| 发明名称 |
Elongated microcapsules and their formation |
| 摘要 |
Elongated microcapsules, such as elongated hydrophobic-core and hydrophilic-core microcapsules, may be formed by pulse stirring an emulsion or shearing an emulsion between two surfaces moving at different velocities. The elongated microcapsules may be dispersed in a coating formulation, such as paint. |
| 申请公布号 |
US9108178(B2) |
申请公布日期 |
2015.08.18 |
| 申请号 |
US201213354576 |
申请日期 |
2012.01.20 |
| 申请人 |
The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration |
发明人 |
Calle Luz M.;Li Wenyan N.;Buhrow Jerry W.;Perusich Stephen A.;Jolley Scott T.;Gibson Tracy L.;Williams Martha K. |
| 分类号 |
C09D105/00;B01J13/02;C08L5/00;B05D7/00;B01J13/16;B01J13/14;C23F11/00;C09D7/12 |
主分类号 |
C09D105/00 |
| 代理机构 |
|
代理人 |
Ford Michelle L.;McTavish Hugh |
| 主权项 |
1. A composition comprising capsules having a solid shell and an interior core; wherein at least a portion of the capsules are elongated microcapsules having an aspect ratio greater than 1.3 and wherein the shorter axis is less than 400 microns,
(a) wherein the elongated microcapsules are formed by a process comprising:
forming an emulsion;stirring the emulsion using pulsed stirring; andforming solid shells around droplets in the emulsion to form elongated microcapsules; or (b) wherein the elongated microcapsules are formed by a process comprising:
forming an emulsion;shearing the emulsion between two surfaces moving at different velocities to form a sheared emulsion; andforming solid shells around droplets in the emulsion to form elongated microcapsules. |
| 地址 |
Washington DC US |
