MULQUEEN, PATRIC JOSEPH,WALLER, ANNE,SHIRLEY, IAN MALCOLM,CHAVANT, MICHAEL
申请号：
NZ59702906
公开号：
NZ597029A
申请日:
2006.12.22
申请国别(地区):
NZ
年份:
2012
代理人:
摘要：
Disclosed herein microcapsules which comprise a biologically active compound and processes for the preparation and for the use of such microcapsules. Particularly disclosed is a product comprising microcapsules which themselves comprise (a) a polymeric shell； and (b) a core which comprises an agrochemical which has a melting point above 25C characterised in that the agrochemical is dispersed as a solid in a hydrophobic material which has a melting point greater than or equal to 25C but which does not exhibit a glass transition temperature, and where the agrochemical has a water-solubility in the range of 0.1 to 100 g/l at 20°C, and is selected from the group consisting of insecticides, herbicides, fungicides, acaricides, rodenticides, molluscicides and plant growth regulators. A process for preparing said product is also disclosed, comprising the steps (i) melting the hydrophobic material to form a hydrophobic liquid； (ii) dispersing the agrochemical in the hydrophobic liquid； (iii) emulsifying the hydrophobic liquid into an aqueous phase； (iv) optionally cooling the resultant emulsion； (v) causing an interfacial polymerisation reaction to occur at the interface between the hydrophobic liquid and the aqueous phase to produce a capsule suspension； and (vi) optionally allowing or causing the capsule suspension to cool.
