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
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Based on Ashby catalyst chemistry for enhanced stability
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Low yellowing even under high-temperature aging
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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.
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