MEK PEROXIDE

What is MEK PEROXIDE by Laminados y complementos and why choose it

MEK PEROXIDE by Laminados y complementos is a liquid catalyst based on methyl ethyl ketone peroxide, designed for curing polyester resins, bonding pastes and gelcoats at room temperature. It is used in combination with the brand’s polyester-based systems to ensure reliable polymerisation and consistent mechanical performance of the final laminate or repair.

This catalyst is suitable for professional users who require controlled curing, good surface finish and compatibility with a wide range of Laminados y complementos products such as bonding mastics and gelcoats. Always handle as a hazardous, oxidising product and follow the safety data sheet and local regulations.

Main features

• Catalyst for polyester systems: Specifically formulated for curing polyester resins and gelcoats from Laminados y complementos.
• Recommended dosage: To be added typically between 1.8 and 3% by weight on the resin base, depending on ambient temperature and product type (data based on manufacturer’s product information, not a substitute for the official technical sheet).
• Room temperature curing: Enables curing of unsaturated polyester systems at standard workshop temperatures without additional heat.
• Compatible products (according to manufacturer listing, non-exhaustive): Polyester resin repair kit, MASTIC LD GRAVICOL 2039-TC, GRAVICOL 2397-TC PUTTY WITH FIBER, GRAVICOL 2428-TC fiber-based mastic, GELCOAT white RAL 9003, WAXED GELCOAT RAL 9003.
• Professional use: Intended for composite workshops, boatyards, repair shops and industrial users familiar with handling organic peroxides.
• Hazardous product: MEK peroxide is an organic peroxide with oxidising properties; it must be stored, transported and used following strict safety instructions (details must be confirmed in the official safety data sheet).

Technical specifications

The following information is compiled from publicly available product data and may not be complete. For design-critical or safety-related decisions, always consult the official technical and safety data sheets from Laminados y complementos.

• Product type: Liquid catalyst based on methyl ethyl ketone peroxide (MEKP).
• Function: Curing agent for polyester resins, bonding pastes and gelcoats.
• Recommended mixing ratio (general guideline): approx. 1.8–3% MEK PEROXIDE by weight on the resin or gelcoat base, depending on temperature and specific product.
• Typical compatible systems (examples indicated by the supplier):
  • Polyester resin repair kit (Laminados y complementos).
  • MASTIC LD GRAVICOL 2039-TC (polyester bonding paste).
  • GRAVICOL 2397-TC PUTTY WITH FIBER.
  • GRAVICOL 2428-TC fiber-based mastic.
  • GELCOAT white RAL 9003.
  • WAXED GELCOAT RAL 9003.
• Packaging formats (indicative, to be confirmed): small and medium-size containers typically used for 30 g, 125 g and 1 kg ranges. Exact packaging and availability must be checked with the supplier.
• Curing conditions: Room temperature curing; exact temperature ranges and pot life depend on the resin/gelcoat system and are not fully specified here.

Applications and use cases

• Gelcoat curing: Used as the catalyst in polyester gelcoats (including white RAL 9003 and waxed gelcoats from Laminados y complementos) for surface finishing and repair of fiberglass parts.
• Bonding pastes and mastics: Catalyst for polyester-based bonding pastes such as GRAVICOL 2039-TC and 2397-TC, used in GRP (glass-reinforced polyester) bonding, filling cavities, and structural or semi-structural joints, according to each mastic’s instructions.
• Polyester resin repair kits: Supplied as the curing component in repair kits for laminates and fiberglass components.
• Fiberglass repair and maintenance: Suitable for composite repair operations on boats, industrial components, and other GRP parts where polyester systems are specified.

All application parameters (exact dosage, working time, curing time, maximum thickness, etc.) must be taken from the technical documentation of each resin, mastic or gelcoat in which MEK PEROXIDE is used.

FAQ – MEK PEROXIDE Laminados y complementos

1. What is MEK PEROXIDE used for?

It is a catalyst based on methyl ethyl ketone peroxide used to cure polyester resins, bonding mastics and gelcoats from Laminados y complementos. It initiates the polymerisation reaction, allowing the material to harden at room temperature.

2. What is the recommended mixing ratio?

General supplier information indicates a typical range of about 1.8–3% by weight of MEK PEROXIDE on the resin or gelcoat base, depending on the temperature and specific product. Always check the exact ratio in the official technical sheet of the resin, mastic or gelcoat you are using.

3. Can I use this catalyst with any polyester resin?

It is designed and recommended primarily for Laminados y complementos polyester systems (resins, mastics and gelcoats). While MEKP is common in many polyester systems, using it with other brands or formulations should only be done if confirmed as compatible by the respective manufacturer.

4. How does temperature affect the dosage?

At lower temperatures, a higher percentage within the recommended range may be needed to ensure proper curing; at higher temperatures, a lower percentage is generally used to avoid excessive exotherm and too rapid curing. The exact adjustment must follow the guidance in the official technical and safety data sheets.

5. Is MEK PEROXIDE dangerous?

Yes. MEK peroxide is a hazardous organic peroxide and strong oxidiser. It can cause burns and eye damage and may react dangerously with incompatible materials. It must be handled with care, using appropriate personal protective equipment and following the safety data sheet and local regulations.

6. How should I store MEK PEROXIDE?

It should be stored in its original, tightly closed container, in a cool, well-ventilated place, away from direct sunlight, heat sources, flame, and incompatible materials. Do not store near accelerators, metals or combustible substances. Exact storage temperature ranges and shelf life must be verified in the official safety data sheet.

7. Can I mix MEK PEROXIDE directly with accelerators or other catalysts?

No. Organic peroxides like MEK PEROXIDE must never be mixed directly with metal accelerators or other catalysts in pure form, as this can lead to violent reactions. The accelerator should be mixed into the resin first (if the system requires it), and the peroxide added afterwards according to the manufacturer’s instructions.

8. What should I do in case of skin or eye contact?

Immediately rinse the affected area with plenty of water for several minutes. Remove contaminated clothing. Seek medical attention, especially in case of eye contact or persistent irritation. The exact first-aid measures must always be taken from the product’s official safety data sheet.

9. Is this product suitable for DIY users?

Due to the risks associated with handling organic peroxides, MEK PEROXIDE is recommended for trained or professional users familiar with composite materials and chemical safety. Less experienced users should follow all instructions meticulously and, where possible, work under professional supervision.

10. Where can I find complete technical and safety information?

For detailed data on composition, reactivity, hazard classification, transport regulations, storage conditions and recommended PPE, consult the official technical and safety data sheets provided by Laminados y complementos.

Section 14 – Transport information (summary, not verified)

Important: The following points are general considerations for organic peroxides and do not replace the official Section 14 of the safety data sheet. Specific UN number, packing group, hazard class and transport labels for MEK PEROXIDE from Laminados y complementos are not verified here.

• MEK PEROXIDE should be considered a hazardous material for transport and handled according to ADR/RID, IMDG, IATA and local regulations.
• Transport only in approved, well-closed original containers, upright and secured to prevent tipping or leakage.
• Protect from heat, direct sunlight and sources of ignition during transport.
• Do not transport together with incompatible materials such as strong reducers, accelerators, acids, bases, metals, flammable or combustible substances, unless allowed by the applicable regulations.
• Vehicle ventilation is recommended to avoid vapour accumulation in closed spaces.
• Drivers and handlers should be informed of the product’s hazardous nature and have access to the safety data sheet in case of incident.

For precise transport classification (including UN number, transport hazard class, packing group, tunnel restriction codes, marine pollutant status, etc.), always refer directly to Section 14 of the official safety data sheet for this specific product.

Section 8 – Individual protection measures (summary, not verified)

The following is a general overview of typical individual protection measures for handling organic peroxides such as MEK PEROXIDE. It is not a substitute for Section 8 of the official safety data sheet. Exact PPE requirements (materials, protection levels, standards) must be confirmed in the manufacturer’s documentation.

8.1 General safety and hygiene recommendations

• Work in well-ventilated areas or use local exhaust ventilation to minimise vapour exposure.
• Avoid direct contact with skin, eyes and clothing. Do not breathe vapours or mists.
• Do not eat, drink or smoke while handling the product. Wash hands and exposed areas thoroughly after use.

8.2 Personal protective equipment (PPE)

• Eye and face protection: Safety goggles with side shields or face shield providing full eye protection against splashes.
• Hand protection: Chemical-resistant gloves (for example, nitrile or other gloves compatible with organic peroxides, as indicated by the safety data sheet). Inspect regularly and replace if damaged or contaminated.
• Skin and body protection: Long-sleeved protective clothing or chemical-resistant coveralls to prevent skin contact. Use safety shoes or boots resistant to chemicals as required.
• Respiratory protection: If adequate ventilation cannot be ensured, or if vapour concentrations may exceed occupational exposure limits, use an appropriate respirator with organic vapour filter, following local regulations and the recommendations of the safety data sheet.

8.3 Additional protective measures

• Provide eyewash stations and emergency showers in the work area where MEK PEROXIDE is handled.
• Avoid sources of heat, sparks or open flames in the working area.
• Ensure all personnel handling the product are trained in chemical safety and emergency procedures.

*Contenido generado por IA