High-Refractive Index Platinum Catalyst PT-5000PH – LED Potting & RTV Sealant Grade

Product Overview for Platinum Catalyst

PT-5000PH is a high-refractive-index platinum catalyst engineered for LED potting and optical sealing applications. It enables formulations with RI up to 1.51, enhancing light extraction and efficiency in LED modules.

Product Features for Platinum Catalyst

• Enables RI up to 1.51 in cured silicone

• Excellent optical clarity and light transmission

• Low ionic content for improved LED reliability

Product Parameters  for Platinum Catalyst

Platinum content: 5000–7000 ppm

Refractive index (cured): Adjustable 1.41–1.51

Volatile content: < 0.5%

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

Typical dosage: 0.05–0.3% in LSR base

Mix with vinyl silicone polymer before adding crosslinker

Injection molding or compression molding at 120–180°C

Precautions for Platinum Catalyst

Avoid moisture contamination during processing

Handle under yellow light if UV-sensitive components present

Packaging & Storage for Platinum Catalyst

100 g, 500 g, 1 kg amber glass bottles

Store under nitrogen blanket for extended stability

FAQ  for Platinum Catalyst

Why is high refractive index important for LEDs?

Reduces light loss at interfaces, improving brightness and efficiency.

Can PT-5000PH be used for UV-cure systems?

It is designed for thermal cure; for UV cure, please inquire about specific grades.

What is the typical light transmittance?

92% at 450 nm in 2 mm thickness.

Does it yellow under blue light?

No, it exhibits excellent blue light stability.

Is it suitable for COB LED packaging?

Yes, widely used in chip-on-board LED potting.