Polyester Resins

Polyester resins (UP resins) form the basis of our product range in the glass fibre reinforced plastic systems business area – with a wide variety of applications. They range from thixotrope standard systems for manual lamination and fibre spraying to low-viscosity standard formulations for polymer concrete and sanitary applications to numerous special formulations for specific requirements. With a broad spectrum of properties and applications, our UP resin systems are suitable for products in a wide variety of industries. Typical properties Dense matrix / composite of approximately 1.1 g/cm³ / 1.5–1.7 g/cm³ Fibre content 25-50 % of total weight Moulded part mass per unit area of 4500-8000 g/m² Flexural modulus of elasticity 5000–25,000 MPa (with reinforcing mesh) Bending resistance of 130–260 MPa (with reinforcing mesh) Impact resistance of 45–95 KJ/m² Reinforcing materials: Continuous or cut glass fibre mats, fleece Mesh Non-crimp fabrics Special formulations and versions Styrene-reduced, environmentally friendly formulations Low-viscosity injection resins with reduced exothermic peak Formulations for the pultrusion process Systems with high chemical and hydrolysis resistance DIN 1140 versions with special mechanical values and dimensional stability under heat greater than 100 °C (HDT > 100 °C) Resins with good adhesion for combination with PVC Resin systems with shipping industry approval: Det Norske Veritas/Lloyd’s Register of Shipping/Germanic Lloyd Coordination with gel coat/top coat for surface refinement Flame protection formulations Electrical industry: UL 94 V0 Rail vehicle construction: DIN 5510 (S4, SR2, ST2)