| abstract |
The present invention provides a particle surface hydrophobization technique that can be applied to particles composed of a wide range of materials such as inorganic particles, organic particles, and inorganic-organic composite particles without requiring a high-temperature reaction or an organic solvent. In a hydrophobizing method for hydrophobizing a particle surface having a hydrophilic group in an aqueous medium with a hydrophobizing agent, the hydrophilic group on the particle surface is hydrophobized in the presence of a phase transfer catalyst. React with agent. [Selection figure] None |