AROMATIC AMINE CURING AGENTS These are available in liquid and solid forms and are modified to cure epoxy resins at ambient conditions as well. Higher thermal stability and chemical resistance along with excellent mechanical properties are specific advantages of these curing agents. Atul offers a wide range of aromatic amine curing agents for various applications. Lapox® Appearance Colour Viscosity 1 @ 25°C Amine value AHEW Mixing ratio2 Recommendations – Gardner mPa∙s mg KOH/g g/eq pbw AH-657 Viscous brownish liquid Max 16 25,000 - 35,000 555 - 625 48.0 25 A modified aromatic amine curing agent with low viscosity to achieve higher glass transition temperature. AH-667 Viscous brownish liquid Max 15 1,400 - 2,000 @ 60°C – 51.0 28 A semi-solid aromatic amine curing agent based on DDM recommended for composite applications. AH-685 Dark brown liquid Max 12 1,000 - 2,000 300 - 400 95.0 50 A low viscosity modified aromatic amine recommended for battery cases and terminal sealing applications. It provides fast curing at room temperature with high chemical resistance. K-5 White to tan pastilles – – – 49.5 26 A pure aromatic amine curing agent- 4,4'-Diaminodiphenyl methane recommended to cure epoxy resins at elevated temperatures. K-41 Brown liquid Max 13 3,800 - 5,800 4.7 - 5.1 (eq/kg) 114.0 60 A low viscosity aromatic amine curing agent to be used along with curing agent K-42 for high chemical resistant industrial flooring, coatings and chemical resistant tank linings. K-42 Dark brown liquid Max 16 15,000 - 21,000 4.4 - 4.8 (eq/kg) 114.0 60 An aromatic amine curing agent with high reactivity to be used along with curing agent K-41. K-49 Brown liquid Max 13 700 - 900 4.7 - 5.0 (eq/kg) 114.0 60 A low viscosity aromatic amine curing agent with moderate reactivity recommended to achieve high chemical resistance in flooring, coatings and tank linings. K-92 Brown liquid Max 13 5,000 - 7,500 4.4 - 5.1 (eq/kg) 114.0 60 An ambient curing modified aromatic amine curing agent recommended for high chemical resistant coatings, tank linings and flooring. AH-664 Dark brown liquid Max 12 3,500 - 6,500 430 - 470 65.0 34 A liquid aromatic amine with high viscosity and low reactivity recommended to use along with an accelerator for composite applications. K-450 Dark brown liquid (solidifies upon storage) – 250 - 400 @ 40°C 430 - 450 65.0 34 A liquid aromatic amine curing agent with very low reactivity recommended to use along with an accelerator for composite applications. CURING AGENTS CURING AGENTS Lapox® Appearance Colour Viscosity 1 @ 25°C Amine value AHEW Mixing ratio2 Recommendations – Gardner mPa∙s mg KOH/g g/eq pbw ASH-10 Crystalline powder White to off-white 176 - 185 (melting point in °C) 99% (purity) – 35 An aromatic amine curing agent (4,4’-DDS) suitable to manufacture prepregs for advanced composites, printed circuit boards (PCB), powder coating and electronic moulding compounds (EMC). CAS # 80-08-0 ASH-10 FF Crystalline powder White to off-white 176 - 185 (melting point in °C) 99% (purity) – 35 An aromatic amine curing agent (sulfone) - free flowing version of ASH-10 suitable to manufacture prepregs for advanced composites, PCB, powder coating and EMC. CAS # 80-08-0 ASH-10 MIC Micronised powder White to off-white 176 - 180 (melting point in °C) 99% (purity) – 35 An aromatic amine curing agent (sulfone) - micronised version of ASH-10 for uniform dispersion in solvent free resins. The product is suitable to manufacture prepregs for advanced composites. CAS # 80-08-0 ASH-11 Crystalline powder White to brownish 167 - 175 (melting point in °C) 99% (purity) – 35 An aromatic amine curing agent (3,3’-DDS) which is more reactive than ASH-10. The product is suitable for fast curing and higher productivity. CAS # 599-61-1 ASH-11 MIC Micronised powder Off-white to yellowish brown 167 - 175 (melting point in °C) 99% (purity) – 35 An aromatic amine curing agent (sulfone) - micronised version of ASH-11 suitable for fast curing and higher productivity. CAS # 599-61-1 AH-681 Dark brown liquid Max 18 2,000 - 3,000 760 - 790 47.5 25 A modified aromatic amine curing agent recommended for high chemical resistant composite applications. AH-682 Yellowish brown liquid Max 8 50 - 150 – 46.0 24 A modified aromatic amine recommended for composites and laminating applicatons. K-5200 (AH-618) Yellow to brown liquid Max 15 100 - 300 628 - 634 – 24 A hot curing aromatic amine curing agent recommended for achieving a long pot life and high glass transition temperature. 1Brookfield viscosity 2With liquid epoxy resin of EEW:190 *Method: Colour - ASTM D1544; Viscosity - ASTM D2196; Amine value - ISO 9702 DDM based Ethyl substiuted DDM based 4,4’-DDS 3,3’-DDS 16 17
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