阅读说明：本技术 一种除草组合物 (Weeding composition ) 是由 殷勇 邱丰 胡细佳 左元明 杨剑星 聂珍 于 2018-08-20 设计创作，主要内容包括：本发明涉及一种除草组合物,按质量份数计包括：三氯吡氧乙酸原药1％～60％,成盐剂1％～20％,表面活性剂1～30％,余量的填料。本发明的组合物可以明显改善药物在植物表面的沉积和穿透效果,增强药剂穿透细胞器膜结构的能力,使该组合物比现有的三氯吡氧乙酸及三氯吡氧乙酸丁氧基乙酯具有更高的除草活性。(The invention relates to a weeding composition, which comprises the following components in parts by weight: 1-60% of triclopyr original drug, 1-20% of salt forming agent, 1-30% of surfactant and the balance of filler. The composition of the invention can obviously improve the deposition and penetration effect of the medicine on the surface of the plant, enhance the capability of the medicine penetrating the membrane structure of the organelle, and enable the composition to have higher herbicidal activity than the existing triclopyr and triclopyr butoxyethyl ester.)

1. A weeding composition comprises the following components in parts by weight:

1-60% of triclopyr original drug, 1-20% of salt forming agent, 1-30% of surfactant and the balance of filler.

2. The composition of claim 1, further comprising a pH adjuster 0-5%.

3. Composition according to claim 1, characterized in that the salt former is selected from one or more of dimethylamine, ethylenediamine, diethylenetriamine, triethylenetetramine, triisopropanolamine, tetraethylenepentamine.

4. The composition of claim 1 or 2, wherein the surfactant is selected from the group consisting of calcium dodecylbenzenesulfonate, polyoxyethylene polyoxypropylene block compound, castor oil polyoxyethylene ether, alkylphenol polyoxyethylene ether polyoxypropylene ether, benzyl phenol polyoxyethylene ether, phenethylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and the like, fatty amine polyoxyethylene ether, tallow amine, fatty amide nitrogen methyl taurate, octadecyl amine acetate, coconut amine acetate, polyoxyethylene alkylamine, fatty acid ethylene oxide adduct, phenethylphenol polyoxyethylene ether polyoxypropylene ether, alkylphenol polyoxyethylene ether formaldehyde condensate, sodium lignosulfonate, calcium lignosulfonate, alkylnaphthalene sulfonate formaldehyde condensate, rosin-based quaternary ammonium salt, alkylphenol polyoxyethylene ether phosphate, and the like, One or more of saponin, tea seed cake powder, fatty alcohol-polyoxyethylene ether sulfate, sodium dodecyl benzene sulfonate, polycarboxylate, etc.

5. The composition according to claim 4, wherein the surfactant is selected from the group consisting of fatty amine polyoxyethylene ether, tallow amine, fatty amide sodium methyl taurate, octadecyl amine acetate, coco amine acetate, and polyoxyethylene alkyl amine.

6. The composition according to any one of claims 1 to 5, wherein the filler is selected from one or more of water, white carbon, kaolin, precipitated calcium carbonate, diatomaceous earth, corn starch, quartz sand, talc, ammonium sulfate, sodium chloride, potassium chloride, precipitated calcium, and the like.

7. The composition according to any one of claims 2 to 6, characterized in that the pH adjusting agent is: organic substances such as ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylpentamine, pentaethylenehexamine, monomethylamine, dimethylamine, trimethylamine, monoethylamine, diethylamine, triethylamine, isopropylamine, ethanolamine, diethanolamine, and triethanolamine, and/or inorganic substances such as potassium hydroxide, sodium hydroxide, ammonia (including liquid ammonia), sodium carbonate, potassium carbonate, and metal oxides.

8. A process for preparing a composition as claimed in any one of claims 1 to 7, characterized in that: adding a salt forming agent into deionized water, gradually adding triclopyr under stirring, stirring while adding, heating to raise the temperature to completely dissolve the triclopyr, adjusting the pH to 5.0-6.5, cooling to 30-40 ℃, adding an auxiliary agent such as a surfactant and the like, and uniformly stirring to obtain the triclopyr.

9. Use of a composition according to any one of claims 1 to 7 for controlling broadleaf weeds.

Technical Field

The invention belongs to the technical field of pesticides, and particularly relates to a herbicide containing triclopyr and a preparation method thereof.

Background

Triclopyr belongs to a systemic conduction type selective herbicide, can be absorbed through the page and root system of a plant, is conducted in the plant body, and can be used for preventing and controlling broadleaf weeds. Triclopyr is slightly water soluble and difficult to make into aqueous formulations, and therefore its esters are used to expand the range of dosage forms during actual use. For example, triclopyr butoxyethyl ester, triclopyr triethylamine salt and the like are registered. No product formed by salifying triclopyr and polybasic organic amine exists in the existing registered products.

Through research, the inventor of the application finds that under the condition of the same prevention effect, the consumption of triclopyr can be reduced by using dimethylamine, ethylenediamine, triisopropanolamine and tetraethylenepentamine of the triclopyr, and the triclopyr prepared by selecting proper organic polyamine as a salt forming agent can obviously improve the weeding effect of the triclopyr preparation, is superior to the existing butoxyethyl triclopyr and can reduce the medication cost. Meanwhile, excessive amine can also inhibit the hydrolysis of the active ingredient triclopyr, and the herbicide with high volatility is easy to cause phytotoxicity.

Disclosure of Invention

The invention aims to provide a salt of triclopyr, in particular dimethylamine, ethylenediamine, triisopropanolamine and tetraethylenepentamine of the triclopyr, which can improve the utilization rate of the triclopyr and reduce the volatility of the triclopyr, thereby improving the safety of crops. The technical scheme adopted by the invention is as follows:

a weeding composition comprises the following components in parts by weight:

1-60% of triclopyr original drug, 1-20% of salt forming agent, 1-30% of surfactant and the balance of filler;

preferably, the herbicidal composition further comprises 0-5% of a pH adjuster;

the salt forming agent is organic polyamine capable of forming a covalent bond with the triclopyr, the solubility of a complex formed by the action of the triclopyr and the organic polyamine salt forming agent in water is far higher than that of a triclopyr original drug, and the preferable salt forming agent is one or more selected from dimethylamine, ethylenediamine, diethylenetriamine, triethylenetetramine, triisopropanolamine and tetraethylenepentamine;

the surfactant is selected from calcium dodecyl benzene sulfonate, polyoxyethylene polyoxypropylene block compound, castor oil polyoxyethylene ether, alkylphenol polyoxyethylene ether polyoxypropylene ether, benzyl phenol polyoxyethylene ether, phenethyl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether and similar products thereof, fatty amine polyoxyethylene ether, tallow amine, fatty amide nitrogen methyl sodium taurate, octadecyl amine acetate, cocoamine acetate, polyoxyethylene alkylamine, fatty acid ethylene oxide addition product, phenethyl phenol polyoxyethylene ether polyoxypropylene ether, alkylphenol polyoxyethylene ether formaldehyde condensate, sodium lignosulfonate, calcium lignosulfonate, alkyl naphthalene sulfonate formaldehyde condensate, rosin quaternary ammonium salt, alkylphenol polyoxyethylene ether phosphate, saponin, tea seed powder, fatty alcohol polyoxyethylene ether sulfate, fatty alcohol polyoxyethylene ether, polyoxyethylene alkyl ether formaldehyde condensate, polyoxyethylene alkyl ether, fatty alcohol polyoxyethylene ether, polyoxyethylene alkyl alcohol, polyoxyethylene alkyl ether formaldehyde condensate, fatty amide nitrogen methyl sodium taurate, octadecyl amine acetate, cocoamine acetate, polyoxyethylene alkyl amine, fatty acid ethylene oxide, polyoxyethylene alkyl naphthalene sulfonate formaldehyde condensate, One or more of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, polycarboxylate and the like;

the surfactant is preferably fatty amine polyoxyethylene ether, tallow amine, fatty amide nitrogen methyl sodium taurate, octadecyl amine acetate, coconut amine acetate and polyoxyethylene alkylamine;

the filler is selected from one or more of water, white carbon black, kaolin, light calcium carbonate, diatomite, corn starch, quartz sand, talcum powder, ammonium sulfate, sodium chloride, potassium chloride, light calcium and the like;

the proper auxiliary agents on pesticides such as an auxiliary agent pH regulator, a defoaming agent, an antifreezing agent, a thickening agent, a stabilizing agent and the like can be selectively added according to different formulations; for example, anti-freeze agents: one or more of ethylene glycol, propylene glycol, urea, diethylene glycol, glycerol and the like; thickening agent: one or more of xanthan gum, polyvinyl alcohol, organic bentonite, hydroxymethyl cellulose, magnesium aluminum silicate and the like;

the pH regulator is: organic substances such as ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylpentamine, pentaethylenehexamine, monomethylamine, dimethylamine, trimethylamine, monoethylamine, diethylamine, triethylamine, isopropylamine, ethanolamine, diethanolamine, triethanolamine and the like, and/or inorganic substances such as potassium hydroxide, sodium hydroxide, ammonia (including liquid ammonia), sodium carbonate, potassium carbonate, metal oxides and the like;

the defoaming agent is selected from one or more of polymethyl siloxane, emulsified silicone oil, a higher alcohol fatty acid ester compound, polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polyoxypropylene;

the preparation method comprises the following steps: adding a salt forming agent into deionized water, gradually adding the triclopyr under the stirring condition, stirring while adding, and heating to ensure that the triclopyr is completely dissolved. Adjusting pH to 5.0-6.5, cooling to 30-40 deg.C, adding adjuvants such as surfactant, and stirring.

The invention has the advantages that:

in the herbicidal composition containing triclopyr, the salt forming agent combines two or more active groups of triclopyr, and due to steric hindrance, external metal ions such as calcium ions, magnesium ions, iron ions, aluminum ions and the like are not easy to react with the active groups of triclopyr, so that the composition has better hard water resistance; when the composition is diluted by water and sprayed on the surface of a plant, the effective components are not easy to be passivated under the action of dust on leaf surfaces, so that the speed and the quantity of the medicament penetrating through the surface of the plant and entering plant cells are increased, and the aim of improving the pesticide effect of the triclopyr is fulfilled. Meanwhile, after the herbicide is combined with a specific surfactant (containing amino), the deposition and penetration effects of the herbicide on the surface of a plant are obviously improved, the capability of penetrating the membrane structure of an organelle is enhanced, and the composition has higher herbicidal activity than the existing triclopyr and triclopyr butoxyethyl ester.

Detailed Description

The present invention is further illustrated by the following examples, wherein the percentages are by weight, but the present invention is not limited thereto.

1. Formulation examples