Reversol P-9523 P unsaturated orthophthalic resin is a rigid, medium reactivity and low viscosity resin. It is promoted, non-waxed and non-thixotropic. Its peculiar rheology allows easy incorporation of filler and yet generate good surface finish when used in close, cold or warm, moulding. Reversol P-9523 P is recommended to be cured with Methyl Ethyl Ketone Peroxide (MEKP).

Available Documents

TDS Download

Technical Informations

Application Advice/Typical Applications

(# Curing schedule was 12 hrs at room temperature followed by 12 hrs at 50°C, and 3 hrs at 80°C)

Close, warm or cold, moulding. General purpose FRP lamination.

Shipping and Storage

To ensure maximum stability and maintain optimum resin properties, Reversol P-9523 P should be stored in closed containers below 32ºC and away from heat sources and sunlight. All storage should conform to local fire and building codes. Drums should be stored away from all sources of flame or combustion. Inventory should be maintained at minimum reasonable stock and used on a first-in-firstout basis. When properly stored, Reversol P-9523 P will remain stable for 3 months from date of delivery.

Product Security/Health and Safety

Before handling, please read the Safety Data Sheet of this product for advice on safety, use and disposal.

Effluents and Pollution Control

Before handling, please read the Safety Data Sheet of this product for advice on safety, use and disposal.

For further information regarding this product please refer to:

Synthomer Limited Head Office
Phone: +44 (0)1279 436 211
FAX: +44 (0)1279 444 025


Character Value Unit
Non-Volatile 64 ± 2
Viscosity@ 25°C - Brookfield, #3/60 450 - 550 cps 
Geltime @ 25°C - 100g resin + 1% MEKP 6 - 8 minute 
Acid Value 32 mg KOH/gm 
Specific Gravity 1.14  
Resin Colour Yellowish  
Clarity Clear  
Tensile Strength 74.3 MPa 
Tensile Modulus 4736.3 MPa 
Flexural Strength 106.2 MPa 
Flexural Modulus 3789.9 MPa 
Elongation at Break 2.06
Barcol Hardness (Model GYZJ 934-1) 42  

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