31885-97-9

Usage

Uses

Used in Inks, Paints, and Coatings:
Polyethylene glycol dibutyl ether is used as a solvent in the ink, paint, and coatings industry due to its ability to dissolve a wide range of substances, enhancing the performance and quality of these products.
Used in Adhesives:
In the adhesives industry, polyethylene glycol dibutyl ether is employed as a solvent to improve the adhesive's bonding properties and overall performance.
Used in Personal Care Products:
Polyethylene glycol dibutyl ether is used as a solvent and emulsifier in personal care products, such as cosmetics and toiletries, to provide a smooth texture and improve the product's stability.
Used in Pharmaceutical Products:
In the pharmaceutical industry, polyethylene glycol dibutyl ether is utilized as a solvent and emulsifier in the formulation of various medications, contributing to the drug's solubility and absorption.
Used in Industrial Applications:
Polyethylene glycol dibutyl ether is used as a solvent in various industrial applications, including the manufacturing of cleaning agents, lubricants, and other chemical products, due to its low toxicity and low environmental impact.
Overall, polyethylene glycol dibutyl ether's versatility, low toxicity, and low environmental impact make it a valuable component in a wide range of applications across different industries.

Upstream product

• 6284-81-7 1,1,2,2-tetrabutoxy-ethane 
• 10503-96-5 1-(2-chloroethoxy)butane 
• 2372-45-4 sodium butanolate 
• 73728-51-5 1,2-dibutoxy-ethene 
• 2351-69-1 1-(chloromethoxy)butane 
• 109-69-3 n-Butyl chloride 
• 111-76-2 2-Butoxyethanol 
• 107-21-1 ethylene glycol 
• 109-65-9 1-bromo-butane 
• 111-34-2 -butyl vinyl ether 
• 71-36-3 butan-1-ol 
• 109-99-9 tetrahydrofuran 
• 6550-99-8 1-(2-bromoethoxy)butane 
• 111-44-4 3-oxa-1,5-dichloropentane 

Downstream Products

• 574-45-8 N-(diphenylmethylidene)phenylamine 

Relevant academic research and scientific papers

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.

Special features of preparing benzoaza-12-crown-4 by condensation of o-aminophenol with triethylene glycol dichloride

Preparative method of benzoaza-12-crown-4 preparation via condensation of o-aminophenol with trietylene glycol dichloride using sodium hydroxide as the template agent has been studied at elevated temperature in 2-propanol and n-butanol. Kinetics of the reaction mixture composition change in the course of the process has been investigated by GLC. Performing the reaction in 2-propanol leads to a higher yield of benzoaza-12-crown-4.

PRODUCTION OF HYDROXY ETHER HYDROCARBONS BY VAPOR PHASE HYDROGENOLYSIS OF CYCLIC ACETALS AND KETALS

A vapor phase hydrogenolysis reaction to convert cyclic acetal compounds and/or cyclic ketal compounds in the presence of hydrogen to their corresponding hydroxy ether hydrocarbon reaction products using a supported noble metal catalyst. The hydrogenolysis reaction can be carried out in the vapor phase and in the absence of a polyhydroxyl hydrocarbon co-solvent.

CATALYSTS FOR THE PRODUCTION OF HYDROXY ETHER HYDROCARBONS BY VAPOR PHASE HYDROGENOLYSIS OF CYCLIC ACETALS AND KETALS

Catalyst compositions of palladium supported on alumina or zirconium oxide supports having low or no silicon dioxide contents and having a specific surface area or modified with alkali, alkaline earth, or phosphine oxide compounds are selective in a vapor phase hydrogenolysis reaction to convert cyclic acetal compounds and/or cyclic ketal compounds in the presence of hydrogen to their corresponding hydroxy ether hydrocarbon reaction products.

NICKEL MODIFIED CATALYST FOR THE PRODUCTION OF HYDROXY ETHER HYDROCARBONS BY VAPOR PHASE HYDROGENOLYSIS OF CYCLIC ACETALS AND KETALS

Catalyst compositions of alumina supports containing palladium and nickel are selective in a vapor phase hydrogenolysis reaction to convert cyclic acetal compounds and/or cyclic ketal compounds in the presence of hydrogen to their corresponding hydroxy ether hydrocarbon reaction products.

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.

POLYOL ETHERS AND PROCESS FOR MAKING THEM

New polyol ether compounds and a process for their preparation. The process comprises reacting a polyol, a carbonyl compound, and hydrogen in the presence of hydrogenation catalyst, to provide the polyol ether. The molar ratio of polyol to carbonyl compound in the process is greater than 5:1.

POLYOL ETHERS AND PROCESS FOR MAKING THEM

New polyol ether compounds and a process for their preparation. The process comprises reacting a polyol, a carbonyl compound, and hydrogen in the presence of hydrogenation catalyst, to provide the polyol ether. The molar ratio of polyol to carbonyl compound in the process is greater than 5:1.

Process for the preparation of cyclic esters and method for purification of the same

The present invention provides a process for production of a cyclic ester by depolymerization of an aliphatic polyester. In the process, a mixture containing the aliphatic polyester and a specific polyalkylene glycol ether, which has a boiling point of 230-450° C. and a molecular weight of 150-450, is heated under normal or reduced pressure to a temperature at which depolymerization of the aliphatic polyester takes place. Then, a substantially homogeneous solution phase, consisting of the melt phase of the aliphatic polyester and the liquid phase of the polyalkylene glycol ether, is formed. Heating of the solution phase is continued to form the cyclic ester by depolymerization and distil out the cyclic ester together with the polyalkylene glycol ether, and then the cyclic ester is recovered from the distillate. The present invention also provides a process for purification of a crude cyclic ester by use of the specific polyalkylene glycol ether described above.