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BUP 625 is an un-promoted orthophthalic based unsaturated polyester resin with medium viscosity, very good flexibility and mechanical properties for ambient temperature cure with MEK peroxide.

Chemical Family: Polyesters

Features: Abrasion Resistance

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
CASE Ingredients Functions
Technologies

Features & Benefits

CASE Ingredients Features
Characteristics and Advantages
  • Medium viscosity
  • Very good flexibility
  • Very good mechanical properties
  • Good resistant to impact
  • Outstanding filler binding power

Applications & Uses

Uses

Abrasive and grindstone applications

Properties

Appearance
clear
Typical Properties
ValueUnitsTest Method / Conditions
Water absorptionMax 0.28wt%ISO 62
Acid numberMax 24mg KOH/gASTM D1639
ColorMax 2GardnerASTM D1544
Curing time20-10minASTM D2471
Density (at 23°C)1.1253g/cm³ASTM D1475
Flash point (open cup)19.1°CASTM D92
Flexural modulus2639MPaISO 178
Flexural strengthMin 120MPaISO 178
Gel Time25-11minASTM D2471
Hardness (Barcol)min. 42ASTM D2583
Heat distortion temperature (HDT)Min 65°CASTM D648
Linear shrinkage (ΔL/L)Max 1.2%ASTM D2566
Peak exothermic temperatureMax 190°CASTM D2471
Solid content61±2wt%ASTM D1259
Tensile elongation7.6%ISO 527-2
Tensile modulus668MPaISO 527-2
Tensile strengthMin 65MPaISO 527-2
Viscosity (at 25°C)350-500mPa.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.