How to order United Initiators NOROX®PULCAT?

For bulk orders of United Initiators NOROX®PULCAT, please contact our sales team via the contact page (https://www.yunno.net/en/contact) or email us at huyu@yunno.net, or call/WhatsApp +86 137 7522 5407. We provide cold-chain logistics and technical support.

Do you provide technical data sheets (TDS) and safety data sheets (MSDS) for United Initiators NOROX®PULCAT?

Yes, Yunno Chemical provides full technical data sheets (TDS), certificates of analysis (COA), and GHS-compliant safety data sheets (MSDS) for qualified customers. Please contact our technical support team for more information.

United Initiators NOROX®PULCAT S Methylisobutyl Ketone Peroxide 37206-20-5 (CAS 37206-20-5)

NOROX® PULCAT S is a highly reactive liquid mixture whose main component is a methyl isobutyl ketone-based peroxide that has been desensitized using aliphatic hydrocarbons.This peroxide serves as a curing agent (radical source) for unsaturated polyester resins. It is primarily used for curing large molded parts under high-temperature conditions (60–120°C). Technical Data:

Appearance: Colorless liquid
Active oxygen content: approx. 10.5% w/w
Desensitizer: Fatty esters
Density (20°C): approx. 0.89 g/cm³
Viscosity (20°C): approx. 5 mPas
Solubility: Insoluble in water; miscible with alcohols and phthalates
Critical Temperature (SADT): Approximately 50°C
Refrigerated Stability: Remains liquid at temperatures below -25°C
Initiation temperature: approx. 55°C
Recommended storage temperature: Below 25°C
Shelf life at 25°C after delivery: 6 months
Compliant with ElektroG (EU Directives: RoHS 2002/95/EG, WEEE 2002/96/EG)

Applications:

Curing of polyester resins
Application: As a curing agent for UP resins; may be used in combination with cobalt accelerators
Temperature range: 60–120°C
Usage Level: 1–2% of the undiluted product; may be used in combination with 0.1–0.5% of the COB-1TX accelerator if necessary
Curing can occur at room temperature; the typical “pot life” of the resin plus peroxide mixture is 4–8 hours
The pot life can be extended by lowering the storage temperature
The “working time” for the resin + peroxide + accelerator mixture is typically 1–3 hours
The pot life can be extended by adding the inhibitor TC-510
Curing Characteristics: Has a relatively long gel time at room temperature but a short curing time; can be used in combination with cobalt accelerators
Above approximately 55°C (“initiation temperature”), curing occurs relatively quickly even without cobalt
Moderate exothermic reaction with low internal stress
Moderate degree of cure; post-curing at 80–120°C is recommended
Processing Methods: Specifically designed to provide a relatively long pot life while maintaining the lowest possible initiation temperature; therefore, it is particularly suitable for continuous impregnation of (corrugated) panels and applied gel coats, as well as fiber winding of pipes and tanks

Measurement Data:

Reactivity of polyester resins for curing at room temperature:
- Resin: Positive-phase acid-curing polyester, medium reactivity
- Temperature: 25°C
- Method: DIN 16945 (20-gram test tube)
- Formulation: By weight parts
Reactivity of polyester resins for curing at high temperatures:
- Temperature range: 50°C–80°C

Packaging:

The standard packaging for NOROX® PULCAT S is 20 kg.

Disclaimer: This information and all further technical recommendations reflect our current knowledge and experience based on internal testing using local raw materials and are intended to provide information about our products and their applications. This information should not be construed as a guarantee of specific performance characteristics of the described products or their suitability for specific applications, nor should it be construed as providing complete instructions for use.This information does not constitute a guarantee of product performance or shelf life, nor does it imply any liability or other legal responsibility on our part, including liability related to existing third-party intellectual property rights, particularly patent rights.We reserve the right to make any changes based on technical progress or further developments. The use and application of our products based on our technical recommendations are beyond our control, and the user assumes sole responsibility. The user is obligated to carefully inspect and test the received goods to verify their suitability for the intended application.

United Initiators NOROX®PULCAT S Methylisobutyl Ketone Peroxide 37206-20-5

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