non-stick properties. They are characterized in particular by high dishwasher resistance.

Metal surfaces compromising a thin glass- or ceramic type protective layer having high chemical resistance and improved non-stick properties

Disclosed is a process of preparing a moulded article, comprising 1) hydrolyzing a) at least one silane having one non-hydrolysable organic group, and b) at least one compound selected from b1) a silane having two non-hydrolysable organic groups, and b2) a hydrolysable polysiloxane, or a mixture thereof, and c) optionally at least one silane having no non-hydrolysable organic group, to prepare a composite composition comprising a hydrolysate or condensate, 2) placing the composite composition in a mould, 3) curing the composite composition to increase the degree of condensation, 4) removing the moulded article from the mould, and 5) heat treating the moulded article at a temperature of at least 100&#xb0; C. The moulded article is preferably an optical lens which may be used for automobile headlights.

Siloxane composite-based light-weight optical lenses

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Saarbruecken, Germany

Carsten Schmidt