Rigid polyprene 15-100

Polyprene 15-100 is a rigid HCFC-free (ODP=0, GWP=0) system designed for structural, decorative and wood imitation applications.

Typical Component Properties

Units A-15-100 Polyol B – Polymeric MDI
OH number mg KOH/g 398 -
H2O content % 0.9 -
NCO content % - 30 – 32
Viscosity, 25°C cps 1000 200
Specific Gravity, 25°C g/cm3 1.08 1.23

Recommended Process Conditions

Units Values
A-15-100 Polyol pbw 100
B – Polymeric MDI pbw 115
Polyol temperature °C 19 – 21
Isocyanate temperature °C 20 – 24
Typical moulds temperature °C 35 – 45
Demoulding time min 10 – 15

Typical Reaction Characteristics

Units Hand-mix*
Ratio Polyol/Iso 100:115
Cream time s 40 – 60
Gel time s 80 – 120
Rise time s 100 – 160
Free rise density kg/m3 95 – 105

*Data referred to laboratory tests made with Isocyanate component at 20°C and Polyol component at 20°C, hand-mixed with mechanical stirrer at 3000 rpm. Reported values vary depending on processing conditions.

Handling and Storage

The Iso component must be stored in liquid state. In case of crystallization it has to be melted heating the drum at 60-70°C for no more than 24 hours.

Units A-15-100 Polyol B – Polymeric MDI
Storage temperature °C 10 - 20 15 - 25
Shelf life months 3 6

Typical Polymer Properties

These items are provided as general information only.

Units Typical value
Overall density kg/m3 400
Closed cell content % 95
Hardness Shore D 55
Size stability (48 h aging):
- at -25°C		 % 1
- at +70°C % 1
Tear strength MPa 7.5
Flexural strength MPa 16.5

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