Perkadox® BTW-50 is a 50% phthalate free dibenzoyl peroxide paste for curing unsaturated polyester resins at ambient and elevated temperatures.
| Appearance | White homogeneous paste |
| Assay | 48.5-51.0 % |
| Density, 20 °C | 1.200 g/cm³ |
| Viscosity, 20 °C | thixotropic paste mPa.s |
Perkadox® BTW-50 is a paste containing 50% dibenzoyl peroxide without phthalate for the curing of unsaturated polyester resins at ambient and elevated temperatures. At temperatures up to 80°C, Perkadox® BTW-50 should be used in combination with an aromatic tertiary amine accelerator, above 80°C the use of an accelerator is not required. Perkadox® BTW-50 has primarily been developed for the putty market. For non filled systems, Perkadox® 40E is better applicable with respect to miscibility with the UP resin. Perkadox® BTW-50 shows a very good chemical and physical stability and is therefore very suitable for tube filling. The curing system Perkadox® BTW-50/amine accelerator shows a very fast cure that is hardly influenced by humidity and fillers. Even at low temperatures a relatively good cure will be obtained. A disadvantage may be the yellow color and poor light resistance of the moulded product.
Brand:Trigonox®
Chemical family:Organic peroxide
CAS number:6731-36-8
Physical form:Liquid
Molecular Weight:302.5
Chemical name:1,1-Di(tert-butylperoxy)-3,3,5-trimethylcyclohexane, 90% solution in isododecane
Brand:Butanox®
Chemical family:Organic peroxide
CAS number:1338-23-4
Physical form:Liquid
Chemical name:Methyl ethyl ketone peroxide in diisononyl phthalate
Brand:Polylite
Appearance:Light yellow transparent viscous liquid
Acid Value:14-22 mg KOH/g
Viscosity, 25℃:1.6-2.3 Pa.s
Solid Content:70-76 %
Gel Time, 25℃:8.5-10.5 min
Thermal Stability, 80℃:≥24h
Brand:Polylite
Appearance:Transparent, water-white liquid with a bluish tint
Viscosity:0.75-1.25 25℃, Pa.S
Gel Time:5.6-10.4 25℃, min
Acid Value:18-26 mg KOH/g
Solid Content:64-70 %
Brand:Polylite
Appearance: Clear liquid,no visible mechanical impurity
Epoxy Equivalent (g/eq): 176–184
Color (Gardner): Max 1.0
Flash Point (℃): Above 150
Viscosity (cps, at 25℃): 8000–11000
Hydrolyzable Chlorine Content (ppm): Below 1000
Specific Gravity (g/cm³, 25℃): 1.16
Brand:Polylite
Appearance: Semi-solid
Epoxy equivalent (g/eq): 170-190
*Hue(G): 3.0Max.
Flash point (℃): 250↑
Solution viscosity (25℃): H~K
Density (g/cm³ 20℃): 1.18
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