Method for producing hollow particles and hollow particles

Abstract

A method for producing hollow particles which comprise a shell and a hollow portion surrounded by the shell and which have a void ratio of 50% or more, the method comprising: preparing a mixture liquid containing a polymerizable monomer, a hydrophobic solvent, a polymerization initiator, a dispersion stabilizer and an aqueous medium, suspending the mixture liquid to prepare a suspension in which droplets or a monomer composition containing the polymerizable monomer, the hydrophobic solvent and the polymerization initiator are dispersed in the aqueous medium, and subjecting the suspension to a polymerization reaction to prepare a precursor composition containing precursor particles which have a hollow portion surrounded by a shell containing a resin and which include the hydrophobic solvent in the hollow portion, wherein the polymerizable monomer contains a crosslinkable monomer, and wherein an HOP distance between the crosslinkable monomer and the hydrophobic solvent is 5.80 to 6.50.

Dependencies are inferred from the claim text.