EP 0671878 A1 19950920 - MICROCAPSULE FORMULATIONS OF AGRICULTURAL CHEMICALS.
Title (en)
MICROCAPSULE FORMULATIONS OF AGRICULTURAL CHEMICALS.
Title (de)
MIKROKAPSELFORMULIERUNGEN VON LANDWIRTSCHAFTLICHEN STOFFEN.
Title (fr)
FORMULATIONS EN MICROCAPSULES DE PRODUITS CHIMIQUES A USAGE AGRICOLE.
Publication
Application
Priority
- US 98790392 A 19921204
- US 9311523 W 19931202
Abstract (en)
[origin: WO9413139A1] A composition comprising highly concentrated microencapsules containing pesticides having a skin or shell wall of polyurea, polyamide, polysulfonamide, polyester, polycarbonate of polyurethane suspended in an aqueous liquid containing an emulsifier which is a random co-or terpolymer of vinylpyrrolidone that will form a stable oil-in-water emulsion under the conditions described and a process for preparing said composition by mixing a liquid phase water immiscible pesticide to be encapsulated with a first shell wall component in the aqueous liquid to form an oil-in-water emulsion and then adding a second shell wall component to the emulsion causing the first shell wall component to react with the second wall component to form a skin of polycondensate shell wall about the pesticide to be encapsulated or alternatively when the first shell wall component is an isocyanate or mixture thereof allowing the first shell component in the emulsion to hydrolyze to form amine groups which react with residual isocyanate to generate a shell wall of polyurea which suspensions may be used directly as an aqueous suspension or dried to form water dispersible formulations of microcapsules.
IPC 1-7
IPC 8 full level
A01N 25/04 (2006.01); A01N 25/28 (2006.01); A01N 37/22 (2006.01); B01J 13/14 (2006.01)
CPC (source: EP)
A01N 25/28 (2013.01); B01J 13/14 (2013.01)
Citation (search report)
See references of WO 9413139A1
Designated contracting state (EPC)
BE CH DE ES FR GB GR IT LI NL SE
DOCDB simple family (publication)
WO 9413139 A1 19940623; AU 5681394 A 19940704; AU 672465 B2 19961003; CA 2150920 A1 19940623; EP 0671878 A1 19950920; JP H08504206 A 19960507
DOCDB simple family (application)
US 9311523 W 19931202; AU 5681394 A 19931202; CA 2150920 A 19931202; EP 94902441 A 19931202; JP 51421393 A 19931202