Physical Parameters
Diethyl toluene diamine Basic Information
English name: Diethyl toluene diamine
Synonyms: POLYLINK DETDA; Benzenediamine, ar, ar-diethyl-ar-methyl-; Diethyltoluylendiamin; ar, ar-diethyl-ar-methyl-benzenediamin; ar, ar-diethyl-ar-methylbenzenediamine; ar, ar-diethyl-ar -methyl-Benzenediamine; diethyl tolamine; Amino- (diethylamino) -toluene, isomer mixture
CAS: 68479-98-1
Formula: C11H18N2
Molecular Weight: 178.28
EINECS Number: 270-877-4
Diethyl toluene diamine(DETDA) Physical And Chemical Properties
Appearance: Light Yellow To Amber Transparent Liquid
Refractive Index: 1.581
Boiling Point: 310 ℃
Flash Point:> 140 ℃
Density: 1.022
Chroma (pt-co) ≤400
TDA content (%)≤ 0.1
Amine value (mgKOH / g) 625-635
Moisture (%) ≤ 0.1
Diethyl toluene diamine(DETDA) Export Cargo Security Data
CAS No.：68479-98-1
Tax Rate (%):17%
Hazard Class: 9
Hs:2921519090
Un:3082
Diethyl toluene diamine(DETDA) Raw Materials:
TDA Industrial, Sichuan Production
Ethylene (Et) Polymer Grade, Shanghai Production
TEA Industrial Imports
A Reagent Grade Additives
Product Name: Diethyl Methyl Benzene Diamine (Ethancure100) DETDA
Physical and chemical properties: light yellow transparent liquid, slightly soluble in water, soluble in alcohols, ethers, ketones and other polar organic solvents, and polyether, polyester polyol compatibility.
Diethyl toluene diamine Quality indicators:
Production situation:
The product yield: 80 tons / month
Shipping Port: China ShangHai
Price offer is valid: 15 days
Jincang time: 15 days (commodity inspection)
Export rights: the right to import and export company
Diethyl toluene diamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
Production Process
Diethyltoluenediamine(DETDA) Production Process
A1C13 with Zn and not as a co-catalyst products. Because the poor thermal stability of AlCl3, easy to coke at high temperatures, and decomposition release HCl, severe corrosion of the equipment. The choice is more appropriate aluminum alkyl catalyst, which use TEA, the conversion rate and reactivity are high. In this study, TEA as a synthetic catalyst.
The alkylation reaction is a multi-step reaction, accompanied by N- alkylation side reaction. Reaction temperature, reaction pressure, reaction time and amount of catalyst, the ratio of ingredients is a major factor affecting the reaction. Our crude DETDA content as the evaluation index. Comprehensive selected by orthogonal preferred process conditions: temperature 300 ;, reaction pressure 10.0 MPa, reaction time 7 H, catalyst 18.6%, (weight fraction), Et (molar ratio) of 1: 2.1.
Under these conditions, changes in the amount of catalyst, examine its impact on the synthesis, to reduce the amount of catalyst and reduce costs. When the catalyst amount is less than 15%, the product TDA content increases, the conversion rate, the yield dropped significantly and the material purified difficulties; increase the dosage, synthesis conditions improve small, Huai dosage increased by 1, DETDA improve only 5%, and the viscous material, post-processing difficulties.
We selected according to the following methods and product properties were studied.
A direct distillation method is simple, but at a high temperature, catalyst damage products, low yields, more residue.
B. adding excess alkali catalyst for the partial conversion of soluble aluminate
In water, it becomes clear two phases facilitate separation, aluminum is easily removed. But the consumption of base volume.
C. water or adding an appropriate amount of lye catalyst is converted to Al (OH) 3 floc, is difficult and the organic phase separated. Al (OH) 3 in entrainment large amounts of organic phase, suffered serious losses.
D. brine large particles Al (OH) 3 precipitates, clear two-phase separation. Add salt, increasing the density of the aqueous phase, the organic phase was reduced
Solubility in water and sediment and content of, the separation quickly. High yield, simple operation and low cost.
Selection Method D as a way to remove the catalyst, the experiment proved to be feasible.
Refined
After removal of the catalyst, in addition to crude DETDA, but also contains a variety of aromatic amine derivatives. These substances similar to density, solubility similar, the same chemical properties, separation difficult extraction, crystallization and other physical and chemical methods. DETDA boiling point 308 ℃, boiling point similar to other derivatives, we use vacuum distillation method, lower boiling point, increasing the boiling point difference. Calculated and measured equilibrium equation and calculate the equilibrium curve Mixture, we obtained a better distillation process conditions, so that the average purity of over 98%.
Performance Testing
Products cured in an oven at 120 ℃ in 12h, at room temperature for 7 days, according to the West German standard DNI53504 test product performance and imports considerably:
Project production DETDA import DETDA,
Tensile strength (MPa) 18.52 16.9
Elongation at break (%) 300 280
Flexural modulus (MPa) 208,5 210.8
Flexural strength (MPa) 10.63 10.98
Packing
Diethyltoluenediamine packing： net weight 200KG/ galvanized iron drum (a small cabinet pallet loaded 16 tons), 1000KG/IB barrels (a small cabinet loaded 18 tons or 23 tons of ISOTANK).
TDS
DIETHYL TOLUENE DIAMINE (DETDA) TDS
