Ashby Catalyst PT-5000V – Anti-Yellowing Platinum Vulcanizing Agent for LSR

Product Overview for Platinum Catalyst

PT-5000V is an Ashby-type platinum catalyst offering exceptional anti-yellowing performance and extended shelf life. It is specially designed for liquid silicone rubber vulcanization where clarity, color stability, and long pot life are essential.

Product Features for Platinum Catalyst

• Based on Ashby catalyst chemistry for enhanced stability

• Low yellowing even under high-temperature aging

• Compatible with a wide range of LSR formulations

Product Parameters  for Platinum Catalyst

Platinum content: 4000–5500 ppm

Appearance: Clear, pale yellow liquid

Storage: >12 months at 25°C without inhibitor

Applications  for Platinum Catalyst

Platinum vulcanizing agent for LSR

High-clarity silicone rubber products

Medical and food-grade silicone items

Optical and lighting components

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 contact with PVC, sulfur, or amine-containing materials

Store in original container only

Packaging & Storage for Platinum Catalyst

1 kg, 5 kg, 20 kg sealed containers
• Store below 35°C in dry environment

FAQ  for Platinum Catalyst

What is an Ashby catalyst?

A type of Karstedt catalyst with modified ligands for improved stability and activity.

Can PT-5000V be used for injection molding?

Yes, it is suitable for both injection and compression molding LSR.

Does it meet FDA requirements?

Yes, it complies with FDA 21 CFR 177.2600 for food contact.

What is the typical cure time in molding?

30–90 seconds at 150–180°C depending on part thickness.

Is it compatible with pigments?

Yes, it does not react with most colorants.