A method for producing a sol-gel ink, in particular from TEOS and MTEOS, is provided. The method includes adding inorganic particles as a filler and adding a high-boiling solvent.

A method for producing a sol-gel ink, in particular from TEOS and MTEOS, is provided. The method includes adding inorganic particles as a filler and adding a high-boiling solvent.

Disclosed is modified hydrogenated polysiloxazane prepared by reacting hydrogenated polysiloxazane with a silane compound selected from polysilane, polycyclosilane, and a silane oligomer. The modified hydrogenated polysiloxazane has a small mole ratio of nitrogen atoms relative to silicon atoms and may remarkably deteriorate a film shrinkage ratio when included in a composition for forming a silica-based insulation layer to form a silica-based insulation layer.

Disclosed is modified hydrogenated polysiloxazane prepared by reacting hydrogenated polysiloxazane with a silane compound selected from polysilane, polycyclosilane, and a silane oligomer. The modified hydrogenated polysiloxazane has a small mole ratio of nitrogen atoms relative to silicon atoms and may remarkably deteriorate a film shrinkage ratio when included in a composition for forming a silica-based insulation layer to form a silica-based insulation layer.

Provided is a composition including colloidal silica particles; and a solvent, in which a viscosity at 25 C. is 4 mPa.Math.s or lower. The colloidal silica particles are a composition in which a plurality of spherical silica particles are linked in a beaded shape or a composition in which a plurality of spherical silica particles are linked in a planar shape. The solvent includes a solvent A1 having a boiling point of 190 C. to 280 C. Provided is also a film forming method using the above-described composition.

Provided is a composition including colloidal silica particles; and a solvent, in which a viscosity at 25 C. is 4 mPa.Math.s or lower. The colloidal silica particles are a composition in which a plurality of spherical silica particles are linked in a beaded shape or a composition in which a plurality of spherical silica particles are linked in a planar shape. The solvent includes a solvent A1 having a boiling point of 190 C. to 280 C. Provided is also a film forming method using the above-described composition.

Curable adhesive films, primers for adhesion of curable adhesive films, and adhesive systems comprising adhesive films and primers are provided. In some embodiments, an adhesive system comprises: I) a curable adhesive free-standing film comprising a blend of: a) a first film-forming polymer or oligomer; b) a first species comprising first unsaturated free-radically polymerizable groups, which may be a) or a species other than a); and c) a first transition metal cation; and II) a primer for adhesion of a curable adhesive free-standing film to a first substrate comprising an oxidizing agent. In some embodiments, an adhesive system comprises: I) a curable adhesive free-standing film comprising an outer surface bearing embossed air bleed channels capable of aiding in escape of air during application of the outer surface to a primed substrate; and II) a primer comprising components that initiate cure of the curable adhesive free-standing film.

Curable adhesive films, primers for adhesion of curable adhesive films, and adhesive systems comprising adhesive films and primers are provided. In some embodiments, an adhesive system comprises: I) a curable adhesive free-standing film comprising a blend of: a) a first film-forming polymer or oligomer; b) a first species comprising first unsaturated free-radically polymerizable groups, which may be a) or a species other than a); and c) a first transition metal cation; and II) a primer for adhesion of a curable adhesive free-standing film to a first substrate comprising an oxidizing agent. In some embodiments, an adhesive system comprises: I) a curable adhesive free-standing film comprising an outer surface bearing embossed air bleed channels capable of aiding in escape of air during application of the outer surface to a primed substrate; and II) a primer comprising components that initiate cure of the curable adhesive free-standing film.

A method for producing an aqueous composition comprising a condensate based on silicon compounds, involving the steps of i) introducing at least one polymeric rheology control agent into water; ii) adding at least one acidic catalyst; iii) adding at least one silicon compound of general formula (I) RnSiX4-n in which the radicals X are the same or different and stand for hydrolysable groups or hydroxyl groups, the radicals R are the same or different and stand for non-hydrolysable groups, and n is 0, 1, 2, or 3; and iv) performing a hydrolysis reaction of at least part of the silicon compounds of general formula (I) added in step iii). The present invention further relates to a composition that can be obtained by means of the method according to the invention.

A method for producing an aqueous composition comprising a condensate based on silicon compounds, involving the steps of i) introducing at least one polymeric rheology control agent into water; ii) adding at least one acidic catalyst; iii) adding at least one silicon compound of general formula (I) RnSiX4-n in which the radicals X are the same or different and stand for hydrolysable groups or hydroxyl groups, the radicals R are the same or different and stand for non-hydrolysable groups, and n is 0, 1, 2, or 3; and iv) performing a hydrolysis reaction of at least part of the silicon compounds of general formula (I) added in step iii). The present invention further relates to a composition that can be obtained by means of the method according to the invention.