What is provided is a method for producing a composite-particle composition including a first step of obtaining a dispersion liquid of fine fibers; a second step of coating a surface of liquid droplets of a polymerizable monomer or a polymer with the fine fibers in the dispersion liquid to stabilize the liquid droplets as an emulsion; a third step of polymerizing the liquid droplets of the polymerizable monomer or the polymer to obtain composite particles including the polymer coated with the fine fibers; and a fourth step of adsorbing a compound that forms an ionic bond in a pair with an ionic functional group of the fine fibers onto the fine fibers in the surface of the composite particles.

A polymer comprising one or more chalcogenide elements and one or more crosslinking moieties. The crosslinking moieties may be organic, inorganic, or both. Also disclosed is the related method for making a polymer comprising purifying a chalcogenide polymer powder comprising one or more chalcogenide elements, melting the purified chalcogenide polymer powder, adding one or more crosslinking moieties to the melted chalcogenide polymer, and curing the modified chalcogenide polymer at a temperature between 150 and 200 C.

A polymer comprising one or more chalcogenide elements and one or more crosslinking moieties. The crosslinking moieties may be organic, inorganic, or both. Also disclosed is the related method for making a polymer comprising purifying a chalcogenide polymer powder comprising one or more chalcogenide elements, melting the purified chalcogenide polymer powder, adding one or more crosslinking moieties to the melted chalcogenide polymer, and curing the modified chalcogenide polymer at a temperature between 150 and 200 C.

The present invention relates to an insoluble support comprising distal binding sites, the support comprising a homogeneous polymeric matrix and constructs, the constructs covalently bound to the polymeric matrix, wherein the constructs comprise at least one branching agent selected from aminoalkanoic acids comprising at least 2 amino groups and from 3 up to 10 carbon atoms, cleavable linkers and at least one spacer coupled to at least one branching agent via an amide bond, the cleavable linkers providing the distal binding sites.

The present invention relates to an insoluble support comprising distal binding sites, the support comprising a homogeneous polymeric matrix and constructs, the constructs covalently bound to the polymeric matrix, wherein the constructs comprise at least one branching agent selected from aminoalkanoic acids comprising at least 2 amino groups and from 3 up to 10 carbon atoms, cleavable linkers and at least one spacer coupled to at least one branching agent via an amide bond, the cleavable linkers providing the distal binding sites.

A method of preparing a branched polymer comprises the free radical polymerisation of a multivinyl monomer in the presence of a chain transfer agent, using a source of radicals, wherein the extent of propagation is controlled relative to the extent of chain transfer to prevent gelation of the polymer. The average length of each vinyl polymer chain within the product is short.

A method of preparing a branched polymer comprises the free radical polymerisation of a multivinyl monomer in the presence of a chain transfer agent, using a source of radicals, wherein the extent of propagation is controlled relative to the extent of chain transfer to prevent gelation of the polymer. The average length of each vinyl polymer chain within the product is short.

A method of preparing a branched polymer comprises the free radical polymerisation of a multivinyl monomer in the presence of a chain transfer agent, using a source of radicals, wherein the extent of propagation is controlled relative to the extent of chain transfer to prevent gelation of the polymer. The average length of each vinyl polymer chain within the product is short.

The present invention provides: hollow particles which enable a lower dielectric constant and a lower dielectric loss tangent of a resin composition and a production method therefor. The hollow particles of the present invention have a shell portion formed by a polymer of a monomer component including a divinyl aromatic compound and a monovinyl aromatic compound and a hollow portion surrounded by the shell portion, in which a dielectric loss tangent measured by cavity resonance method (frequency: 10 GHz (room temperature)) is 1.0010.sup.3 or less. The hollow particles can be produced by mixing the monomer component and a predetermined hydrophobic solvent, by further mixing water, by polymerizing the monomer component in an emulsion liquid obtained, and by washing a resulting polymer with water and an organic solvent.

The present invention provides: hollow particles which enable a lower dielectric constant and a lower dielectric loss tangent of a resin composition and a production method therefor. The hollow particles of the present invention have a shell portion formed by a polymer of a monomer component including a divinyl aromatic compound and a monovinyl aromatic compound and a hollow portion surrounded by the shell portion, in which a dielectric loss tangent measured by cavity resonance method (frequency: 10 GHz (room temperature)) is 1.0010.sup.3 or less. The hollow particles can be produced by mixing the monomer component and a predetermined hydrophobic solvent, by further mixing water, by polymerizing the monomer component in an emulsion liquid obtained, and by washing a resulting polymer with water and an organic solvent.