Vinyl Terminated Polyfluorosiloxane

Vinyl terminated polyfluorosiloxane is a low molecular weight polymer characterized by the incorporation of vinyl and fluorinated segments within its molecular structure. The introduction of a trifluoropropyl group onto the silicon atom endows this polymer with exceptional properties, including outstanding oil resistance, solvent resistance, and chemical stability, as well as remarkable antioxidant capability. Additionally, it exhibits low surface tension and a low refractive index. The presence of vinyl groups not only facilitates cross-linking and curing processes but also allows the polymer to participate in some chemical reactions, enhancing its versatility for a wide range of applications.

Technical Index

Product Name	Vinyl Terminated Polyfluorosiloxane
Composition	Low molecular weight polymer of vinyl terminated methyl-(3,3,3-trifluoropropyl)siloxane
CAS	68951-98-4
Catalog	OFC00106-1	OFC00106-2	OFC00106-3
Appearance	Colorless or light yellow transparent liquid	Colorless or light yellow transparent liquid	Colorless or light yellow transparent liquid
Viscosity at 25°C	300 mPa·s	500 mPa·s	1000 mPa·s
Flashing Point	≥260°C	≥270°C	≥300°C
Vinyl Content	1.2-1.5%	1.2-1.5%	1.2-1.5%
pH	6.0-7.5	6.0-7.5	6.0-7.5
Volatility (200°C/4hr)	<5%	<5%	<5%
Refractive Index	1.380±0.01	1.380±0.01	1.380±0.01

Features

• Superior oil, solvent, and chemical resistance. Vinyl terminated polyfluorosiloxane exhibits exceptional resistance to a variety of oils, solvents, and chemicals, making it an ideal choice for applications that demand durability and reliability in harsh chemical environments.
• Low surface tension and low refractive index. It possesses a low surface tension and refractive index, which contribute to its excellent optical clarity and ability to repel contaminants.
• Broad temperature operating range. This versatile polymer maintains its performance over an extensive temperature range, providing reliable functionality in both high-temperature and low-temperature environments, thereby expanding its applicability across diverse industrial settings.

Applications

Vinyl terminated polyfluorosiloxane with high viscosity is commonly utilized in the production of addition-type curable fluorosilicone rubber. In contrast, low-viscosity vinyl terminated polyfluorosiloxane serves a dual purpose: it acts as an effective active diluent for addition-type curable fluorosilicone rubber and is also used in the manufacture of fluorosilicone rubber paints. This versatility makes low-viscosity polyfluorosiloxane a valuable component in various formulations, enhancing the properties and performance of the final products.