Nouryon Organic Peroxides, Levasil Colloidal Silica and Polymer Additives

Selection and quotation of Nouryon materials: Trigonox, Perkadox, Butanox and Laurox organic peroxides, Levasil colloidal silica, Ketjenblack carbon black and Nouryact accelerators.

Trigonox Polymerization Initiators and Modifiers

Trigonox are organic peroxides for polymer production and modification. Trigonox 187-W40 (diisobutyryl peroxide) initiates low temperature polymerization of vinyl chloride for high K-value PVC, and Trigonox 501-CS40 produces controlled rheology polypropylene without acetone or tert-butanol.

Trigonox 187-W40: emulsion initiator for PVC
Trigonox EHP: peroxydicarbonate paired with 187-W40
Trigonox 501-CS40: CR-PP and LDPE production
Trigonox B, 145-E85, 301 and 311: PEX-a pipe crosslinking

Perkadox Crosslinking Peroxides for Rubber and Polyolefins

Perkadox 14-40B-PD is a 40% powder formulation of di(tert-butylperoxyisopropyl) benzene on an inert carrier for crosslinking natural and synthetic rubbers and polyolefins. Perkadox 14S-FL serves footwear without acetophenone odor, while Perkadox BC, Perkadox 14 and Trigonox T serve energy cables.

Perkadox 14-40B-PD safe processing: 135 °C
Perkadox 14-40B-PD typical crosslinking: 175 °C
Perkadox 14-EP40: polymer bound granules
Trigonox 117 Solar: EVA and POE encapsulant films

Butanox Curing Agents and Laurox Initiator

Butanox are methyl ethyl ketone peroxides (MEKP) for curing unsaturated polyester, vinyl ester and (meth)acrylate resins. Butanox M-50 is a medium-reactive, general purpose MEKP with low water content used with a cobalt accelerator. Laurox cures acrylic solid surface within the 60–90 °C range.

Butanox M-50 VRN: high reactive MEKP
Butanox LPT-IN: extra long gel times
Butanox P-50: fast curing of laminates and gelcoats
Laurox: vinyl chloride polymerization at 60–80 °C

Levasil Colloidal Silica

Levasil are low viscosity aqueous dispersions of colloidal silica. Grades differ in particle size, concentration, pH, stabilization and surface modification. They serve as a binder in catalyst production, for concrete densification, in paints and coatings and as a polishing agent for substrates.

Levasil CA421 PNH: 40% solids, ammonia stabilized
Levasil CB30: 30% solids, concrete densification
Levasil CC301: epoxy silane modified, coatings
Levasil SP3089: 50% solids, surface polishing

Ketjenblack Electroconductive Carbon Black

Ketjenblack EC-300J and EC-600JD are electroconductive carbon blacks in pellet form for antistatic and conductive compounds based on thermoplastics, thermosets and elastomers. The high surface area lowers the loading, and the low ash content suits semicon cable shielding.

EC-300J: surface area approx. 800 m²/g (BET)
EC-600JD: surface area approx. 1400 m²/g (BET)
EC-300J: one third of conventional black loading
EC-600JD: one sixth of conventional black loading

Nouryact Accelerators and Cure Promoters

Nouryact are copper and iron-based accelerators, an alternative to conventional cobalt or amine-based systems. Nouryact CF30 cures unsaturated polyester, acrylic and vinylester resins at elevated temperatures, and Promotor C (acetylacetone) serves cobalt-accelerated systems with ketone peroxides.

Nouryact CF30: 4 mm laminates at 80 °C
Nouryact CF30: agglomerated stone slabs
Promotor C: acetylacetone for cobalt systems
Armowax: processing aid for polymers

Choosing an Initiator by Process Temperature

Match the process temperature with the decomposition window of the peroxide. Laurox initiates methyl methacrylate polymerization in the 60–90 °C range and suspension, micro-suspension and mass polymerization of vinyl chloride between 60 °C and 80 °C, alone or with a peroxydicarbonate.

Trigonox 187-W40 is designed for low temperature polymerization of vinyl chloride to high K-value PVC and is combined with Trigonox EHP. Perkadox 14-40B-PD has a safe processing temperature of 135 °C (rheometer ts2 over 20 min) and a typical crosslinking temperature of 175 °C (t90 about 12 min).

Curing System for Unsaturated Polyester Resin

Butanox M-50 with a cobalt accelerator cures gelcoat resins, laminating resins and lacquers at room and elevated temperatures and allows light resistant parts, unlike the benzoyl peroxide and amine accelerator system.

Butanox LPT-IN is chosen for extra long gel times in standard orthophthalic resins and for vinylester resins, and Butanox P-50 for fast curing of laminates and gelcoats.

Nouryact CF30 reduces the activation temperature of peroxyesters and gives low residual styrene levels in agglomerated stone slabs.

Choosing a Levasil Grade by Stabilization and Surface

Levasil grades come with particle diameters of 2–150 nm, narrow, medium or wide size distributions and discrete particles or chains; surface modifications include ammonium, aluminate, chloride, potassium, silane and deionized.

Catalyst production uses the ammonia stabilized, low sodium CA421 PNH, concrete densification the sodium stabilized CB30, 2-pack coatings the epoxy silane modified CC301 (0.45 mole OH/kg), and polishing SP3089.

Silica particles have a hardness of 5.5 on the Mohs scale and raise abrasion resistance of coatings.

Loading of Electroconductive Carbon Black

Ketjenblack EC-300J with a surface area of approx. 800 m²/g (BET) reaches the same conductivity at one third of the loading of conventional electroconductive blacks, and EC-600JD with approx. 1400 m²/g at one sixth; EC-300J needs about double the amount of EC-600JD.

The lower loading keeps the mechanical and rheological properties of polymers sensitive to filler addition. The loading needed for a given conductivity varies significantly per type of polymer, so the grade and amount are selected with the manufacturer technical data.

Nouryon and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Nouryon and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.