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Polyurethane casting resin with higher viscosity, longer pot life and demoulding time for large moulds.
Two-component polyurethane system. PU casting resin PC39 (component A) + PU hardener G226 (component B).
Odourless. For large models, moulds and negatives. Very good moulding, fast curing, low heat development (exothermic reaction), low shrinkage, especially when fillers are added. Differs from PC 26 in that it has a longer pot life. Is moulded in thin or thicker layers. Fillers can be added depending on the layer thickness. Good pigmentability, mixes well with bronze and other metal powders.
Application:
Shake the closed resin container (component A) well before use so that any deposits can dissolve. Carefully mix component A and component B (PU hardener G226) in a weight ratio of 100:100 and apply quickly. Ensure that all objects that come into contact with the polyurethane resin are absolutely dry, otherwise curing may be disturbed or undesirable foaming may occur.
Can be thickened with fillers. Shrinkage is reduced by the extensive use of fillers. If fillers (component C) are used, weigh component A, component B and component C in a weight ratio of 100:100:300. To obtain particularly light objects, a very light filler can also be used in a weight ratio of 100:100:150. First mix the larger quantity of filler with component B (PU hardener) and the smaller quantity with component A (PU casting resin). Then mix both compounds carefully and process quickly.
TECHNICAL DATA
Polyurethane resin PC39 (A)
Colour: white
Density at 25 °C: 1.00-1.04 g/cm³
Polyurethane hardener G226 (B)
Colour: yellow
Density at 25 °C: 1.10-1.12 g/cm³
| Components | A + B | A + B + C |
| Weight ratio | 100:100 | 100:100:300 |
| Pot life (25 °C, 3,000 mPas) | 13-20 minutes | |
| Pot life (25 °C, 15,000 mPas) | 8-12 minutes | |
| Exothermic peak (25 °C, 40 mm, 100 ml) | 65 °-75° C | 40 °-45 °C |
| Demoulding time (25 °C, 15 ml, 6 mm) | 10-12 hours | 10-12 hours |
| Max. recommended layer thickness | 3-7 mm | 30-70 mm |
| Linear shrinkage (24 h at 25 °C + 15 h at 60 °C) | 2,70-2,85 ‰ | 1,25-1,30 ‰ |
From 24 August 2023, appropriate training must be provided before industrial or commercial use
Polyurethane casting resin PC39 bianco - COMPONENTS A:
The product is subject to labelling according to GHS/CLP directives. Labelling according to Regulation (EC) 1272/2008:
UFI: XG02-T05G-U003-MGC2
GHS07, GHS08, GHS09
Signal word: DANGER
Contains: Bis(isopropyl)naphthalene
H304 May be fatal if swallowed and enters airways. H319 Causes serious eye irritation. H411 Toxic to aquatic life with long lasting effects.
P273 Avoid release to the environment. P280 Wear protective gloves / protective clothing / eye protection / face shield. P301 + P310 If swallowed: Immediately call a poison centre or doctor. P331 Do not induce vomiting. P337 + P313 If eye irritation persists: Get medical attention. P391 Take up spillages.
Polyurethane hardener G226 COMPONENTS B:
The product is subject to labelling according to GHS/CLP guidelines. Labelling according to Regulation (EC) 1272/2008:
UFI: T120-G081-600Q-X53N
GHS07, GHS08, GHS09
Signal word: DANGER
Contains: Diphenylmethane diisocyanate
4,4 i-methylene diphenyl diisocyanate
MDI modified with tripropylene glycol
Bis(isopropyl)naphthalene
o-(p-isocyanatobenzyl)phenyl isocyanate
H304 May be fatal if swallowed and enters airways. H315 Causes skin irritation. H317 May cause an allergic skin reaction. H319 Causes serious eye irritation. H332 Harmful if inhaled. H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled. H335 May cause respiratory irritation. H351 Suspected of causing cancer (if inhaled). H373 May cause damage to organs (respiratory system) through prolonged or repeated exposure. H411 Toxic to aquatic life with long lasting effects.
P260 Do not breathe dust / fume / gas / mist / vapour / aerosol. P273 Avoid release to the environment. P280 Wear protective gloves / protective clothing / eye protection / face shield. P301 + P310 If swallowed: Immediately call a poison centre or doctor. P304 + P340 If inhaled: Remove to fresh air and keep at rest in a position comfortable for breathing. P312 If you feel unwell, call a poison centre or doctor. P308 + P313 In case of exposure or if affected: Get medical advice / attention. P331 Do not induce vomiting. P391 Take up spillage.
EUH 204 Contains isocyanates. May cause an allergic reaction.
