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BUP 623 is an un-promoted orthophthalic based unsaturated polyester resin with medium viscosity, limited shrinkage and very good mechanical properties for ambient temperature cure with MEK peroxide.

Polymer Name: Thermoset Polyester

Chemical Family: Orthophthalics, Polyesters, Unsaturated Polyester (UPE)

Technical Data Sheet
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Identification & Functionality

Composite Materials Functions

Features & Benefits

Characteristics and Advantages
  • Medium viscosity
  • Limited shrinkage
  • Very good adhesion to glass fibers
  • Very good mechanical properties
  • Outstanding filler binding power

Applications & Uses

Uses
  • Artificial stone
  • Solid surface

Properties

Appearance
clear
Typical Properties
ValueUnitsTest Method / Conditions
Water absorptionMax 0.3wt%ISO 62
Acid numberMax 25mg KOH/gASTM D1639
ColorMax 1GardnerASTM D1544
Curing time14-8minASTM D2471
Density (at 23°C)1.1448g/cm³ASTM D1475
Flash point (open cup)22°CASTM D92
Flexural modulus2055MPaISO 178
Flexural strengthMin 120MPaISO 178
Gel Time25-12minASTM D2471
Hardness (Barcol)min. 40ASTM D2583
Heat distortion temperature (HDT)Min 55°CASTM D648
Linear shrinkage (ΔL/L)Max 1%ASTM D2566
Peak exothermic temperatureMax 180°CASTM D2471
Solid content65±2wt%ASTM D1259
Tensile elongation8.2%ISO 527-2
Tensile modulus583MPaISO 527-2
Tensile strengthMin 50MPaISO 527-2
Viscosity (at 25°C)500-700mPa.s (cP)ISO 2555

Safety & Health

Product safety and Environmental protection

The usual protective measures employed during the handling of Unsaturated Polyester Resins should be observed. Further product safety information can be obtained from our Material Safety Data Sheet which is available on request.

Packaging & Availability

Packaging

225 kg (net) in steel drums

Storage & Handling

Storage

Store in a cool place below 25 °C and away from moisture and direct sunlight. Under above mentioned storage conditions, the shelf life of the resin will be at least 6 months ex-works.