18854-56-3

Upstream product

• 167364-39-8 1,2-dipropoxy-ethene 
• 2807-30-9 2-propoxyethanol 
• 106-94-5 propyl bromide 
• 61365-93-3 bromoacetaldehyde dipropyl acetal 
• 111-43-3 Dipropyl ether 
• 2568-96-9 2-ethyl-1,3-dioxolane 
• 212831-55-5 propoxy-acetaldehyde dipropylacetal 
• 13483-18-6 1,2-bis(chloromethoxy)ethane 
• 925-90-6 ethylmagnesium bromide 
• 3587-57-3 chloromethyl propyl ether 

Relevant academic research and scientific papers

Microemulsifying Polar Oils

The phase behavior and microstructure of C12E6/ether oil/water mixtures have been examined systematically as a function of increasing oil polarity.As the ratio of ether linkages to methylene groups of the ether oils is increased, the oils become more water soluble and more polar (less hydrophobic).When ethylene glycol dibutyl ether is replaced with the more polar ethylene glycol diethyl ether in C12E6/ether oil/water mixtures, the three-phase region shrinks and disappears: the system bypasses a tricritical point.Simultaneously, the liquid crystalline region retreats to higher surfactant concentration, and light and X-ray scattering measurements indicate that the microstructure decreases dramatically in size.According to small-angle X-ray scattering results, C12E6/ethylene glycol diethyl ether/water mixtures retain an interface between oillike and waterlike domains.However, since the ether is highly soluble in the water and interface domains, the microstructure is diffuse.

METHOD FOR PREPARING DOUBLE-SEALED-END GLYCOL ETHER

Disclosed is a method for preparing a double end capped glycol ether, the method comprising: introducing into a reactor a raw material comprising a glycol monoether and a monohydric alcohol ether, and enabling the raw material to contact and react with an acidic molecular sieve catalyst to generate a double end capped glycol ether, a reaction temperature being 50-300° C., a reaction pressure being 0.1-15 MPa, a WHSV of the glycol monoether in the raw material being 0.01-15.0 h?1, and a mole ratio of the monohydric alcohol ether to the glycol monoether in the raw material being 1-100:1. The method of the present invention enables a long single-pass lifespan of the catalyst and repeated regeneration, has a high yield and selectivity of a target product, low energy consumption during separation of the product, a high economic value of a by-product, and is flexible in production scale and application.

Preparation method for double-terminated glycol ether

The invention relates to a preparation method for double-terminated glycol ether. The preparation method comprises a step of introducing raw materials containing glycol monoether and monohydric ether alcohol into a reactor for contact and reaction with an acidic molecular sieve catalyst so as to produce double-terminated glycol ether, wherein reaction temperature is 50 to 300 DEG C, reaction pressure is 0.1 to 15 MPa, the mass space velocity of the glycol monoether in the raw materials is 0.01 to 15.0/h, and a mol ratio of monohydric ether alcohol to glycol monoether in the raw materials is 1-100: 1. The preparation method has the advantages that the catalyst has long single-pass life and can be repeatedly regenerated; the target product, i.e., double-terminated glycol ether has high yield and selectivity; energy consumption in separation of products is low; by-products have high economic value; production scale can be large or small; and application of the method is flexible.

PRODUCTION OF HYDROXY ETHER HYDROCARBONS BY LIQUID PHASE HYDROGENOLYSIS OF CYCLIC ACETALS OR CYCLIC KETALS

A liquid phase hydrogenolysis of acetal compounds such as cyclic acetals and cyclic ketals are fed to a reaction zone and reacted in the presence of a noble metal catalyst supported on a carbon or silica support to make hydroxy ether mono-hydrocarbons in high selectivity, without the necessity to use acidic co-catalysts such as phosphorus containing acids or stabilizers such as hydroquinone.