A curable composition is provided that includes an alkenyl phenol A, an epoxy-modified silicone B, an epoxy compound C other than the epoxy-modified silicone B, and a thermosetting resin E, in which the thermosetting resin E contains one or more selected from the group consisting of a maleimide compound, a cyanate ester compound, a phenolic compound, an alkenyl-substituted nadimide compound, and an epoxy compound.

Stable preparations of composite particles based on organic polymer and inorganic particles contain, as the organic polymer, an addition polymer containing moieties derived from polymerization of an unsaturated carboxylic acid in addition to vinyl ester, (meth)acrylic ester, olefin, vinyl aromatic, and/or vinyl halide monomers.

Provided is a polyorganosilsesquioxane that is suitable as a material for a hard coat film or an adhesive, the polyorganosilsesquioxane being capable of forming a cured product having a high surface hardness and flexibility while having a high heat resistance or the like. The polyorganosilsesquioxane contains a cage-type silsesquioxane represented by Compositional Formula (1). When the polyorganosilsesquioxane is analyzed using a liquid chromatography-evaporative light scattering detector, a peak area % of the cage-type silsesquioxane represented by Compositional Formula (1) is 5% or greater with respect to a peak area of all components detected.

[R.sup.1SiO.sub.3/2].sub.8[R.sup.1SiO.sub.2/2(OR.sup.c)].sub.1  Formula (1)

A polysiloxane that has a fast polymerization reaction rate and good storage stability is provided. Alternatively, a silicon-containing monomer mixture as a raw material of the polysiloxane, a resin composition, a photosensitive resin composition, a cured film, or a patterned cured film containing the polysiloxane are provided. Alternatively, the present invention provides a production method for a resin composition, a photosensitive resin composition, a cured film, or a patterned cured film containing the polysiloxane. A mixture is provided including a first monomer containing silicon represented by the following general formula (X); and a second monomer containing silicon represented by the following general formula (Y). In the case where A is set to a contained amount of the first monomer containing silicon and B is set to a contained amount of the second monomer containing silicon, the following relationship is satisfied.

[00001]$\text{B}/\left(\text{A + B}\right)\text{>}\text{0}\text{.04}$

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Upcycling process for producing acidic, end-equilibrated siloxanes bearing acetoxy groups and having chain lengths of greater than 3 silicon atoms from end-of-life silicones by thermal digestion in an acidic reaction medium comprising acetic anhydride, acetic acid and at least one further Brønsted acid having a pKa of <4, the digestion taking place in a reactor having a volume of at least 1 liter.

A silicone emulsion composition capable of being formed into a coating film, which contains: (A) 100 parts by mass of an organopolysiloxane containing, per molecule, at least two groups each capable of binding to a silicon atom, wherein the at least two groups are independently selected from a hydroxyl group and an alkoxy group; (B) 0.1 to 50 parts by mass of a surfactant; (C) 0.01 to 10 parts by mass of at least one substance selected from cellulose and a cellulose derivative; (D) 0.5 to 50 parts by mass of colloidal silica; and (E) 50 to 1,000 parts by mass of water.

A sol composition for aerogel formation including a hydrolysis product of a polysiloxane compound.

Composition of comprising nano metal oxide/hydroxide particles and a polyorganosiloxane having increased refractive index, processes to cure these compositions for making transparent coats, shaped articles by an extrusion or molding process having a refractive index above the refractive index of the polyorganosiloxane. Use of the cured polyorganosiloxane compositions as optical devices, coats, lenses or light guides.

Compositions are provided including a chemical blowing agent, a silicone component including an average of more than one free-radically reactive group, and a free-radical initiator. Foam compositions are also provided including a foamed silicone thermoset polymer matrix, fragments of a free-radical initiator, and fragments of a chemical blowing agent. The present disclosure further provides a method of making a foam gasket including dispensing a flowable composition onto a surface of an article and solidifying the flowable composition to form the foam gasket on the surface of the article. The composition includes a chemical blowing agent and a crosslinkable silicone component, and is dispensed at a temperature sufficient to activate the chemical blowing agent. Also, a foam gasket is provided including a foamed silicone thermoplastic polymer matrix and fragments of a chemical blowing agent. An article is additionally provided, including first and second surfaces configured to mate with each other such that when they are mated, the article has a closed clamshell structure. The article further includes a foam gasket disposed on the first surface including a foamed silicone thermoplastic polymer matrix.

Embodiments relate to improving the adhesion between a base substrate and a resilient material layer. Plasma-enhanced chemical vapor deposition (PECVD) is performed to deposit a silicon compound layer on a base substrate. A resilient material layer is formed on the surface of the silicon compound layer. An object formed by the method may include the base substrate, a silicon compound layer on the base substrate, and the resilient material layer on a surface of the silicon compound layer. By having a silicon compound layer with a surface roughness and thickness, adhesion between the base substrate and the resilient material layer can be significantly improved.