Fast-Cure Karstedt Catalyst PT-5000SW – Medium/Low Temperature Curing for Silicone Gel & Molding

Product Overview for Karstedt Catalyst
PT-5000SW is a high-activity, fast-cure Karstedt catalyst specifically formulated for medium to low temperature applications. It enables rapid crosslinking even at room temperature, making it ideal for thermal potting gels, silicone gels, and molding rubber where quick demolding is required.

Product Features for Karstedt Catalyst

Accelerated curing at 25–80°C

Low exotherm, suitable for thick sections

Excellent fluidity and dispersion in silicone bases

Minimizes air entrapment and bubble formation

Product Parameters for Karstedt Catalyst

Platinum content: 4000–6000 ppm

Viscosity: < 50 mPa·s at 25°C

Recommended cure temperature: 25–120°C

Shelf life: 12 months in unopened container

Applications for Karstedt Catalyst

Thermal potting compounds for electronics

Silicone gels for cushioning and encapsulation

Mold-making silicone rubber

Low-temperature cure RTV systems

Operating Guidelines for Karstedt Catalyst

Use 0.05–0.5% by weight in silicone base

Pre-mix with vinyl-containing component thoroughly

Cure profile: 30 min @ 80°C or 2–4 hrs @ 25°C

Precautions for Karstedt Catalyst

Avoid contamination with sulfur, phosphorous, or organic tin

Do not expose to high humidity before curing

Packaging & Storage for Karstedt Catalyst

500 g, 1 kg, 5 kg amber glass bottles

Store below 30°C in dry, dark conditions

FAQ for Karstedt Catalyst

How fast does PT-5000SW cure at room temperature?

Gel time: 10–20 minutes; tack-free time: 30–60 minutes depending on system.

Can it be used for potting sensitive electronic components?

Yes, its low exotherm and excellent electrical insulation make it ideal.

Is post-curing required?

Not necessary, but baking at 60–80°C for 1–2 hours enhances properties.

Does it work with high-viscosity silicone bases?

Yes, it disperses well even in thickened systems.

What is the maximum operating temperature after cure?

Up to 200°C continuous, 250°C short-term.