基本信息:
- 专利标题： 複合粒子、液体内包粒子形成用複合粒子、及び液体内包粒子、並びに液体内包粒子の製造方法
- 专利标题（英）：COMPOSITE PARTICLE, COMPOSITE PARTICLE FOR FORMING LIQUID-CONTAINING PARTICLE, LIQUID-CONTAINING PARTICLE AND MANUFACTURING METHOD OF LIQUID-CONTAINING PARTICLE
- 申请号：JP2020126993 申请日：2020-07-28
- 公开(公告)号：JP2021023933A 公开(公告)日：2021-02-22
- 发明人： 岩崎 航治
- 申请人： 株式会社リコー
- 申请人地址： 東京都大田区中馬込1丁目3番6号
- 专利权人： 株式会社リコー
- 当前专利权人： 株式会社リコー
- 当前专利权人地址： 東京都大田区中馬込1丁目3番6号
- 代理人： 廣田 浩一
- 优先权： JP2019141316 2019-07-31
- 主分类号： A23L5/00
- IPC分类号： A23L5/00 ; B01J2/00
To provide a composite particle capable of forming a liquid-containing particle excellent in durability while preventing droplets from coalescing, and also to provide a manufacturing method of a liquid-containing particle.SOLUTION: A composite particle includes a hydrophobic solid particle B12 on a surface of a hydrophobic solid particle A11. A contact angle of a hydrophobic solid particle A to water and a contact angle of a hydrophobic solid particle B to water are both 110° to 180°. A ratio (d50a/d50b) of a number average particle diameter of the hydrophobic solid particle A to a number average particle diameter of the hydrophobic solid particle B is 10 to 100, and a coverage factor CR is 50 to 500%. Xa, Xb, Ya, Yb, Za and Zb respectively denote a mass (g) of the hydrophobic solid particle A, a mass of the hydrophobic solid particle B, a density (g/μm3) of the hydrophobic solid particle A, a density of the hydrophobic solid particle B, a cubic volume (μm3) of the hydrophobic solid particle A, and a cubic volume of the hydrophobic solid particle B.SELECTED DRAWING: Figure 1B