Vinyl Silicone Oil 50000cst CAS 68083-19-2 Ultra High Viscosity Base for High Transparency LSR
50000cst Vinyl Silicone Oil (CAS 68083-19-2) is high-purity ultra-high molecular weight linear divinyl-terminated polydimethylsiloxane. It acts as core base polymer for high transparency injection molding LSR. Long molecular chain structure provides excellent mechanical foundation. It carries out hydrosilylation crosslinking reaction with methyl hydrogen silicone oil under platinum catalyst. The cured silicone maintains high light transmittance and resists yellowing under long-term high temperat
Product Overview
50000cst Vinyl Silicone Oil (CAS 68083-19-2) is refined linear divinyl terminated polydimethylsiloxane with ultra-high viscosity. This vinyl silicone fluid is specially manufactured for optical-grade high transparency liquid silicone rubber. Strict purification reduces ionic impurities and chromogenic contaminants. Terminal vinyl groups can fully react with methyl hydrogen silicone oil without small molecule by-products. It has outstanding compatibility with high transparency fumed silica, enabling production of crystal clear silicone elastomers for optical and high-end application scenarios.
Key Features
- Ultra-high molecular weight, greatly improves tensile strength and tear resistance of silicone
- High purity, low ion content, excellent long-term anti-yellowing performance
- Evenly distributed vinyl groups, stable and adjustable crosslink density
- Good miscibility with transparent reinforcing silica and silicone auxiliaries
- Cured elastomer features high light transmittance suitable for optical applications
Main Applications
- Base polymer for optical high transparency injection LSR
- Raw material for lighting and optical device silicone components
- Formulation of high-grade transparent food-contact silicone rubber
- Base material for medical transparent liquid silicone elastomer
Usage Guidance
Mix uniformly with high-transparency fumed silica, matched methyl hydrogen silicone oil crosslinker and platinum catalyst. Tune formula ratios to control hardness, mechanical indicators and curing speed. Avoid contact with sulfur, amines, tin compounds and heavy metals to prevent catalyst poisoning and incomplete curing.
Storage & Package
Keep drums tightly sealed. Store in cool, dry and ventilated warehouse. Avoid long-term exposure to high temperature, UV radiation and direct sunlight. Standard package: 25kg plastic drum, 200kg iron drum. Shelf life: 12 months under proper storage conditions.
Service Support
Test samples are available for formula evaluation. Stable bulk supply and professional silicone formulation technical service. Feel free to contact us to get TDS, COA and factory direct quotation.
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