Description: CUROX? CM-75 is a mixture of peroxides on the basis of methyl ethyl ketone peroxide and tert-butyl peroxide, with the addition of a phthalate plasticizer, yellow in color and fluid. It is mainly used as a curing agent for unsaturated polyester resins, and is particularly suitable for vinyl resins. It is mainly used in vacuum infiltration/plastic bagging technology and with cobalt or cobalt/amine accelerators for the curing of hand/spray reinforced parts at room temperature, mainly for thicker laminated products.

Technical data:

• Appearance: yellow liquid
• Active Oxygen Content: Approx. 8.81 TP3T (mass fraction)
• Hydrogen peroxide content: approximately 0.7% (mass fraction)
• Water content: approx. 1.21 TP3T (mass fraction)
• Desensitizer: Phthalates
• Density (20°C): approx. 1.1 g/cm3
• Viscosity (20°C): approx. 19 mPa-s
• Solubility: soluble with alcohols and phthalates
• SADT: above 60°C
• Refrigeration stability: below -20°C
• Recommended storage temperature: 0°C to 30°C
• Retention time (from 30°C, from date of manufacture): 6 months.

Applications:

• For curing of unsaturated polyester resins in combination with cobalt/cobalt-amine accelerators at room temperature.
• Suggested dosage: 1-2.51 TP3T (as supplied) in combination with 0.5-21 TP3T of 11 TP3T cobalt solution.
• Limited applicability to vinyl resins, can be used in combination with cobalt octanoate/xylenolamine for a stronger accelerating effect.
• The "latency" (gel time of resin + peroxide + accelerator) can be long enough for vacuum penetration/injection molding.

Curing performance:

• Depending on the type of resin, less heat release and thin/thick layers ensure better curing speed.
• The unsaturated polyester resin had a longer gel time and gel-to-peak time than the standard methyl ethyl ketone peroxide (Curox M-303).
• Temperatures below 20°C significantly extend the curing time, at which point cobalt/amine accelerators should be used.

Processing methods:

• Hand lamination, spray lamination, fiber winding, penetration processes and especially RTM (Resin Transfer Molding).

Spraying equipment:

• Use spray equipment that meets manufacturer's instructions.
• Ensure that all safety devices are functioning properly.
• Do not clean the gun by spraying peroxide into the air.

Standard Packaging: The standard package size for CUROX? CM-75 is a 25 kg polyethylene bottle.

Disclaimer: The information and all further technical recommendations in the documentation are based on current knowledge and experience reflected in in-house testing of local raw materials and are intended to introduce our products and applications. The information should not be construed as a guarantee of the specific performance of the products described or their suitability for a particular application, nor should it be construed as providing complete instructions for use. The information does not guarantee the performance of the products and warranties, nor does it guarantee the existence of existing third-party intellectual property rights, such as our intellectual property rights or patents, nor does it assume any legal liability for them. We reserve the right to make any changes in accordance with technological advances or further developments. The use and application of our products based on our technical recommendations is beyond our control and it is the responsibility of the user to carry out careful incoming inspection and testing to verify their suitability for the intended application.