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Epoxy Resins S E L E C T I O N G U I D E DOW EP OXY RESINS AROU ND THE WORL D Dow manufactures over 80 epoxy As part of our product stewardship products around the globe — in efforts, Dow encourages its cus- North America, South America, tomers and potential users of Dow Europe, and Asia. With our strong products to review their applications raw materials position, strategically from the standpoint of human health located global facilities, and strin- and environmental quality. To help gent quality control standards, our ensure that Dow products are not customers can be assured that they used in ways for which they are not will receive a consistent supply of intended or tested, Dow personnel high-quality epoxy products. will assist customers in dealing with Additionally, our staff of technical ecological and product safety consid- service and development scientists erations. provide in-depth customer assist- Dow product literature, including ance and ongoing product research material safety data sheets, should and development. be consulted prior to using any Dow product. These may be obtained from your Dow representative or by calling 1-800-441-4369. F LEXIBLE EPOX Y RES IN S Viscosity Products EEW (cps @ 25°C) Color1 Comments D.E.R.* 732 310-330 55-75 60 Max. 2 Liquid resin of polyglycol-epichlorohydrin; viscosity reducer for standard resins D.E.R. 736 175-205 30-60 125 Max.2 Liquid resin of polyglycol-epichlorohydrin D.E.R. 755 260-300 1,000-2,000 3 Max. 50/50 blend of diglycidyl ethers of bisphenol A and polyglycol; for high-solids coatings, encapsulation, and adhesives 1 Gardner. 2 APHA. *Trademark of The Dow Chemical Company. 1 EP OXY N OVOL AC RESIN S Viscosity Products EEW (cps @ 25°C) Color4 Solvent/%NV Comments D.E.N.* 431 172-179 1,100-1,700 2 3 Max. 100 As a coating additive, it increases chemical resistance and improves ele- vated-temperature performance; widely used for structural applications D.E.N. 438 176-181 31,000-40,0002 2 Max. 100 Good elevated-temperature performance; increased chemical resistance; for coatings and electrical/structural applications D.E.N. 438-A85 176-1811 500-1,200 2 Max. Acetone/84-86 Solution of D.E.N. 438 resin 2 D.E.N. 438-EK85 176-1811 600-1,600 2 Max. MEK/84-86 Solution of D.E.N. 438 resin D.E.N. 438-MAK80 176-1811 600-1,200 2 Max. Methyl n-amyl ketone/78-81 Phenol-formaldehyde epoxy novolac D.E.N. 438-MK75 176-1811 200-600 2 Max. MIBK/74-76 Solution of D.E.N. 438 resin D.E.N. 439 191-210 15,000-35,0003 3 Max. 100 Semisolid; preparation of tacky pre-preg with little or no B-staging; reduced flow in pre-pregs; for electrical/structural applications 1 Based on solids. 2 @ 52°C. 3 Melt viscosity @ 71°C. 4 Gardner. The multifunctional D.E.N. epoxy novolacs have greater heat and chemical resistance than bisphenol A-derived resins when cured with appropriate hardeners. *Trademark of The Dow Chemical Company. EPOXY NOVOL AC R E S I N S — continued Viscosity Products EEW (cps @ 25°C) Color2 Solvent/%NV Comments D.E.N. 439-EK85 191-2101 4,000-10,000 3 Max. MEK/85 Solution of D.E.N. 439 resin D.E.R. 354 158-175 3,000-5,500 4 Max. — Standard bisphenol F epoxy resin; excellent resistance to chemical attack; ideal for use in tank linings and secondar y containment coatings; can be used for high- performance 100%-solids coating applications D.E.R. 354LV 160-170 2,000-3,000 3 Max. — Lowest-viscosity bisphenol F epoxy resin; excellent resistance to chemical attack; ideal for use in tank linings and secondary containment coatings; can be used for high- 3 performance 100%-solids coating applications 1 Based on solids. 2 Gardner. HALOGENA TED RESINS Viscosity Products EEW1 (cps @ 25°C) Color2 SP (°C) %NV/Bromine%3 Comments D.E.R. 532-A80 400-418 500-2,000 2 Max. — 79-81/18.5-20.5 In acetone; moisture and chemical resistant; offers higher glass transition temperatures in fire-retardant electrical laminates D.E.R. 538-A80 465-495 800-2,800 4 Max. — 79-81/21-23 Brominated resin in acetone D.E.R. 542 305-355 Semisolid 12 Max. 52-62 99-100/44-49 For electrical laminates, maximum bromide content is needed to off-set large ratios of hardeners; can be blended with conventional epoxy resins 4 for fire-retardant coatings D.E.R. 592-A80 345-375 1,000-3,000 13 Max. — 79-81/16-18 Advanced brominated epoxy-isocyanate copolymer in acetone 1 Based on solids. 2 Gardner. 3 Bromine % is a reference value only, not a specification. LI QUI D EPOXY R ESI NS (BISP HENOL A TYPE) Viscosity Products EEW (cps @ 25°C) Color2 Comments D.E.R. 317 192-203 16,000-25,000 5 Max. Bisphenol A-epichlorohydrin type; fast cur e with polyamine-type curing agents; for adhesives D.E.R. 330 176-185 7,000-10,000 125 Max.3 Low viscosity, undiluted resin for potting, adhesives, composites and laminates D.E.R. 331 182-192 11,000-14,000 125 Max.3 Standard, undiluted, low-molecular-weight resin; for general purposes up to 204°C; for coatings, potting, adhesives, laminates, and civil engineering applications D.E.R. 332 172-176 4,000-6,000 754 Low-equivalent-weight, high-purity diglycidyl ether of bisphenol A; for applications requiring best color and improved elevated-temperature performance 5 D.E.R. 337 230-250 400-8001 3 Max.1 Low-molecular-weight, semisolid resin; for marine/ maintenance coatings and adhesives and for coal tar formulations D.E.R. 364 190-210 4,000-7,000 2 Max. Epichlorohydrin-bisphenol A type; noncrystallizing; for high-solids/100%-solids coatings, flooring, adhesives, and civil engineering applications D.E.R. 383 176-183 9,000-10,500 125 Max.3 Liquid reaction product of epichlorohydrin and bisphenol A; extended pot life; for coatings, encapsulation, and filament winding 1 @ 70% NV in diethylene glycol monobutyl ether. 2 Gardner. 3 APHA. 4 APHA, ASTM D-1209. SOLID EPOXY RESINS ( BIS PHE NO L A TY P E) Viscosity Products EEW (cps @ 25°C) Color3 SP (°C) Comments D.E.R. 661 500-560 400-8001 1 Max. 75-85 4 For corrosion-resistant coatings, non-flame-retardant electrical laminates, pipe/drum linings, and mainte- nance/marine finishes; reduced tendency to lump in containers; high chemical resistance when modified with polyamines or polyamides for room-tempera- ture or low-bake applications D.E.R. 662 575-685 900-2,0001 1 Max. 84-94 Bisphenol A solid resin; minimizes blocking of flakes in severe summer weather; used as an additive to reduce melt viscosity and improve flow/leveling 6 D.E.R. 664 875-955 4,000-8,0001 1 Max. 100-1104 Thermally cured with aminoplast or phenol- (T-V)2 formaldehyde crosslinkers to form can/coil coatings and metal primers; for metal lithography and appliance primers; primarily in the form of vegetable oil fatty acid esters D.E.R. 667 1,600-2,000 30,000-100,0001 1 Max. 120-135 Thermally cured with aminoplast or phenol- formaldehyde crosslinkers to form can/coil coatings and metal primers 1 150°C melt viscosity, centistokes. 2 Gardner-Holdt @ 40% NV in DOWANOL* DB glycol ether. 3 Gardner. 4 Mettler softening point. *Trademark of The Dow Chemical Company. SOL ID EPOXY RESINS (BISP HENOL A T Y P E ) — continued Viscosity Products EEW (cps @ 25°C) Color3 SP (°C) Comments D.E.R. 668 2,000-3,500 2,800-4,900 1 3 Max. 130-148 Thermally cured with aminoplast or phenol- formaldehyde crosslinkers to form can/coil coatings and metal primers D.E.R. 669 3,500-5,500 4,600-14,8002 2 Max. 2 140-160 Excellent flexibility; for can/coil coatings, metal primers, wire enamels, and high-bake coatings D.E.R. 669-E 2,500-4,000 4,500-10,0002 250 Max. 4 — Bisphenol A-epichlorohydrin type; excellent flexibility; for wire enamels and high-bake coatings 1 Kinematic viscosity @ 40% NV in DOWANOL DB glycol ether. 2 Determined on 40% solids in diethylene glycol monobutyl ether, centistokes. 3 Gardner. 7 4 APHA. SOLID SOLUT ION EPOX Y RESINS (BISP HENOL A TYPE) Viscosity Products EEW1 (cps @ 25°C) Color2 Solvent/%NV Comments D.E.R. 660-B80 300-350 U-Z5 2 3 Max. Butanol/79-81 Intermediate-molecular-weight resin; high solids; chemical resistant; good adhesion, flexibility, and fast cure D.E.R. 660-MAK80 300-350 X-Z32 3 Max. Methyl amyl ketone/79-81 Epichlorohydrin-bisphenol A type resin; provides the adhesion, flexibility, and fast cure of high MW resins D.E.R. 660-PA80 300-350 1,500-4,500 1 Max. Propyl acetate/79-81 Epichlorohydrin-bisphenol A type resin D.E.R. 660-X80 300-350 3,400-15,000 3 Max. Xylene/79-81 Intermediate-molecular-weight resin; high solids; chemical resistant; good 8 adhesion flexibility; fast cur e D.E.R. 661-A75 500-550 800-2,500 2 Max. Acetone/74-76 — D.E.R. 661-A80 475-575 3,500-8,500 2 Max. Acetone/79-81 For non-flame-retardant electrical laminates and pipe coatings D.E.R. 671-EK80 425-550 4,000-9,000 3 Max. MEK/79-81 Solution of a solid epoxy resin in MEK 1 Based on solids. 2 Gardner. SOLID SOL UTI ON E POXY RE SIN S ( BI SPHENO L A T Y P E ) — continued Viscosity Products EEW1 (cps @ 25°C) Color2 Solvent/%NV Comments D.E.R. 671-MAK75 425-550 3,600-9,850 2 Max. Methyl n-amyl For ambient-cured, cor rosion- ketone/74-76 resistant coatings and general metal priming D.E.R. 671-MK75 425-550 2,200-10,000 2 Max. MIBK/74-76 For ambient-cured, cor rosion-resistant coatings and general metal priming D.E.R. 671-PM75 425-500 4,000-20,000 2 Max. DOWANOL PM/74-76 For ambient-cured, cor rosion-resistant coatings and general metal priming D.E.R. 671-PMK75 425-500 2,000-10,000 2 Max. DOWANOL PM, For ambient-cured, cor rosion-resistant MEK (70:30)/74-76 coatings and general metal priming D.E.R. 671-PMT70 425-550 Y-Z32 2 Max. DOWANOL PM, For ambient-cured, cor rosion-resistant 9 toluene (75:25)/69-71 coatings and general metal priming D.E.R. 671-PMX75 425-500 Z-Z63 5 Max. DOWANOL PM, For ambient-cured, cor rosion-resistant xylene (76:24)/74-76 coatings and general metal priming 1 Based on solids. 2 Gardner. 3 RPM 102D (Dow Test Method). SOLID SOL UTI ON EP OXY RE SIN S (BI SPHENOL A T Y P E ) — continued Viscosity Products EEW1 (cps @ 25°C) Color2 Solvent/%NV Comments D.E.R. 671-T75 425-550 2,200-10,000 2 Max. Toluene/74-76 For ambient-cured, cor rosion- resistant coatings and general metal priming D.E.R. 671-X75 425-550 6,500-12,000 2 Max. Xylene/74-76 For ambient-cured, cor rosion-resistant coatings and general metal priming D.E.R. 671-XM75 425-550 2,500-9,000 2 Max. MIBK, xylene For ambient-cured, cor rosion-resistant (65:35)/74-76 coatings and general metal priming D.E.R. 684-EK40 — U-Z2 3 Max. MEK/39-41 Ultrahigh-molecular-weight bisphenol A- epichlorohydrin lacquer resin; used in 10 thermoset or thermoplastic applications as high-flexibility coatings or adhesive primers; corrosion-resistant primers when formulated with zinc 1 Based on solids. 2 Gardner. DI LU TED EPOXY RES INS Viscosity Products EEW (cps @ 25°C) Color1 Diluent Comments D.E.R. 324 195-204 600-800 1 Max. Aliphatic glycidyl ether Epichlorohydrin-bisphenol A type; used in high-solids and decoupage coatings, tank linings, and civil engineering applications D.E.R. 325 185-206 850-2,800 125 Max.2 Aliphatic glycidyl ether Diglycidyl ether of bisphenol A; used in high- solids and decoupage coatings, tank linings, and civil engineering applications D.E.R. 353 190-200 800-1,000 2 Max. Aliphatic glycidyl ether Low-viscosity liquid resin blend of epichloro- hydrin-bisphenol A, bisphenol F, and aliphatic glycidyl ether 1 Gardner. 11 2 APHA. These resins are similar to D.E.R. 331 resin but are diluted with a reactive diluent to reduce viscosity. This permits easier handling and/or higher filler loading for cost reduction. The resins are suitable for most general purposes where use temperatures will not exceed 93°C — e.g., flooring compounds, grouts, adhesives, decoupage coatings, and high-solids coatings. Also, they are generally used with polyamine or amidoamine/polyamine hardeners. EPOXY RESINS FOR POWDER COA TINGS Melt Products EEW Viscosity1 Color2 SP (°C) Comments D.E.R. 642U 500-560 2,000-4,000 1 Max. 90-98 Bisphenol A/F resin; used with D.E.H.* 84/85 epoxy hardeners for lower-temperature curing, higher filler loading, good chemical resistance, and electrical properties D.E.R. 662 575-685 900-2,000 1 Max. 84-94 Bisphenol A solid resin; additive to reduce melt mix viscosity and improve flow/leveling D.E.R. 662UH 675-750 1,600-3,000 1 Max. 90-98 Solid resin for epoxy/polyester-hybrid and accelerated- dicyandiamide coatings D.E.R. 663U 730-820 2,000-4,000 1 Max. 92-102 Standard bisphenol A solid resin; optimum melt viscosity for extrusion; excellent flow, leveling, and gloss 12 D.E.R. 664U 875-955 4,000-8,000 1 Max. 100-110 Standard bisphenol A solid resin; slightly more flexibility and less flow/leveling than D.E.R. 663U resin D.E.R. 665U 955-1,400 6,500-40,000 1 Max. 105-125 Solid bisphenol A-epichlorohydrin epoxy resin D.E.R. 667 1,600-2,000 30,000-100,000 1 Max. 120-135 Bisphenol A solid resin; additive to increase melt viscosity D.E.R. 672U 750-850 20,000-50,000 1 Max. 110-120 Bisphenol A/F resin; used with D.E.H. 84/85 hardeners for less flow or higher melt viscosity D.E.R. 6223 650-700 1,400-2,100 1 Max. 86-96 Low-molecular-weight bisphenol A solid resin 150°C melt viscosity, centistokes. 1 Gardner. 2 *Trademark of The Dow Chemical Company. EPOXY RESI NS FOR POWDE R C O A T I N G S — continued Melt Products EEW Viscosity1 Color2 SP (°C) Comments D.E.R. 6224 675-725 1,500-2,500 1 Max. — Low-molecular-weight bisphenol A solid resin D.E.R. 6225 650-725 800-1,600 1 Max. 87-95 Modified bisphenol A solid resin; for improved flow in epoxy/polyester-hybrid applications D.E.R. 6227R2 705-775 1,600-3,300 — 93-101 Modified bisphenol A solid resin D.E.R. 6230 730-800 2,000-3,600 1003 93-101 Low-molecular-weight bisphenol A solid resin D.E.R. 6230A10 680-770 1,000-2,700 — 86-98 Modified bisphenol A solid resin D.E.R. 6327R2 705-775 1,700-3,000 — — Modified bisphenol A solid resin D.E.R. 6770 1,600-1,900 20,000-50,000 1 Max. 113-125 High-molecular-weight solid epoxy resin 1 150°C melt viscosity, centistokes. 13 2 Gardner. 3 APHA. The above resins offer the powder coating industry improved performance through greater formulating flexibility. They find utility over the entire spectrum of decorative and functional coatings. The novolac-modified resins offer a wide range of formulating latitude when used as sole binders or in combination with other resins. Crosslink density can be adjusted to give a required degree of solvent resistance or shortened gel and cure times. BISPHENOL A LIQU ID RESINS FOR WA TER BOR NE EPOX Y DI SP ERS ION S Viscosity Products EEW1 (cps @ 25°C) Color2 Solvent/%NV Comments XU 19000.02 240-260 — 4 Max. — Modified bisphenol A-epichlorohydrin liquid epoxy resin 1 Based on solids. 2 Gardner. 14 LI QUID AND SEMISOL ID EPOX Y SOL UT ION RESINS Viscosity Products EEW1 (cps @ 25°C) Color2 Solvent/%NV Comments D.E.R. 331-X95 190-205 2,000-3,000 1 Max. Xylene/94-96 Epichlorohydrin-bisphenol A epoxy resin D.E.R. 337-DA90 230-278 10,000-20,000 3 Max. Diacetone Epichlorohydrin-bisphenol A epoxy resin alcohol/89-91 D.E.R. 337-X80 230-260 500-1,200 3 Max. Xylene/79-81 Epichlorohydrin-bisphenol A type D.E.R. 337-X90 230-250 5,000-15,000 3 Max. Xylene/89-91 Bisphenol A-epichlorohydrin type 1 Based on solids. 2 Gardner. 15 CUR ING AGENTS Approx. Viscosity Products Equiv. Wt. (cps @ 25°C) Color SP(°C) Comments D.E.H. 20 20.6 6 — — DETA; low viscosity; room-temperature cure; for two- package protective coatings and civil engineering applications D.E.H. 24 24.4 20 — — TETA; for two-package protective coatings and civil engineering applications D.E.H. 26 27.1 50 — — TEPA; for two-package protective coatings requiring ambient cure D.E.H. 29 28.8 75-1601 — — Polyethylene polyamine (mixture); less blush in humid conditions; for two-package protective coatings and civil 16 engineering applications D.E.H. 39 43 10 — — Technical grade of aminoethylpiperazine; improved impact and shorter pot life D.E.H. 52 42-47 5,000-7,500 — — Amine adduct, DETA modified with liquid epoxy 1 @ 40°C. The aliphatic amine hardeners are characterized by low viscosities and the ability to cure at room temperature. The polyamines can be used in the prepara- tion of wet lay-up laminates and small castings. Properties can be varied by varying the amount of hardener used. For most properties, the optimum amount is near stoichiometric. Although these amines cure at room temperature, properties are improved by a mild post cure. Amine-cured resins are use- ful for temperatures up to 93 to 121°C. Contact with amines can cause sensitization and irritation. Thus, precautions for safe handling must be carefully observed. CURING A G E N T S — continued Approx. Viscosity Products Equiv. Wt. (cps @ 25°C) Color3 SP(°C) Comments D.E.H. 58 30 85-130 — — Amine blend, DETA modified with bisphenol A D.E.H. 82 235-2651 290-4702 1 Max. 83-90 Highest accelerated phenolic curing agent with flow modifier D.E.H. 84 240-2701 290-4702 1 Max. 83-90 Accelerated phenolic curing agent D.E.H. 85 250-2801 290-4702 1 Max. 83-90 Phenolic curing agent D.E.H. 87 370-4001 1,200-1,6002 1 Max. 96-102 Solid phenolic curing agent for increased flexibility XU 19036.00 — 140-210 — — Amber to brown liquid polyamine curing agent 1 Hydroxyl equivalent weight to be used in a stoichiometric ratio with the epoxy equivalent weight. 2 150°C melt viscosity, centistokes. 17 3 Gardner. Dow believes the information and suggestions herein to be accurate and reliable as of April 1998. However, since any assistance furnished by Dow with reference to the proper use and disposal of its products is provided without charge, and since use conditions and disposal are not within its control, Dow assumes no obligation or liability for such assist- anceand does not guarantee results from use of such products or other information herein; no warranty, express or implied, is given nor is freedom from any patent owned by Dow or others to be infer red. Information herein concerning laws and regulations is based on U.S. federal laws and regulations except when specific reference is made to those of other jurisdictions. Since use conditions and governmental regulations may differ from one location to another and may change with time, it is the Buyer’s responsibility to determine whether Dow’s products are appropriate for Buyer’s use, and to assure that Buyer’s workplace and disposal practices are in compliance with laws, regulations, ordi- nances, and other governmental enactments applicable in the jurisdiction(s) having authority over Buyer’s operations. T HE DO W CH EM I C A L CO M PANY Epoxy Products & Intermediates 2040 Dow Center Midland, Michigan 48674 For additional information in the United States and Canada, call 1-800-441-4369 or 517-832-1556 Printed in U.S.A. *Trademark of The Dow Chemical Company Form No. 296-01344-498 WC+M
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