DETA (Diethylenetriamine)

Appearance: Colorless to pale yellow transparent liquid
Chemical formula: C₄H₁₃N₃
Molecular weight: 103.166
CAS No.: 111-40-0
Melting point: -40 °C
Boiling point: 206 °C
Density: 0.96 g/cm³
Amine value (mg KOH/g): 1300–1400
Viscosity (25 °C) mPa·s: 5–20
Mixing ratio:

YLE-128 (E-51) epoxy resin : DETA (Diethylenetriamine) = 100 g : 10–11 g (by weight)

YLE-220 (E-44) epoxy resin : DETA (Diethylenetriamine) = 100 g : 10 g (by weight)
Curing conditions: 25 °C / 3–6 hours or 60 °C / 1–2 hours

TETA (Triethylenetetramine)

Appearance: Colorless to slightly yellow viscous liquid
Chemical formula: C₆H₁₈N₄
Molecular weight: 146.234
CAS No.: 112-24-3
Melting point: 12 °C
Boiling point: 266–267 °C
Density: 0.982 g/cm³
Flash point: 135 °C (CC)
Amine value (mg KOH/g): 1100–1200
Viscosity (25 °C) mPa·s: 5–30
Mixing ratio:

YLE-128 (E-51) epoxy resin : TETA (triethylenetetramine) = 100 g : 13–14 g (by weight)

YLE-220 (E-44) epoxy resin : TETA (triethylenetetramine) = 100 g : 11–13 g (by weight)
Curing conditions: 25 °C / 3–6 hours or 60 °C / 1–2 hours

Polyether amine curing agent

Chemical name: Polyether amine; Polyether polyamine; Polyetheramine (PEA);
Aliases: Polypropylene glycol bis(2-aminopropyl ether); 2-(Aminooxy)propan-1-amine
CAS No.: 9046-10-0

Polyether amine curing agent D-230

Mixing ratio: YLE-128 (E-51) epoxy resin : D-230 = 100 g : 30 g
Curing conditions: 25 °C / 36 hours or 60 °C / 3 hours or 80 °C / 1 hour
Cured product characteristics: Colorless and transparent, high hardness, high toughness, not easily brittle. Suitable for handicrafts, nameplates, and potting applications with special requirements.

Polyether amine curing agent D-400

Mixing ratio: YLE-128 (E-51) epoxy resin : D-400 = 100 g : 50 g
Characteristics: Good toughness after curing, low viscosity, high mechanical performance of the cured product, and resistance to high-low temperature thermal shock (-35 °C to 120 °C).

Polyether amine curing agent D-2000

Mixing ratio: YLE-128 (E-51) epoxy resin : D-2000 = 40 g : 100 g
Curing conditions: 80 °C / 6–10 hours
Characteristics: D-2000 is colorless and transparent. The cured product exhibits excellent elasticity, high peel strength, colorless transparency, high toughness, not easily brittle, and strong adhesion. Suitable for potting applications with special requirements, and resistance to high-low temperature thermal shock (-40 °C to 130 °C). When combined with liquid epoxy resin, D-2000 is used for colorless and transparent applications in composites, wind power, handicrafts, and nameplates.

1,3-BAC (1,3-Bis(aminomethyl)cyclohexane) 

CAS No.: 2579-20-6

13-BAC is primarily used as an epoxy curing agent or for the preparation of modified epoxy curing agents. Compared to aromatic amine curing agents, it not only has lower viscosity and better handling properties but also yields cured products with outstanding resistance to ultraviolet light (anti-yellowing), as well as excellent weather resistance, temperature resistance, water resistance, and chemical resistance. Moreover, it cures rapidly and can be used for curing at either room temperature or low temperatures. It is widely applied in high-end outdoor floor coatings, stone adhesives, electronic potting compounds, composite materials (such as automotive parts and wind turbine blades), and in the fields of jewelry adhesives and crystal adhesives where appearance and color quality are of paramount importance.
Mixing ratio: YLE-128 (E-51) epoxy resin : 1,3-BAC = 100 g : 18–20 g
Curing conditions: 25 °C / 6–12 hours

MXDA (m-Xylylenediamine) 

CAS No.: 1477-55-0
Characteristics: m-Xylylenediamine is a high-performance and widely used epoxy resin curing agent, and also an important fine chemical intermediate. It can be used in the synthesis of polyurethanes, a range of epoxy resins, rubber additives, photosensitive plastics, pesticides, fiber finishing agents, rust inhibitors, chelating agents, lubricants, paper processing agents, and electronic chemicals. In nylon products such as MXD6 (a polycondensate of MXDA and adipic acid), and in the synthesis of functional epoxy resins, MXDA is widely utilized due to its unique structure, which imparts various excellent physical and chemical properties.
Mixing ratio: YLE-128 (E-51) epoxy resin : MXDA = 100 g : 18–20 g
Curing conditions: 50–60 °C / 3 hours + 120–150 °C / 2 hours

DETDA (Diethyltoluenediamine) 

CAS No.: 68479-98-1
Characteristics: DETDA is equivalent to Ethancure 100 and Lonza DETDA 80. It is a highly effective chain extender for polyurethane elastomers, and can also be used as a curing agent for polyurethanes and epoxy resins, as an antioxidant for epoxy resins, and in industrial oils and lubricants. Additionally, it serves as an intermediate for organic synthesis.
Mixing ratio: YLE-128 (E-51) epoxy resin : DETDA = 100 g : 25 g
Curing conditions: 100 °C / 4 hours + 150 °C / 1 hour

PACM: 4,4'-Diaminodicyclohexylmethane

CAS No.: 1761-71-3
PACM curing agent (hydrogenated MDA) has performance equivalent to Air Products' Amicure PACM and BASF's DC (i.e., Baxxodur EC330). It is used as an epoxy resin curing agent and as a curing agent for epoxy composite materials. It is also applied as a chain extender and additive in polyaspartic esters, polyamides (PA), polyurethanes (PU), and polyurea spray elastomers (SPUA). Application fields include high-grade composites, filament winding, lamination, casting, RIM, pultrusion, etc.
Mixing ratio: YLE-128 (E-51) epoxy resin : PACM = 100 g : 25–30 g
Curing conditions: 25 °C / 24 hours or 60 °C / 3 hours

DDS: 4,4'-Diaminodiphenyl sulfone

CAS No.: 80-08-0
4,4'-Diaminodiphenyl sulfone is an epoxy resin curing agent with excellent high-temperature resistance. It is used in high-temperature-resistant prepregs, high-temperature-resistant molded products (automotive molds, rail transit, aerospace, etc.), and high-temperature-resistant laminates.
Mixing ratio: YLE-128 (E-51) epoxy resin : DDS = 100 g : 25–35 g
Curing conditions: 130 °C / 2 h + 200 °C / 2 h

DDM: 4,4'-Diaminodiphenylmethane

CAS No.: 101-77-9
Liquid DDM product is a mixture containing approximately 60% 4,4'-diaminodiphenylmethane and 40% polyphenyl polymethylene polyamine, appearing as a light yellow viscous liquid at room temperature. DDM is an important chemical intermediate. In addition to being primarily used in the production of MDI and HMDI, it is also extensively used in the preparation of polyimide (PI) insulating varnishes, polyesterimide (PEI) insulating varnishes, bismaleimide resins, and other electrical insulation materials. It can also be used as a curing agent for epoxy resins and as a chain extender for polyurethane elastomers.
Mixing ratio: YLE-128 (E-51) epoxy resin : liquid DDM = 100 g : 30–35 g (flexible)
Curing conditions: 80 °C / 3–4 hours