top purity catalyst used for DOP manufacturing

dioctyl phthalate (dop)


Elevated temperatures and a catalyst accelerate the reaction rate. Depending on the catalyst used, the temperature in the second step varies from 140°C to 165°C with acid catalysts and from 200°C to 250°C with amphoteric catalysts. Variations in purity may occur depending on catalyst, reactant alcohol and process type.

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cn104072372a - preparation method of dioctyl phthalate (dop) - google

CN104072372A - Preparation method of dioctyl phthalate (DOP) - Google

The invention discloses a preparation method of dioctyl phthalate (DOP). The preparation method comprises the following steps: adding the raw materials including phthalic anhydride and superfluous isooctyl alcohol 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 ...

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wo2010050711a2 - method for preparing trioxane and polyacetal of high

WO2010050711A2 - Method for preparing trioxane and polyacetal of high

In the present invention is disclosed a method for preparing trioxane of high purity, comprising a step wherein 90 wt parts of 50‑60% formalin, 150 wt parts of dichloroethane with respect to formalin as an extraction solvent, 90 wt parts of DOP as a reaction buffering agent, and 10 wt parts of concentrated sulfuric acid as a catalyst are ...

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essential compounding chemicals used with pvc resin, primary, secondary

Essential Compounding Chemicals used with PVC Resin, Primary, Secondary

For totally smell free DOP, double distillation is used, increasing costs. Blends of such plasticizers can also be used but complicates manufacturing. However, in some case, small amounts of DBP have been used to promote Processing. DBP tends to evaporate out slowly with use, thereby stiffening the product, i.e. its permanency is low.

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dioctyl phthalate | c24h38o4

Dioctyl phthalate | C24H38O4

Di-n-octylphthalate is a colorless, odorless, oily liquid that doesn't evaporate easily. It is a man-made substance used to keep plastics soft or more flexible. This type of plastic can be used for medical tubing and blood storage bags, wire and cables, carpetback coating, floor tile, and adhesives. It is also used in cosmetics and pesticides.

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high quality liquid pvc plasticizer dop dioctyl phthalate

high quality liquid pvc plasticizer dop dioctyl phthalate

China PVC Plasticizer DOP Oil/Dioctyl Phthalate 99.5% - China PVC Plasticizer, DOP. PVC Plasticizer, DOP, Dioctyl Phthalate manufacturer / supplier in China, offering PVC Plasticizer DOP Oil/Dioctyl Phthalate 99.5%, High Purity Synthetic Pigment Iron Oxide for Concrete and Paint, Factory Price Iron Oxide Pigments for Paint and Coating and so ...

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Polyurethane (PUR and PU) is a polymer composed of organic units joined by carbamate (urethane) links. While most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available.

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plasticizers | technobell technology

Plasticizers | Technobell Technology

Plasticizers are additives that increase the plasticity or fluidity of the material to which they are added, including plastics, cement, concrete, wallboard and clay bodies. Although the same compounds are often used for both plastics and concretes, the desired effect is slightly different.

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material balances design problem cumene production background

Material Balances Design Problem Cumene Production Background

catalyst. Cumene may be used to increase the octane in gasoline, but its primary use is as a feedstock for manufacturing phenol and acetone. The plant where you are employed has been buying cumene to produce phenol. Management is considering manufacturing cumene rather than purchasing it to increase profits. Someone has

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5 most common industrial chemicals - noah technologies

5 Most Common Industrial Chemicals - Noah Technologies

Sodium Hydroxide is an inorganic compound vital to many industries. It’s used for industrial applications ranging from paper production to textile development to cleaning agent manufacturing; over 70,000,000 tons are produced each year. It is typically derived as a co-product during the manufacture of chlorine.

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