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155 results about "Butyl Phthalate" patented technology

Dibutyl phthalate (C16H22O4), or DBP, is an odorless and colorless to faint yellow oily liquid; the molecular weight is 278.35 g/mol. Dibutyl phthalate is also known as di-n-butyl phthalate. Dibutyl phthalate has various industrial uses; it is used to make flexible plastics that are found in a variety of consumer products.

Preparation method of dibutyl phthalate (DBP)

The invention discloses a preparation method of dibutyl phthalate (DBP). The preparation method comprises the following steps: adding the raw materials including phthalic anhydride and superfluous butanol to a reaction kettle, adding concentrated sulfuric acid as a catalyst, controlling the temperature in the reaction kettle to be 0-150 DEG C, reacting for 16-20 hours, neutralizing the catalyst and unreacted phthalic anhydride with an alkaline solution after the reaction is completed, standing for layering and then carrying out washing with clear water several times. After alcohol-containing wastewater is collected, alcohols are recovered with a recovery tower and are reused. A lower ester layer after layering is heated to recover alcohols at reduced pressure (butanol is recovered by using a supergravity bed and is reused). After activated carbon is added for decoloration, the finished product of DBP is obtained through filter pressing by adopting a plate-and-frame filter press. The preparation method has the beneficial effects that the superfluous alcohol serves as a water-carrying agent, so that the esterification reaction is gradually carried through to the end, the technological process is simplified and the product quality is good; relative to a process of distillation in a rectifying tower, the preparation method has the advantages that the supergravity bed is used to recover butanol in the process, so that the energy consumption is effectively reduced and the process has better environment-friendly significance.
Owner:池银萍

Method for preparing samarium-doped titanium dioxide thin film

The invention discloses a method for preparing a samarium-doped titanium dioxide thin film, which comprises: mixing butyl phthalate and absolute ethanol to obtain mixed solution, and adding diethanol amine into the mixed solution to obtain solution A; uniformly mixing deionized water, diacetone and absolute ethanol to obtain solution B; adding the solution B into the solution A, regulating the pH value to 2.0 to 5.0 by using hydrochloric acid, magnetically stirring and aging to obtain gel C; soaking a cleaned substrate into the gel C, standing, lifting, coating a film and drying; and annealing the dried thin film to obtain the samarium-doped titanium dioxide thin film. In the invention, the reaction temperature is low, the production efficiency is high, the raw materials are readily available, the operation is simple, the coated film is uniform and the repeatability is high. The organic degradation catalyzing capacity of the prepared thin film under irradiation by sunlight is much higher than that of titanium dioxide thin films. By controlling the doped amount of samarium, the thin film having much higher photocatalytic effect than titanium dioxide thin films can be prepared, and the rate of methyl orange decolorization catalyzed by the thin film reaches 10 to 70 percent.
Owner:SHAANXI UNIV OF SCI & TECH

High-barrier, flame-retardant and anti-electrostatic epoxy-resin adhesive and preparation method thereof

The invention discloses a high-barrier, flame-retardant and anti-electrostatic epoxy-resin adhesive and a preparation method and application thereof. The adhesive is prepared from the following ingredients in parts by weight: 100 parts of epoxy resin, 4-10 parts of ethylene-vinyl alcohol copolymer, 50-70 parts of polyamide resin, 0-10 parts of thermoplastic polyurethane, 20-30 parts of N-methyl pyrrolidone, 0.5-2.5 parts of antistatic agent, 2-4 parts of modified nano organic montmorillonite, 1-3 parts of modified nano-silica, 14-20 parts of di-n-butyl phthalate, 3-5 parts of inorganic filler and 14-20 parts of dimethyl methyl phosphonate. The adhesive prepared by the preparation method has the advantages of good electrostatic resistance, high barrier, excellent flame retardance, high adhesive strength, good toughness, strong deflection resistance and the like, and the preparation method is scientific and reasonable and is simple in process and strong in operability, so that the industrial production is easy to realize. The adhesive can be applied to fields with relatively high requirements for electrostatic resistance, barrier and flame retardance, such as the combination of plastic fuel tank materials and PET (Polyethylene glycol Terephthalate) beer bottle materials, which is relatively popular currently.
Owner:FUZHOU UNIV

Flame retardant polysulfide sealant and its preparation process

InactiveCN102732035ASolving flammable technical problemsAccelerated corrosionOther chemical processesEpoxyChlorinated paraffins
Relating to the technical field of high polymer sealing material preparation, the invention relates to a flame retardant polysulfide sealant and its preparation process. The sealant comprises component A, a main gum material, and component B, a curing agent. The component A comprises liquid polysulfide original gum, white carbon black, activated calcium carbonate, calcium carbonate, aluminum hydroxide, antioxidant 2, 6 di-tert-butyl p-methylphenol, chlorinated paraffin, a phosphate flame retardant, a dibutyl phthalate solution of phenolic resin, epoxy resin, and other flame retardant; and then component A and component B are fully mixed to obtain the sealant. The preparation process of the invention is simple and has a unique principle. The prepared product not only has a good flame retarding effect, and at the same time has superior corrosion resistance to acid, alkali, salt, oil, and other organic solvents as well as aging resistance. With good elasticity, strength, and extensibility, the prepared polysulfide sealant does not flow under high temperature and does not fracture under low temperature. Characterized by no toxicity, no pollution, and long service life, the polysulfide sealant of the invention is convenient for construction, and has a low cost as well as a wide application range.
Owner:衡水大禹工程橡塑科技开发有限公司
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