Aliphatic Polyamines Diethylenetriamine (DETA) – Aliphatic polyamine; ambient-temperature epoxy curing agent used in flooring, anticorrosion, and adhesion applications. Features high reactivity and low viscosity. Triethylenetetramine (TETA) – Polyethylene polyamine; epoxy curing agent with excellent chemical resistance, widely used in heavy-duty anticorrosion and composite materials. Tetraethylenepentamine (TEPA) – Highly reactive polyamine; used in epoxy curing, ion-exchange resins, and as a raw material for oilfield auxiliaries. Pentaethylenehexamine (PEHA) – High-amino polyamine; applied in epoxy curing, chelating agents, and water treatment chemicals. 1,6-Hexamethylenediamine (HMDA) – Aliphatic diamine; used in nylon 66, polyurethanes, and epoxy curing agents to enhance heat resistance and hardness. 1,2-Cyclohexanediamine (CHDA) – Cycloaliphatic diamine; high-temperature epoxy curing agent offering yellowing resistance, high gloss, and high mechanical strength. Isophoronediamine (IPDA) – Cycloaliphatic diamine; weather-resistant epoxy curing agent with low yellowing tendency, used in topcoats and anticorrosion coatings. Bis(4-aminocyclohexyl)methane (PACM/DACM) – Cycloaliphatic diamine; offers high heat resistance and low moisture absorption; used in epoxy, polyamide, and PU curing. 2-Methylpentamethylenediamine (MPMD) – Modified aliphatic diamine; low viscosity and low volatility; used in epoxy flooring and fast-cure systems. 3,3'-Dimethyl-4,4'-diaminodicyclohexylmethane (MACM) – Cycloaliphatic modified diamine; low viscosity and high toughness; applied in epoxy composites and LED encapsulation.   Aromatic Amines m-Phenylenediamine (m-PDA) – Aromatic diamine; used in high-temperature epoxy curing, polyimides, and aramid fiber production; offers high heat resistance. p-Phenylenediamine (p-PDA) – Aromatic diamine; used in high-temperature-resistant resins, epoxy curing, and dye intermediates. 4,4'-Diaminodiphenylmethane (DDM) – Aromatic diamine; high-temperature epoxy curing agent providing high Tg, high heat resistance, and high strength. 4,4'-Diaminodiphenylsulfone (DDS) – Highly heat-resistant aromatic amine; used in aerospace epoxy, electronic potting, and heat-resistant structural adhesives. m-Xylylenediamine (MXDA) – Aromatic-aliphatic mixed diamine; low toxicity and high adhesion; used in epoxy, nylon, and coatings. Diethyltoluenediamine (DETDA) – Aromatic diamine; PU chain extender and epoxy curing agent with fast reaction and high elasticity. 3,5-Dimethylthio-2,4-toluenediamine (DMTDA) – Low-temperature-active aromatic diamine; used in PU elastomers, adhesives, and CASE applications. 4,4'-Methylenebis(3-chloro-2,6-diethylaniline) (MCDEA) – Sterically hindered aromatic diamine; slow-reacting PU chain extender offering high resilience and abrasion resistance.   Modified Amines / Polyamidoamines Polyamide 650 – Condensate of dimer acid and polyamine; low toxicity and good toughness; general-purpose epoxy curing agent. Polyamide 651 – High-viscosity polyamide; enhances adhesion and flexibility; used in anticorrosion coatings and marine paints. Low-Molecular-Weight Polyamide Curing Agent (300#) – Fast-drying and low-volatility; used in flooring, self-leveling compounds, and adhesives. Modified Cycloaliphatic Amine Curing Agent (EH-260) – Modified IPDA type; low viscosity, weather resistance, and high gloss; used in topcoat systems. Phenalkamine (T-31) – Phenol-formaldehyde-polyamine condensate; cures at low temperature and under damp conditions; used in underground engineering and anticorrosion. Modified Phenalkamine (T-33) – High-solid, low-odor; suitable for winter construction and damp-surface curing. Mannich Base Modified Polyamine (EH-36) – High activity and water resistance; used in underwater curing and heavy-duty steel anticorrosion. Polyetheramine D230 – Polyether diamine; low viscosity and high toughness; used in epoxy flooring and lightweight composites. Polyetheramine D400 – Good flexibility and low moisture absorption; used in adhesives, composites, and decorative coatings. Polyetheramine D2000 – Long-chain flexible diamine; enhances impact resistance and toughness; used in PU and epoxy toughening. Polyetheramine T403 – Trifunctional polyether amine; high crosslinking density; used in structural adhesives and wear-resistant flooring. Polyetheramine T5000 – Ultra-flexible triamine; used in high-elasticity systems, adhesives, and elastic coatings.   Tertiary Amines / Accelerators / Functional Amines Triethanolamine (TEA) – Tertiary amine; used as neutralizer, emulsifier, cement grinding aid, and PU catalyst. Diethanolamine (DEA) – Alkanolamine; used in desulfurization, emulsification, PU chain extension, and as a pH regulator in coatings. Monoethanolamine (MEA) – Basic absorbent, neutralizer; used in metalworking fluids and as a surfactant raw material. N,N-Dimethylethanolamine (DMEA) – Tertiary amine catalyst; used in PU foaming, epoxy acceleration, and aqueous neutralization. N,N-Dimethylbenzylamine (BDMA) – Tertiary amine accelerator; used in fast epoxy curing, casting, and electronic potting. 2,4,6-Tris(dimethylaminomethyl)phenol (DMP-30) – Tertiary amine accelerator; significantly increases epoxy curing speed; suitable for low-temperature applications. Triethylenediamine (DABCO) – Tertiary amine; PU foaming catalyst and gel catalyst; used in sponge and rigid foams. N-Methylmorpholine (NMM) – Cyclic tertiary amine; used as PU catalyst, solvent, and organic synthesis base. N-Ethylmorpholine (NEM) – Basic catalyst; used in polyurethane foaming and coating auxiliaries. 1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU) – Superbase catalyst; used in epoxy, polyurethane, and resin synthesis catalysis.   Specialty Amines / Functional Monomers N-Aminoethylpiperazine (AEP) – Polyamine; used as epoxy curing agent, intermediate, lubricant, and chelating agent. Piperazine (PIP) – Cyclic diamine; used in pharmaceutical intermediates, polyurethanes, epoxy curing, and desulfurization agents. N,N'-Di-sec-butyl-p-phenylenediamine (DBPD) – Antioxidant/antiozonant amine; used in rubber, plastics, and oil products for antioxidation and anti-aging. Octyl/Dibutyl Diphenylamine Compound (ODPA/BDPA) – High-temperature antioxidant amine; used in lubricating oils, transformer oils, and industrial oils. 3-Methoxypropylamine (MOPA) – Alkoxy monoamine; low viscosity and low volatility; used in waterborne resins and epoxy auxiliaries. N-(3-Aminopropyl)imidazole (API) – Imidazole-modified amine; used in medium-temperature epoxy curing, adhesives, and copper-clad laminates. 2-Methylimidazole-Modified Amine (2MZ Curing Agent) – Imidazole adduct; used in epoxy powder coatings, electronic encapsulation, and latent curing. Quaternary Ammonium-Type Cationic Amines (1831, 1227 series) – Cationic surfactants; used as bactericides, softeners, antistatic agents, and emulsifiers. Fatty Amine Polyoxyethylene Ethers (C12-amine EO5, C18-amine EO10) – Nonionic surfactants; used in emulsification, dispersion, wetting, and pesticide adjuvants. Trioctylmethylammonium Chloride (TOMAC) – Quaternary ammonium phase-transfer catalyst; used in organic synthesis, extraction, and phase-transfer catalysis.