阅读说明：本技术 吡虫啉乳化剂及其制备方法和应用 (Imidacloprid emulsifier and preparation method and application thereof ) 是由 杨月忠 于 2019-11-12 设计创作，主要内容包括：本发明公开了吡虫啉乳化剂,按照重量百分数计,所述吡虫啉乳化剂包括以下组成制成：吡虫啉0.05-4％；异丙醇4％-8％；乳化剂1％-6％；抗氧化剂0.1-0.5％；增稠稳定剂1-2％；溶剂70-80％。本发明在施用过程中,吡虫啉乳化剂兑较多的水(以不损伤植物为基准)制成缓释喷雾施用,吡虫啉随乳化用的鲸蜡硬脂醇、稳定增稠的丙烯酸羟乙酯/丙烯酰二甲基牛磺酸钠共聚物、二甲基甲酰胺溶剂的溶解而缓慢释放出来,由此药性持续时间长、缓慢释放,能有效解决现有的吡虫啉药剂施用后易被植物根系快速吸收,防效短和后期防效差的现象突出,而高浓度的吡虫啉药剂的毒性也大,容易造成植物存在高毒、高残留药剂的技术缺陷。(The invention discloses an imidacloprid emulsifier which comprises the following components in percentage by weight: 0.05 to 4 percent of imidacloprid; 4% -8% of isopropanol; 1% -6% of an emulsifier; 0.1 to 0.5 percent of antioxidant; 1-2% of thickening stabilizer; 70-80% of solvent. In the application process, the imidacloprid emulsifier is mixed with more water (on the basis of not damaging plants) to prepare slow-release spray for application, and the imidacloprid is slowly released along with the dissolution of cetostearyl alcohol for emulsification, the stable and thickened hydroxyethyl acrylate/acryloyl dimethyl taurate copolymer and a dimethylformamide solvent, so that the drug property is long in duration and slowly released, and the technical defects that the conventional imidacloprid drug is easily and quickly absorbed by the root system of the plant after being applied, the phenomena of short control effect and poor control effect at the later stage are obvious, the high-concentration imidacloprid drug is high in toxicity, and the plant has high toxicity and high residual drug are easily caused can be effectively solved.)

1. The imidacloprid emulsifier is characterized by comprising the following components in percentage by weight:

0.05 to 4 percent of imidacloprid; 4% -8% of isopropanol; 1% -6% of an emulsifier; 0.1 to 0.5 percent of antioxidant; 1-2% of thickening stabilizer; 70-80% of solvent.

2. The imidacloprid emulsifier according to claim 1, which is characterized by being prepared from the following components in percentage by weight:

0.5-2% of imidacloprid; 4% -6% of isopropanol; 2% -5% of an emulsifier; 0.2 to 0.4 percent of antioxidant; 1-2% of thickening stabilizer; 70-75% of solvent.

3. The imidacloprid emulsifier of claim 1 wherein the thickening stabilizer is hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer.

4. The imidacloprid emulsifier of claim 1 wherein the antioxidant is tea polyphenol.

5. The imidacloprid emulsifier of claim 1 wherein the solvent is dimethylformamide.

6. The imidacloprid emulsifier according to claim 1, characterized in that the emulsifier is cetearyl alcohol.

7. The method for preparing the imidacloprid emulsifier of claim 1, which is characterized by comprising the following steps:

step SS 1: dissolving imidacloprid in partial solvent by stirring for 10 min;

step SS 2: adding isopropanol into the solution prepared in the step SS1, and stirring for 10 min;

step SS 3: adding an emulsifier into the solution prepared in the step SS2, stirring for 10min, then adding a thickening stabilizer, and stirring for 10 min;

step SS 4: and (3) dissolving the antioxidant by using the balance of solvent, adding the obtained solution into the solution prepared in the step SS3, and stirring and mixing for 20min to obtain the imidacloprid emulsifier.

8. The method for preparing an imidacloprid emulsifier according to claim 7, which is characterized by comprising the following steps:

step SS 1: dissolving imidacloprid in partial solvent by stirring for 10 min;

step SS 2: adding isopropanol into the solution prepared in the step SS1, and stirring for 10 min;

step SS 3: adding cetearyl alcohol into the solution prepared in the step SS2, stirring for 10min, then adding hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer, and stirring for 10 min;

step SS 4: and (3) dissolving tea polyphenol with the balance of solvent, adding the obtained solution into the solution prepared in the step SS3, and stirring for 20min for mixing to obtain the imidacloprid emulsifier.

9. Use of the imidacloprid emulsifier of claim 1 as a slow release insecticide and to control subterranean pests.

Technical Field

The invention relates to an imidacloprid emulsifier, and a preparation method and application thereof, and belongs to the technical field of biological product research and development.

Background

The imidacloprid is one of the most used insecticides in the world, belongs to chloronicotinyl insecticides, is an action body of a nicotine acetylcholine receptor, interferes the motor nervous system of pests to cause the failure of chemical signal transmission, and is mainly used for preventing and treating piercing-sucking mouthpart pests. The imidacloprid has the characteristics of broad spectrum, high efficiency, low toxicity, low residue, safety to people, livestock and plants and the like, has good quick action and multiple drug effects of contact poisoning, stomach toxicity, systemic absorption and the like.

The existing imidacloprid medicament is easy to be quickly absorbed by plant roots after being applied, has the prominent phenomena of short control effect and poor later control effect, and the high-concentration imidacloprid medicament has high toxicity and easily causes high toxicity and high residual medicament in plants. Therefore, it is necessary to develop a slow-release low-concentration imidacloprid emulsifier with long drug property duration.

Disclosure of Invention

The invention aims to overcome the technical defects in the prior art, solve the technical problems and provide an imidacloprid emulsifier, and a preparation method and application thereof.

The invention adopts the following technical scheme: the imidacloprid emulsifier is characterized by comprising the following components in percentage by weight:

0.05 to 4 percent of imidacloprid; 4% -8% of isopropanol; 1% -6% of an emulsifier; 0.1 to 0.5 percent of antioxidant; 1-2% of thickening stabilizer; 70-80% of solvent.

As a preferred embodiment, the imidacloprid emulsifier is prepared from the following components in percentage by weight:

0.5-2% of imidacloprid; 4% -6% of isopropanol; 2% -5% of an emulsifier; 0.2 to 0.4 percent of antioxidant; 1-2% of thickening stabilizer; 70-75% of solvent.

As a preferred example, the thickening stabilizer is hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer.

In a preferred embodiment, the antioxidant is tea polyphenol.

As a preferred example, the solvent is dimethylformamide.

As a preferred example, the emulsifier is cetearyl alcohol.

The invention also provides a preparation method of the imidacloprid emulsifier, which is characterized by comprising the following steps:

step SS 1: dissolving imidacloprid in partial solvent by stirring for 10 min;

step SS 2: adding isopropanol into the solution prepared in the step SS1, and stirring for 10 min;

step SS 3: adding an emulsifier into the solution prepared in the step SS2, stirring for 10min, then adding a thickening stabilizer, and stirring for 10 min;

step SS 4: and (3) dissolving the antioxidant by using the balance of solvent, adding the obtained solution into the solution prepared in the step SS3, and stirring and mixing for 20min to obtain the imidacloprid emulsifier.

As a preferred embodiment, the preparation method comprises the following steps:

step SS 1: dissolving imidacloprid in partial solvent by stirring for 10 min;

step SS 2: adding isopropanol into the solution prepared in the step SS1, and stirring for 10 min;

step SS 3: adding cetearyl alcohol into the solution prepared in the step SS2, stirring for 10min, then adding hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer, and stirring for 10 min;

step SS 4: and (3) dissolving tea polyphenol with the balance of solvent, adding the obtained solution into the solution prepared in the step SS3, and stirring for 20min for mixing to obtain the imidacloprid emulsifier.

The invention also provides the use of the imidacloprid emulsifier as a slow-release pesticide and for preventing and controlling underground pests.

The invention achieves the following beneficial effects: aiming at the technical defects that the conventional imidacloprid medicament is easily and quickly absorbed by a plant root system after being applied, has short control effect and poor later control effect, and the high-concentration imidacloprid medicament has high toxicity and easily causes high toxicity and high residual medicament on plants, the low-concentration imidacloprid emulsifier is prepared by mixing the low-concentration imidacloprid with cosolvent isopropanol, emulsifying cetostearyl alcohol, stably-thickened hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer, antioxidant tea polyphenol and a dimethylformamide solvent, and is prepared by mixing the imidacloprid emulsifier with more water (taking no damage to plants as a reference) to prepare slow-release spray for application, wherein the imidacloprid is slowly released along with the dissolution of emulsifying cetostearyl alcohol, stably-thickened hydroxyethyl acrylate/sodium acryloyldimethyl taurate copolymer and the dimethylformamide solvent, the imidacloprid sustained-release insecticide has long drug property and slow release, and can effectively solve the technical defects that the prior imidacloprid insecticide is easy to be quickly absorbed by plant roots after being applied, has short control effect and poor later control effect, and the high-concentration imidacloprid insecticide has high toxicity and easily causes high toxicity and high residual insecticide in plants.

Detailed Description

The invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.