1. Basic Product Information

Chinese name: diethyltoluene diamine, curing agent chain extender DETDA Cas No .: 68479-98-1
English name: Diethyl toluene diamine DETDA
Product appearance: light yellow to amber transparent viscous liquid, slightly soluble in water, soluble in polar organic solvents such as alcohol, ether, ketone, etc., with good compatibility with polyether and polyester polyol
Molecular weight: 178.28
Molecular formula: C₁₁H₁₈N₂
Relative molecular mass: 178.3
Boiling point: 301.4 ° C at 760 mmHg
Steam pressure: 0.00106mmHg at 25 ° C
Flash point: 161.1 ° C Density: 1.013g / cm3

Packing: Net weight 200KG / galvanized iron barrel (16 tons in a small cabinet), 1000KG / IB barrel (18 tons in a small cabinet) or 23 tons of ISOTANK.

Similar foreign products: American AIbemarle company (Ethacure 100 brand), Swiss Lonza Group company (Lonzacure DETDA 80), German Nitroil company (PCAmine ADA l80)

The following are the product indicators produced by foreign factories:

The equivalent of diethyltoluenediamine curing agent chain extender DETDA and isocyanic acid (ie, the ratio of the relative molecular mass to the average number of reactive groups in each molecule) is about 89.1 ～ 89.5. The equivalent is approximately 44.3.
1. The typical composition quality score of the DETDA product of the American company A1bemarle (brand Ethacure100) is:
Moisture <0.08%
Dialkyl and other compounds 0.5% ～ 3%
3,5-diethyl-2,4diamine 75% ～ 81%
3,5-diethyl-2,6-diamine 18.0% ～ 20.0%

2. In Lonza's DETDA product (Lonzacure DETDA 80), the purity of 3,5-diethyldiamine is ≥97.5%, and the mass fraction of each component is:
Moisture: <0.10%
Diamine: ≤0.015%
Ethylenediamine: ≤1.0%
3,5-diethyl-2,4-diamine: 77.0% ～ 81.0%
3,5-diethyl-2,6-diamine: 18.0% ～ 22.0%

According to the above data comparison, the quality of the diethyltoluenediamine (DETDA) product produced by our factory is equivalent to the DETDA produced abroad.

2.product physical characteristics

Project data
Flash point ° C 135
Freezing point ° C -8
Boiling point ° C (lit.) 308
Density g / mL at 25 ° C (lit.) 1.02

Amine value 615-635
Moisture ≤0.1%
Viscosity (20 ℃) ​​280
Viscosity (25 ℃) 155
Other alkylamines 0.5-3.0%
Isocyanate equivalent 89.5
Epoxy equivalent 44.3
3,5-Diethyltoluene-2,4-diamine 75.0-81.0%
3,5-Diethyltoluene-2,6-diamine 18.0-20.0%

3. Product performance comparison

The product is cured in an oven at 120 ℃ for 12h, and left at room temperature for 7 days. According to the German standard DNI53504, the performance of the product is equivalent to that of the imported product:
Item Produced DETDA Imported DETDA
Tensile strength (MPa) 18.52 16.9
Elongation at break (%) 300 280
Flexural modulus (MPa) 208,5 210.8
Bending strength (MPa) 10.63 10.98

4.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.

Chain extender DETDA-standard quality checklist-COA

Essential information for product export:

Chinese name: diethyltoluene diamine
English name: Diethyl toluene diamine, DETDA
Product appearance: light yellow to amber transparent viscous liquid, slightly soluble in water, soluble in polar organic solvents such as alcohol, ether, ketone, etc., with good compatibility with polyether and polyester polyol
Cas number: 68479-98-1

Customs Code HS: 292159090
It belongs to several types of dangerous goods: it is exported as 9 types of dangerous goods.
Raw materials: Toluene diamine (TDA) and ethylene as raw materials.
Tax rebate: The current tax rebate for diethyltoluenediamine (DETDA) is 17%.
The most important indicators of the product: light yellow to amber transparent liquid, content ≥98%, moisture ≤0.1%, color number 2-8.

Packing: Net weight 200KG / galvanized iron barrel (16 tons in a small cabinet), 1000KG / IB barrel (18 tons in a small cabinet) or 23 tons of ISOTANK.