Product Data Sheet Version 06 / 2010 Biresin® M73 Areas of Application Product Benefits Machine application of paste on substructures for production of contour shaped machinable blanks for design-, styling- or cubing models Hard, low density material with high dimensional stability High temperature resistance and good mechanical properties without post curing Immediately after mixing mixture gets thixotropic and hangs on vertical surfaces Fine, dense surface, easy to varnish Easily workable Basis Resin Hardener Filler Two-component-PUR-system Biresin ® M73, polyol, brown, filled Biresin ® M70, MDI-based isocyanate, reddish brown, unfilled Biresin ® Spachtel braun or weiß, two-component-polyester-system, brown or white Processing Data Individual components Mixing ratio resin to hardener Potlife, RT, after machine application Setting time (workable) Physical Data (approx. values) Biresin ® M73 resin with hardener Shore hardness Flexural strength Impact resistance Glass transition temperature, Tg Tooling & Composites Model paste

Processing Data Biresin ® Spachtel braun or weiß Mixing ratio Setting time, RT (workable) Packaging Individual components Filler Biresin® M73, resin Biresin® M70, hardener Biresin® Spachtel braun, resin Biresin® Spachtel weiß, resin BPO-Paste, hardener 150 kg; 30 kg net 225 kg; 20 kg net KT: 2 x 8.74 kg cartridges 6 x 1.76 kg tins in a box KT: 2 x 9.84 kg cartridges 6 x 1.96 kg tins in a box 2 x 0.16 kg sticks (for cartridges) 6 x 0.04 kg tubes in a box (for tins) The material, processing and mould temperature must be 18 - 25°C. Before use the resin component must be mixed thoroughly and homogeneously...

Value Bases All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstan­ es beyond our control. c Legal Notice Further information available at: Sika Deutschland GmbH Subsidiary Bad Urach The information, and, in particular, the recommendations relating to the application and end-use of Sika products, are given in good faith based on Sika‘s current knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with Sika‘s recommendations. In practice, the differences...