WILLIAM R. JOHNSON,HARVEY M. GOERTZ,RICHARD J. TIMMONS
申请号：
BR9906487
公开号：
BR9906487B1
申请日:
1999.06.09
申请国别(地区):
BR
年份:
2013
代理人:
摘要：
A controlled release fertilizer formed from nutrient granules having intermediate or precoat layers of organic oil, such as raw linseed oil, prior to application of a polymeric, encapsulating coat. The precoat may also contain a binding agent, such as a fine clay, and a drier. The new fertilizer composition is made by a process of applying the oil precoat, but not curing it until after the encapsulating coat is applied. The use of the precoat provides more desirable controlled (delayed) release characteristics at a lower weight of the encapsulating coat, particularly for nutrient cores having a relatively large number of surface imperfections or discontinuities.
