JohnHo-Ph-D4

Hubei JohnHo New Materials Technology Co., Ltd.

Headquarter:RT Office Building, Longhuashan, Xiantao City, Hubei, China

Production Base:Qilu Chemical Park, Zibo City, Shandong, China.

TDS for JohnHo-Ph-D4 Octaphenylcyclotetrasiloxane

1.Product Description

Octaphenylcyclotetrasiloxane, CAS：546-56-5 ， Molecular formula: C48H40O4Si4, molecular weight: 793.18, appears as white granular or powdery crystals, and is a cyclic organosilicon intermediate containing eight phenyl groups.

2.Applications

(1)Organic silicon polymer synthesis: Octaphenylcyclotetrasiloxane is the core monomer for synthesizing high phenyl content silicone oil and silicone resin. The rigid structure of phenyl significantly enhances the thermal stability (decomposition temperature can reach over 400 ° C) and optical transparency of materials, and is widely used in aerospace thermal control coatings, LED potting adhesives, fiber optic cladding materials, and other scenarios.

(2)Resin modifier: Introducing phenylsiloxane segments into polyurethane can effectively reduce surface energy and enhance weather resistance; As a toughening agent in epoxy resin, it can simultaneously enhance the glass transition temperature (Tg) and impact resistance, and has been applied in the fields of wind turbine blade encapsulation and electronic device potting.

(3)Application as functional additives:

As an efficient release agent, its low surface tension (about 20 mN/m) enables it to achieve residue free release in precision injection molding (such as optical lenses and microelectronic potting);

In electrical insulation coatings, the phenyl group inhibits charge transfer and increases the volume resistivity to over 10 ¹⁶Ω· cm;

As a gas chromatography stationary phase, its high thermal stability is suitable for separating non-volatile components such as polycyclic aromatic hydrocarbons.

(4)Fine chemical and pharmaceutical intermediates: Its phenyl structure can serve as the backbone unit for constructing silicon containing drug molecules, such as for synthesizing silicon heterocyclic compounds with antiviral activity, which have been used in patent literature for precursor synthesis of HIV protease inhibitors.

3. Advantages

(1) Good stability: The phenyl structure endows it with excellent high temperature and oxidation resistance, making it not easy to decompose and evaporate at high temperatures, and suitable for high temperature working conditions

(2) Stable physical and chemical properties: low impurities, low volatility, high crystal purity, good batch consistency, and strong controllability of synthesis reactions.

(3) Excellent optical performance: high refractive index, good transparency, suitable for optical and photopolymerization material systems.

(4) Stable reactivity: Less impurities can reduce side reactions. As an intermediate of organosilicon, it can produce higher quality and more balanced performance in the synthesis of phenyl silicone oil, silicone resin, and silicone rubber.

(5) Good compatibility: It has good compatibility with various organic resins, organic solvents, and polymer substrates.

(6) Excellent electrical insulation: With stable dielectric properties, it can be used for high-end electronic and insulating silicone products.

4. Technical Parameters

5.Packaging and Storage

(1) Sealed and stored in a dry, cool place at room temperature;

(2) Avoid exposure to acids, bases, water, etc.

6.Shelf life: 12 months.

7.Packaging specifications: 25kg paperboard drum packaging or other customer specified packaging.

8.Precautions

When using, avoid contacting with strong oxidants.