5 results about "Synthetic monomer" patented technology

The present invention concerns a process for utilizing at least one waste stream from a production plant for aqueous polymer dispersions from at least one type of monomer M, in which reaction residues are separated from water. Said reaction residues are optionally converted into a pyrolysis oil by a pyrolysis process, which pyrolysis oil is then converted by a gasification process into synthesis gas or said separated reaction residues as such are converted into synthesis gas by a gasification process. The synthesis gas may be used for synthesis of monomers M. The present invention further concerns a production plant for aqueous polymer dispersions comprising an integrated reaction residue treatment facility which is suited for said process.

The application discloses a high-temperature-resistant and salt-resistant polymer additive for oil drilling, which is prepared by the following method: S1, carrying out nucleophilic addition on ferrocene formaldehyde and 5-amino-2-chlorobenzoic acid; S2, adding a reducing agent to the system to reduce the intermediate 1; S3, adding a catalyst to carry out aromatic nucleophilic substitution reaction under the condition of strong base and high temperature; S4, finally, carrying out esterification reaction with methacryloyl chloride; and S5, carrying out reaction on the synthetic monomer, acrylamide monomer and alkenyl monomer to obtain the polymer. The application introduces the amphiphilic macromolecular benzene ring into the main chain by reasonably controlling the process, so that the prepared additive has the advantages of less by-product, stable performance, good filtration loss reduction effect, excellent temperature resistance and salt resistance.

The application discloses an acid pH response type hydrogel co-loaded biochar loaded nano zero-valent iron material and a preparation method and application thereof, and belongs to the technical field of water pollution treatment. The nano zero-valent iron is loaded on the biochar, the dispersibility of the nano zero-valent iron is improved, and the reactivity of the nano zero-valent iron is prevented from being reduced due to agglomeration. An acid pH response type hydrogel is prepared, the biochar loaded nano zero-valent iron is coated inside under neutral and alkaline conditions, and the premature contact between the nano zero-valent iron and the water body is prevented, so that passivation is reduced and the activity is lowered. Under acid conditions, the tertiary amine group of the monomer is protonated into a positively charged quaternary ammonium salt group, strong electrostatic repulsion is generated, the polymer chain is stretched, the hydrogel shell is swelled to release the activated carbon loaded nano zero-valent iron material, the reduction effect of the activated carbon loaded nano zero-valent iron material is fully exerted, the removal of hexavalent chromium in the water body is realized, the generation of residual sludge is effectively reduced, and secondary pollution is reduced.

The application discloses a covalent organic framework material, a solid-phase microextraction probe and a preparation method and application thereof, and relates to the technical field of material preparation and component detection. The application adopts 3,3'-dihydroxydiphenylamine and 1,3,6,8-tetra(4-formaldehyde phenyl) perylene as synthetic monomers, and synthesizes Py-DHBD-COF through a solvothermal method. The synthetic material is coated on the surface of an acid-etched stainless steel wire through polyacrylonitrile glue, and a solid-phase microextraction probe modified with a Py-DHBD-COF coating is prepared. The Py-DHBD-COF coating forms hydrogen bonds, pi-pi stacking and hydrophobic interaction with psychotropic drugs through its pi conjugated system, imine bonds and hydroxyl groups, so that efficient and selective adsorption of various psychotropic drugs is realized. In combination with HPLC-MS / MS technology, the probe shows high sensitivity, a wide linear range and good precision in the detection of three kinds of psychotropic drugs.

Disclosed in the present application is a preparation method for a low-disorder expanded π-conjugated organic material. In the present application, commercial tetraaminobenzoquinone is used as a synthetic monomer, a hydrochloric acid solution is added, ultrasonic dispersion is performed, and sodium acetate is then added to obtain a turbid solution II; then, the turbid solution II is heated and stirred in flowing oxygen, and is then washed and dried; the resulting powder is put into dimethyl sulfoxide to obtain a turbid solution III; and then, the turbid solution III is subjected to aeration drying at a high temperature, and is then washed with ethanol, filtered, and dried in vacuum, so as to obtain a low-disorder expanded π-conjugated organic material. The organic material of the present application can expose more active sites and has a more open framework structure, such that the diffusion paths of potassium ions are reduced, the capacity and rate capability of TAPT can be significantly improved, and the problem of the capacity, the cycling stability and the ionic conductivity being difficult to improve at the same time when the organic electrode material is applied to a potassium-ion battery is solved. The preparation method of the present application has high cost efficiency, is simple, convenient and environment-friendly in terms of the preparation process, and is suitable for a wide range of applications. The organic material has good electrochemical performance.