Hubei Sanli Fengxiang Technology Blog

We can supply  MMA production equipment  and  MMA production technology , our production technology is simple and easy, our MMA plant is also simple to operate.  There are many ways to prepare methyl methacrylate, and today we will briefly introduce a method, the raw material is methyl acetate and formaldehyde, produced polymethyl methacrylate can be used for plexiglass and PMMA production process. This process is characterized by coal-based route, raw materials is easy to obtain, conversion rate is more than 30%, selectivity is more than 90%, according to customer to produce co-production of methyl propionate, methyl acrylate.

1,3-dioxane ring preparation process is concentrated formaldehyde and ethylene glycol with concentrated sulfuric acid as a catalyst in the reactor at 90 ~ 110 ℃ under atmospheric pressure reaction, and then distilled from the top of the distillation column 70 ~ 74 ℃ azeotrope, salted out by sodium chloride, solid alkali drying, re-distillation of the reboil and light bulb after removal of products. If you need to prepare 1,3-dioxetane, you can contact us, we have  1,3-dioxane plant , and easy to operate, safe and reliable.

Trioxane  refers to any of three isomeric organic compounds composed of a six-membered ring with three carbon atoms and three oxygen atoms, in the industry have a great effect. So what is the role of it? Trioxane can be used as an intermediate for engineering plastics POM and other chemicals, used as a disinfectant. It can also be used as a catalyst in the process of making epoxy resin, bisphenol A. Trioxane is the main raw material of daily cosmetics cold chill and depilatory agent. In the mineralization can also be copper sulfide and iron sulfide minerals inhibitors.

The traditional  1,3-dioxetane production process , get the products from paraformaldehyde and ethylene glycol reaction. Paraformaldehyde and ethylene glycol were fed into a reaction kettle at a molar ratio of 1: 1.25, and subjected to atmospheric pressure reaction at 90 to 110°C with a strong acid macroporous cation exchange resin as a catalyst. Then, 70 to 74℃ azeotropes were distilled off from the top of the distillation column, after salting out and dehydrated over anhydrous calcium chloride, followed by distillation and purification, extract 71 ~ 74℃ fractions, make the water off to 200 ppm with molecular sieve, we can get the product.

The dioxetane is the second monomer of the paraformaldehyde and is copolymerized with the proportion of the paraformaldehyde at a ratio of 95: 5. At the same time, the dioxane is also a good organic solvent and can dissolve the oil, dye, cellulose derivative, a variety of polymers, used for the production of coatings, adhesives; can also be trichloroethane stabilizer, photographic liquid, developer components. In recent years, the application of dioxane in various fields has been expanding. We have  1,3-dioxolane plant  and supply  1,3-dioxolane production process .

Alkyl Phenol are important raw materials and intermediates in the field of fine chemicals, which are obtained by alkylation of phenol and olefins. It can be used for the production of non-ionic surfactants, preservatives, mineral flotation agents, resin modifiers, textile auxiliaries and oil emulsifier. Alkylphenol production process  use the catalyst mainly ion exchange resin, boron trifluoride, activated clay. The mechanism of the alkylation of phenol with olefins is provided by the acidic catalyst H +, H + transferred to the olefin fraction, the formation of tertiary carbon ions and phenol reaction alkyl phenol, and the release of H +, and then continue with the role of olefins. In the reaction, the alkyl group enters the ortho, para position, and the ortho-alkyl group can be transferred to the para position under the action of the acidic catalyst, so the main product is the para-alkylphenol

PPC is used on its own and in a variety of end-use cleaning and degreasing formulations due to its versatility, effectiveness in reducing surface tension, and ability to improve wetting and soil removal functionality.  Propylene carbonate  can be used as VOC exempt solvent in paints and coatings as a tail solvent. PPC is a slow evaporating polar solvent. Alone or combined with other solvents, Propylene Carbonate is effective as a hard surface cleaner, polymer/resin cleaner, fiberglass, polyester and polyurethane cleaner. Propylene Carbonate can be used for derivative chemistries such as carbamate formation, hydroxyalkyation, transesterification and others. Now the demand for propylene carbonate is getting higher and higher,  PPC production equipment  is also demanding higher and higher, we can supply high-quality  PPC plant .

We can supply MMA production equipment and  MMA production technology , our production technology is simple and easy, our  MMA plant  is also simple to operate. In addition, we also understand some of the production methods, let us look at. Raw materials are methyl acetate, formaldehyde. There are some process characteristics, the raw material is derived from coal and easy-to-get; The raw material is derived from coal and easy-to-get; The conversion rate for single pass is over 30%, and the selectivity is over 90%. In the final products, the ratio between methyl propionate and methyl acrylate can be adjusted according to the customer demand.

The process is a step of using the overall process of  methyl acetate  downstream operation. The process comprises continuously feeding methanol and acetic acid into an esterification reactor, the reactor contains esterification catalyst and azeotrope acetic acid that is slightly soluble in water and forms a minimum azeotrope. The product mainly comprises methyl acetate, unreacted methanol, an azeotrope and water, and the product is distilled in a distillation column to include the overhead fraction of methyl acetate. The overhead fraction was cooled portion of the overhead is returned to the column as a primary reflux, the remaining methyl acetate can be passed through or without further purification to the downstream stream without further purification, liquid containing water, methyl acetate and an azeotrope, and a little methanol was removed from the middle of the column.

Sec-butyl acetate  domestic market in this month showed slow increase firmed. About the export market, some market participants said the recent domestic prices go up once limited even lower disk access volume.  However, the performance of the export market has been on an edge. Some factories do export business, said the recent foreign MTBE market ample supply, coupled with poor environment, the majority of low-priced foreign markets MTBE supply entering the market with oil. So sec-butyl acetate and MTBE abroad for oil, the basic terms, and lower prices of MTBE, the sec-butyl acetate hindered foreign market sales shipments. Then the domestic sec-butyl acetate, said the recent bid prices are slightly low, showing that the recent weak trend in exports.