Crestapol® 1211A Urethane Acrylate Resin

• Low viscosity
• Rapid cure
• Excellent toughness
• No post cure required
• Pre-filled with a special grade of Alumina Trihydrate (ATH)
• Excellent surface finish
• Excellent FST performance
• Crestapol® 1211A is a versatile resin with excellent fire, smoke & toxicity properties and good mechanical properties.
• Its viscosity characteristics have been designed to promote a good resin flow through the mold using appropriate
• reinforcements, whilst minimizing filler settlement during storage. It is recommended for use when excellent low smoke, low toxic fume emissions and fire resistant laminates is desired.

Crestapol® 1211A has been primarily designed for use in closed mold applications, including RTM and Vacuum infusion with suitable reinforcements. Due to its excellent fire, smoke & toxicity properties, the product can be used in the most demanding applications in the building and construction, public transport and railway industries.

• Catalyst and accelerators should not be mixed directly together, since they react with explosive violence. The recommended catalyst is MEKP (50%) and the recommended accelerator is Accelerator G (1% solution of cobalt, as cobalt octoate, in styrene monomer).
• Cobalt free accelerators may be also considered (for more details on liquid cobalt free cure systems please seek assistance from our Technical Services Department). The accelerator should be added into the resin and thoroughly dispersed prior the injection of the resin in the RTM mold cavity. Catalyst Acetylacetone peroxide can also be used when faster demould times is required.
• Dibenzoyl peroxide based catalysts can also be used to start the curing reaction without the need to add an accelerator. The recommended catalyst is Dibenzoyl peroxide (50%) and should be added into the resin at a level of 1.0% and thoroughly dispersed. The geltimes that can be achieved depend on the levels of accelerator and catalyst. Examples of approximate pot life are shown in the tables below.

• * Made with 4 layers 450g/m² PB CSM
• ** Curing schedule at 24hrs at 20°C, 3hrs at 80°C
• † Curing schedule at 24hours at 20°C, 5 hours at 80°C, 3 hours at 120°C

Table 1 – 1.5% MEKP (50%)

Table 2 – 1.5% Acetylacetone peroxide

Accelerator G = 1% cobalt as cobalt octoate in styrene monomer. 

Table 3 – Dibenzoyl peroxide (50%)

Inhibitor NLC-10 can be used at ambient temperature to lengthen the geltime of a mixture of Crestapol® 1211A/ Dibenzoyl peroxide (50%). The following table demonstrates the effect of Inhibitor NLC-10 addition to Crestapol® 1211A resin.