Epoxy Resins & Curing Agents

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EPOTUF® Epoxy Resins & Curing Agents STRENGTHEN YOUR COATING CALCULATING MIX RATIOS PERFORMANCE WITH EPOTUF® Calculate the stoichiometric parts by weight of curing agent per 100 parts of epoxy resin (phr). Formulating coatings for marine, aerospace, industrial maintenance and flooring applications is a tough job made phr = AHEW of Curing Agent X 100 easier by using raw materials that provide tough performance. Reichhold’s EPOTUF® resins provide the epoxy EEW of Epoxy Resin coatings formulator with a broad selection of epoxy resins and curing agents. Example: EPOTUF® 37-127 epoxy resin EEW = 200 Epoxies are thermosetting resins that contain an oxirane or epoxide ring and form infusible, insoluble solids when EPOTUF® 37-601 curing agent AHEW = 85 crosslinked with amine or other types of curing agents. Curing agent selection and conditions are key factors which determine the final properties of epoxy systems. Typically curing agents crosslink epoxy resins in one of two ways: phr = 85 X 100 = 42.5 by reacting with the epoxide group to become part of the final polymer network or by acting as a catalyst to promote 200 homopolymerization of the resin. Therefore, 42.5 parts of EPOTUF® 37-601 curing agent are needed to cure 100 parts of EPOTUF® 37-127 epoxy resin for a 1:1 stoichiometric ratio. PERFORMANCE MAJOR MARKETS Calculate the AHEW of a blend of curing agents. • Excellent adhesion • Protective coatings • Low shrinkage • Construction / civil engineering AHEW of Curing Agent Blend = Total Weight of Curing Agent Blend Weight A Weight B • Excellent mechanical properties • Structural adhesives + AHEW AHEW • Excellent solvent & chemical resistance • Composites A B • Good electrical properties • Electronics / encapsulation Example: EPOTUF® 37-127 epoxy resin is being used with a curing agent blend consisting of 80 parts EPOTUF® 37-601 and 20 parts EPOTUF® 37-635. EPOTUF® EPOXY RESIN & CURING AGENT MIX RATIO To achieve the optimum performance results from an epoxy / amine curing agent system, it is important to use the EPOTUF® 37-127 epoxy resin EEW = 200 resin and curing agent in the appropriate stoichiometric mix ratio where calculations are based on the ratio of the EPOTUF® 37-601 curing agent AHEW = 85 reactive components. After testing the stoichiometric 1:1 ratio it may be necessary to vary the ratio of epoxy to amine EPOTUF® 37-635 curing agent AHEW = 74 depending on the application and desired physical properties. The table below highlights some general trends observed when excess amine or epoxy are used. AHEW of Curing Agent Blend = 100 = 83 phr = 83 X 100 = 41.5 80 20 200 + 85 74 Property Excess Amine Excess Epoxy Therefore, 41.5 parts of curing agent blend are needed to cure 100 parts of EPOTUF® 37-127 epoxy resin. Water Resistance Reduces Increases Calculate the EEW of a blend of epoxy resins. Heat Distortion Reduces Reduces EEW of Epoxy Resin Blend = Total Weight of Epoxy Resin Blend Acid Resistance Reduces Increases Weight A Weight B + Alkali Resistance No Effect No Effect EEWA EEWB Solvent Resistance Reduces Reduces Example: 90 parts of EPOTUF® 37-140 epoxy resin is being blended with 10 parts of EPOTUF® 37-051 reactive diluent Flexibility Increases Reduces to reduce the viscosity. This epoxy resin blend will be reacted with EPOTUF® 37-703 curing agent.

To calculate the stoichiometric use ratio, the following information is needed: EPOTUF® 37-140 epoxy resin EEW = 185 • Amine Hydrogen Equivalent Weight (AHEW) of curing agent EPOTUF® 37-051 epoxy resin EEW = 675 EPOTUF® 37-703 curing agent AHEW = 93 AHEW = Molecular Weight of Amine or 56,100 EEW of Epoxy Resin Blend = 100 = 200 phr = 93 X 100 = 47 # of Amine Hydrogens (Amine Value) x (Average # H’s per N) 90 10 200 + 185 675 • Epoxide Equivalent Weight (EEW) of epoxy resin Therefore, 47 parts of EPOTUF® 37-703 curing agent are needed to cure 100 parts of the epoxy resin blend. EPOXY RESINS EEW OR GARDNER COLOR VISCOSITY COMPLIANCE PRODUCT TYPE % SOLIDS SOLVENT ACID VALUE DESCRIPTION (maximum) (cps @ 25°C) INFORMATION* SUGGESTED APPLICATIONS (on solids)

Reactive Diluents

High molecular weight aliphatic polyfunctional epoxy resin Adhesives, sealants, laminates, high-solids flexible EPOTUF® 37-051 Aliphatic Polyfunctional 100 — 1 250 EEW = 675 FDA 175.105 used as a modifier, improves adhesion, imparts flexibility and toughness, extends pot life, low viscosity coatings, filament winding, potting and encapsulation

Aliphatic monofunctional epoxy diluent based on Alkyl Flooring, laminates, tooling, adhesives, water reducible EPOTUF® 37-058 Aliphatic Monofunctional 100 — 1 13 EEW = 290 FDA 175.300 Glycidyl Ether C12-C14, low viscosity, low volatility and toxicity, allows high filler levels coatings, castings, potting and encapsulation

Liquid Resins

Undiluted liquid epoxy resin based on diglycidyl ether of Bisphe- nol-F (Bis-F), used alone or as a modifier for EPOTUF® 37-140, High solids coatings, fiberglass reinforced plastics, EPOTUF® 37-138 Liquid Bis-F Resin 100 — 2 3,600 EEW = 170 FDA 175.300 improves organic acid and solvent resistance, slows gel and electrical encapsulation and laminates, adhesives, thin film set times, greatly reduced crystallization potential flooring, sealants

FDA 175.105, Standard undiluted liquid epoxy resin based on Bisphenol-A Solvent-borne and high build coatings, high pressure EPOTUF® 37-140 Liquid Bis-A Resin 100 — 1 12,000 EEW = 185 175.300, 176.170, (Bis-A), industry workhorse, good reactivity and resistance laminating, castings, adhesives, flooring, potting and 176.180, 177.2420 properties, high heat distortion temperature encapsulation

Water-borne Liquid Resin

Dispersion of liquid epoxy resin, can formulate compliant Liquid Bis-A Resin Industrial maintenance coatings, concrete floor EPOTUF® 37-143 78 Water Milky 3,000 EEW = 200 — two component water-borne epoxy coatings when cured Dispersion with EPOTUF® 37-680 and 37-685, freeze/thaw stable coatings, architectural coatings, clear wood coatings,

Diluted Resins

100% reactive Bis-A epoxy based resin diluted 20% by weight Adhesives, grouts, coating applications requiring high EPOTUF® 37-100 Aliphatic Polyfunctional 100 — 3 4,000 EEW = 220 FDA 175.105 with EPOTUF® 37-051, improves flexibility, extends pot life, solids and/or substantially improved toughness and good adhesion, medium viscosity flexibility

ANSI 118.3 when 100% reactive Bis-A / Bis-F epoxy resin blend diluted 12% by High solids or 100% solids coatings and flooring, EPOTUF® 37-108 Aliphatic Bis-A / Bis-F Blend 100 — 2 1,400 EEW = 190 cured with weight with EPOTUF® 37-058, provides better thermal and EPOTUF® 37-628 chemical resistance than Bis-A based diluted epoxies water-washable grouts, adhesives, composites

100% reactive Bis-A epoxy based resin diluted 20% by weight FDA 175.300, Adhesives, grouts, coatings, flooring, wet lay-up EPOTUF® 37-127 Aliphatic Monofunctional 100 — 1 650 EEW = 200 with EPOTUF® 37-058, excellent toughness and flexibility, 176.170, 176.180 low color and viscosity laminating, potting and encapsulation

100% reactive Bis-A epoxy based resin diluted 35% by weight Wet lay-up laminating, coatings, flooring, potting EPOTUF® 37-128 Aromatic Monofunctional 100 — 2 750 EEW = 200 — with Phenol Glycidyl Ether C8-C10, excellent penetration, high filler loading, low viscosity and encapsulation, syntactic foam

100% reactive Bis-A epoxy based resin diluted 8% by weight EPOTUF® 95-406 Aliphatic Monofunctional 100 — 1 2,600 EEW = 190 — with EPOTUF® 37-058, excellent toughness, low color, Adhesives, flooring, grouts, coatings medium viscosity

Solvent Cut Resins

Solvent cut solid Bis-A epoxy resin, high molecular weight, fast High performance coatings, structural steel primers, EPOTUF® 38-501 Type 1 75 MIBK / Xylene 3 9,700 EEW = 525 FDA 175.300 dry, excellent toughness and impact resistance, good corrosion concrete sealers and surfacers, tank linings, container and chemical resistance coatings

FDA 175.105, High performance coatings, structural steel primers, EPOTUF 38-505 Type 1 75 Xylene 3 11,000 EEW = 500 Solvent cut solid Bis-A epoxy resin, fast dry, good flexibility and concrete sealers and surfacers, tank linings, container ® 175.300,176.170, impact resistance, good corrosion and chemical resistance 176.180 coatings, flooring, marine coatings

FDA 175.105, Solvent cut solid Bis-A epoxy resin, high hydroxyl content, good adhesion, improved toughness and impact resistance, good High performance coil, can, powder coatings and EPOTUF® 38-531 Type 6 55 PM Acetate 3 8,700 EEW = 1,825 175.300, 176.170, drum linings 176.180 corrosion and chemical resistance

* For FDA applications, contact Reichhold product regulatory group for specific use limitation information. EPOXY RESINS EEW OR GARDNER COLOR VISCOSITY COMPLIANCE PRODUCT TYPE % SOLIDS SOLVENT ACID VALUE DESCRIPTION (maximum) (cps @ 25°C) INFORMATION* SUGGESTED APPLICATIONS (on solids)

Modified Resins

FDA 175.105, Modifier for epoxies, 2K urethanes and baking polyester High solids coatings, high peel strength adhesives, EPOTUF® 37-151 Flexible 100 — 5 50,000 EEW = 500 175.300, 176.170, systems to improve flexibility, adhesion and weathering, elastomeric coatings, potting and encapsulation 176.180 very fast viscosity reduction curve, elongation up to 25%

Permanently flexible epoxy resin, excellent adhesion to a High performance 1K or 2K systems for coatings and EPOTUF® 38-572 Flexible 75 Xylene 7 2,400 EEW = 660 FDA 175.300 variety of substrates, good weathering resistance, good adhesives, rail car primers, DTM coatings chemical and solvent resistance, wide recoat window

MIBK / Xylene / Urethane modified to provide improved adhesion, chemical Aerospace and structural steel primers, tank linings, EPOTUF® 95-472 Urethane 60 n-Butyl Alcohol 3 1,300 EEW = 500 — and solvent resistance including aerospace hydraulic fluids flooring, heavy duty coatings

MIBK / Xylene / Urethane modified to provide improved adhesion, chemical Aerospace and structural steel primers, tank linings, EPOTUF® 95-473 Urethane 60 Toluene / 3 900 EEW = 325 — and solvent resistance including aerospace hydraulic fluids flooring, heavy duty coatings Cyclohexanone

Elastomer modified resin that produces flexible, impact Heavy duty maintenance coatings, chemical and EPOTUF® G519-K2-70 CTBN 70 MIBK 9 7,000 EEW = 680 — resistant films when cured with conventional curing agents corrosion resistant primers, industrial flooring, railcar linings, structural adhesives, composites

Elastomer modified resin that produces flexible, impact Heavy duty maintenance coatings, chemical and EPOTUF® G293-100 CTBN 100 — 10 195,000 EEW = 340 — corrosion resistant primers, industrial flooring, resistant films when cured with conventional curing agents railcar linings, structural adhesives, composites

Solvent Cut Epoxy Esters

FDA 175.300, Good adhesion to steel, excellent toughness and abrasion Air dry primers for steel, baking primers and enamels, EPOTUF® 38-403 Epoxy Ester 50 Xylene 6 1,100 AV = 8 176.170, 176.180 resistance, good compatibility with urea resins air dry gloss topcoats, floor coatings

Good adhesion to steel, excellent toughness and abrasion Clear floor varnishes, air dry primers for steel, baking EPOTUF® 38-406 Rosin Modified 60 Mineral Spirits 8 3,700 AV = 9 FDA 175.300 primers and enamels, concrete and masonry sealers, resistance, good alkali resistance brush applied maintenance finishes

FDA 175.300 Good hardness and abrasion resistance, good resistance to Baking enamels, air dry primers, floor enamels EPOTUF® 38-411 Epoxy Ester 50 Xylene 6 700 AV = 6 alkali, detergents, water and yellowing

FDA 175.105, Good hardness and abrasion resistance, good resistance to General metal and IM applications, air dry primers for EPOTUF® 91-531 Epoxy Ester 55 Xylene 6 2,100 AV = 6 175.300, 176.170, 176.180 alkali, detergents, water and yellowing steel, brush applied maintenance finishes

Water Reducible Epoxy Esters

MIL-P-53032 Compatible with acrylic emulsions to improve corrosion Primers, topcoats for metal consumer goods, EPOTUF® 38-690 Acrylic Modified 70 2-Butoxy Ethanol 7 26,800 AV = 57 resistance, fast air or force dry applications, excellent gloss, maintenance and dip coatings, latex modifier for Primers hardness and adhesion improved corrosion resistance

FDA 175.300, Fast air or force dry primer applications, good corrosion Primers, spray, dip and flowcoat applications, baking EPOTUF® 38-692 Epoxy Ester 70 2-Butoxy Ethanol 8 12,000 AV = 47 resistance in thin films, good compatibility with inhibitive 176.170, 176.180 pigments enamels, latex modifier

HAPS free, low VOC capability, excellent adhesion to a variety Flexographic inks for exterior food packaging EPOTUF® 91-263 Acrylic Modified 70 PnP 7 50,000 AV = 59 FDA 175.300 of substrates, fast air or force dry primers, good corrosion resistance applications, primers, gloss topcoats

Water Dispersed Epoxy Esters

Pre-neutralized in HAPS free solvents, low VOC capability, High gloss enamels, concrete coatings, primers, modifier EPOTUF® 38-694 Aqueous Dispersion 40 Water / PnP / TEA Milky 2,500 — — excellent hydrolytic stability, excellent corrosion resistance, for styrene latex coatings to improve adhesion and excellent adhesion to wood, concrete and metal corrosion resistance

Pre-neutralized in HAPS free solvents, low VOC capability, bonds Acrylic Modified Non-pigmented concrete bonding primers and tie EPOTUF® 38-698 42 Water / PnP / TEA Milky 100 — — topcoat to concrete while increasing adhesion, good early Aqueous Dispersion water resistance coatings, DIY garage coating primers

* For FDA applications, contact Reichhold product regulatory group for specific use limitation information. EPOXY CURING AGENTS AMINE GARDNER RECOMMENDED GEL TIME VISCOSITY AHEW VALUE CORROSIVITY COMPLIANCE PRODUCT TYPE % SOLIDS SOLVENT COLOR USE LEVEL (min. @ 25°C, DESCRIPTION SUGGESTED APPLICATIONS (cps @ 25°C) (on solids) (mg KOH/gm, STATUS** INFORMATION*** (maximum) on solids) (phr) 100g mix)

Aliphatic Amines

EPOTUF 37-606 Adduct 100 — 5 300 85 365 45 50 C — Moderate pot life, good gloss, blush resistant films, low Adhesives, general purpose flooring, topcoat and/or ® viscosity binder for Terrazzo flooring, grouts

EPOTUF 37-611 Modified 100 — 3 7,000 189 315 100 8 C — Fast cure, good moisture and blush resistance, improves Decoupage, coatings, modifier in trowelable flooring, fast- ® resiliency and flexibility of other amines set adhesives, grouts, patching compounds, repair putties

Adhesives, castings, epoxy tooling gel coats and laminates, Mannich Good cure speed at low temperature and/or high humidity, EPOTUF® 37-614 Base 100 — 7 4,500 50 760 26 14 C — patching compounds, machinery grouts, general purpose good chemical resistance, compatible with epoxy novolacs flooring, topcoat and/or binder for Terrazzo flooring

FDA 175.300 when reacted w/approved Decorative, industrial and chemical resistant flooring, EPOTUF 37-631 Modified 100 — 6 135 33 1,040 17 13 C Fast reactivity, good mechanical properties, excellent high solids coatings, small castings, potting and ® Bis-A-Epichlorohy- chemical resistance, low viscosity drin resin encapsulation, tooling gel coats, adhesives

Good general purpose aliphatic amine, excellent adhesion to High solids industrial coatings, traffic striping, grouts, EPOTUF® 37-634 Adduct 100 — 4 1,100 75 400 40 22 C — concrete and asphalt, improves low temperature cure of other mortars, concrete patching compounds, can accelerate/ amines enhance polyamides, amidoamines and cyloaliphatics

Fast reactivity, low temperature cure down to 40°F, very low Economical high solids industrial maintenance coatings, EPOTUF® 37-635 Adduct 100 — 4 7,000 74 500 39 20 NC — concrete primers and sealers, fast-set adhesives, pavement VOC capability, excellent chemical and corrosion resistance markings

Fast cure, good moisture and blush resistance, improves EPOTUF 37-667 Modified 100 — 2 1,500 157 275 84 16 C — Decoupage, protective coatings, modifier in trowelable ® resiliency and flexibility of other amines, 1:1 mix ratio by flooring, fast-set adhesives, grouts volume with EPOTUF® 37-140

Cycloaliphatic Amines

Based on isophorone diamine intended for room temperature High solids coatings, chemical resistant flooring, hand EPOTUF® 37-601 Adduct 100* — 3 300 85 350 45 65 C — curing, excellent chemical resistance, good mechanical strength characteristics, light color, low viscosity lay-up laminating and tooling

GoodGood acid acid resistance resistance and and adhesion adhesion to to damp damp concrete, concrete, can can be be High solids coatings, chemical resistant flooring, High solids coatings, chemical resistant flooring, sec- EPOTUF® 37-607 Adduct 100* — 5 325375 85 385 45 55 C — blendedblended with with aliphatic aliphatic amines amines to to improve improve chemical chemical and/or and/or low low secondary containment, hand lay-up laminating and temperaturetemperature performance performance toolingondary containment

Good color stability, high gloss and carbamation resistance Topcoats, sealers, 100% solids industrial maintenance EPOTUF® 37-703 Modified 100* — 1 70 93 320 50 33 C — under adverse conditions of high humidity and low temperature, very low viscosity coatings, Terazzo flooring

Water-borne Polyamine Adducts

Microgel Long pot life and fast dry time when cured with EPOTUF® 37-143, Water / Concrete flooring, high gloss topcoats and enamels, EPOTUF® 37-680 Polyamine 42 Milky 70 563 80 280 — NC — low odor, good yellowing resistance, excellent elevated Adduct EGMPE temperature and freeze/thaw stability OEM machinery coatings, aircraft coatings

Microgel Excellent corrosion resistance when cured with EPOTUF® 37-143, Polyamine Water / Medium-heavy duty industrial maintenance metal primers, EPOTUF® 37-685 50 PGMME Milky 50 160 334 80 — C — low odor, <100 g/L VOC capability, high hardness, wide recoat Adduct window, good in-can coating stability, freeze/thaw stable light duty DTM coatings, concrete coatings

* Reflects approximate weight % in cured film per Method 24 / ASTM D 2369 ** C - Corrosive, NC - Non-Corrosive *** For FDA applications, contact Reichhold product regulatory group for specific use limitation information. EPOXY CURING AGENTS AMINE GARDNER RECOMMENDED GEL TIME VISCOSITY AHEW VALUE CORROSIVITY COMPLIANCE PRODUCT TYPE % SOLIDS SOLVENT COLOR USE LEVEL (min. @ 25°C, DESCRIPTION SUGGESTED APPLICATIONS (cps @ 25°C) (on solids) (mg KOH/gm, STATUS** INFORMATION*** (maximum) on solids) (phr) 100g mix)

Amidoamines

Good general purpose amidoamine, wide range of mix ratios, General purpose flooring, adhesives, wet lay-up Amide / EPOTUF® 37-620 100 — 10 550 94 425 50 120 NC — capable of high pigment loading, bonds well to damp concrete, laminating, tooling, filament winding, potting and Imidazoline resilient and impact resistant encapsulation

Modified ANSI 118.3 when Improved chemical resistance versus traditional amidoamines, Water-washable grouts and mortars, metal and concrete EPOTUF® 37-628 Amide / 100 — 10 350 76 470 40 112 C reacted with good reactivity in the presence of moisture, excellent adhesion Imidazoline EPOTUF® 37-108 to a variety of substrates primers, highly filled high build flooring, adhesives

ASTM C331 Higher reactivity than EPOTUF® 37-620, used with other curing when bonding General purpose flooring, grouts and mortars, concrete EPOTUF® 37-630 Adduct 100 — 10 1,050 65 519 35 40 C agents to adjust reactivity and mix ratio, good balance of surfacers and sealers, adhesives, wet lay-up laminating, new concrete mechanical and chemical resistance properties to old tooling, filament winding, potting and encapsulation

Better chemical resistance, blush resistance and faster FDA compliant linings, metal and concrete primers and EPOTUF® 91-442 Modified 100 — 13 6,000 141 305 75 200 NC FDA 175.300 development of physical properties compared to standard topcoats, self-leveling floor coatings, potting and amidoamines, good pigment wetting encapsulation

Polyamides

Adhesives, wet lay-up laminating, flooring, corrosion Amide / FDA 175.105, High reactivity, low crystallization potential, low exudation, EPOTUF® 37-612 100 — 10 14,750 130 340 70 135 NC and chemical resistant coatings, concrete sealers and Imidazoline 175.300 moderate viscosity grouts, castings, potting and encapsulation

Provides flexibility, long pot life and good overall properties Corrosion resistant coatings, adhesives, flooring EPOTUF® 37-618 Amide 70 Xylene 12 1,600 150 240 55 1-2 Days NC — with solid epoxy resin, fast dry, suitable for a wide variety of compounds, tank and pipe coatings, castings, potting substrates and encapsulation

High molecular weight, long pot life, excellent adhesion to Toluene / EPOTUF® 37-621 Amide 60 11 1,900 500 90 100 1-2 Days NC — steel and concrete, excellent water resistance, good impact High performance steel and concrete coatings Isopropanol resistance

Good balance of hardness and flexibility, excellent corrosion Adhesives and sealants, grouts and mortars, marine and Amide / EPOTUF® 37-625 100 — 10 37,500 120 350 55 120 NC FDA 175.300 resistance, good adhesion and impact resistance, wide mix maintenance coatings, flooring and surfacing, castings, Imidazoline ratio, medium viscosity potting and encapsulation

Corrosion and chemical resistant coatings, adhesives, Imidazoline High imidazoline content, lower viscosity and longer pot life EPOTUF® 37-640 100 — 10 12,000 100 385 55 165 NC FDA 175.300 flooring and surfacing compounds, castings, potting / Amide than EPOTUF® 37-625 and encapsulation

Aromatic Adhesives, flooring compounds, pipe and tank coatings, EPOTUF® 37-647 Amide 70 12 2,700 140 240 55 1-2 Days NC FDA 175.300 Provides good adhesion to steel and concrete, long pot life and 100 good compatibility with solid epoxy resin marine finishes, castings, potting and encapsulation

Modified No induction time, performance similar to high molecular High solids coatings for tanks and pipelines, adhesives, EPOTUF® 37-650 Amide / 100* — 12 4,750 130 230 70 120 NC FDA 175.105 Imidazoline weight traditional polyamide/solid epoxy systems, low viscosity rail car coatings, concrete primers and sealers

For more information on Reichhold’s complete line of EPOTUF® products contact your Reichhold sales representative or call the Coatings Technical Support Line at (800) 431-1920.

Reichhold World Headquarters and Technology Center P.O. Box 13582 Research Triangle Park, NC 27709 (919) 990-7500 (local) or (800) 431-1920 (toll-free) www.reichhold.com

The information herein is general information designed to assist customers in determining whether our products are suitable for their applications. Our products are intended for sale to industrial and commercial customers. We require customers to inspect and test our products before use and to satisfy themselves as to contents and suitability for their specific applications. We warrant that our products will meet our written specifications. Nothing herein shall constitute any other warranty express or implied, including any warranty of merchantability or fitness for a particular purpose, nor is any protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all proven claims is limited to replacement of our materials, and in no event shall we be liable for special, incidental, or consequential damages. Reproduction of all or any part is prohibited except by permission of authorized Reichhold personnel.