- Preparation method of bendiocarb intermediate and active ingredient
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The invention discloses a preparation method of a bendiocarb intermediate and an active ingredient. The preparation method includes: allowing pyrogallic acid to react with 2, 2-dimethoxypropane to generate a 2, 2-dimethyl-4-hydroxyl-1, 3-benzodioxoles solution, and directly using light components 2, 2-dimethoxypropane, 2-methoxypropene and methanol which are evaporated out for next batch after alkali washing; allowing the 2, 2-dimethyl-4-hydroxyl-1, 3-benzodioxoles solution to react with methyl isocyanate to obtain the bendiocarb active ingredient. By recycling raw materials and byproducts, cost is lowered, operation is simplified, production efficiency is improved, and convenience is brought for industrial production.
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Paragraph 0021-0030
(2019/08/07)
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- SYSTEM FOR PROTECTING GOODS DURING TRANSPORT
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A system for protecting stored goods in a container (10), comprises a cage-like structure (20) formed by at least one pesticide treated net (22), capable of enclosing the stored goods, wherein the cage like structure (20), further comprises means for suspending the pesticide treated nets (14, 28, 30, 32, 34), and means for opening and closing the cage-like structure (26) on at least one section (24) of the at least one net (22). The system is particularly useful for the transport of tobacco, coffee, dried fruits, cocoa, nuts, tea, cereals, vegetables, spices and animals.
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- Arthropodicidal granular formulation
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Bendiocarb granules combat corn rootworm. Preferred bendiocarb granules comprise (A) base granules to which the bendiocarb adheres by means of a sticker comprising a hydrocarbon of viscosity at least 20 centipoises, the bendiocarb granules bearing a surface coating of a flowability agent, (B) absorbent base granules impregnated with the bendiocarb, or especially (C) base granules to which the bendiocarb adheres by means of a sticker comprising a water-soluble sticker.
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- Arthropodicidal granular formulation
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Pesticidal bendiocarb granules comprise either (a) base granules to which the bendiocarb adheres by means of a sticker comprising a hydrocarbon of viscosity at least 20 centipoises, the bendiocarb granules bearing a surface coating of a flowability agent, or (b) absorbent base granules impregnated with the bendiocarb.
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- Process for preparing a 4-hydroxy-benzodioxol
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4-Hydroxy-benzodioxoles of formula STR1 in which R1 and R2 are alkyl of 1 to 4 carbon atoms or together represent an alkylene chain of 5 to 7 carbon atoms, which can be converted to pesticides, e.g. by reaction with methyl isocyanate, are prepared by reacting pyrogallol with a ketal of formula STR2 in which R3 and R4 are alkyl of 1 to 4 carbon atoms, at at least 90° C.
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