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86 results about "Diethylene glycol diethyl ether" patented technology

Diethylene glycol diethyl ether is an organic solvent with a high boiling point.

Aqueous film-forming foam extinguishing agent special for fire extinguishing bullet and throwing type fire extinguisher

The invention provides an aqueous film-forming foam extinguishing agent special for a fire extinguishing bullet and a throwing type fire extinguisher. The aqueous film-forming foam extinguishing agent has the advantages of being small in additive amount, rapid in fire extinguishing, good in recrudescence resisting effect, environmentally friendly, efficient and the like. The aqueous film-forming foam extinguishing agent comprises, by weight, 8 percent to 12 percent of main foaming agents, 8 percent to 20 percent of auxiliary foaming agents, two percent to 10 percent of antifreeze agents, 12 percent to 22 percent of cosolvents, 0.1 percent to one percent of stabilizers, 8 percent to 20 percent of fire retardants, two percent to five percent of burning-resistance agents and the balance water. The main foaming agents are selected from F1157N, F1203 and F1460, the auxiliary foaming agents are selected from lauryl sodium sulfate, ammonium lauryl sulfate, alkyl glycoside, dodecyl dimethyl betaine and cocamidopropyl betaine. The antifreeze agents are selected from ethylene glycol, glycerol and the like. The cosolvents are selected from dodecanol, n-butyl alcohol and diethylene glycol diethyl ether. The stabilizing agents are selected from xanthan gum, Arabic gum, guar gum and sodium alginate tech grade. The fire retardants are selected from ammonium polyphosphate and ammonium dihydrogen phosphate.
Owner:ANHUI TIANYUAN FIRE PROTECTION TECH

Method for preparing asphalt cleaners capable of effectively removing residual asphalt

The invention provides a method for preparing asphalt cleaners capable of effectively removing residual asphalt. The method includes adding, by weight, 5-10 parts of water into a container at first, then sequentially adding, by weight, 60-80 parts of surfactants and 30-50 parts of petroleum ether into the container and stirring the water, the surfactants and the petroleum ether for 3-5 min to obtain preliminary mixed liquid; sequentially adding, by weight, 15-32 parts of modified coconut acid diethanolamide and 9-12 parts of isopropyl alcohol into the preliminary mixed liquid and mechanically stirring the modified coconut acid diethanolamide, the isopropyl alcohol and the preliminary mixed liquid for 10-20 min to obtain mixed liquid; adding, by weight, 20-30 parts of diethylene glycol diethyl ether into the mixed liquid, uniformly mixing the diethylene glycol diethyl ether and the mixed liquid with each other, then sequentially adding, by weight, 6-15 parts of trichlorethene and 1-4 parts of potassium pyrophosphate into the mixed liquid and manually stirring the diethylene glycol diethyl ether, the mixed liquid, the trichlorethene and the potassium pyrophosphate to obtain the asphalt cleaners. The method has the advantages that good cleaning effects can be realized by the asphalt cleaners, the asphalt cleaners are high in utilization rate, low in cost and little in environmental pollution, and processes for preparing the asphalt cleaners are simple.
Owner:TIANJIN KANGYUAN ENG MACHINERY

Conductive silver paste and preparation method thereof

The invention discloses a conductive silver paste and a preparation method thereof, wherein the conductive silver paste comprises the following components and respective percentages: silver powder of45-80 percent, an organic carrier of 15-50 percent, an activated thixotropic agent of 0.6-3.5 percent, and an auxiliary agent of 0.4-2.0 percent; the organic carrier comprises the following componentsand respective percentages: an organic resin of 10-20 percent, and an organic solvent of 80-90 percent; and the organic solvent is selected from diethylene glycol, dibasic acid Ester (DBE), diethylene glycol diethyl ether acetate, and dibutyl phthalate. The invention combines the preparation of the organic binder phase and the organic carrier, which shortens the production cycle and improves theproduction efficiency. The invention is capable of avoiding the loss of activity due to improper dispersion of the thixotropic agent and increasing the thixotropic index of the conductive silver pasteby separately dispersing the thixotropic agent and the organic resin in the organic solvent, and capable of fully exerting the thixotropic properties by grinding the commercially available polyamidewax in a grinder to obtain polyamide wax powder having a smaller particle size.
Owner:湖南省国银新材料有限公司

Preparation method for weak-base arylamine diazonium salt and method for preparing tertiary amine weak-base arylamine azo dye by weak-base arylamine diazonium salt

The invention relates to a preparation method for weak-base arylamine diazonium salt and a method for preparing tertiary amine weak-base arylamine azo dye by the weak-base arylamine diazonium salt, and belongs to the technical field of clean production of the dye. The preparation method comprises the following steps of adding naphthalenesulfonic acid and alkyl nitrite to weak-base arylamine solution in sequence, reacting for 20min to 60min at 0 DEG C to 25 DEG C, and performing solid-liquid separation to obtain weak-base arylamine diazonium salt solid; solvent for dissolving weak-base arylamine is tetrahydrofuran, 1,4-dioxane, glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether or ethyl acetate. The preparation method for the weak-base arylamine diazonium salt and the method for preparing the tertiary amine weak-base arylamine azo dye by the weak-base arylamine diazonium salt, disclosed by the invention, have the beneficial effects that no sulfuric acid is used in a process of preparing the weak-base arylamine diazonium salt and the tertiary amine weak-base arylamine azo dye, therefore the environment is protected.
Owner:DALIAN UNIV OF TECH

Environment-friendly type corrosion resistant composition for normal temperature descaling of metal materials

The invention discloses an environment-friendly type corrosion resistant composition for normal temperature descaling of metal materials. The environment-friendly type corrosion resistant compositioncan rapidly remove rust on the surfaces of the metal materials, and forms dual-layer protecting films on the surfaces of the metal materials to prevent secondary rusting. The environment-friendly typecorrosion resistant composition is prepared from the following components in percentage by mass: 12-20% of an acid agent, 3-8% of a reducing agent, 1-5% of an accelerant, 3-8% of a penetrating agent,1-2% of a non-ionic surface active agent, and the balance of pure water, wherein the acid agent is an unsaturated organic acid and chemical compound thereof; and the penetrating agent is prepared from the following components by molar ratio: 2-4 of dipropylene glycol, 2-4 of diethylene glycol diethyl ether, and 3-5 of diethylene glycol butyl ether. The environment-friendly type corrosion resistant composition is a synthetical composition capable of simultaneously oil removing, descaling and anti-rust-passivating, contains no inorganic phosphorus or organic phosphorus and other toxic heavy metals, in the treatment process, needs no heating, does not generate acid mist and harmful substances and cannot pollute the environment, and has excellent adhesive force with subsequent coatings.
Owner:GUANGZHOU HONGSHUO ENVIRONMENTAL TECH

Preparation method for 9,9-bis[6-(2-hydroxyethoxy)naphthyl]fluorene with high purity and high bulk density

The invention provides a preparation method for 9,9-bis[6-(2-hydroxyethoxy)naphthyl]fluorene with high purity and high bulk density. The 9,9-bis[6-(2-hydroxyethoxy)naphthyl]fluorene with high purity and high bulk density is prepared by condensation of 9,9-bis(2-hydroxylnaphthyl)fluorene and ethylene carbonate under an alkaline condition with polar non-protonic solvents like N,N-dimethylacetamide,N,N-dimethylformamide, N-methylpyrrolidone, dimethylsulfoxide, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, triethylene glycol dimethyl ether, triethylene glycol diethyl ether and polyethylene glycol dimethyl (or diethyl) ether as reaction accelerators. The 9,9-bis[6-(2-hydroxyethoxy)naphthyl]fluorene has a purity (HPLC) of larger than 99.0%, a bulk density of larger than 0.4g/cubic centimeter, a loss on drying of less than 0.5% (at 120 DEG C, 30 min), and a melt absorption peak at 213 to 222 DEG C. The 9,9-bis[6-(2-hydroxyethoxy)naphthyl]fluorene has a powder X-ray diffraction peak (XRPD) spectrum which has a morphology as shown in a figure 3 of the invention and has characteristic diffraction peaks with 2theta values of 7.7 +/- 0.20, 8.8 +/- 0.20, 12.5 +/- 0.20, 14.3 +/- 0.20, 15.5 +/- 0.20, 17.7 +/- 0.20, 18.7 +/- 0.20, 19.5 +/- 0.20, 20.4 +/- 0.20, 20.9 +/- 0.20, 21.2 +/- 0.20, 22.2 +/- 0.20, 22.7 +/- 0.20, 23.1 +/- 0.20, 24.8 +/- 0.20, 25.4 +/- 0.20, 25.9 +/- 0.20 and 26.7 +/- 0.20.
Owner:JIANGSU EVER GALAXY CHEM CO LTD
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