Hardener W 300 (300 min)

    Single packs: 1.75,
    3.5, 8.75 and 26.25 kg

    Hardener W 300 (300 min)

    Hardener for Epoxy Resin L and Epoxy Casting Resin "water-clear" and "ocean blue"

    • Very low viscosity (± 300 m.Pas)
    • Fast impregnation of glass, aramid and carbon fibres
    • Also suitable for casting (up to 2 cm layer thickness in one operation)
    • High transparency
    • Largely lightfast and colourfast
    • Adhesive-free hardening (hardening from +15 °C)
    • Heat deflection temperature approx. 65 °C
    • Very good impact strength

    Epoxy resin L with hardener W 300 is a frequently used laminating, coating and casting resin system from the R&G product range. Due to its low surface tension, good adhesion and low curing shrinkage, it is also very suitable for bonding wood, metal and PS rigid foams such as Styropor®. It can be processed in all common processes such as hand lamination, pressure and vacuum impregnation as well as pressing and winding.

    Mixing ratio:
    100 : 35
    parts by weight of resin to hardener

    Pot life (135 g / 20 °C (68 °F)): approx. 300 minutes
    Curing time: approx. 24–72 h (depending on volume, layer thickness and temperature)
    If the system is processed in thin layers / laminates, the curing temperature should not be less than 22 °C (72 °F).

    Processing:
    For optimum results, resin and hardener should be dosed by weight.
    (Mixing ratio by weight is not equal to mixing ratio by volume due to different specific weights of resin and hardener.)

    After mixing the resin and hardener, the casting resin must be poured into the mould as quickly as possible to avoid an
    exothermic reaction in the mixing vessel. This is especially true when larger quantities are processed.

    The reaction heat (exothermic) generated during hardening limits the maximum quantity to be poured in one operation and the
    layer thickness.
    The higher the temperature and/or layer thickness and/or volume, the shorter the processing/gelling time.
    If a certain limit is exceeded, the resin system heats up exponentially until undesired reactions finally occur:
    The casting discolours completely or in places, from light yellow to dark brown, cracks appear and increased shrinkage occurs.
    Furthermore, a restless, wavy surface is formed. In extreme cases, the casting can "boil" completely or partially. Temperatures
    above 100 °C then occur.

    Layer thicknesses up to 5 cm for small volumes up to approx. 500 ml and layers from 1-2 cm for large volumes up to
    approx. 30 liters can be cast.

    Large moulded parts ("rivertables" etc.) with layer thicknesses of more than 20 mm should be cast in two or more work steps/
    layers one after the other at intervals of about 12 hours.

    At temperatures above 25 °C (77 °F), we strongly advise against casting larger layer thicknesses and/or larger volumes
    in one operation.

    Please order Epoxy Resin L or Epoxy Casting Resin "water-clear"/"ocean blue" separately.

    Hardener W 300, canister/ 1,75 kg

    R&G

    (required resin quantity: 5 kg Epoxy Resin L or Epoxy Casting Resin "water-clear"/"ocean blue")

    Item no.  1001494 Only 5 left in stock, more on the way  (delivery time 1-2 days)

    Add to Shopping List

    48,16 
    (Base Price 27,52 € /  kg)

    Scaled Price

    • From Qty 2:  5,0%
    • From Qty 5:  10,0%
    - +

    Hardener W 300, canister/ 3,5 kg

    R&G

    (required resin quantity: 10 kg Epoxy Resin L or Epoxy Casting Resin "water-clear"/"ocean blue")

    Item no.  1001495 Only 8 left in stock, more on the way  (delivery time 1-2 days)

    Add to Shopping List

    85,73 
    (Base Price 24,49 € /  kg)

    Scaled Price

    • From Qty 2:  5,0%
    • From Qty 5:  10,0%
    - +

    Hardener W 300, canister/ 8,75 kg

    R&G

    (required resin quantity: 25 kg Epoxy Resin L or Epoxy Casting Resin "water-clear"/"ocean blue")

    Item no.  1001496 Only 7 left in stock, more on the way  (delivery time 1-2 days)

    Add to Shopping List

    182,81 
    (Base Price 20,89 € /  kg)

    Scaled Price

    • From Qty 2:  5,0%
    • From Qty 3:  10,0%
    • From Qty 5:  15,0%
    - +

    Hardener W 300, canister/ 26,25 kg

    R&G

    (required resin quantity: 75 kg Epoxy Resin L or Epoxy Casting Resin "water-clear"/"ocean blue")

    Item no.  1001497 Only 6 left in stock, more on the way  (delivery time 1-2 days)

    Add to Shopping List

    486,63 
    (Base Price 18,54 € /  kg)

    Scaled Price

    • From Qty 2:  5,0%
    • From Qty 3:  10,0%
    • From Qty 5:  15,0%
    • From Qty 10:  20,0%
    - +

    all Prices  price incl. VAT, possibly plus shipping

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    Instructions for use
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    Hazards identification - Hardener W 300 (300 min)

    Hazard components for labelling

    Polyetherdiamine

    Signal word: Danger

    Pictograms:

    GHS05

    Hazard statements

    H314 Causes severe skin burns and eye damage.
    H412 Harmful to aquatic life with long lasting effects

    Precautionary statements

    P260 Do not breathe dust / fume / gas / mist / vapours / spray.
    P280 Wear protective gloves / protective clothing / eye protection / face protection.
    P305 P351 P338 IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
    P310 Immediately call a POISON CENTER or doctor / physician.
    P405 Store locked up.