摘要:
A photocurable resin composition is provided that exhibits an excellent storage stability, that can be easily cured by ultraviolet radiation, and that cures to form a cured film that exhibits an excellent ultraviolet absorbing performance at around the 300 nm wavelength, an excellent physical strength, an excellent stain resistance, an excellent film uniformity, and an excellent adherence by the film. This photocurable resin composition comprises the following components (A) to (E): (A) 100 weight parts of a multifunctional acrylate or a multifunctional methacrylate, (B) 1 to 100 weight parts of an aliphatically unsaturated bond-containing organoalkoxysilane, (C) 1 to 300 weight parts colloidal silica, (D) 0.01 to 20 weight parts of an ultraviolet absorber that has an absorption wavelength at 220 to 400 nm, and (E) 0.01 to 30 weight parts of a photopolymerization initiator that has an absorption wavelength at 300 to 450 nm.
摘要:
The method for producing polyorganosiloxane from at least one type of organosilicon compound having a siloxane unit or alkoxysilane by the equilibrating reaction involving cleavage and recombination of the silicon-oxygen bond as a method carried out in the presence of an acidic catalyst capable of giving the product in high productivity and yield, corrosive to the system to a limited extent, and remaining in the product to a limited extent or degrading product quality to a limited extent if it remains, wherein a solid, acidic zirconium oxide catalyst is used as the acidic catalyst.
摘要:
To provide a photocurable primer composition that cures to form a primer layer that exhibits an excellent adhesion to substrate, a structure having this primer layer and a method of producing such a structure. A photocurable primer composition comprising (a) multifunctional acrylates, (b) organoalkoxysilane having an aliphatically unsaturated bond, (c) photopolymerization initiator, and (d) organic solvent. Also, a structure comprising a primer layer comprising the aforementioned photocurable primer composition, formed on the substrate, and a cured coating comprising (e) ultraviolet absorber and (c) photopolymerization initiator, formed on the primer layer.
摘要:
The method for producing polyorganosiloxane from at least one type of organosilicon compound having a siloxane unit or alkoxysilane by the equilibrating reaction involving cleavage and recombination of the silicon-oxygen bond as a method carried out in the presence of an acidic catalyst capable of giving the product in high productivity and yield, corrosive to the system to a limited extent, and remaining in the product to a limited extent or degrading product quality to a limited extent if it remains, wherein a solid, acidic zirconium oxide catalyst is used as the acidic catalyst.