| 发明名称 |
Encapsulated Particle |
| 摘要 |
An encapsulated particle includes a core particle and a polyurethane layer. The polyurethane layer is disposed about the core particle and includes the reaction product of an isocyanate and a polyol component. The polyurethane layer is formed in the presence of a silicone surfactant. The polyol component includes a first polyol having a nominal functionality of at least 2.5 and a hydroxyl number of from 20 to 300 mg KOH/g. A method of encapsulating the core particle includes the steps of providing the core particle, the silicone surfactant, the isocyanate, and the polyol component. The method also includes the steps of mixing the isocyanate and the polyol component and encapsulating the core particle with the polyurethane layer. |
| 申请公布号 |
US2015158781(A1) |
申请公布日期 |
2015.06.11 |
| 申请号 |
US201314401854 |
申请日期 |
2013.05.20 |
| 申请人 |
BASF SE |
发明人 |
Neff Raymond;Gershanovich Alexander;Mente Donald |
| 分类号 |
C05G3/00;C05C9/00 |
主分类号 |
C05G3/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An encapsulated particle comprising:
A. a core particle comprising a fertilizer; and B. a polyurethane layer disposed about said core particle and comprising the reaction product of;
(i) an isocyanate, and(ii) a polyol component comprising a first polyol having a nominal functionality of at least 2.5 and a hydroxyl number of from 20 to 300 mg KOH/g; in the presence of a silicone surfactant; wherein the polyurethane layer comprises the silicone surfactant. |
| 地址 |
Ludwigshafen DE |
