Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

56 results about "Dichloroprop" patented technology

High-efficiency soil disinfection and activation technology for preventing and controlling protected vegetable soil-borne diseases

InactiveCN107535112APerfect ecological restorationVarious methodsChemicalsInsect catchers and killersEdaphicTillage
The invention relates to a high-efficiency soil disinfection and activation technology for preventing and controlling protected vegetable soil-borne diseases. The technology comprises the following operation steps: in a leisure period after harvest of preceding crops in summer and autumn, cleaning fields, performing fertilization and rotary tillage, and then performing field irrigation; when the water content of soil reaches about 60-70%, spraying lime nitrogen granules; performing rotary tillage and soil mixing on the soil; applying 1,3-dichloropropene emulsion oil; performing seal by coverage with plastic film for 20-30 days, then uncovering the film for airing for 7-10 days, completing fumigation disinfection on soil; applying biological bacterial fertilizer to the field after the fumigation disinfection; performing ecological restoration and activation on the soil, so as to establish beneficial microbial flora of the soil. The technology provided by the invention is mainly used forpreventing and controlling the protected vegetable soil-borne diseases caused by pathogenic nematodes, fungi and bacteria. The technology has a notable effect and a long lasting period of preventingand controlling the soil-borne diseases, has a promoting effect on the crop growth, and particularly has a notable effect of root-knot nematode prevention. The soil disinfection technology is economicand high efficient, and has low cost and notable benefits.
Owner:텐진인스티튜트오브플랜트프로텍션

Weed removal composition containing security agent

InactiveCN1568691ADoes not affect the control effectReduce drug damageBiocideAnimal repellantsWeedCrotonates
The invention discloses a herbicidal compositions containing safety agent, which contains 3-methyl-2-[5-(2-chlor-4- trifluoromethylphenoxy)-2-nitrylbenzoxy]-3-ethyl crotonate(SYP-249) as effective constituent and a herbicidal safety agent selected from fenchlorazole, mefenpyr-diethyl, dichlormid, brassinolide. Herbicidal compositions is respectively processed to missible oil, suspending agent (emulsion), aqueous emulsion, microemulsion, water dispersed granule, wettable powder. Disposal of the wheat leaf and growth spot with the said composition can relieve the damage to wheat of herbicide without influencing the weeds prevention and expelling effect.
Owner:SHENYANG RES INST OF CHEM IND

Less colored trans-1,3-dichloropropene and process for its production

Less colored trans-1,3-dichloropropene and a process for producing it, are presented.A composition comprising cis-1,3-dichloropropene, trans-1,3-dichloropropene and C6 compounds, is subjected to a distillation step and to a step of reacting chlorine or bromine, to remove cis-1,3-dichloropropene as a low boiling component, and then the residue is distilled to remove the chlorinated C6 compounds as a high boiling component and to obtain trans-1,3-dichloropropene as a low boiling component.
Owner:ASAHI GLASS CO LTD

Method for preparing acrylic ester and separation 1, 2-dichloropropane by using DD mixing agent

The present invention relates to a method capable of utilizing DD mixture to prepare acrylate and separating 1,2-dichloropropane from it. Said invention utilizes the action of 1,3-dichloropropene in the DD mixture and acrylic acid or methylacrylic acid, alkali, catalyst and and polymerization inhibitor to synthesize 3-chloro-2-propenyl acrylate or 3-chloro-2-propenyl 2-methacrylate, and utilizes the distillation to make it be separated from 1,2-dichloropropane. Said method includes the steps of raw material pretreatment, catalytic esterification reaction, product separation and product refinement.
Owner:SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY

Production method of cis or trans-1, 3-dichloropropene

The invention provides a production method of cis or trans-1, 3-dichloropropene, mutual conversion of cis or trans-1, 3-dichloropropene can be carried out under the condition that visible light or ultraviolet light is not needed by using a catalyst, the conversion direction can be freely selected according to actual requirements, the equipment is simple, the cost is low, and the production method is suitable for industrial production. According to the technical scheme of the invention, the catalyst is simple in preparation process and free of special design, the same set of equipment can be used for preparing trans-1, 3-dichloropropene from cis-1, 3-dichloropropene and can also be reversely operated, only corresponding products need to be controlled to enter the product tank and the raw material tank by using pipelines, and the catalyst in the technical scheme of the invention is low in price and easy to obtain, and can be used for preparing trans-1, 3-dichloropropene from cis-1, 3-dichloropropene. Various catalysts can be mixed without affecting the catalytic effect and can be obtained by recycling waste materials, the reactor does not need illumination, can be freely designed and can adapt to the large-scale production requirement, the gas phase of the reactor enters the rectifying tower through flash evaporation, continuous production can be achieved, and operation is easy and convenient.
Owner:JIANGSU RUIHENG NEW MATERIAL TECH CO LTD +1

Clean and environment-friendly production process of 2-chloro-5-chloromethylthiazole

The invention relates to a clean and environment-friendly production process of 2-chloro-5-chloromethylthiazole, which comprises the following steps: dissolving sodium thiocyanate in water, dropwiselyadding 2, 3-dichloropropene, carrying out heat preservation reaction after the dropwisely adding is completed, washing the obtained material with water, layering, and distilling to obtain an intermediate product 2-chloropropenyl isothiocyanate; dissolving the intermediate product in dichloroethane, dropwise adding sulfonyl chloride for the first time at the temperature of 30-60 DEG C, carrying out heat preservation reaction after dropwise adding is finished, degassing, desolventizing and cooling the obtained material, dropwise adding sulfonyl chloride for the second time, carrying out heat preservation reaction after dropwise adding for the second time, adding a stabilizer into the obtained material, and distilling to obtain 2-chloro-5-chloromethylthiazole. According to the invention, a pure byproduct sodium chloride is obtained, and the problem of high ammonia-nitrogen wastewater is solved. Due to the fact that the sulfonyl chloride is appropriate in use amount and is added in two times, by-products of sulfur dioxide and hydrogen chloride gas are reduced, the problem of environmental pollution is solved, and the production process is mild in reaction condition, small in toxicity,high in yield and purity and environmentally friendly.
Owner:河北硕俊生物科技有限公司

Synthesis method of O-(3-chloro-2-propenyl) hydroxylamine

The invention belongs to the technical field of organic synthesis, and particularly discloses a synthesis method of O-(3-chloro-2-propenyl) hydroxylamine. The synthesis method comprises the following steps of: carrying out a heating reaction on a hydroxylamine solution and methyl isobutyl ketone to obtain methyl isobutyl ketoxime, then carrying out a reaction on the methyl isobutyl ketoxime, 1, 3-dichloropropene and an alkali liquor, after the reaction is finished, adjusting the reaction liquid to be weakly acidic by using acid, carrying out phase splitting, extracting a water phase by using methyl isobutyl ketone, combining organic phases, washing with water, removing water, and recovering the methyl isobutyl ketone to obtain the product 0-(3-chloro-2-propenyl) hydroxylamine. According to the method, methyl isobutyl ketone serves as an amino protective agent and a solvent at the same time, the molecular structure is not changed before and after the reaction, the defects that a large amount of ethyl acetate is consumed and acetic acid and sodium chloride are produced as byproducts in a traditional process can be overcome, and the method is an efficient, environment-friendly and high-yield 0-(3-chloro-2-propenyl) hydroxylamine synthesis method and is suitable for industrial production.
Owner:SHANGHAI DONGGENG CHEM TECH CO LTD

Production method of 2,3-dichloro-1-propene compound and production device of production method of 2,3-dichloro-1-propene compound

The invention belongs to the technical field of production of compounds, and discloses a production method of a 2,3-dichloro-1-propene compound and a production device of the production method of the2,3-dichloro-1-propene compound. Liquid caustic soda and a catalyst are added into 1,2,3-trichloropropane, under a heating condition, the 1,2,3-trichloropropane is transformed into 2,3-dichloro-1-propene with a content higher than 90%, and the 2,3-dichloro-1-propene with the content higher than 90% is subjected to continuous rectification or batch rectification to produce 2,3-dichloro-1-propene with a content higher than 99%. A product produced through the production method of the 2,3-dichloro-1-propene compound and the production device of the production method of the 2,3-dichloro-1-propene compound is good in quality, high in yield and low in cost, therefore, the route method for producing the 2,3-dichloro-1-propene by means of the 1,2,3-trichloropropane, the liquid caustic soda and thecatalyst under the heating condition is suitable for large-scale popularization, a 2,3-dichloro-1-propene crude product can be obtained, the yield is higher than 98%, and the 2,3-dichloro-1-propene crude product is subjected to continuous rectification or batch rectification to produce 2,3-dichloro-1-propene with a content up to 99.8% or above.
Owner:湖南莱万特化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products