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
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Exceptionally low haze and yellowin
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High purity with minimal metal impurities
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Stable cure profile for consistent optical performance
Product Parameters for Platinum Catalyst
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Platinum content: 4500–6000 ppm
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Haze: < 0.5% in 2 mm sheet
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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.
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