53 results about "Metaldehyde" patented technology

The invention discloses a composition containing niclosamide and metaldehyde and a compound suspension thereof. The niclosamide and the metaldehyde are used as active ingredients of the composition, and the mass ratio of the niclosamide to the metaldehyde is (1-50):(1-10). The composition can be applied to preparation of medicaments for preventing and treating trematodiasis. The aqueous suspension containing the niclosamide and the metaldehyde comprises 1-50 percent of niclosamide, 1-10 percent of metaldehyde, 1-5 percent of wetting agent, 1-20 percent of dispersant, 1-10 percent of anti-freezing agent, 0.1-1 percent of preservative, 0.1-1 percent of pH regulator, 0.1-1 percent of defoaming agent, 0.1-2 percent of thickening agent and the balance of deionized water which complements the volume to 100 percent. The aqueous suspension has the advantages of large prevention and treatment spectrum, good oncomelania killing effect, nonuse of an organic solvent, low volatility, low toxicity,safety to people, animals and environments, low granularity, high suspension rate, convenience in use and obvious comprehensive and economic benefits.

The invention belongs to the technical field of snail control and particularly discloses an efficient snail controlling suspending agent and a preparation method thereof. The suspending agent takes metaldehyde and/or niclosamide ethanolamine as active ingredients and a natural surfactant as an emulsifying agent, and has an efficient snail controlling effect. According to the invention, the pesticide effect of the snail controlling chemical can be enhanced and the snail controlling agent can keep a high pesticide effect in a wide environment range.

The invention discloses a luokuwei-containing compound gastropod-killing composition, the luokuwei-containing compound gastropod-killing composition comprises an active component A and an active component B, the active component A is selected from luokuwei, the active component B is selected from any one of the following compounds: metaldehyde, niclosamide and niclosamide ethanolamine, and the weight ratio of the active component A to the active component B is 1: 60-80:1. The luokuwei-containing compound gastropod-killing composition has a synergistic effect on a plurality of harmful gastropod damaging agricultural production, can reduce the pesticide use amount, reduce pesticide residues on crops, and reduce environmental pollution, is safe to human and livestock, and has good environment compatibility, and diseases have low tendency to produce resistance to the composition.

The invention discloses a biopesticide oncomelania killing drug which is composed of the following raw materials in percentage by weight: 4% of metaldehyde powder, 12-20% of oil-tea-cake powder, 8% of gypsum powder, 1% of an attractant and 73-78% of flour. According to the biopesticide oncomelania killing drug disclosed by the invention, tea saponin is compounded with metaldehyde, the usage amount of the metaldehyde is reduced from 6% to 4%, the content of the metaldehyde in the pesticide is effectively reduced, and the field dosage is reduced; the problem that diseases even cancers are possibly caused due to long-term contact with the pesticide, and genetic mechanisms of living organisms are possibly injured in severe cases so as to cause gene mutation can be solved. The potential hazard of the metaldehyde on the environment and human bodies can be reduced; and the drug effect is obvious, and the dosage cost is reduced.

The invention discloses an application of indole-3-carboxaldehyde and its derivatives in the control of plant diseases caused by phytopathogenic fungi, and provides an application of the indole-3-carboxaldehyde or its derivative or pharmaceutically acceptable salts in the control of plant diseases caused by phytopathogenic fungi, or in the preparation of a pesticide for a biocontrol agent for controlling the plant diseases caused by phytopathogenic fungi. A result of antibacterial activity detection proves that the indole-3-carboxaldehyde and its derivatives have good inhibitory activity against the phytopathogenic fungi, have a good inhibitory effect on the growth and sexual cooperation of plant pathogenic fungi, and can block the formation of double-nuclear mycelia to prevent the phytopathogenic fungi from infecting plants, so the occurrence of plant fungal diseases is effectively inhibited, a reference is provided for the green control of the plant diseases caused by the phytopathogenic fungi, and the indole-3-carboxaldehyde and its derivatives have a wide application prospect.

The invention discloses oncomelania killing medicinal metaldehyde powder. The powder comprises the following components in percentage by mass: 1-50 percent of metaldehyde, 0.5 -2.0 percent of wetting agent, 0.2-2.0 percent of pH regulator and the balance of filler. The oncomelania killing effect of the metaldehyde is enhanced by using the oncomelania killing medicinal metaldehyde powder which is convenient to use and favorable for killing oncomelania in dry and water lacking marshlands, has low toxicity to aquatic organisms such as fish and the like, can also be used at the bank side of a culture zone, solves the situation that no agent is available for the culture zone, and lays a foundation for further controlling trematodiasis.

The invention discloses a slow-release environment-friendly acid applicable to high-temperature storage layer acidification. The slow-release environment-friendly acid comprises the following components in percentage by mass: 8-15% of an amino acid salt, 5-10% of a halogenated acid salt, 5-10% of polyaldehyde, 3-7% of an inorganic ammonium salt, 2-5% of a synergist, 0.1-0.2% of a catalyst and thebalance of water, wherein the synergist is gemini imidazoline, a gemini pyridine quaternary ammonium salt or a mixture of the two components; the catalyst is at least one of copper nitrate, cerous nitrate, cobalt nitrate or lanthanum nitrate; the amino acid salt is at least one of sodium glutamate, sodium glutamate diacetate and sodium glutamate tetraacetate; the halogenated acid salt is at leastone of sodium monochloroformate, potassium monochloroformate, sodium monochloracetate and potassium monochloracetate; and the polyaldehyde is one or two of paraformaldehyde and metaldehyde. The environment-friendly acid disclosed by the invention has the characteristics that a highest use temperature is up to 200 DEG C, the reaction velocity is low, which is about 1/10 of hydrochloric acid, the friction rate is low, which is about 40% of that of water, iron ions can be effectively controlled, no precipitate or residue is generated, and residual acids can be easily recycled, thus being safe andenvironment-friendly.

The invention discloses a method for producing metaldehyde, which comprises polymerization of aldehyde under an acidic condition, and is characterized in that: in polymerization, a compound of a general formula XpOnYm is used as a catalyst; in the formula, X may be S, C or P; Y may be F, Cl, Br, I or CN; P may be 1 or 2; n may be 0, 1 or 2; and m is an integer ranging from 1 to 5. Compared with the prior art, the method has the advantages that: a precursor of an acidic catalyst is used as a catalyst; the acidic catalyst is gradually released in a reaction process; and the catalyst is efficient and the reaction time is shorter. In addition, the catalyst used in the invention is cheap and readily available, the use amount is small, the yield of the metaldehyde is improved effectively to 10.2 percent which is higher than the yield that is 6 percent in modern industry; meanwhile, the reaction time is reduced by at least 3 to 10 hours to 30 to 90 minutes from the original reaction time, and thus, the energy consumption for keeping low-temperature environment is reduced greatly. Meanwhile, the method disclosed by the invention is mild in reaction conditions, and the industrialization can be realized easily.

The invention relates to a pesticide, in particular relates to a weiquan granule formulation and a preparation method thereof, and belongs to the technical field of chemical industry. The granule formulation comprises 4-5% of metaldehyde raw pesticide, 2% of carbaryl raw pesticide, 80% of carrier, 13% of attractant and 0.1% of coloring agent, wherein the carrier is flour, and the attractant is one of wheat bran, fish meal and white sugar. The granule formulation is a pesticide which is effective for the soft pests such as the snail and the ampullaria gigas, has the functions of stomach toxicity and tagging out, and can enable the pests to secrete a large number of mucus, suffer from the mental numbness, and die from a large number of dehydration since the acetylcholinesterase in the pest body is released in quantity after being eaten or touched by the pests. The weiquan granule formulation can not influence the normal growth of crops, and is low in toxicity when in normal use, thereby being especially suitable for the brassicaceous vegetable, the cabbage and the paddy.

The invention discloses a synergistic insecticidal composition containing avermectin and metaldehyde. The composition comprises effective components of avermectin and metaldehyde with a weight ratio capable of being 1: 0.1-80. Pharmacodynamic tests show that the composition has positive characteristics like strong complementarity, significant synergistic effect, expanded control spectrum, decreased application amount, prolonged appropriate application period, high safety to crops, reduced environmental pollution, and strong compatibility with the environment.

The invention belongs to the technical field of pesticides and particularly relates to an agent composition containing metaldehyde and tropane alkali and application thereof. The effective components of the agent composition are the metaldehyde and the tropane alkali, wherein the mass ratio of the metaldehyde to the tropane alkali is 1-30 to 0.001-3. In the composition, the tropane alkali is firstly applied to a snail killing pesticide, does not produce antagonism after being mutually mixed blended with the effective component metaldehyde, has a very good synergic effect and is obviously higher than a single agent in preventing effect, the snail killing efficiency is high, the usage dosage and usage times of agents are decreased, the economic cost is saved, too fast production of agent resistance is avoided, the lasting period of the agents is prolonged, agent residues in agricultural products and the environment are decreased, and environmental sustainable development is promoted. The composition has the special effect on snail killing.

The invention belongs to the technical field of pesticides and particularly relates to application of starch as pesticide padding. When the starch is used as padding, the starch can be mixed with pesticide active components to obtain the following solid formulations: wettable powder, soluble powder, soluble granules, water dispersible granules or granules. Particularly, when the starch is prepared into molluscicidal granules, metaldehyde and carbaryl are used as the pesticide active components and the effect of the starch is obviously better than that of other padding. According to the application, the starch is used as the padding in a pesticide formulation; different from regular kaolin or light calcium, the starch has a better environment-friendly effect, does not cause the pollution to environment, is safe to human and livestock and has good environment compatibility; the starch has a certain bonding property so that a bonding agent is not added when the starch is used as the padding of the soluble granules, the water dispersible granules or the granules.

The invention provides a synthesis method of metaldehyde. The method comprises a polymerization reaction of acetaldehyde in an acidic condition; a compound with the following general formula in the reaction is adopted as a catalyst: HY:CPHSNM.HY; wherein P is an integer from 1 to 8; S is an integer from 1 to 16; M is an integer from 1 to 4; and Y is F, Cl or Br. The synthesis method is mild in reaction, economical, environmentally friendly, and easy to industrialize.

The invention discloses a water dispersible granule for prevention and control of molluscs and a preparation method of the water dispersible granule. The water dispersible granule comprises the following ingredients by mass percentage: 0-85% of metaldehyde, 0-85% of niclosamide ethanolamine salt, 1-3% of wetting agent, 5-20% of emulsification dispersant, 0-5% of disintegrating agent, 0-10% of binding agent, 0.5% of defoaming agent, and a carrier to reach 100%, wherein the mass percentage of metaldehyde and the mass percentage of niclosamide ethanolamine salt cannot be 0% at the same time. The water dispersible granule is convenient to transport, lower in transportation cost, high in active ingredient content, good in dispersity, high in suspensibility and higher in storage stability; no dust is generated basically in a production process; the environmental control cost is low; the water dispersible granule is sprayed for application after the water dispersible granule is diluted with water; the residue of the water dispersible granule in an environment is reduced; the possibility of spray head blocking is low; no dust drift exists during use; the influence on an operator and the surrounding environment is smaller; and the possibility of hazards and environmental pollution is low.

The invention discloses a pesticide for killing mollusk pests. The pesticide comprises 55-60% of a bacterium solution, 10-55% of niclosamide, 5-10% of metaldehyde, 2-6% of a wetting agent, 7-20% of a dispersing agent, 5-15% of an antifreeze agent, 1-2 % of toluene, and 7-9% of enyne bacteria ester. The pesticide provided by the invention can be used in the aspects of the preparation of drugs used for preventing and treating schistosomiasis, and especially in the aspect of killing oncomelania. The pesticide is also effective against pests such as budworms and red spider mites.

The invention discloses a compound composition and a preparation. The compound composition contains two active components; the first active component is methanesulfonyl bacteria oxazole; the second active component is selected from any one of fosthiazate, abamectin and metaldehyde; the chemical name of the methanesulfonyl bacteria oxazole is 2-(p-fluorophenyl)-5-methylsulfonyl-1,3,4-oxadiazole. Compared with a single dosage, the compound composition and the preparation thereof disclosed by the invention have obvious synergistic effects; the prevention and treatment effects on crop diseases and pests are prevented and treated; the use of the pesticide is reduced; the cost is reduced; the lasting period is long; the medication frequency is reduced; and environmental pollution is facilitated.

The invention discloses a method for controlling diseases and pests in hypsizygus marmoreus industrialized production. The method for controlling diseases and pests comprises the following steps: a, sterilizing a hypsizygus marmoreus culture medium firstly; b, putting the sterilized hypsizygus marmoreus culture medium into fungus bags to be packaged; c, putting the packaged fungus bags into a sterilization box to be sterilized, and conducting cooling; d, uniformly laying the cooled fungus bags in a culture device to be cultured; e, after hyphae grow to be full, moving the hyphae to a mushroom house for mushroom induction, controlling the temperature in the mushroom house to be 12-14 DEG C, spraying water to the ground, and cutting an opening in each fungus bag; and f, uniformly laying a layer of 3% metaldehyde granules around the fungus bags, straightening the fungus bags, covering the fungus bags with a mulching film, opening the mulching film for ventilation every morning and evening, and spraying water to the ground and the periphery of the mushroom house for moisturizing. According to the method, land slug trapping and killing can be effective, land slugs are prevented from biting hypsizygus marmoreus in the cultivation process, and therefore, the protection effect of the hypsizygus marmoreus in the cultivation process is improved.

The invention discloses a novel glass fiber composite material used for 3D printing, belonging to the technical field of preparation of materials used for 3D printing. The novel glass fiber composite material used for 3D printing comprises the following raw materials in parts by weight: 83 to 124 parts of glass fiber, 25 to 32 parts of waste plastic, 9 to 14 parts of asparagine, 4 to 8 parts of metaldehyde, 7 to 12 parts of PBT resin, 6 to 9 parts of tributoxyethyl phosphate, 6 to 11 parts of PET resin, 5 to 10 parts of tris(2,4-ditert-butylphenyl)phosphite, 9 to 16 parts of stearic acid, 4 to 7 parts of polyacrylamide, 12 to 20 parts of a specific synthetic agent and 8 to 12 parts of a flame retardant. The novel glass fiber composite material used for 3D printing prepared by using the method provided by the invention has the characteristics of strong tensile strength, bending strength and notch impact strength, high thermal deformation temperature and melt index, etc.; and the product printed by using a 3D-printing technology has the advantages of high quality, high impact resistance, high strength and broad market prospects.

The invention belongs to the field of organic synthesis, and particularly discloses a synthesis method of metaldehyde. The synthesis method comprises the following steps: S1, preparing 1-100 kg of acetaldehyde and 0.05-5 kg of diethyl ether, and adding the diethyl ether into the acetaldehyde; S2, carrying out cooling, then carrying out a reaction by using a heterogeneous solid heteropolyacid loaded catalyst fixed bed, carrying out filtering, washing the obtained solid with water, and carrying out drying to obtain a white crystalline metaldehyde product; and S3, distilling the filtrate, addingsulfuric acid as a catalyst, and separating out acetaldehyde and diethyl ether by distilling for feeding in a next time. According to the synthesis method, the reaction conditions are mild, the cost is low, and the problems of long reaction time, harsh reaction conditions and many side reactions in an old process are solved, so that the process is stable, the yield is high, operation is simple, cost is low, environment protection and safety are achieved, continuous and efficient production is realized, and industrial scale production is facilitated.

The invention provides a formula of a compounded plant extract biological molluscicidal pesticide. The formula comprises 40% of an achyranthes bidentata extract, 10% of 80% tea saponin, 8% of gypsum powder, 1% of an attractant and 41% of flour, wherein the tea saponin and the plant extract of achyranthes bidentata are compounded, metaldehyde in a traditional pesticide can be replaced, and the dosage of field chemical pesticides is reduced; people are prevented from possible diseases and even cancers, or even possible damage to the genetic mechanism of organisms and generation of gene mutation under the condition of long-time contact with the field chemical pesticides; and according to the invention, the potential harm of metaldehyde to the environment and human beings can be reduced, pesticide effect is obvious, pesticide application cost is reduced, an ecological environment is protected, and the compounded tea saponin and achyranthes bidentata have an addition effect on respective snail killing effect.