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Quality 1,3-DICHLORO-1,1,3,3-TETRAISOPROPYLDISILOXANE [HYDROXYL PROTECTING AGENT]（CAS NO.69304-37-6） factory
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Quality 1,3-DICHLORO-1,1,3,3-TETRAISOPROPYLDISILOXANE [HYDROXYL PROTECTING AGENT]（CAS NO.69304-37-6） factory
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1,3-DICHLORO-1,1,3,3-TETRAISOPROPYLDISILOXANE [HYDROXYL PROTECTING AGENT]（CAS NO.69304-37-6）

Specifications
Highlight:

1 3-Dichloro-1 1 3 3-Tetraisopropyldisiloxane

,

liquid 0.986g/mL Hydroxyl Protecting Agent

,

Cas 69304-37-6
Product Name:
1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane [Hydroxyl Protecting Agent]
Appearance:
Clear Liquid
MF:
C12H28Cl2OSi2
MW:
315.43
M.P:
<0°C
B.P:
70 °C0.5 Mm Hg(lit.)
Density:
0.986 G/mL At 25 °C(lit.)
Flash point:
>230 °F
Tags:

Chlorodimethylphenylsilane

P-Trichlorosilylbiphenyl

Dimethyloctadecylchlorosilane
Key Attributes
Brand Name: SISO
Model Number: 69304-37-6
Place of Origin: China
Payment Terms: T/T
Product Description

1. High-selectivity Hydroxyl Protecting Reagent

This product is a high-stability sterically hindered disiloxane reagent specially used for hydroxyl group protection. It features dual reactive Si-Cl bonds and symmetrical tetraisopropyl steric hindrance structure. It can achieve highly selective protection of hydroxyl active groups under mild reaction conditions, with stable protection groups, good tolerance to multi-step synthesis conditions and convenient deprotection operation, which is widely used in fine organic synthesis and pharmaceutical intermediate derivation.

2. Steric Hindrance Type Silicone Polymer Modified Monomer 

The symmetrical tetraisopropyl disiloxane skeleton provides excellent molecular steric hindrance and structural stability. It can undergo hydrolysis polycondensation to be introduced into silicone resin and silicone rubber molecular chains. It effectively improves the thermal stability, hydrolysis resistance and structural dimensional stability of conventional silicone materials, and inhibits molecular chain degradation under high-temperature and humid conditions.

3. High Weatherability Protective Coating Modifier

The stable saturated isopropyl steric hindrance structure has excellent UV aging resistance, thermal oxidation stability and medium barrier performance. When applied to industrial outdoor coating systems, it can form a dense cross-linked protective network after curing, effectively improving the coating’s water resistance, chemical corrosion resistance and weather resistance, and prolonging the service life of outdoor protective coatings.

4. Low-water-absorption Electronic Insulation Material Additive

This sterically hindered disiloxane monomer has low molecular polarity, low water absorption and excellent electrical insulation properties. After cross-linking and curing, it forms a compact hydrophobic insulating layer, which can effectively reduce the water absorption rate of electronic packaging and insulating materials, stabilize dielectric properties under high humidity conditions, and improve the long-term insulation reliability of precision electronic devices.
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