Process for preparing a novel crystalline form of emamectin benzoate and use the same
AssigneeRotam Agrochem International Company Limited
InventorJames Timothy BRISTOW
Life of this patent
Estimating the term…
Loading patent…
AssigneeRotam Agrochem International Company Limited
InventorJames Timothy BRISTOW
Estimating the term…
A crystalline modification V of emamectin benzoate, exhibiting at least 3 of the following reflexes in an X-ray powder diffractogram recorded using Cu—Kα radiation at 25° C.: 2θ=4.34±0.2 (1) 2θ=10.58±0.2 (2) 2θ=12.32±0.2 (3) 2θ=15.19±0.2 (4) 2θ=18.57±0.2 (5) 2θ=20.41±0.2 (6) A process for the preparation of emamectin benzoate in the aforementioned form comprises i) preparing a solution of a solid form of emamectin benzoate in a solvent comprising ethyl acetate and n-hexane; ii) effecting crystallization of emamectin benzoate from the solution; and iii) isolating the emamectin benzoate formed. The crystalline modification V can be formulated to any suitable pesticidal formulations.
A crystalline modification V of emamectin benzoate, exhibiting at least 3 of the following reflexes in an X-ray powder diffractogram recorded using Cu—Kα radiation at 25° C.:
(canceled)
The method according to claim 23, wherein the insects, nematodes and plant parasites are selected from the group consisting of Tribolium sp., Tenebrio sp., (for stored grains), spider mites (Tetranychus sp.), aphids (Acyrthiosiphon sp.), migratory orthopterans, such as locusts and immature stages of insects living on plant tissue of agricultural plants, southern army worm and Mexican bean beetle larvae, pine coneworm (Dioryctria spp.), pine cone seed bug (suppression of Leptoglossus and Tetyra spp. in the year of treatment), aphid, bagworm, fall webworm, Japanese beetle, gypsy moth, mimosa webworm, oak, tussock moth, leafminers (such as Lepidoptera, coleoptera, pine needle scale, red palm mite, sawfly (such as elm, pine), tent caterpillars (such as Eastern, Forest, Pacific, and Western), western spruce, budworm, winter moth, flatheaded borers (such as adult and larvae of bronze birch borer, emerald ash borer and two-lined chestnut borer), clearwing borers (such as ash and sequoia pine pitch tube moth), ambrosia beetles, roundheaded borers (including asian longhorn beetles), scolytids (bark beetles) lps engraver beetles, mountain pine beetle, southern pine beetle, spruce beetle, western pine beetle, cynipid gall wasps including black oak gall, pinewood nematode, lilac borer, ash borer (Podosesia syringae) and Meloidogyne sp.
Dependencies are inferred from the claim text.