Hardener W 300 (300 min)

Hardener W 300 (300 min)

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

  • 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" separately.

R&G

Hardener W 300, canister/ 1,75 kg

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

Item no.  1001494 Only 9 left in stock, more on the way  (delivery time 1-2 days)

Add to Shopping List

47,10 
(Base Price 26,91 € /  kg)

Scaled Price

  • From Qty 2:  5,00%
  • From Qty 5:  10,00%
- +
R&G

Hardener W 300, canister/ 3,5 kg

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

Item no.  1001495 Only 5 left in stock, more on the way  (delivery time 1-2 days)

Add to Shopping List

78,35 
(Base Price 22,39 € /  kg)

Scaled Price

  • From Qty 2:  5,00%
  • From Qty 5:  10,00%
- +
R&G

Hardener W 300, canister/ 8,75 kg

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

Item no.  1001496 Only 5 left in stock, more on the way  (delivery time 1-2 days)

Add to Shopping List

164,64 
(Base Price 18,82 € /  kg)

Scaled Price

  • From Qty 2:  5,00%
  • From Qty 3:  10,00%
  • From Qty 5:  15,00%
- +
R&G

Hardener W 300, canister/ 26,25 kg

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

Item no.  1001497 Only 3 left in stock, more on the way  (delivery time 1-2 days)

Add to Shopping List

463,52 
(Base Price 17,66 € /  kg)

Scaled Price

  • From Qty 3:  5,00%
  • From Qty 6:  10,00%
  • From Qty 12:  15,00%
- +

all Prices  price incl. VAT, possibly plus shipping

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Instructions for use
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Hazards identification - Hardener W 300

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.

Hazards identification - Epoxy Casting Resin WATER-CLEAR

Hazard components for labelling

2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)] bisoxirane
1,6-bis(2,3-epoxypropoxy)hexane
Reaction mass of 2,2'-[methylenebis(4,1-phenyleneoxymethylene)]dioxirane and [2-({2-[4- (oxiran-2-ylmethoxy)benzyl]phenoxy}methyl)oxirane and [2,2'-[methylenebis(2,1-phenyleneoxymethylene)]dioxirane

Signal word: Warning

Pictograms:

GHS07 GHS09

Hazard statements

H315 Causes skin irritation.
H317 May cause an allergic skin reaction.
H319 Causes serious eye irritation.
H411 Toxic to aquatic life with long lasting effects.
H412 Harmful to aquatic life with long lasting effects

Precautionary statements

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
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.

Special labelling of certain mixtures

EUH205 Contains epoxy constituents. May produce an allergic reaction.