David D. Taft,Damian Hajduk,Natarajan Balachander,Xinhua Zong,Qiang Zheng
申请号：
US13844529
公开号：
US20130216696A1
申请日:
2013.03.15
申请国别(地区):
US
年份:
2013
代理人:
摘要：
The invention relates to active particles, including core-shell particles, having low burst, controllable, sustained release which are useful for coating seeds. The active particles can also be used in sprayable and dry formulations for treating soil or plants. The particulate coating can also contain inert organic or inorganic material. The invention also relates to methods for preparing the active particles. The methods include: adding additional material to core particles to form a shell, removing active ingredient from a core surface to create an active-depleted shell, and crosslinking the outer layers of a core to form a shell.
