13 results about "Chloroacetamide" patented technology

The application provides a preparation method of a modified cellulose buffer layer-based forward osmosis membrane and a product thereof, and comprises the following steps: 1) dispersing cellulose fibers into an aqueous sodium hydroxide solution to prepare an alkaline dispersion solution of the cellulose fibers; 2) adding 2-chloroacetamide into the alkaline dispersion solution of the cellulose fibers, and continuously heating and stirring to prepare modified cellulose fibers; 3) dissolving the modified cellulose fibers in a solvent to prepare a cellulose solution, and then coating the cellulose solution on the surface of a non-woven fabric; and 4) growing an ultrathin polyamide layer on the surface of the cellulose-non-woven fabric in situ by using m-phenylenediamine and 1,3,5-benzene tris-methyl chloride, so as to prepare the modified cellulose buffer layer-based forward osmosis membrane. The modified cellulose buffer layer-based forward osmosis membrane has excellent water flux and salt retention performance, has good stability of separation performance, has a simple preparation process, can reduce the amount of polyamide, is low in cost, and is suitable for large-scale production.

The application discloses a benzothiazole compound containing an acetamide bond, named N-(4-methylbenzothiazole-2-yl)-2-(pyrrolidine-1-yl)acetamide. A preparation method comprises the following steps: first, preparing an N-(4-methylbenzo[d]thiazole-2-yl)-3-chloroacetamide compound; dissolving the N-(4-methylbenzo[d]thiazole-2-yl)-3-chloroacetamide compound and anhydrous potassium carbonate in dichloromethane to obtain a reaction solution; under the condition of an ice water bath and stirring, adding tetrahydropyrrole dropwise into the reaction solution; reacting at room temperature; monitoring the reaction progress by using TLC; after the reaction is completed, quenching the reaction solution by using water; adjusting the pH to neutral; obtaining a solid crude product; and purifying the solid crude product by recrystallization with ethanol to obtain the benzothiazole compound containing the acetamide bond. The compound can effectively inhibit monoamine oxidase and has low cytotoxicity.

The application provides a method for catalytic degradation of polyolefin plastic by using a eutectic solvent, comprising the following steps: placing polyolefin plastic particles, C4-C6 alkane, amide-AlCl3 eutectic solvent, initiator and polychloromethane in a reactor to perform a catalytic degradation reaction in a water-free and sealed environment to obtain a hydrocarbon product; wherein the C4-C6 alkane is added before the polyolefin plastic particles and the amide-AlCl3 eutectic solvent coexist in the reactor; the amide-AlCl3 eutectic solvent comprises an amide compound and AlCl3; the amide compound is selected from one or more of chloroacetamide, formamide, acetamide, N-methyl formamide, N-methyl acetamide, N,N-dimethyl acetamide, N,N-diethyl acetamide and N,N-dimethyl formamide; the application first applies the eutectic solvent to the catalytic degradation of the polyolefin plastic, and solves the problems of low efficiency and high cost of the traditional method at low temperature.

The present invention relates to a liquid herbicidal composition. In particular, the present invention relates to a liquid herbicidal composition comprising triazolone herbicide and at least one co-herbicide selected from triketone herbicide and chloroacetamide herbicide; a process for preparing said composition; and a method for controlling weeds using the same.

The present disclosure relates to a method for controlling weeds of Rottboellia genus with herbicidal combinations / compositions comprising chloroacetamide herbicides and dinitroaniline herbicide. The present disclosure further provides a method for controlling weeds using the herbicidal combination possessing enhanced efficacy over the individual herbicides.

The invention belongs to the technical field of environmental microorganisms, and particularly relates to a metolachlor anaerobic degradation strain SRB-9 and application thereof. According to the present invention, a strain SRB-9 capable of efficiently and anaerobically degrading metolachlor (MET) is separated from anaerobic sediments, and the morphological and molecular biological identification results show that the strain belongs to nitrate desulfurization vibrio, is named as Nitatidesulfurvibrio sp. SRB-9, is preserved in the China Center for Type Culture Collection (CCTCC), and has a preservation number of CCTCC M 20251781. The invention further provides a preparation method of the metolachlor-metolachlor anaerobic degradation strain SRB-9, and the metolachlor-metolachlor anaerobic degradation strain SRB-9 can be used for efficiently and anaerobically degrading metolachlor-metolachlor anaerobic degradation strain SRB-9, the bacterial strain can rapidly degrade MET under anaerobic conditions, and the degradation half-life period of the bacterial strain to MET with the concentration of 100 [mu] M is 9.6 d. And the strain can also be used for rapidly and anaerobically degrading five kinds of chloroacetamide herbicides such as alachlor, acetochlor, propisochlor, pretilachlor and butachlor. The strain disclosed by the invention is beneficial to repairing wastewater or soil polluted by various chloroacetamide herbicides, enriches a resource library of pesticide degrading bacteria, and has a good application prospect.

The invention belongs to the technical field of biology, and particularly relates to a metolachlor and chloroacetamide herbicide degrading bacterium, an enzyme and application. According to the present invention, the degrading bacterium Rhodococcus sp. L-9 capable of efficiently degrading metolachlor and other chloroacetamide herbicides is found through screening, and the degrading bacterium Rhodococcus sp. L-9 can be used for efficiently degrading metolachlor and other chloroacetamide herbicides. Furthermore, according to the invention, a gene cluster metABD for degrading the metolachlor and other chloroacetamide herbicides is cloned from a strain L-9, and the gene cluster metABD can encode three-component cytochrome P450 oxidase MetABD to catalyze the degradation of the metolachlor and other five chloroacetamide herbicides (alachlor, acetochlor, propisochlor, pretilachlor and butachlor); and enantiomer selectivity is achieved in catalysis of chiral herbicide metolachlor, and good social and economic benefits are achieved.

The invention belongs to the technical field of organic chemistry, and particularly discloses a polyamide-based disulfide ester compound as well as a preparation method and application thereof. The structural formula of the polyamide-based disulfide compound is shown in the specification. N is any integer between 2 and 500. The preparation method comprises the following steps: mixing sulfur, a dichloroacetamide compound, organic alkali and an organic solvent, carrying out a first reaction, adding dibromide after the first reaction is finished, and carrying out a second reaction to obtain the polyamide-based disulfide compound. The polymer provided by the invention has high molecular weight, good optical properties and excellent mechanical properties, large-batch preparation of polyamide-based disulfide compounds can be realized, and meanwhile, main chain editing of the polymer can be realized through ammonolysis reaction with diamine, so that the polymonothiooxamide compound with better thermal and mechanical properties can be obtained.

The invention belongs to the technical field of fine chemical engineering, and provides a cross-linked color fixing agent, a preparation method and application thereof, and a color fixing method. The preparation method comprises the following steps: carrying out dehydration treatment on hyperbranched polyethyleneimine, and carrying out nucleophilic substitution reaction on the dehydrated hyperbranched polyethyleneimine and N-hydroxymethyl chloroacetamide to obtain N-hydroxymethylated hyperbranched polyethyleneimine; and dissolving the N-hydroxymethylated hyperbranched polyethyleneimine in water, and adjusting the pH value of the system to 5-7 to obtain the cross-linked color fixing agent. According to the preparation method, primary amino on a hyperbranched polyethyleneimine molecular chain is used as a nucleophilic reagent and is subjected to nucleophilic substitution reaction with a carbon-chlorine bond in N-hydroxymethyl chloroacetamide, and nitrogen hydroxymethyl is introduced into the hyperbranched polyethyleneimine molecular chain; nitrogen hydroxymethyl forms a cross-linked network in two modes of self-condensation and etherification reaction with active hydrogen; then, residual amido on a hyperbranched polyethyleneimine molecular chain is converted into ammonium salt through neutralization, so that the electrostatic interaction between the hyperbranched polyethyleneimine molecular chain and anionic dye is improved, and finally, the color fixing effect is improved.

The application provides a preparation method of a 4-(2-aminoethyl)piperazine-2,6-dione derivative. Specifically, the method comprises the following steps: (1) a substitution reaction of a compound of formula e with chloroacetamide in a first solvent in the presence of an acid-binding agent to obtain a compound of formula a; (2) a substitution reaction of the compound of formula a with methyl chloroacetate in a second solvent in the presence of an acid-binding agent to obtain a compound of formula b; (3) ring closure of the compound of formula b under the action of sodium hydroxide to obtain a compound of formula c; and the method can further comprise the following step: (4) deprotection of the compound of formula c in a fourth solvent under the action of an acid reagent to obtain a compound of formula d; wherein PG is an amino protecting group. The method has the advantages of mild conditions, convenient operation, no need of high temperature and high pressure, and is more conducive to the synthesis of piperazine-2,6-dione derivatives with a protecting group; and the method has the advantages of high yield and high efficiency of the target compound.

The invention discloses a preparation method of a functional polycarboxylic acid water reducing agent suitable for underwater non-dispersible concrete, which comprises the following steps: (1) adding tetrabutylammonium bromide into ethylene glycol monovinyl polyethylene glycol ether, uniformly stirring, sequentially adding NaOH powder and 2-chloroacetamide, and heating to react to obtain modified EPEG; (2) uniformly mixing olefine acid, thiohydracrylic acid and water to form a mixed solution I; and then adding the modified EPEG and the modified nano silicon dispersion liquid into water, heating and stirring to form an emulsion. And then dropwise adding the mixed solution I and an initiator solution into the emulsion at the same time, heating and stirring to react, cooling after the reaction is completed, and then adjusting the system to be neutral or acidic to obtain the functional polycarboxylic acid water reducing agent. The problems of rheological contradiction and pumping difficulty caused by the fact that the traditional technology purely depends on improvement of static viscosity are effectively solved.

The invention belongs to the technical field of medicine, and discloses a novel fumaric acid-chloroacetamide compound ZWH-01 with thyroid cancer resisting activity and a preparation method thereof.The compound is simple in synthetic route, mild and environment-friendly in reaction condition and high in yield, has remarkable growth inhibition activity on human thyroid undifferentiated cancer cells 8505c, and has good application prospects. And moreover, the compound can inhibit the migration and invasion of 8505c cells in a concentration-dependent manner, and has a good application prospect.