Disclosed are silicon and carbon containing film forming compositions comprising a polycarbosilazane polymer or oligomer formulation that consists of silazane-bridged carbosilane monomers, the carbosilane containing at least two —SiH.sub.2— moieties, either as terminal groups (—SiH.sub.3R) or embedded in a carbosilane cyclic compound, wherein R is H, a C.sub.1-C.sub.6 linear, branched, or cyclic alkyl- group, a C.sub.1-C.sub.6 linear, branched, or cyclic alkenyl- group, or combination thereof. Also disclosed are methods of forming a silicon and carbon containing film comprising forming a solution comprising a polycarbosilazane polymer or oligomer formulation and contacting the solution with the substrate via a spin-on coating, spray coating, dip coating, or slit coating technique to form the silicon and carbon containing film.

A method of forming a gap filling on a substrate, the substrate having gaps formed therein, comprises: producing a gap filling polycarbosilazane polymer or oligomer by a polymerization of a reaction mixture of carbosilanes with amines; forming a solution containing the gap filling polycarbosilazane polymer or oligomer; and contacting the solution with the substrate via a spin-on coating, spray coating, dip coating, or slit coating technique to fill the gaps in the substrate forming the silicon and carbon containing gap filling, wherein a concentration of the gap filling polycarbosilazane polymer or oligomer in the solution ranges from 1 to 60 wt %.

A glassy adhesive including a composition containing at least: a polysilazane compound having structures represented by the following formulae (A-1) and (A-2) and not containing a hydrosilyl group; and a curing catalyst, where a mole ratio of the component (A-1) to the component (A-2), which is (A-1):(A-2), is within a range of 3:7 to 7:3, the composition has a non-volatile content of 50 mass % or more, when the composition being heated at 105° C. for 3 hours, and the curing catalyst is at least one selected from the group consisting of an organic acid, a simple substance of a d block element belonging to the fourth period of the periodic table, a platinum group element, and an amphoteric element, and a compound containing the element. This provides an adhesive that is low-cost, has high UV resistance, and in which cracks and so forth do not occur even after a reflow process.

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A process of: providing a polyfunctional compound selected from polyisocyanate, polyacrylate, and polyepoxy; and reacting the polyfunctional compound with a hydroxyl- or amine-terminated silyl-containing compound. The polyfunctional compound and the silyl-containing compound are at least difunctional. A thermoset made by this process.

The present invention is a normal temperature-curable hard coat composition containing at least (A) a polysilazane compound having structures shown by the following formula (1) and (B) an alkoxysilane compound. The ratio of [a] the number of Si—H bonds in the polysilazane compound and [b] the number of alkoxy groups in the alkoxysilane compound is in a range of [b]/[a]=1.5 to 3. The present invention provides the normal temperature-curable hard coat composition which has excellent workability on outdoors, cures at normal temperature, improves surface hardness of plastic materials, and is used as an alternative material to glass. ##STR00001##

Steel sheet coating compositions in which polymeric resin or ceramic properties are produced by admixing an aluminum coordinate complex and an aluminum resin, a polysilazane as a source of silicon, an organic solvent, an organic synthesis catalyst, and optionally a non-metallic, non-ionic, low-nucleophilic base. The admixed coating is applied to sheet steel prior to hot-stamping in order to inhibit surface formation of iron oxides and to improve steel sheet surface characteristics.

Steel sheet coating compositions in which polymeric resin or ceramic properties are produced by admixing an aluminum coordinate complex and an aluminum resin, a polysilazane as a source of silicon, an organic solvent, an organic synthesis catalyst, and optionally a non-metallic, non-ionic, low-nucleophilic base. The admixed coating is applied to sheet steel prior to hot-stamping in order to inhibit surface formation of iron oxides and to improve steel sheet surface characteristics.

The present invention relates to a manufacturing method for a wavelength converting component which is prepared from a dispersion containing a crosslinkable ceramizable polymer material having a silazane repeating unit and at least one wavelength converting material. There are further provided wavelength converting components which can be used for converting blue, violet and/or UV light into light with a longer wavelength. There is also provided a light source and a lighting unit comprising said wavelength converting components.

The present invention relates to a manufacturing method for a wavelength converting component which is prepared from a dispersion containing a crosslinkable ceramizable polymer material having a silazane repeating unit and at least one wavelength converting material. There are further provided wavelength converting components which can be used for converting blue, violet and/or UV light into light with a longer wavelength. There is also provided a light source and a lighting unit comprising said wavelength converting components.

[Problem] To provide a novel polymer, which fills trenches having narrow widths and high aspect ratios and can form a thicker film. [Means for Solution] The block copolymer comprises a linear or cyclic block A having a polysilane skeleton comprising 5 or more silicon and a block B having a polysilazane skeleton comprising 20 or more silicon.