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Epoxy Resins - PDF

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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.




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Printed in U.S.A.                                              *Trademark of The Dow Chemical Company                                            Form No. 296-01344-498 WC+M

								
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