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Water dispersed tablet of pyrethroid pesticide and its prepn

A technology for pyrethroids and insecticides, which is applied to the field of pyrethroid insecticide water dispersible tablets and their preparation, and can solve the problems of unsatisfactory tablet disintegration time, inconvenient storage and transportation, and poor dosage. Mastering and other problems to achieve the effect of improving disintegration time, shortening production cycle and reducing loss

Active Publication Date: 2009-01-21
BEIJING GRAND AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] In order to overcome the shortcomings of the existing dosage forms such as poor control of dosage, inconvenient storage and transportation, easy to cause environmental pollution, and unsatisfactory disintegration time of existing tablets, the invention provides a water-dispersed pyrethroid insecticide. Sexual Tablet New Dosage Form

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Weigh each component raw material according to the following proportioning ratio:

[0057] Deltafluthrin 40g

[0058] Microcrystalline Cellulose 14g

[0059] Polyvinylpyrrolidone 4 g

[0060] NaHCO 3 6 grams

[0061] citric acid 6 grams

[0062] NNO 5g

[0063] Sodium Lignosulfonate 5g

[0064] Sodium dodecylbenzene sulfonate 1 g

[0065] Magnesium stearate 2 g

[0066] Talc powder 2 grams

[0067] Light calcium carbonate 15g

[0068] The above-mentioned components were fully mixed, and after ultrafine pulverization to 325 meshes, they were directly compressed into 1000 tablets to obtain the described deltafluthrin water-dispersible tablets.

Embodiment 2

[0070] Weigh each component raw material according to the following proportioning ratio:

[0071] Deltafluthrin 35g

[0072] Microcrystalline Cellulose 14g

[0073] Polyvinylpyrrolidone 4 g

[0074] NaHCO 3 6 grams

[0075] citric acid 6 grams

[0076] NNO 5g

[0077] Sodium dodecylbenzene sulfonate 1 g

[0078] Magnesium stearate 2 g

[0079] Silicone 2 grams

[0080] Light calcium carbonate 25g

[0081] According to the method described in Example 1, 1000 pieces of deltafluthrin water-dispersible tablets with the stated content were prepared from the raw materials of the above-mentioned components.

Embodiment 3

[0083] Weigh each component raw material according to the following proportioning ratio:

[0084] Deltafluthrin 25g

[0085] Microcrystalline Cellulose 14g

[0086] Polyvinylpyrrolidone 4 g

[0087] NaHCO 3 6 grams

[0088] citric acid 6 grams

[0089] NNO 5g

[0090] Sodium dodecylbenzene sulfonate 1 g

[0091] Magnesium stearate 2 g

[0092] Silicone 2 grams

[0093] Talc powder 2 grams

[0094] Light calcium carbonate 33 grams

[0095] According to the method described in Example 1, 1000 pieces of deltafluthrin water-dispersible tablets with the stated content were prepared from the raw materials of the above-mentioned components.

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PUM

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Abstract

The present invention relates to new preparation form of pyrethroid pesticide for household and farm use, and is especially one kind of water dispersed tablet of pyrethroid pesticide and its preparation process. The water dispersed tablet of pyrethroid pesticide is prepared with pyrethroid pesticide, other pesticide component, disintegrant, adhesive, effervescent agent, wetting agent, disperser and stuffing, and through mixing, crushing and tabletting. It has simple preparation process, high herbicidal effect, accurate use amount, less environmental pollution and other advantages.

Description

technical field [0001] The invention relates to a new dosage form of a pyrethroid insecticide and a preparation method thereof, in particular to a water-dispersible tablet of a pyrethroid insecticide and a preparation method thereof. Background technique [0002] Pyrethroid insecticides are widely used in the control of harmful organisms in households, cities, environmental sanitation, and agriculture. At present, there are more than 40 commercial varieties, and the main processing formulations include emulsifiable concentrate, wettable powder, water emulsion, microemulsion, aerosol, water dispersible granule, etc. However, these dosage forms all have defects such as poor control of dosage, inconvenient storage and transportation, easy to cause environmental pollution and unsatisfactory disintegration time of existing wet-pressed tablets. [0003] The following examples illustrate representative pyrethroid insecticides and their uses: [0004] Generic name: Cyhalothrin ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N53/00A01N25/34
Inventor 张宗俭王勇李钟华张文革王龙根秦友山
Owner BEIJING GRAND AGROCHEM
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