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Method for preparing dicamba sodium salt preparations and prepared dicamba sodium salt preparations

A technology of dicamba sodium salt and dicamba, applied in the field of pesticides, can solve the problems of long disintegration time of water-soluble granules, low conversion rate of raw materials, high production cost, etc., and achieve excellent indicators, high conversion rate of raw materials, processing short process effect

Active Publication Date: 2013-12-25
SHANDONG WEIFANG RAINBOW CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a production method needs to be completed through two steps of sodium salt synthesis and granulation. Therefore, there is a complex process problem in the preparation of dicamba sodium salt preparations using the prior art, and the method has high requirements for equipment but the conversion rate of raw materials is relatively low. low, leading to high production costs
Moreover, the selection of excipients in the prior art is also unreasonable, resulting in long disintegration time and low suspension rate of the prepared water-soluble granules

Method used

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  • Method for preparing dicamba sodium salt preparations and prepared dicamba sodium salt preparations
  • Method for preparing dicamba sodium salt preparations and prepared dicamba sodium salt preparations
  • Method for preparing dicamba sodium salt preparations and prepared dicamba sodium salt preparations

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preparation example Construction

[0038] The invention provides a preparation method of dicamba sodium salt preparation and the prepared dicamba sodium salt preparation. Those skilled in the art can learn from the content of this article and appropriately improve the process parameters to realize the preparation. In particular, it should be pointed out that all similar replacements and modifications are obvious to those skilled in the art, and they are all considered to be included in the present invention. The method and application of the present invention have been described through preferred embodiments, and the relevant personnel can obviously make changes or appropriate changes and combinations to the method and application described herein without departing from the content, spirit and scope of the present invention to realize and Apply the technology of the present invention.

[0039] The reagents used in the present invention are all common commercial products and can be purchased in the market.

Embodiment 1

[0041] The preparation of embodiment 1 dicamba sodium saline dispersible granules

[0042] 40.8g of dicamba (dicamba content 98%), 100g of sodium sulfate, 235.2g of urea and 14.3g of sodium bicarbonate were reacted for 60min at 45-55°C under normal pressure, and 10g of sodium lauryl sulfate and 10g of poly Carboxylate salts were mixed to obtain dicamba sodium salt kneading material. After granulation, drying and sieving, 398 g of dicamba sodium salt 10% WDG finished product was obtained, with a yield of 99.5%.

Embodiment 2

[0043] Embodiment 2 Preparation of Dicamba Sodium Salt Soluble Granules

[0044] 81.6g dicamba (dicamba content 98%), 120g sodium chloride, 126g sodium nitrate and 15.9g sodium hydroxide (sodium hydroxide content 91%) were reacted for 40min at 45-55°C under normal pressure, and 10g Alkyl glucoside and 14g alkylphenol polyoxyethylene polyoxypropylene ether are mixed to obtain dicamba sodium salt kneading material, after granulation, drying and sieving, 395g of dicamba sodium salt 20% WSG finished product is obtained, the yield 98.7%.

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Abstract

The invention relates to the technical field of pesticides, in particular to a method for preparing dicamba sodium salt preparations and the prepared dicamba sodium salt preparations. The preparation method comprises the following steps that 10-80 parts of dicamba, 5-85 parts of inorganic fillers and 5-35 parts of alkaline substances are taken and are mixed with water, and solid-solid reactions are carried out under the temperature ranging from 45 DEG C to 55 DEG C to prepare wet dicamba sodium salt; the wet dicamba sodium salt is mixed with 5-20 parts of surface active agents, and the dicamba sodium salt preparations are prepared through granulation, drying and screening. Because the solid-solid reactions are adopted and are carried out in a moderate mode, dicamba sodium salt reactions, kneading and granulation can be simultaneously carried out, and the technical process is short. Experiments indicate that the suspension rate of the dicamba sodium salt preparations is obviously higher than that of existing products and the disintegration time of the dicamba sodium salt preparations is obviously shorter than that of the existing products.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a preparation method of dicamba sodium salt preparation and the prepared dicamba sodium salt preparation. Background technique [0002] Dicamba is a hormone herbicide, which belongs to the benzoic acid series herbicides. It has a systemic conduction effect and has a significant control effect on annual and perennial broad-leaved weeds. Used for post-emergence spraying, the agent can be quickly absorbed by the leaves and stems of weeds, conduct upwards and downwards through the phloem or xylem, and mostly concentrate in the meristems and parts with vigorous metabolic activities, hindering the normal activities of plant hormones, thus making them die. It has a significant control effect on annual and perennial broad-leaved weeds. Generally, broad-leaved weeds will appear deformed and curled within 24 hours after use, and die within 15-20 days. It is relatively safe for gramine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/40A01N25/14A01P13/00
Inventor 孙国庆侯永生吴勇陈帅李志清
Owner SHANDONG WEIFANG RAINBOW CHEM
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