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DMAEE CAS:1704-62-7 Usage and Manufacturing Method
Brief introduction.
Dimethyldiethanolamine is a chemical substance.
Alias: Dimethylaminoethoxyethanol
Abbreviation: DMAEE
English name: dimethyaminoethoxyethanol, dimethyl2-(2-aminoethoxy)ethanol
Molecular formula: C6H15NO2
Relative molecular weight:133.2
CAS No.:1704-62-7
Formulation.
Recipe weight:133.19
Purity percentage: ≥98.0% (GC)
Physical form: Liquid
Experimental operation.
[ 50-00-0 ] + [ 929-06-6 ] = [ 1704-62-7 ]
Phase I: 0.5 hr.
Phase II: 100 - 110 °C; 2 h.
Phase III: 120 °C; 4 h.
Synthesis To a 250 ml three-necked flask was added 63.1 g of diethyleneglycolamine (0.6 mol), 34.5 g of paraformaldehyde (1.2 mol), stirred for 30 min and 63 g of formic acid (1.2 mol, 88%) was added dropwise at a temperature of 100 to 110 °C and reacted at about 100 °C for 1 h. Distill out 30 g under reduced pressure (vacuum - 0.094 MPa, kettle temperature 80°C). The distillation ended with 90.0% product and 9.8% impurity (S-2) content. _: The liquid from step 2) was transferred to a 500 ml distillation flask and distilled under reduced pressure at a vacuum of -0.094 mpa. 62°C component was n-butanol ester exchanged down to formic acid as butanol, 121° C DMAEE component that is the product. Collected 121 ° C component 128.3g, yield 96.5%, the Uses.
DMAEE is a low odor reactive foaming catalyst, mainly used in rigid packaging foam, also used in molded flexible foam and polyether urethane flexible foam.DMAEE is also an important intermediate, used in polyurethane coatings, surfactants, mine reinforcement and many other fields. Zhongke's organic amine catalyst and curing agent series products will be put into production one after another, and the core catalyst and curing agent products will be used as the basis for the subsequent development of new materials for high value-added polyurethane and epoxy resin by precisely matching the market changes.
Integrated manufacturing method of dmae and dmaee in microtubular reactor.
A method of integrated preparation of DMAE and DMAEE in microtube reactor is disclosed, which includes the following steps in turn: pumping ethylene oxide and aqueous dimethylamine solution formed by mixing dimethylamine with water as catalyst as materials into the microtube reactor respectively, controlling the molar ratio of ethylene oxide to dimethylamine as 1~2:1; setting the reaction temperature in the microtube reactor as 60~90°C and pressure as 1.3 ±0.2 Pa, and the residence time of the material in the microtubular reactor is controlled to be 15～90s; the effluent from the microtubular reactor is an aqueous solution of DMAE and DMAEE. The method of the present invention has the advantages of high atomic economy, good reaction selectivity, mild reaction conditions, short reaction time, simple catalyst, and simple product separation.
Safety information :
Risk terminology
R21:Harmful in contact with skin.
R41:Risk of serious damage to the eyes.
Safety Terminology
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
Storage and transportation.
Should be kept sealed and stored in a dry, cool, ventilated warehouse
Packaging.
200KG/drum Storage: It is recommended to store in a dry and cool area with proper ventilation. After the original packaging, please fasten the lid as soon as possible to prevent the mixing of other substances such as moisture to affect the performance of the product. Do not inhale dust and avoid skin and mucous membrane contact. Smoking, eating and drinking are prohibited in the workplace. After work, shower and change clothes. Store contaminated clothes separately and wash them before use. Maintain good hygiene habits.
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