Hydroxy Silicone Oil 500cst CAS 70131-67-8 Medium Viscosity Crosslinker for Condensation RTV
Hydroxy Silicone Oil 500cst CAS 70131-67-8 is medium viscosity hydroxyl-terminated polydimethylsiloxane (OH-terminated PDMS).
With reactive terminal hydroxyl groups, it can undergo polycondensation reaction with various silane crosslinkers in the presence of catalyst. It serves as the fundamental base polymer for manufacturing single-component and two-component condensation type RTV silicone sealants, adhesives and coating materials.
Hydroxy Silicone Oil 500cst CAS 70131-67-8
Product Detail Page（Suitable for Alibaba International & Official Website）
Product Overview
Hydroxy Silicone Oil 500cst CAS 70131-67-8 is medium viscosity hydroxyl-terminated polydimethylsiloxane (OH-terminated PDMS).The product has active terminal hydroxyl groups, which can perform polycondensation reaction with multiple silane crosslinkers under the action of catalyst. It is a core base polymer specially developed for producing single-component and two-component condensation RTV silicone sealants, adhesives and silicone coatings.
Product Properties
Clear, colorless transparent liquidKinematic viscosity: 500 mm²/s (25℃)Stable hydroxyl contentNarrow molecular weight distributionGood compatibility with fillers, crosslinkers and organotin catalystsLow volatile contentUniform reaction activityStable performance under sealed storage
Core Advantages
- Stable viscosity and hydroxyl value, ensure consistent curing speed of finished RTV products
- Moderate viscosity, easy to compound, mix and disperse with various fillers
- Narrow molecular weight distribution, contribute to stable mechanical strength after curing
- Excellent reaction compatibility with alkoxy silane and ketoxime silane crosslinkers
- Low impurity content, less adverse effect on storage stability of one-component sealant
- Balanced elongation and tensile property of cured condensation silicone rubber
Main Applications
500cst Hydroxy Silicone Oil acts as Medium Viscosity Crosslinker for Condensation RTV.Typical applications: base polymer for condensation RTV silicone sealant, raw material of silicone adhesive, coating material for electronic protection, two-component silicone potting compound, building weatherproof silicone sealant raw material.
Usage Guidance
Strictly avoid contact with moisture during production and storage to prevent premature crosslinking.Complete small-batch formulation test before formal mass production of silicone sealant.Select matched crosslinkers and catalysts according to different RTV product systems.Keep sealed to avoid absorbing water vapor from the air.Prevent mixing with acidic or alkaline impurities.
Packing & Storage
Standard package: 25kg plastic drum; small test samples are available.Store in cool, dry and ventilated warehouse. Keep container tightly sealed. Keep away from open flame, high temperature, strong acid and strong alkali. Avoid water and foreign pollutants during transportation.
Our Service
We provide stable bulk supply of 500cst Hydroxy Silicone Oil with accurate viscosity and stable hydroxyl value. Laboratory test samples can be supplied for formula development. Our technical team offers professional technical support for condensation RTV silicone production process.
Previous : Hydroxy Silicone Oil 100cst CAS 70131-67-8 Low Viscosity Structure Control Agent for HTV Rubber
Next : Hydroxy Silicone Oil 1000cst CAS 70131-67-8 Base Polymer for RTV-2 Silicone Mold Making Rubber
Copy product links
Long by picture save/share
Add Successfully
Add Successfully
Jishengya Technology
Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.
点击右上角
分享给朋友吧
Copyright © 2005-2026 Shenzhen Jishengya Technology Co., Ltd. All Rights Reserved.
