EPOXY CURING AGENTS Product Overview Guide

NORTH AMERICA EPOXY CURING AGENTS

A Robust Toolbox to Meet Diverse Formulation and End Use Requirements

With a heritage built on more than 50 continuous years in the industry, Dow is the

reliable leader in innovative epoxy product and technology solutions. Dow offers a

robust portfolio of epoxy products, including a diverse range of curing agent chemistries

and individual grades, to help meet specific formulating and application requirements.

To meet increased demand for environmentally responsible formulations, our line also

includes low emission and waterborne curing agents.

2 Dow leadership in epoxy technology is demonstrated by innovative technology, high quality products and attention to customer service. In addition to providing one of the broadest epoxy offerings today, our epoxy innovation pipeline – part of Dow’s $1.6 billion annual investment in research & development – ensures that the epoxy products you will require tomorrow are being created by Dow today.

Beyond technology development, we are also a source of technical support to help you apply our solutions effectively so customers achieve desired results. Our comprehensive service model – which combines the Dow epoxy sales organization and our R&D and Technical Service Center in Freeport, Texas – gives you access to local know-how and support and world-class technical resources. Our commitment to the epoxy industry includes adhering to the highest standards for safety in the manufacture, storage, transport, use and disposal of our products.

This guide presents a comprehensive listing of curing agents available from Dow. For assistance in choosing the right product for your formulation, or to investigate emerging innovation, please contact us. You’ll find contact information on the back of this brochure.

3 Epoxy Curing Agents

Product Type ~ AHEW Mix Ratio[1] Viscosity Gel Time[2] Description Typical Applications Name (g/eq) (phr) (mPa.s@25°C) (min.) Unmodified Aliphatic Amines D.E.H.™ 20 Diethylenetriamine 21 11 4 - 8 25 General-purpose, room temperature, Adhesives, casting and tooling, (DETA) low viscosity curing agent for civil engineering, composites, unmodified liquid epoxy resins with marine and protective coatings, a short pot-life potting and encapsulation D.E.H. 24 Triethylenetetramine 24 13 19.5 - 22.5 25 General-purpose, room temperature Adhesives, casting and tooling, (TETA) curing agent for unmodified liquid civil engineering, composites, epoxy resins with a short pot-life marine and protective coatings, potting and encapsulation

D.E.H. 26 Tetraethylenepentamine 27 15 50 - 60 26 General-purpose, room temperature Adhesives, casting and tooling, (TEPA) curing agent for unmodified liquid civil engineering, composites, epoxy resins with a short pot-life marine and protective coatings, potting and encapsulation D.E.H. 29 Polyethylene Polyamine 29 16 200 - 300 24 Complex mixture of linear, branched, Adhesives, casting and tooling, and cyclic ethylene amines that yields civil engineering, composites, higher peel strength in adhesives marine and protective coatings, where color is not a limitation potting and encapsulation D.E.H. 39 Aminoethylpiperazine 43 23 10 - 15 27 General-purpose, low viscosity curing Adhesives, casting and tooling, (AEP) agent for liquid epoxy resins with a civil engineering, composites, short pot-life marine and protective coatings, potting and encapsulation

These are typical properties only, and are not to be regarded as sales specifications 1 With D.E.R.™ 331 2 Measured in min./100g mass sample with D.E.R.™ 331 at 25°C TM Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow.

4 Product Type ~ AHEW Mix Ratio[1] Viscosity Gel Time[2] Description Typical Applications Name (g/eq) (phr) (mPa.s@25°C) (min.) Cycloaliphatic Amine Adducts D.E.H.™ 444 Adduct 93 50 160 - 220 56 - 58 Low viscosity curing agent with long Top coats, mortars, pot-life and low tendency to yellow coating systems when exposed to UV-irradiation D.E.H. 445 Adduct 105 56 370 - 570 35 Curing agent with good chemical, Industrial flooring mechanical, and early water spot resistance with very low tendency to yellow when exposed to UV-irradiation; not manufactured with phenol or nonylphenol D.E.H. 4042 Adduct 100 54 100 - 200 60 Curing agent with good acid High quality industrial floors, and solvent resistance, long sealer coats, low yellowing pot-life, excellent early water applications spot resistance, good color stability; produces light-resistant products D.E.H. 4044 Adduct 115 62 600 - 900 26 Curing agent with good acid and solvent High quality industrial floors, resistance, excellent early water sealer coats spot resistance, good color stability; produces light-resistant products Modified Cycloaliphatic Amines D.E.H. 487 Modified 93 50 170 - 270 40 - 42 Low viscosity, reactive curing agent High-filled self-leveling coating with good chemical resistance; systems, mortars, highly stressed when used above 10°C shows industrial floorings outstanding early water resistance; not manufactured with phenol or nonylphenol D.E.H. 488 Modified 93 50 280 - 380 24 - 26 Reactive curing agent with good High-filled self-leveling coating chemical resistance; when used systems, mortars, highly stressed above 10°C shows tack-free, colorfast industrial floorings surfaces; not manufactured with phenol or nonylphenol D.E.H. 530 Modified 112 60 300 - 400 40 - 45 Low viscosity curing agent with fast Self-leveling flooring, decorative tile cure at ambient temperature, good grouts, high solids coatings, concrete resistance to amine blushing, low sealers, chemical resistant tank color and good color stability linings, low yellowing applications

These are typical properties only, and are not to be regarded as sales specifications 1 With D.E.R.™ 331 2 Measured in min./100g mass sample with D.E.R.™ 331 at 25°C ®TM Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow. 5 Epoxy Curing Agents

Product Type ~ AHEW Mix Ratio[1] Viscosity Gel Time[2] Description Typical Applications Name (g/eq) (phr) (mPa.s@25°C) (min.) Modified Cycloaliphatic Amines (continued) D.E.H.™ 530 E32 Modified 112 60 400 - 600 46 Curing agent designed for ambient and Epoxy aggregate, concrete sealers, low temperature applications with low flooring, high solids coatings color; results in a blush-free product D.E.H. 534 Modified 120 65 500 - 1000 16 - 20 Rapid set, low temperature curing Industrial flooring, sealers, primers, agent for high gloss, blush-free grouts, mortars, tank lining for metal products with good mechanical, and concrete substrates, curing chemical, and water spot resistance accelerator D.E.H. 536 Modified 116 62 750 - 1250 12 - 16 Rapid set, low temperature curing Concrete sealers, self-leveling agent for applications requiring good flooring, trowelable flooring, color stability and resistance to high solids coatings blushing and water spotting D.E.H. 546 Modified 95 51 200 - 400 24 - 26 Low viscosity curing agent offering Industrial flooring, sealers, primers good corrosion protection D.E.H. 554 Modified 86 46 60 - 80 36 - 40 Low viscosity, low temperature curing Self-leveling flooring, concrete agent for applications requiring high sealers, high solids coatings gloss and good color stability D.E.H. 561 Modified 85 46 40 - 100 15 - 20 Very low viscosity curing agent for Self-leveling flooring, solvent-free applications requiring low color, and high solids coatings, injection excellent color stability, and rapid-set repair compounds, mortar binders at low temperatures for concrete patching in flexibilized systems D.E.H. 580 Modified 112 60 300 - 400 40 - 45 Low viscosity curing agent for Concrete sealers, industrial flooring, applications requiring self-leveling high solids coatings, tank linings with chemical, blushing, and water spot resistance D.E.H. 581 Modified 95 51 250 - 600 8 - 10 Low viscosity, low temperature curing Industrial flooring, sealers, agent for blush-free products with primers, tank linings, accelerator good water spot resistance and for other hardeners excellent chemical resistance to acids and solvents

6 Product Type ~ AHEW Mix Ratio[1] Viscosity Gel Time[2] Description Typical Applications Name (g/eq) (phr) (mPa.s@25°C) (min.) Modified Cycloaliphatic Amines (continued) D.E.H.™ 582 Modified 102 54 250 - 600 20 - 25 Low temperature, low color curing Industrial flooring, sealers, primers, agent for non-blushing products tank linings with good water spot resistance, excellent chemical resistance, and good light stability D.E.H. 583 Modified 95 51 250 - 600 34 - 40 Low viscosity, low temperature curing Industrial flooring, sealers and agent for products with good color and primers, tank linings light stability D.E.H. 586 Modified 86 46 30 - 60 45 Low viscosity curing agent for Casting and adhesives, concrete non-blushing products with good sealers, flooring, high solids and impact resistance and high gloss solvent free coatings D.E.H. 589 Modified 83 45 50 - 100 20 - 25 Low viscosity, low temperature Industrial flooring, sealers, primers, curing agent for blush-free products tank linings, accelerators for other with good water spot resistance and hardeners in coatings and civil excellent chemical resistance engineering applications D.E.H. 595 Modified 75 40 1000 - 1500 14 - 18 Very fast ambient and low temperature Industrial flooring, sealers, primers, curing agent for non-blushing products grouts, mortars, tank linings, with good water spot resistance, accelerators for other hardeners excellent chemical resistance, high in coatings and civil engineering gloss, and high strength applications D.E.H. 616 Modified 108 58 350 - 500 34 Low viscosity, low temperature curing Industrial flooring, sealers and agent for products with good color and primers, tank linings, low yellowing light stability applications Amidoamines D.E.H. 545 Adduct 115 62 400 - 650 39 Low viscosity curing agent specially Epoxy aggregate, solvent free or high designed for wet application areas; solids coatings, tank linings for metal provides good corrosion protection and concrete substrates, primer for dry and wet concrete substrates (recommended starting resins are D.E.R.™ 353 and D.E.R. 324 for primer applications)

7 Epoxy Curing Agents

Product Type ~ AHEW Mix Ratio[1] Viscosity Gel Time[2] Description Typical Applications Name (g/eq) (phr) (mPa.s@25°C) (min.) Modified Aliphatic Amines D.E.H.™ 52 Adduct 42 - 47 24 5000 - 7500 18 Viscous, room temperature curing Adhesives, casting and tooling, civil agent that has a short pot-life and engineering, marine and protective convenient handling and mixing rates coatings, potting and encapsulation with liquid epoxy resins D.E.H. 55 Modified 40 - 42 22 1000 - 1500 11 Medium viscosity, room temperature, Adhesives, casting and tooling, civil accelerated curing agent that is good engineering, marine and protective for systems requiring low color coatings, potting and encapsulation D.E.H. 58 Modified 28 - 32 16 85 - 130 15 Room temperature, low viscosity Adhesives, casting and tooling, civil curing agent that is extremely reactive engineering, marine and protective with liquid epoxy resins coatings, potting and encapsulation D.E.H. 502 Modified 44 24 2500 - 4000 13 - 14 Viscous, low temperature curing Adhesives, laminates, flooring agent with good solvent and chemical resistance D.E.H. 505 Modified 95 51 3000 - 4000 5 - 7 Accelerates low temperature Adhesives, patch repairs, grouts cures, provides rapid development of properties, and can be used as an accelerator with other amine- based hardeners D.E.H. 508 Modified 34 18 100 - 300 12 Reactive, low viscosity curing agent Structural and general purpose with good chemical resistance, high adhesives, trowelable flooring, gel strength, and high modulus that coats, mortar, grouts, patching can be used at ambient or elevated compounds temperatures D.E.H. 512 Modified 86 46 150 - 350 8 - 10 Fast, low viscosity curing agent Fast-setting adhesives, flooring, high with good flexibility and resistance solid coatings, patching compounds, to blushing at ambient or low repair mortars, accelerator, injection temperatures and useful as an repair compounds accelerator of other amines and polyamines D.E.H. 584 Modified 86 46 30 - 60 150 Light color, moisture-insensitive curing Castings, adhesives, concrete agent with good color stability and sealers, flooring, high solid and long pot-life for high gloss, blush-free, solvent-free coatings impact-resistant coatings

8 Product Type ~ AHEW Mix Ratio[1] Viscosity Gel Time[2] Description Typical Applications Name (g/eq) (phr) (mPa.s@25°C) (min.) Modified Aliphatic Amines (continued) D.E.H. 585 Modified 91 49 150 - 250 75 - 80 Light color, moisture-insensitive curing Protective coatings, castings, agent with good color stability and adhesives, concrete sealers, flooring, long pot-life for high gloss, blush-free, high solids and solvent-free coatings, impact-resistant coatings table or bar toppings D.E.H. 598B Modified 75 40 50 - 200 14 - 18 Rapid-set, low temperature curing Concrete patching compounds, agent with good water spot and grouts, mortars, crack injection chemical resistance for high gloss, resins, industrial flooring, tank linings, blush-free, high strength coatings sealers and primers Low Emission Curing Agents D.E.H. ™ 613 Mannich Base 90 48 900 – 1300 8 Accelerated Mannich-based reaction Water-resistant and chemical-resistant product of an aromatic amine with low for civil engineering applications temperature cure D.E.H. 614 Mannich Base 85 46 450 – 750 13 Mannich-based reaction product Water-resistant and chemical-resistant of an aromatic amine with low for civil engineering applications temperature cure D.E.H. 615 Mannich Base 75 40 400 - 500 15 Mannich-based reaction product Water-resistant and chemical-resistant of an aromatic amine with low for civil engineering applications temperature cure D.E.H. 622 Modified Cycloaliphatic 60 32 490 – 690 5 Low temperature cure; not Chemical anchor systems Amine manufactured with nonylphenol and adhesives D.E.H. 2720 Modified Cycloaliphatic 190 102 3000 – 4200 9 Low temperature cure, good Mortars, tooling and adhesives Polyamine adhesion on mineral substrates; not manufactured with benzyl alcohol or alkyl phenol D.E.H. 4909 Modified Polyamine 83 45 180 – 280 41 Low temperature cure; not Primers for concrete and civil manufactured with nonylphenol engineering applications D.E.H. 4912 Modified Polyamine 84 45 280 - 480 34 Low temperature cure, excellent High filled mortars and wetting of concrete; not manufactured concrete primers with alkyl phenol

9 Epoxy Curing Agents

Product Type ~ AHEW Mix Ratio[1] Viscosity Gel Time[2] Description Typical Applications Name (g/eq) (phr) (mPa.s@25°C) (min.) Waterborne Curing Agents D.E.H. 800 Polyamine adduct-based 300 161 7500 ± 2500 120 No solvents, very low odor and Coatings on concrete substrates and curing agent, dissolved fast drying; supplied at 50% solids cement-based systems in water in water D.E.H. 802 Polyamine adduct-based 300 161 5000 ± 2000 110 No solvents, very low odor and Coatings on concrete substrates and curing agent, dissolved fast drying; supplied at 50% solids cement-based systems with special in water in water rheology profile, making it ideal for roller applications D.E.H. 804 Polyamine adduct-based 175 94 8000 ± 3000 50 No solvents, very low odor and Self-leveling flooring and mortars curing agent, dissolved fast drying; supplied at 70% solids in water in water

Product Type ~ HEW (g/ eq) Melt Viscosity Softening Description Typical Applications (mPa.s@150°C) Point (°C) Phenolics D.E.H.™ 84 Phenolic 240 - 270 290 - 470 83 - 90 Curing agent based on an unmodified Decorative or protective solid reaction product of liquid epoxy powder coatings resin and bisphenol A containing about 2% of a curing accelerator D.E.H. 85 Phenolic 250 - 280 290 - 470 83 - 90 Curing agent based on an unmodified Decorative or protective solid reaction product of liquid epoxy powder coatings resin and bisphenol A D.E.H. 87 Phenolic 370 - 400 1200 - 1600 96 - 102 Higher molecular weight curing agent Decorative or protective based on an unmodified solid reaction powder coatings product of liquid epoxy resin and bisphenol A

10 11 Product Stewardship

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NOTICE: No freedom from infringement of any patent owned by Dow or others is to be inferred. Because use conditions and applicable laws may differ from one location to another and may change with time, Customer is responsible for determining whether products and the information in this document are appropriate for Customer’s use and for ensuring that Customer’s workplace and disposal practices are in compliance with applicable laws and other government enactments. The product shown in this literature may not be available for sale and/or available in all geographies where Dow is represented. The claims made may not have been approved for use in all countries. Dow assumes no obligation or liability for the information in this document. References to “Dow” or the “Company” mean The Dow Chemical Company and its consolidated subsidiaries unless otherwise expressly noted. NO WARRANTIES ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.

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