CN105360113A - Preparation method for synergistic pesticide microemulsion - Google Patents

Abstract

The present invention relates to a novel pesticide dosage form as well as preparation and application of a synergistic microemulsion and a synergistic pesticide microemulsion. The synergistic microemulsion comprises the following components in parts by weight: 2-4 part of a surfactant, 1-2 parts of a high-molecular binder, 5-8 parts of a cosolvent and 86-91 parts of water. The preparation and application method of the synergistic pesticide microemulsion comprise the steps of 1) uniformly mixing the surfactant, the polymer binder, the cosolvent and water proportionally to obtain the synergistic microemulsion; and 2) mixing the synergistic microemulsion obtained in the step 1) with botanical pesticide ''Zhifengning'' with a weight ratio of 1: (1-2), thereby obtaining the synergistic pesticide microemulsion. The product is diluted, and contacted with crops through spraying, thereby exerting efficacy. According to the present invention, the dispersion degree of the pesticide in water is effectively increased and the contact points and adhesive force of the pesticide to the crop surfaces are increased, so that a purpose of enhancing the efficacy is achieved.

Description

The preparation method of Synergistic fertilizer microemulsion

Technical field

The invention belongs to the development field of class tool microemulsion with broad prospects for development, be specifically related to a kind of preparation method of Synergistic fertilizer microemulsion.

Background technology

China is a large agricultural country, populous, and the volume increase good harvest of agricultural is related to the vital interests of the people, the economic development of country and the steady progression of society.And effective control of disease, worm, grass, mouse etc. in agricultural production is the important step ensureing agricultural produce good harvest.In decades, just because of the effective control of agricultural chemicals to damage by disease and insect, just make agricultural product keep stable high yield, just make China produce on limited arable area and ensure that population increases required agricultural product fast.According to estimates, the loss that our times causes due to pest accounts for 34% of farmland output, 20% of product storage, in the loss retrieved, the effect of agricultural chemicals accounts for 70% ~ 80%, and other prevention and controls accounts for 20% ~ 30% altogether, particularly when damage by disease and insect becomes the principal element of limiting output, adopt chemical pesticide control can prevent large disaster from occurring, rapid raising output, therefore, chemical control is most convenient, the most stable, the most effectively and the most reliable means of prevention, and its important function in agricultural production is mathematical.

Conveniently use, agricultural chemicals is processed to different formulations, and current China's agricultural chemicals selling market is still based on old formulations such as missible oil (aqueous emulsion) and aquas, and account for 50%, missible oil uses the organic matter such as toluene, dimethylbenzene as solvent in a large number.Nearly 300,000 tons of the organic solvent of annual use, there is inflammable and explosive and poisoning problem man-hour adding in these solvents, at substantial fund and cause fossil resources waste while, also bring serious pollution to natural environment, directly harm formed to the mankind and mammal.In today that environmental requirement is stricter, in the urgent need to developing some safety, efficiently novel form, for this phenomenon, many scientific research personnel propose many novel forms such as suspending agent, aqueous solvent, water-dispersible granules, emulsifiable concentrate, pesticide slow-releasing agent, fumigant, multi-functional and mix preparation.These formulations have certain advantage, but it is large also to there is technical difficulty, narrow application range, the problems such as production cost is higher.

Agricultural chemicals is made microemulsion and is called microemulsion, microemulsion is the novel form of a kind of safe, the environmentally-friendly water-based property that China occurred in recent years, Ye Shi developed country paid attention to a kind of excellent liquid dosage form replacing emulsifiable concentrates for agricultural chemicals researched and developed in recent years, and had become the direction of pesticides new formulation development in the world.The product that current external agro-chemical companies is registered in China is also little, and the product of domestic registration is also few.Along with China constantly increases the Innovation Input of microemulsion, China's microemulsion just enters the stage of developing rapidly, kind and quantity increase to some extent, quality also improves constantly, compared with missible oil, microemulsion substantially need not or with an organic solvent less, storing safety, without inflammable and explosive worry, excitant, stink alleviates, field efficacy is high by 5% ~ 10%, there is no the precipitation of missible oil, the shortcomings such as caking and poor fluidity, also higher to the safety of crop, also environmental pollution is there is not after using, so be considered to and Environmental compatibility one " green bioagrochemicals " preferably, it is the most preferred dosage form replacing missible oil.

Because agricultural chemicals main component is hydrophobic organic matter, be sprayed onto on plant more weak with the adhesion on blade face, it is not resistance of rainwater washing against in use, and agriculture the effective elements of the medicine also easily volatilizees, and causes the result of use of agricultural chemicals undesirable.Therefore, although existing microemulsion improves the dispersity of pesticide active ingredient in water to a certain extent, agricultural chemicals fundamentally can not be solved in the problem such as blade face adhesion is more weak.

Synergistic fertilizer microemulsion provided by the invention, for Problems existing in current Pesticide use, composite by by former medicine and kinds of surface activating agent, water base adhesive and auxiliary agent, make it can form homodisperse oil-in-water type fine droplet in water, the dispersity of effective increase agricultural chemicals in water, is conducive to pesticide spraying even.The use of water base adhesive simultaneously also helps the absorption of agricultural chemicals at plant leaf surface, improves the adhesion of agricultural chemicals at plant leaf surface, thus strengthens drug effect, agricultural chemicals is played a role lastingly, has wide market prospects.

Summary of the invention

Inventor experimental studies have found that through a large amount of, and the technical scheme realizing the object of the invention is specific as follows:

The preparation method of synergy microemulsion, is characterized in that being made up of according to the following number of weight ratio following component:

Surfactant: high polymer binder: cosolvent: water=2 ~ 4:1 ~ 2:5 ~ 8:86 ~ 91, wherein:

Described surfactant is selected from one or more in OP-10, lauryl sodium sulfate, dodecyl sodium sulfate;

Described cosolvent be selected from methyl alcohol or ethanol one or both;

Described high polymer binder is selected from one or more in carboxymethyl cellulose, carboxymethyl starch or HES.

Preparation and the Synergistic fertilizer microemulsion described in using are by synergy microemulsion and agricultural chemicals by the abundant mixed dissolution of certain weight ratio, wherein:

Described synergy microemulsion and the ratio of agricultural chemicals are 1:1 ~ 2;

Described agricultural chemicals is that botanical pesticide " plants Fengning ".

Advantage of the present invention and beneficial effect as follows:

Synergistic fertilizer microemulsion of the present invention, efficient, nontoxic, non-corrosiveness, scientific formulation is reasonable, with low cost, and preparation technology is simple, and safety, environmental protection, energy-conservation.

Embodiment

Specific embodiment of the invention scheme and effect will be illustrated by following examples, but not limit practical range of the present invention with this.

Embodiment

The preparation method of synergy microemulsion, is characterized in that being made up of according to the following number of weight ratio following component:

Surfactant: high polymer binder: cosolvent: water=3:1:8:88;

By above proportioning material joined in blender and carry out fully dissolving being uniformly mixed, be synergy microemulsion.The abundant mixed dissolution of ratio of again microemulsion and botanical pesticide " are planted Fengning " 1:1.5 by weight, obtains Synergistic fertilizer microemulsion finished product.

Claims (2)

1. the preparation method of synergy microemulsion, is characterized in that being made up of according to the following number of weight ratio following component:

Surfactant: high polymer binder: cosolvent: water=2 ~ 4:1 ~ 2:5 ~ 8:86 ~ 91, wherein:

Described surfactant is selected from one or more in OP-10, lauryl sodium sulfate, dodecyl sodium sulfate;

Described cosolvent be selected from methyl alcohol or ethanol one or both;

Described high polymer binder is selected from one or more in carboxymethyl cellulose, carboxymethyl starch or HES.

2. preparation and the Synergistic fertilizer microemulsion described in using, be by synergy microemulsion and agricultural chemicals by the abundant mixed dissolution of certain weight ratio, wherein:

Described synergy microemulsion and the weight ratio of agricultural chemicals are 1:1 ~ 2;

Described agricultural chemicals is that botanical pesticide " plants Fengning ".