Hollow particles
AssigneeZeon Corporation
InventorHisashi Kurokawa
Life of this patent
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Abstract
To provide hollow particles excellent in performance stability in a high-humidity environment and low in relative permittivity. Hollow particles which comprise a shell containing a resin and a hollow portion surrounded by the shell, wherein the shell contains, as the resin, a polymer in which from 70 parts by mass to 100 parts by mass of a crosslinkable monomer unit is contained in 100 parts by mass of all monomer units; wherein a void ratio is 60% or more; wherein a content of a surfactant present on a surface of the hollow particles is 200 ppm or less; and wherein a relative permittivity at a frequency of 1 MHz is 1.6 or less.
Claims4
Hollow particles which comprise a shell containing a resin and a hollow portion surrounded by the shell,
- wherein the shell contains, as the resin, a polymer in which from 70 parts by mass to 100 parts by mass of a crosslinkable monomer unit is contained in 100 parts by mass of all monomer units;
- wherein a void ratio is 60% or more;
- wherein a content of a surfactant present on a surface of the hollow particles is 200 ppm or less;
- and
- wherein a relative permittivity at a frequency of 1 MHz is 1.6 or less.
Dependencies are inferred from the claim text.