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Product Data Sheet
Version 02 / 2011
Biresin® M72
Areas of Application
Product Benefits
Machine application of paste on substructures t
for production of contour shaped machinable t
blanks for design-, styling- or cubing models
Biresin ® M72 resin with higher thixotropy
Biresin ® M72 Classic resin with better flowing
properties
Hard, low density material with high dimensional
stability
After mixing the material becomes thixotropic
and hangs well on vertical surfaces
Fine, dense surface, easy to varnish
Stress releasing formulation lowers distortion
Easily workable
Description
Basis
Resin
Resin
Hardener
Filler
Two-component-PUR-system
Biresin ® M72, polyol, brown, filled
Biresin ® M72 Classic, polyol, brown, filled
Biresin ® M70, MDI-based isocyanate, reddish brown, unfilled
Biresin ® Spachtel braun, two-component-polyester-system, brown
Processing Data
Resin
Hardener
Biresin M72
Individual components
Biresin M72 Classic
Biresin ® M70
®
®
Viscosity, 25°C
mPas
~ 15,000
~ 9,000
~ 175
Density
g/cm³
0.76
0.76
1.23
Mixing ratio resin to hardener
in pbw
100
100
45
Mixture
Mixed viscosity , 25°C
after 10 - 15 sec pasty
Potlife, RT
min
Setting time (workable)
h
10 (after machine application)
>8
Physical Data (approx. values)
Biresin ® M72 / M72 Classic resin
with hardener
Biresin ® M70
Density
ISO 845
g/cm³
Shore hardness
ISO 868
-
D 65
E-Modulus
ISO 178
MPa
700
Flexural strength
ISO 178
MPa
20
Impact resistance
ISO 179
kJ/m²
Glass transition temperature, Tg ISO EN 61006 °C
0.9
9
47
Processing Data
Biresin ® Spachtel braun
Filler
Mixing ratio
in parts by weight
100 : 2
Potlife, RT
min
5
Setting time, RT (workable)
min
> 20
Biresin ® M72 1 / 2
Tooling & Composites
Model paste
"
