High-Clarity Karstedt Catalyst PT-5000S – Optical Grade for LED Encapsulation

Product Overview for Platinum Catalyst

PT-5000S is an optical-grade Karstedt catalyst delivering ultra-high clarity and low haze, making it ideal for premium LED encapsulation, optical lenses, and display adhesives where maximum light transmission is required.

Product Features for Platinum Catalyst

• Exceptionally low haze and yellowin

• High purity with minimal metal impurities

• Stable cure profile for consistent optical performance

Product Parameters  for Platinum Catalyst

• Platinum content: 4500–6000 ppm

• Haze: < 0.5% in 2 mm sheet

• Light transmittance: >94% (400–800 nm)

Applications  for Platinum Catalyst

LED encapsulation and potting compounds

High-RI RTV sealants for optics

Optical adhesives for lenses and displays

Photovoltaic module sealing

Operating Guidelines for Platinum Catalyst

Dosage: 0.05–0.4% in optical silicone

Recommend vacuum degassing before cure

Thermal cure: 70–120°C for 2–6 hours

Precautions for Platinum Catalyst

Use cleanroom conditions for critical optical applications

Avoid dust and particulate contamination

Packaging & Storage for Platinum Catalyst

50 g, 250 g, 1 kg sterile glass vials

Store in dark, 15–25°C environment

FAQ  for Platinum Catalyst

How does PT-5000S compare to Japanese optical catalysts?

It matches or exceeds the clarity and stability of leading Japanese brands.

Can it be autoclaved?

Yes, cured silicone maintains clarity after autoclaving at 121°C.

Is it suitable for VR/AR lens bonding?

Yes, its low haze and high transmission are ideal.

What is the recommended mix ratio?

Typically 1:1 to 10:1 vinyl to Si-H, depending on formulation.

Does it support secondary optical bonding?

Yes, it enables clear, bubble-free bonding of optical components.