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Metox VLHP90 is a liquid peroxide initiator based on peroxides methyl ethyl ketone in an Ōalan plasticizer. Compared with the standard MEKP, the initiator contains a reduced content of hydrogen peroxide, water and methyl ethyl ketone. May be used for curing unsaturated polyester resins (UPR), gelcoats, in the presence of cobalt accelerator. Especially recommended for curing gel coats due to very low content of hydrogen peroxide, water and methyl ethyl ketone. This high purity initiator can be used wherever the use of Permix-MC96 is demonstrated too fast gelling. Compared to Metox-BW85, it has a shorter gel and hardening time.

Functions: Initiator

Chemical Family: Peroxides

Compatible Polymers & Resins: Polyesters, Vinyl Esters

Processing Methods: Centrifugal Casting, Compression Molding, Lamination, Resin Transfer Molding, Spray Lay-Up, Vacuum Casting

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Plastics & Elastomers Functions

Features & Benefits

Labeling Claims
Materials Features

Applications & Uses

Compatible Polymers & Resins
Plastics & Elastomers End Uses
Applications
  • Manual and spray lamination
  • RTM (resin transfer molding)
  • Cold press molding
  • Vacuum casting
  • Gelcoats
  • Polymer concrete and artificial marble
  • Coatings / varnishes
  • Centrifugal casting
  • Vinylesters

Properties

Physical Form
Appearance
Clear, Colorless Solution
Character
Methyl Ethyl Ketone Peroxide Mixture in Dimethyl Alane
Solvent
Dimethyl Phthalate
Insoluble in
Water
Typical Properties
ValueUnitsTest Method / Conditions
Active Oxygen Content8.8 - 9.1%
Density (22°C)1.167 - 1.171g / cm³
Gel Time24 - 25min
SADT60°C
Highest Temperature163.4 - 165.6°C
Organic Peroxide Content35%
Storage Temperature0 - 25°C
Time to Peak Temperature40 - 41min
Water Contentapprox. 1.3%

Regulatory & Compliance

Certifications & Compliance

Safety & Health

Threats

Oxidizing agent, decomposes rapidly under the influence of heat and pollution mechanical or through contact with reducing agents. You never must mix the hardener with the accelerator.