The present invention relates to a method for the
preparation of a solid formulation of a slow-release crop protection product,
which comprises carrying out a melt extrusion of a composition comprising 0.1 to
80% by weight of at least one fungicidal active ingredient, 0 to 80% by weight
of at least one herbicidal, acaricidal, insecticidal or growth-regulatory active
ingredient, 3 to 80% by weight of a thermoplastic, water-insoluble polymer the
group of the polylactides, 0 to 80% by weight of at least one thermoplastic
water-insoluble polymer, 10 to 80% by weight of at least one mineral filler and
0 to 20% by weight of inorganic or organic additives, and subsequently shaping
the extrudate, and to the solid formulations preparable by this method.
1. A method for the preparation of a solid formulation of a slow-release crop protection product, which comprises carrying out a melt extrusion of a composition comprising (a) 0.1 to 80% by weight of at least one fungicidal active ingredient; (b) 0 to 80% by weight of at least one herbicidal, acaricidal, insecticidal or growth-regulatory active ingredient; (c) 3 to 80% by weight of a thermoplastic, water-insoluble polymer the group of the polylactides; (d) 5 to 80% by weight of at least one polybutylene adipate terephthalate; (e) 10 to 80% by weight of at least one mineral filler; and (f) 0 to 20% by weight of inorganic or organic additives; the total of components (a) to (f) being 100%, and subsequently shaping the extrudate.
2. A method as claimed in claim 1, wherein the composition comprises 5 to 6%
by weight of component (d). 1. A method for the preparation of a solid formulation of a slow-release crop protection product, which comprises carrying out a melt extrusion of a composition comprising (a) 0.1 to 80% by weight of at least one fungicidal active ingredient; (b) 0 to 80% by weight of at least one herbicidal, acaricidal, insecticidal or growth-regulatory active ingredient; (c) 3 to 80% by weight of a thermoplastic, water-insoluble polymer the group of the polylactides; (d) 5 to 80% by weight of at least one polybutylene adipate terephthalate; (e) 10 to 80% by weight of at least one mineral filler; and (f) 0 to 20% by weight of inorganic or organic additives; the total of components (a) to (f) being 100%, and subsequently shaping the extrudate.
3. A method as claimed in claim 1 wherein a fungicidal active ingredient selected the group consisting of pyroquilon, tricyclazol, isoprothiolane, edifenphos, ferimzone, fludioxinil, pencycuron, flutolanil, mepronil, thifluzamid, iprodione, furametpyr and/or the class of the strobilurins is used as component (a).
Yangzhou pioneer chemical CO.,LTD.
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