30 results about "Polyepichlorohydrin-dimethylamine" patented technology

An organic high-molecular flocculant with high flocculating effect for decoloring the printing and dyeing sewage in textile industry is prepared from epoxy chloropropane, dimethylamine and 1,6-hexyldiamine as cross-linking agent. Its preparing process is also disclosed.

A method for preparing solid polyferric sulfate, the invention belongs to the field of water treatment, the present invention adopts the following technical scheme, adopts ferrous sulfate heptahydrate, sodium chlorate and concentrated sulfuric acid to react to prepare polyferric sulfate liquid, and then by adding The viscosity is 200-10000Pa·s polyepichlorohydrin dimethylamine and white cement, and then placed and solidified to obtain polyferric sulfate solid. Due to the adoption of the above technical scheme, the present invention has the following advantages: (1) Compared with the existing production process of solid polyferric sulfate, the present invention does not need drying and heating equipment, saving 1 / 3 of the production cost; (2) Compared with polyferric sulfate and polyaluminum chloride produced by other methods, the product obtained by the invention has larger alum flowers and faster sedimentation; (3) the product obtained by the invention has good decolorization effect, total phosphorus and COD removal rate High, little impact on water pH and so on.

The invention discloses modified red soil for removing cyanobacteria. The modified red soil comprises raw materials in percentage as follows: red soil, polyepichlorohydrin-dimethylamine, polymeric ferric sulfate and water. A preparation method of the modified red soil comprises steps as follows: 1, weighing out the polyepichlorohydrin-dimethylamine, and diluting the polyepichlorohydrin-dimethylamine with water through stirring to obtain a polyepichlorohydrin-dimethylamine mother solution; 2, weighing out the polymeric ferric sulfate, and diluting the polymeric ferric sulfate with water to obtain a polymeric ferric sulfate mother solution; 3, weighing out the red soil, and dissolving the red soil after drying and grinding to obtain a red soil mother solution; 4, adding the polyepichlorohydrin-dimethylamine mother solution and the polymeric ferric sulfate mother solution to the red soil mother solution, and diluting the mixture with water to obtain the modified red soil. According to the modified red soil, the polyepichlorohydrin-dimethylamine and the polymeric ferric sulfate are used as flocculating agents, the red soil is used as a flocculation aid, and active aluminium and active iron, which are higher in content, of the red soil are used as coagulants, so that the cyanobacteria removal rate is increased, and secondary pollution cannot be caused after the cyanobacteria are removed. The preparation method is simple, low in cost and simple to operate.

The invention relates to a nitrile butadiene rubber latex coagulation technology, and belongs to the treatment of a rubber latex characterized by a used coagulation agent. The technology is characterized in that polyepichlorohydrin dimethylamine is adopted as a coagulation agent, an aqueous solution of sodium chloride is adopted as a coagulation mother liquor, and sulfuric acid is adopted as a pH adjusting agent, and the technology comprises the following steps: 1, preparing the coagulation mother liquor, 2, preparing a solution of the coagulation agent, 3, preheating a nitrile butadiene rubber latex, 4, preparing a pH adjusting solution, and 5, coagulating the latex. The nitrile butadiene rubber latex coagulation technology has the advantages of coarse colloidal particles in the coagulation process, small crushed colloid loss, less consumption of the coagulation agent, small consumption of the pH adjusting agent, low COD index in discharged wastewater, simple use, short coagulation time and low production cost. The COD content in wastewater is 266.48mg / L, and accounts of 40% of the COD content in the prior art.

The invention relates to a preparation method for polyepichlorohydrin dimethylamine cation bentonite, belonging to the technical field of environmental protection; the preparation method prepares thepolyepichlorohydrin dimethylamine / bentonite by taking sodium bentonite as the raw material, dimethylamine, epichlorohydrin and quadrol as intercalation agents and adopting a monomer insertion-interlayer polymerization method. The product is milky white solid powder, which has around100mg / g of organic loading capacity, 1.456nm of interlayer spacing, 27.89m<2> / g of specific surface and more than 90percent of decoloration rate to reactive turquoise blue. The method of the invention has the advantages of reasonable design, simple technique, low cost, etc. The prepared polyepichlorohydrin dimethylamine cation bentonite has the advantages of stable product quality and excellent adsorption performance, which has high application value in the decoloration treatment of printing and dyeing wastewater.

The invention discloses a method for preparing polyepichlorohydrin-dimethylamine-modified porous magnetic glucan microspheres. The method is characterized by including the steps that mineral ether, dichloromethane and octacosane serve as organic phases; glucan and nanometer Fe3O4 magnetic particles serve as water phases; the water phases are sprayed to the organic phases, epoxy chloropropane is added, the mixture is frozen and dried for 24 h, and the porous magnetic glucan microspheres are obtained; 64%-70% by mass of acetone, 2%-8% by mass of ethanediamine and 8%-14% by mass of polyepichlorohydrin dimethylamine are added into a reactor and dissolved, 12%-20% by mass of the porous magnetic glucan microspheres are added, the sum of all the components are 100%, and all the components are stirred and subjected to a reflux reaction for 4 h to 6 h at the constant temperature of 50 DEG C+ / -2 DEG C, cooling is carried out, then the product is washed with deionized water and acetone, subjected to solid-liquid separating and dried, and the polyepichlorohydrin-dimethylamine-modified porous magnetic glucan microspheres are obtained; an adsorbent has the quite-high adsorption capacity for bisphenol A and is repeatedly used, the cost is low, environmental protection is achieved, and meanwhile magnetism is easy to separate.

The invention relates to a steel paper, in particular to a laminated thick steel paper and a preparation method thereof, comprising the following raw materials in parts by weight: 25-30 parts of cotton fiber, 50-70 parts of phenylenediamide fiber, Mongolian 0.1-1 part of soil removal, 0.1-1 part of polyepichlorohydrin dipotassium amine, 0.1-1 part of polyethylene oxide, 0.01-0.1 part of carboxylated styrene-butadiene latex, and 0.01-0.3 part of graphene oxide. The addition of polyepichlorohydrin dimethylamine modified montmorillonite to the slurry improves the adsorption capacity of the steel paper to the flame retardant, and the addition of polyethylene oxide reduces the flocculation between fibers and improves the paper quality. uniformity, thereby improving the strength of the paper, and then using the positive charge on the polyepichlorohydrin dimethylamine, the negatively charged graphene oxide is adsorbed on the base paper, and the base paper is formed through layer-by-layer adsorption. The film layer makes the steel paper have higher flame retardancy.