Abstract: The present invention provides an intermediate film for laminated glass that can increase the heat-insulating properties of laminated glass. The intermediate film for laminated glass according to the present invention is an intermediate film for laminated glass having a one-layer structure or a laminated structure of two or more layers, an intermediate film 1 for laminated glass has a first layer 2 containing silicon dioxide particles 51 having hollow parts and shell parts and having a porosity of 40% or more and 80% or less, when the intermediate film 1 for laminated glass has a one-layer structure, the first layer further contains a thermoplastic resin, and when the intermediate film 1 for laminated glass has a laminated structure of two or more layers, the intermediate film 1 for laminated glass further has a second layer 3 which is arranged on a first surface 2a side of the first layer 2 and which contains a thermoplastic resin.

Abstract: Skeleton nanoparticles and method of forming the same. The skeleton nanoparticles comprise silica shells. Each of the silica shells has a shape of a cubic frame formed of six faces as a whole. The cubic frame is hollow inside and pores are formed between quadrilateral silica frames on respective faces of the cubic frame. The method comprising: coating an organic acid on surfaces of calcium carbonate particles; dispersing the organic acid-coated calcium carbonate particles in an organic solvent that dissolves a part of the organic acid in the organic acid-coated calcium carbonate particles, and further mixing a silicon alkoxide and a base catalyst to form silica-forming particles by forming the silica shell along an edge of the calcium carbonate particles; and dissolving the calcium carbonate at an inside of the silica-forming particles by an acid treatment.

Abstract: To be able to further expand an application field of nanoparticles comprising a silica shell and to make them available for various purposes. Skeleton nanoparticles 1 are nanoparticles that have an outer diameter R ranging from 30 nm to 300 nm and that comprise silica shells 1a. The silica shell 1a has a shape of a cubic frame. The cubic frame is hollow inside and pores are formed between quadrilateral silica frames on respective faces of the cubic frame.